mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListView.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2004-2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Ravindra Kumar (rkumar@novell.com)
  24 //      Jordi Mas i Hernandez, jordi@ximian.com
  25 //      Mike Kestner (mkestner@novell.com)
  26 //      Daniel Nauck (dna(at)mono-project(dot)de)
  27 //      Carlos Alberto Cortez <calberto.cortez@gmail.com>
  28 //
  29
  30
  31 // NOT COMPLETE
  32
  33
  34 using System.Collections;
  35 using System.ComponentModel;
  36 using System.ComponentModel.Design;
  37 using System.Drawing;
  38 using System.Runtime.InteropServices;
  39 using System.Globalization;
  40 #if NET_2_0
  41 using System.Collections.Generic;
  42 #endif
  43
  44 namespace System.Windows.Forms
  45 {
  46         [DefaultEvent ("SelectedIndexChanged")]
  47         [DefaultProperty ("Items")]
  48         [Designer ("System.Windows.Forms.Design.ListViewDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  49 #if NET_2_0
  50         [ClassInterface (ClassInterfaceType.AutoDispatch)]
  51         [ComVisible (true)]
  52         [Docking (DockingBehavior.Ask)]
  53 #endif
  54         public class ListView : Control
  55         {
  56                 private ItemActivation activation = ItemActivation.Standard;
  57                 private ListViewAlignment alignment = ListViewAlignment.Top;
  58                 private bool allow_column_reorder;
  59                 private bool auto_arrange = true;
  60                 private bool check_boxes;
  61                 private readonly CheckedIndexCollection checked_indices;
  62                 private readonly CheckedListViewItemCollection checked_items;
  63                 private readonly ColumnHeaderCollection columns;
  64                 internal int focused_item_index = -1;
  65                 private bool full_row_select;
  66                 private bool grid_lines;
  67                 private ColumnHeaderStyle header_style = ColumnHeaderStyle.Clickable;
  68                 private bool hide_selection = true;
  69                 private bool hover_selection;
  70                 private IComparer item_sorter;
  71                 private readonly ListViewItemCollection items;
  72 #if NET_2_0
  73                 private readonly ListViewGroupCollection groups;
  74                 private bool owner_draw;
  75                 private bool show_groups = true;
  76 #endif
  77                 private bool label_edit;
  78                 private bool label_wrap = true;
  79                 private bool multiselect = true;
  80                 private bool scrollable = true;
  81                 private bool hover_pending;
  82                 private readonly SelectedIndexCollection selected_indices;
  83                 private readonly SelectedListViewItemCollection selected_items;
  84                 private SortOrder sort_order = SortOrder.None;
  85                 private ImageList state_image_list;
  86                 internal bool updating;
  87                 private View view = View.LargeIcon;
  88                 private int layout_wd;    // We might draw more than our client area
  89                 private int layout_ht;    // therefore we need to have these two.
  90                 internal HeaderControl header_control;
  91                 internal ItemControl item_control;
  92                 internal ScrollBar h_scroll; // used for scrolling horizontally
  93                 internal ScrollBar v_scroll; // used for scrolling vertically
  94                 internal int h_marker;          // Position markers for scrolling
  95                 internal int v_marker;
  96                 private int keysearch_tickcnt;
  97                 private string keysearch_text;
  98                 static private readonly int keysearch_keydelay = 1000;
  99                 private int[] reordered_column_indices;
 100                 private int[] reordered_items_indices;
 101                 private Point [] items_location;
 102                 private ItemMatrixLocation [] items_matrix_location;
 103                 private Size item_size; // used for caching item size
 104                 private int custom_column_width; // used when using Columns with SmallIcon/List views
 105                 private int hot_item_index = -1;
 106 #if NET_2_0
 107                 private bool hot_tracking;
 108                 private ListViewInsertionMark insertion_mark;
 109                 private bool show_item_tooltips;
 110                 private ToolTip item_tooltip;
 111                 private Size tile_size;
 112                 private bool virtual_mode;
 113                 private int virtual_list_size;
 114                 private bool right_to_left_layout;
 115 #endif
 116                 // selection is available after the first time the handle is created, *even* if later
 117                 // the handle is either recreated or destroyed - so keep this info around.
 118                 private bool is_selection_available;
 119
 120                 // internal variables
 121                 internal ImageList large_image_list;
 122                 internal ImageList small_image_list;
 123                 internal Size text_size = Size.Empty;
 124
 125                 #region Events
 126                 static object AfterLabelEditEvent = new object ();
 127                 static object BeforeLabelEditEvent = new object ();
 128                 static object ColumnClickEvent = new object ();
 129                 static object ItemActivateEvent = new object ();
 130                 static object ItemCheckEvent = new object ();
 131                 static object ItemDragEvent = new object ();
 132                 static object SelectedIndexChangedEvent = new object ();
 133 #if NET_2_0
 134                 static object DrawColumnHeaderEvent = new object();
 135                 static object DrawItemEvent = new object();
 136                 static object DrawSubItemEvent = new object();
 137                 static object ItemCheckedEvent = new object ();
 138                 static object ItemMouseHoverEvent = new object ();
 139                 static object ItemSelectionChangedEvent = new object ();
 140                 static object CacheVirtualItemsEvent = new object ();
 141                 static object RetrieveVirtualItemEvent = new object ();
 142                 static object RightToLeftLayoutChangedEvent = new object ();
 143                 static object SearchForVirtualItemEvent = new object ();
 144                 static object VirtualItemsSelectionRangeChangedEvent = new object ();
 145 #endif
 146
 147                 public event LabelEditEventHandler AfterLabelEdit {
 148                         add { Events.AddHandler (AfterLabelEditEvent, value); }
 149                         remove { Events.RemoveHandler (AfterLabelEditEvent, value); }
 150                 }
 151
 152 #if !NET_2_0
 153                 [Browsable (false)]
 154                 [EditorBrowsable (EditorBrowsableState.Never)]
 155                 public new event EventHandler BackgroundImageChanged {
 156                         add { base.BackgroundImageChanged += value; }
 157                         remove { base.BackgroundImageChanged -= value; }
 158                 }
 159 #endif
 160
 161 #if NET_2_0
 162                 [Browsable (false)]
 163                 [EditorBrowsable (EditorBrowsableState.Never)]
 164                 public new event EventHandler BackgroundImageLayoutChanged {
 165                         add { base.BackgroundImageLayoutChanged += value; }
 166                         remove { base.BackgroundImageLayoutChanged -= value; }
 167                 }
 168 #endif
 169
 170                 public event LabelEditEventHandler BeforeLabelEdit {
 171                         add { Events.AddHandler (BeforeLabelEditEvent, value); }
 172                         remove { Events.RemoveHandler (BeforeLabelEditEvent, value); }
 173                 }
 174
 175                 public event ColumnClickEventHandler ColumnClick {
 176                         add { Events.AddHandler (ColumnClickEvent, value); }
 177                         remove { Events.RemoveHandler (ColumnClickEvent, value); }
 178                 }
 179
 180 #if NET_2_0
 181                 public event DrawListViewColumnHeaderEventHandler DrawColumnHeader {
 182                         add { Events.AddHandler(DrawColumnHeaderEvent, value); }
 183                         remove { Events.RemoveHandler(DrawColumnHeaderEvent, value); }
 184                 }
 185
 186                 public event DrawListViewItemEventHandler DrawItem {
 187                         add { Events.AddHandler(DrawItemEvent, value); }
 188                         remove { Events.RemoveHandler(DrawItemEvent, value); }
 189                 }
 190
 191                 public event DrawListViewSubItemEventHandler DrawSubItem {
 192                         add { Events.AddHandler(DrawSubItemEvent, value); }
 193                         remove { Events.RemoveHandler(DrawSubItemEvent, value); }
 194                 }
 195 #endif
 196
 197                 public event EventHandler ItemActivate {
 198                         add { Events.AddHandler (ItemActivateEvent, value); }
 199                         remove { Events.RemoveHandler (ItemActivateEvent, value); }
 200                 }
 201
 202                 public event ItemCheckEventHandler ItemCheck {
 203                         add { Events.AddHandler (ItemCheckEvent, value); }
 204                         remove { Events.RemoveHandler (ItemCheckEvent, value); }
 205                 }
 206
 207 #if NET_2_0
 208                 public event ItemCheckedEventHandler ItemChecked {
 209                         add { Events.AddHandler (ItemCheckedEvent, value); }
 210                         remove { Events.RemoveHandler (ItemCheckedEvent, value); }
 211                 }
 212 #endif
 213
 214                 public event ItemDragEventHandler ItemDrag {
 215                         add { Events.AddHandler (ItemDragEvent, value); }
 216                         remove { Events.RemoveHandler (ItemDragEvent, value); }
 217                 }
 218
 219 #if NET_2_0
 220                 public event ListViewItemMouseHoverEventHandler ItemMouseHover {
 221                         add { Events.AddHandler (ItemMouseHoverEvent, value); }
 222                         remove { Events.RemoveHandler (ItemMouseHoverEvent, value); }
 223                 }
 224
 225                 public event ListViewItemSelectionChangedEventHandler ItemSelectionChanged {
 226                         add { Events.AddHandler (ItemSelectionChangedEvent, value); }
 227                         remove { Events.RemoveHandler (ItemSelectionChangedEvent, value); }
 228                 }
 229
 230                 [Browsable (false)]
 231                 [EditorBrowsable (EditorBrowsableState.Never)]
 232                 public new event EventHandler PaddingChanged {
 233                         add { base.PaddingChanged += value; }
 234                         remove { base.PaddingChanged -= value; }
 235                 }
 236 #endif
 237
 238                 [Browsable (false)]
 239                 [EditorBrowsable (EditorBrowsableState.Never)]
 240                 public new event PaintEventHandler Paint {
 241                         add { base.Paint += value; }
 242                         remove { base.Paint -= value; }
 243                 }
 244
 245                 public event EventHandler SelectedIndexChanged {
 246                         add { Events.AddHandler (SelectedIndexChangedEvent, value); }
 247                         remove { Events.RemoveHandler (SelectedIndexChangedEvent, value); }
 248                 }
 249
 250                 [Browsable (false)]
 251                 [EditorBrowsable (EditorBrowsableState.Never)]
 252                 public new event EventHandler TextChanged {
 253                         add { base.TextChanged += value; }
 254                         remove { base.TextChanged -= value; }
 255                 }
 256
 257 #if NET_2_0
 258                 public event CacheVirtualItemsEventHandler CacheVirtualItems {
 259                         add { Events.AddHandler (CacheVirtualItemsEvent, value); }
 260                         remove { Events.RemoveHandler (CacheVirtualItemsEvent, value); }
 261                 }
 262
 263                 public event RetrieveVirtualItemEventHandler RetrieveVirtualItem {
 264                         add { Events.AddHandler (RetrieveVirtualItemEvent, value); }
 265                         remove { Events.RemoveHandler (RetrieveVirtualItemEvent, value); }
 266                 }
 267
 268                 public event EventHandler RightToLeftLayoutChanged {
 269                         add { Events.AddHandler (RightToLeftLayoutChangedEvent, value); }
 270                         remove { Events.RemoveHandler (RightToLeftLayoutChangedEvent, value); }
 271                 }
 272
 273                 public event SearchForVirtualItemEventHandler SearchForVirtualItem {
 274                         add { Events.AddHandler (SearchForVirtualItemEvent, value); }
 275                         remove { Events.AddHandler (SearchForVirtualItemEvent, value); }
 276                 }
 277
 278                 public event ListViewVirtualItemsSelectionRangeChangedEventHandler VirtualItemsSelectionRangeChanged {
 279                         add { Events.AddHandler (VirtualItemsSelectionRangeChangedEvent, value); }
 280                         remove { Events.RemoveHandler (VirtualItemsSelectionRangeChangedEvent, value); }
 281                 }
 282 #endif
 283
 284                 #endregion // Events
 285
 286                 #region Public Constructors
 287                 public ListView ()
 288                 {
 289                         background_color = ThemeEngine.Current.ColorWindow;
 290 #if NET_2_0
 291                         groups = new ListViewGroupCollection (this);
 292 #endif
 293                         items = new ListViewItemCollection (this);
 294                         items.Changed += new CollectionChangedHandler (OnItemsChanged);
 295                         checked_indices = new CheckedIndexCollection (this);
 296                         checked_items = new CheckedListViewItemCollection (this);
 297                         columns = new ColumnHeaderCollection (this);
 298                         foreground_color = SystemColors.WindowText;
 299                         selected_indices = new SelectedIndexCollection (this);
 300                         selected_items = new SelectedListViewItemCollection (this);
 301                         items_location = new Point [16];
 302                         items_matrix_location = new ItemMatrixLocation [16];
 303                         reordered_items_indices = new int [16];
 304 #if NET_2_0
 305                         item_tooltip = new ToolTip ();
 306                         item_tooltip.Active = false;
 307                         insertion_mark = new ListViewInsertionMark (this);
 308 #endif
 309
 310                         InternalBorderStyle = BorderStyle.Fixed3D;
 311
 312                         header_control = new HeaderControl (this);
 313                         header_control.Visible = false;
 314                         Controls.AddImplicit (header_control);
 315
 316                         item_control = new ItemControl (this);
 317                         Controls.AddImplicit (item_control);
 318
 319                         h_scroll = new ImplicitHScrollBar ();
 320                         Controls.AddImplicit (this.h_scroll);
 321
 322                         v_scroll = new ImplicitVScrollBar ();
 323                         Controls.AddImplicit (this.v_scroll);
 324
 325                         h_marker = v_marker = 0;
 326                         keysearch_tickcnt = 0;
 327
 328                         // scroll bars are disabled initially
 329                         h_scroll.Visible = false;
 330                         h_scroll.ValueChanged += new EventHandler(HorizontalScroller);
 331                         v_scroll.Visible = false;
 332                         v_scroll.ValueChanged += new EventHandler(VerticalScroller);
 333
 334                         // event handlers
 335                         base.KeyDown += new KeyEventHandler(ListView_KeyDown);
 336                         SizeChanged += new EventHandler (ListView_SizeChanged);
 337                         GotFocus += new EventHandler (FocusChanged);
 338                         LostFocus += new EventHandler (FocusChanged);
 339                         MouseWheel += new MouseEventHandler(ListView_MouseWheel);
 340                         MouseEnter += new EventHandler (ListView_MouseEnter);
 341                         Invalidated += new InvalidateEventHandler (ListView_Invalidated);
 342
 343 #if NET_2_0
 344                         BackgroundImageTiled = false;
 345 #endif
 346
 347                         this.SetStyle (ControlStyles.UserPaint | ControlStyles.StandardClick
 348 #if NET_2_0
 349                                 | ControlStyles.UseTextForAccessibility
 350 #endif
 351                                 , false);
 352                 }
 353                 #endregion      // Public Constructors
 354
 355                 #region Private Internal Properties
 356                 internal Size CheckBoxSize {
 357                         get {
 358                                 if (this.check_boxes) {
 359                                         if (this.state_image_list != null)
 360                                                 return this.state_image_list.ImageSize;
 361                                         else
 362                                                 return ThemeEngine.Current.ListViewCheckBoxSize;
 363                                 }
 364                                 return Size.Empty;
 365                         }
 366                 }
 367
 368                 internal Size ItemSize {
 369                         get {
 370                                 if (view != View.Details)
 371                                         return item_size;
 372
 373                                 Size size = new Size ();
 374                                 size.Height = item_size.Height;
 375                                 for (int i = 0; i < columns.Count; i++)
 376                                         size.Width += columns [i].Wd;
 377
 378                                 return size;
 379                         }
 380                         set {
 381                                 item_size = value;
 382                         }
 383                 }
 384
 385                 internal int HotItemIndex {
 386                         get {
 387                                 return hot_item_index;
 388                         }
 389                         set {
 390                                 hot_item_index = value;
 391                         }
 392                 }
 393
 394 #if NET_2_0
 395                 internal bool UsingGroups {
 396                         get {
 397                                 return show_groups && groups.Count > 0 && view != View.List &&
 398                                         Application.VisualStylesEnabled;
 399                         }
 400                 }
 401 #endif
 402
 403                 internal override bool ScaleChildrenInternal {
 404                         get { return false; }
 405                 }
 406
 407                 internal bool UseCustomColumnWidth {
 408                         get {
 409                                 return (view == View.List || view == View.SmallIcon) && columns.Count > 0;
 410                         }
 411                 }
 412
 413                 internal ColumnHeader EnteredColumnHeader {
 414                         get {
 415                                 return header_control.EnteredColumnHeader;
 416                         }
 417                 }
 418                 #endregion      // Private Internal Properties
 419
 420                 #region  Protected Properties
 421                 protected override CreateParams CreateParams {
 422                         get { return base.CreateParams; }
 423                 }
 424
 425                 protected override Size DefaultSize {
 426                         get { return ThemeEngine.Current.ListViewDefaultSize; }
 427                 }
 428 #if NET_2_0
 429                 protected override bool DoubleBuffered {
 430                         get {
 431                                 return base.DoubleBuffered;
 432                         }
 433                         set {
 434                                 base.DoubleBuffered = value;
 435                         }
 436                 }
 437 #endif
 438                 #endregion      // Protected Properties
 439
 440                 #region Public Instance Properties
 441                 [DefaultValue (ItemActivation.Standard)]
 442                 public ItemActivation Activation {
 443                         get { return activation; }
 444                         set {
 445                                 if (value != ItemActivation.Standard && value != ItemActivation.OneClick &&
 446                                         value != ItemActivation.TwoClick) {
 447                                         throw new InvalidEnumArgumentException (string.Format
 448                                                 ("Enum argument value '{0}' is not valid for Activation", value));
 449                                 }
 450 #if NET_2_0
 451                                 if (hot_tracking && value != ItemActivation.OneClick)
 452                                         throw new ArgumentException ("When HotTracking is on, activation must be ItemActivation.OneClick");
 453 #endif
 454
 455                                 activation = value;
 456                         }
 457                 }
 458
 459                 [DefaultValue (ListViewAlignment.Top)]
 460                 [Localizable (true)]
 461                 public ListViewAlignment Alignment {
 462                         get { return alignment; }
 463                         set {
 464                                 if (value != ListViewAlignment.Default && value != ListViewAlignment.Left &&
 465                                         value != ListViewAlignment.SnapToGrid && value != ListViewAlignment.Top) {
 466                                         throw new InvalidEnumArgumentException (string.Format
 467                                                 ("Enum argument value '{0}' is not valid for Alignment", value));
 468                                 }
 469
 470                                 if (this.alignment != value) {
 471                                         alignment = value;
 472                                         // alignment does not matter in Details/List views
 473                                         if (this.view == View.LargeIcon || this.View == View.SmallIcon)
 474                                                 this.Redraw (true);
 475                                 }
 476                         }
 477                 }
 478
 479                 [DefaultValue (false)]
 480                 public bool AllowColumnReorder {
 481                         get { return allow_column_reorder; }
 482                         set { allow_column_reorder = value; }
 483                 }
 484
 485                 [DefaultValue (true)]
 486                 public bool AutoArrange {
 487                         get { return auto_arrange; }
 488                         set {
 489                                 if (auto_arrange != value) {
 490                                         auto_arrange = value;
 491                                         // autoarrange does not matter in Details/List views
 492                                         if (this.view == View.LargeIcon || this.View == View.SmallIcon)
 493                                                 this.Redraw (true);
 494                                 }
 495                         }
 496                 }
 497
 498                 public override Color BackColor {
 499                         get {
 500                                 if (background_color.IsEmpty)
 501                                         return ThemeEngine.Current.ColorWindow;
 502                                 else
 503                                         return background_color;
 504                         }
 505                         set {
 506                                 background_color = value;
 507                                 item_control.BackColor = value;
 508                         }
 509                 }
 510
 511 #if !NET_2_0
 512                 [Browsable (false)]
 513                 [EditorBrowsable (EditorBrowsableState.Never)]
 514                 public override Image BackgroundImage {
 515                         get { return base.BackgroundImage; }
 516                         set { base.BackgroundImage = value; }
 517                 }
 518 #endif
 519
 520 #if NET_2_0
 521                 [Browsable (false)]
 522                 [EditorBrowsable (EditorBrowsableState.Never)]
 523                 public override ImageLayout BackgroundImageLayout {
 524                         get {
 525                                 return base.BackgroundImageLayout;
 526                         }
 527                         set {
 528                                 base.BackgroundImageLayout = value;
 529                         }
 530                 }
 531
 532                 [DefaultValue (false)]
 533                 public bool BackgroundImageTiled {
 534                         get {
 535                                 return item_control.BackgroundImageLayout == ImageLayout.Tile;
 536                         }
 537                         set {
 538                                 ImageLayout new_image_layout = value ? ImageLayout.Tile : ImageLayout.None;
 539                                 if (new_image_layout == item_control.BackgroundImageLayout)
 540                                         return;
 541
 542                                 item_control.BackgroundImageLayout = new_image_layout;
 543                         }
 544                 }
 545 #endif
 546
 547                 [DefaultValue (BorderStyle.Fixed3D)]
 548                 [DispId (-504)]
 549                 public BorderStyle BorderStyle {
 550                         get { return InternalBorderStyle; }
 551                         set { InternalBorderStyle = value; }
 552                 }
 553
 554                 [DefaultValue (false)]
 555                 public bool CheckBoxes {
 556                         get { return check_boxes; }
 557                         set {
 558                                 if (check_boxes != value) {
 559 #if NET_2_0
 560                                         if (value && View == View.Tile)
 561                                                 throw new NotSupportedException ("CheckBoxes are not"
 562                                                         + " supported in Tile view. Choose a different"
 563                                                         + " view or set CheckBoxes to false.");
 564 #endif
 565
 566                                         check_boxes = value;
 567                                         this.Redraw (true);
 568
 569 #if NET_2_0
 570                                         //UIA Framework: Event used by ListView to set/unset Toggle Pattern
 571                                         OnUIACheckBoxesChanged ();
 572 #endif
 573                                 }
 574                         }
 575                 }
 576
 577                 [Browsable (false)]
 578                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 579                 public CheckedIndexCollection CheckedIndices {
 580                         get { return checked_indices; }
 581                 }
 582
 583                 [Browsable (false)]
 584                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 585                 public CheckedListViewItemCollection CheckedItems {
 586                         get { return checked_items; }
 587                 }
 588
 589 #if NET_2_0
 590                 [Editor ("System.Windows.Forms.Design.ColumnHeaderCollectionEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
 591 #endif
 592                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 593                 [Localizable (true)]
 594                 [MergableProperty (false)]
 595                 public ColumnHeaderCollection Columns {
 596                         get { return columns; }
 597                 }
 598
 599                 [Browsable (false)]
 600                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 601                 public ListViewItem FocusedItem {
 602                         get {
 603                                 if (focused_item_index == -1)
 604                                         return null;
 605
 606                                 return GetItemAtDisplayIndex (focused_item_index);
 607                         }
 608 #if NET_2_0
 609                         set {
 610                                 if (value == null || value.ListView != this ||
 611                                                 !IsHandleCreated)
 612                                         return;
 613
 614                                 SetFocusedItem (value.DisplayIndex);
 615                         }
 616 #endif
 617                 }
 618
 619                 public override Color ForeColor {
 620                         get {
 621                                 if (foreground_color.IsEmpty)
 622                                         return ThemeEngine.Current.ColorWindowText;
 623                                 else
 624                                         return foreground_color;
 625                         }
 626                         set { foreground_color = value; }
 627                 }
 628
 629                 [DefaultValue (false)]
 630                 public bool FullRowSelect {
 631                         get { return full_row_select; }
 632                         set {
 633                                 if (full_row_select != value) {
 634                                         full_row_select = value;
 635                                         InvalidateSelection ();
 636                                 }
 637                         }
 638                 }
 639
 640                 [DefaultValue (false)]
 641                 public bool GridLines {
 642                         get { return grid_lines; }
 643                         set {
 644                                 if (grid_lines != value) {
 645                                         grid_lines = value;
 646                                         this.Redraw (false);
 647                                 }
 648                         }
 649                 }
 650
 651                 [DefaultValue (ColumnHeaderStyle.Clickable)]
 652                 public ColumnHeaderStyle HeaderStyle {
 653                         get { return header_style; }
 654                         set {
 655                                 if (header_style == value)
 656                                         return;
 657
 658                                 switch (value) {
 659                                 case ColumnHeaderStyle.Clickable:
 660                                 case ColumnHeaderStyle.Nonclickable:
 661                                 case ColumnHeaderStyle.None:
 662                                         break;
 663                                 default:
 664                                         throw new InvalidEnumArgumentException (string.Format
 665                                                 ("Enum argument value '{0}' is not valid for ColumnHeaderStyle", value));
 666                                 }
 667
 668                                 header_style = value;
 669                                 if (view == View.Details)
 670                                         Redraw (true);
 671                         }
 672                 }
 673
 674                 [DefaultValue (true)]
 675                 public bool HideSelection {
 676                         get { return hide_selection; }
 677                         set {
 678                                 if (hide_selection != value) {
 679                                         hide_selection = value;
 680                                         InvalidateSelection ();
 681                                 }
 682                         }
 683                 }
 684
 685 #if NET_2_0
 686                 [DefaultValue (false)]
 687                 public bool HotTracking {
 688                         get {
 689                                 return hot_tracking;
 690                         }
 691                         set {
 692                                 if (hot_tracking == value)
 693                                         return;
 694
 695                                 hot_tracking = value;
 696                                 if (hot_tracking) {
 697                                         hover_selection = true;
 698                                         activation = ItemActivation.OneClick;
 699                                 }
 700                         }
 701                 }
 702 #endif
 703
 704                 [DefaultValue (false)]
 705                 public bool HoverSelection {
 706                         get { return hover_selection; }
 707                         set {
 708 #if NET_2_0
 709                                 if (hot_tracking && value == false)
 710                                         throw new ArgumentException ("When HotTracking is on, hover selection must be true");
 711 #endif
 712                                 hover_selection = value;
 713                         }
 714                 }
 715
 716 #if NET_2_0
 717                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 718                 [Browsable (false)]
 719                 public ListViewInsertionMark InsertionMark {
 720                         get {
 721                                 return insertion_mark;
 722                         }
 723                 }
 724 #endif
 725
 726 #if NET_2_0
 727                 [Editor ("System.Windows.Forms.Design.ListViewItemCollectionEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
 728 #endif
 729                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 730                 [Localizable (true)]
 731                 [MergableProperty (false)]
 732                 public ListViewItemCollection Items {
 733                         get { return items; }
 734                 }
 735
 736                 [DefaultValue (false)]
 737                 public bool LabelEdit {
 738                         get { return label_edit; }
 739                         set {
 740                                 if (value != label_edit) {
 741                                         label_edit = value;
 742
 743 #if NET_2_0
 744                                         // UIA Framework: Event used by Value Pattern in ListView.ListItem provider
 745                                         OnUIALabelEditChanged ();
 746 #endif
 747                                 }
 748
 749                         }
 750                 }
 751
 752                 [DefaultValue (true)]
 753                 [Localizable (true)]
 754                 public bool LabelWrap {
 755                         get { return label_wrap; }
 756                         set {
 757                                 if (label_wrap != value) {
 758                                         label_wrap = value;
 759                                         this.Redraw (true);
 760                                 }
 761                         }
 762                 }
 763
 764                 [DefaultValue (null)]
 765                 public ImageList LargeImageList {
 766                         get { return large_image_list; }
 767                         set {
 768                                 large_image_list = value;
 769                                 this.Redraw (true);
 770                         }
 771                 }
 772
 773                 [Browsable (false)]
 774                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 775                 public IComparer ListViewItemSorter {
 776                         get {
 777                                 if (View != View.SmallIcon && View != View.LargeIcon && item_sorter is ItemComparer)
 778                                         return null;
 779                                 return item_sorter;
 780                         }
 781                         set {
 782                                 if (item_sorter != value) {
 783                                         item_sorter = value;
 784                                         Sort ();
 785                                 }
 786                         }
 787                 }
 788
 789                 [DefaultValue (true)]
 790                 public bool MultiSelect {
 791                         get { return multiselect; }
 792                         set {
 793                                 if (value != multiselect) {
 794                                         multiselect = value;
 795
 796 #if NET_2_0
 797                                         // UIA Framework: Event used by Selection Pattern in ListView.ListItem provider
 798                                         OnUIAMultiSelectChanged ();
 799 #endif
 800                                 }
 801                         }
 802                 }
 803
 804
 805 #if NET_2_0
 806                 [DefaultValue(false)]
 807                 public bool OwnerDraw {
 808                         get { return owner_draw; }
 809                         set {
 810                                 owner_draw = value;
 811                                 Redraw (true);
 812                         }
 813                 }
 814
 815                 [Browsable (false)]
 816                 [EditorBrowsable (EditorBrowsableState.Never)]
 817                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 818                 public new Padding Padding {
 819                         get {
 820                                 return base.Padding;
 821                         }
 822                         set {
 823                                 base.Padding = value;
 824                         }
 825                 }
 826
 827                 [MonoTODO ("RTL not supported")]
 828                 [Localizable (true)]
 829                 [DefaultValue (false)]
 830                 public virtual bool RightToLeftLayout {
 831                         get { return right_to_left_layout; }
 832                         set {
 833                                 if (right_to_left_layout != value) {
 834                                         right_to_left_layout = value;
 835                                         OnRightToLeftLayoutChanged (EventArgs.Empty);
 836                                 }
 837                         }
 838                 }
 839 #endif
 840
 841                 [DefaultValue (true)]
 842                 public bool Scrollable {
 843                         get { return scrollable; }
 844                         set {
 845                                 if (scrollable != value) {
 846                                         scrollable = value;
 847                                         this.Redraw (true);
 848                                 }
 849                         }
 850                 }
 851
 852                 [Browsable (false)]
 853                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 854                 public SelectedIndexCollection SelectedIndices {
 855                         get { return selected_indices; }
 856                 }
 857
 858                 [Browsable (false)]
 859                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 860                 public SelectedListViewItemCollection SelectedItems {
 861                         get { return selected_items; }
 862                 }
 863
 864 #if NET_2_0
 865                 [DefaultValue(true)]
 866                 public bool ShowGroups {
 867                         get { return show_groups; }
 868                         set {
 869                                 if (show_groups != value) {
 870                                         show_groups = value;
 871                                         Redraw(true);
 872
 873                                         // UIA Framework: Used to update a11y Tree
 874                                         OnUIAShowGroupsChanged ();
 875                                 }
 876                         }
 877                 }
 878
 879                 [LocalizableAttribute (true)]
 880                 [MergableProperty (false)]
 881                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 882                 [Editor ("System.Windows.Forms.Design.ListViewGroupCollectionEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
 883                 public ListViewGroupCollection Groups {
 884                         get { return groups; }
 885                 }
 886
 887                 [DefaultValue (false)]
 888                 public bool ShowItemToolTips {
 889                         get {
 890                                 return show_item_tooltips;
 891                         }
 892                         set {
 893                                 show_item_tooltips = value;
 894                                 item_tooltip.Active = false;
 895                         }
 896                 }
 897 #endif
 898
 899                 [DefaultValue (null)]
 900                 public ImageList SmallImageList {
 901                         get { return small_image_list; }
 902                         set {
 903                                 small_image_list = value;
 904                                 this.Redraw (true);
 905                         }
 906                 }
 907
 908                 [DefaultValue (SortOrder.None)]
 909                 public SortOrder Sorting {
 910                         get { return sort_order; }
 911                         set {
 912                                 if (!Enum.IsDefined (typeof (SortOrder), value)) {
 913                                         throw new InvalidEnumArgumentException ("value", (int) value,
 914                                                 typeof (SortOrder));
 915                                 }
 916
 917                                 if (sort_order == value)
 918                                         return;
 919
 920                                 sort_order = value;
 921
 922 #if NET_2_0
 923                                 if (virtual_mode) // Sorting is not allowed in virtual mode
 924                                         return;
 925 #endif
 926
 927                                 if (value == SortOrder.None) {
 928                                         if (item_sorter != null) {
 929                                                 // ListViewItemSorter should never be reset for SmallIcon
 930                                                 // and LargeIcon view
 931                                                 if (View != View.SmallIcon && View != View.LargeIcon)
 932 #if NET_2_0
 933                                                         item_sorter = null;
 934 #else
 935                                                         // in .NET 1.1, only internal IComparer would be
 936                                                         // set to null
 937                                                         if (item_sorter is ItemComparer)
 938                                                                 item_sorter = null;
 939 #endif
 940                                         }
 941                                         this.Redraw (false);
 942                                 } else {
 943                                         if (item_sorter == null)
 944                                                 item_sorter = new ItemComparer (value);
 945                                         if (item_sorter is ItemComparer) {
 946 #if NET_2_0
 947                                                 item_sorter = new ItemComparer (value);
 948 #else
 949                                                 // in .NET 1.1, the sort order is not updated for
 950                                                 // SmallIcon and LargeIcon views if no custom IComparer
 951                                                 // is set
 952                                                 if (View != View.SmallIcon && View != View.LargeIcon)
 953                                                         item_sorter = new ItemComparer (value);
 954 #endif
 955                                         }
 956                                         Sort ();
 957                                 }
 958                         }
 959                 }
 960
 961                 private void OnImageListChanged (object sender, EventArgs args)
 962                 {
 963                         item_control.Invalidate ();
 964                 }
 965
 966                 [DefaultValue (null)]
 967                 public ImageList StateImageList {
 968                         get { return state_image_list; }
 969                         set {
 970                                 if (state_image_list == value)
 971                                         return;
 972
 973                                 if (state_image_list != null)
 974                                         state_image_list.Images.Changed -= new EventHandler (OnImageListChanged);
 975
 976                                 state_image_list = value;
 977
 978                                 if (state_image_list != null)
 979                                         state_image_list.Images.Changed += new EventHandler (OnImageListChanged);
 980
 981                                 this.Redraw (true);
 982                         }
 983                 }
 984
 985                 [Bindable (false)]
 986                 [Browsable (false)]
 987                 [EditorBrowsable (EditorBrowsableState.Never)]
 988                 public override string Text {
 989                         get { return base.Text; }
 990                         set {
 991                                 if (value == base.Text)
 992                                         return;
 993
 994                                 base.Text = value;
 995                                 this.Redraw (true);
 996                         }
 997                 }
 998
 999 #if NET_2_0
1000                 [Browsable (true)]
1001                 public Size TileSize {
1002                         get {
1003                                 return tile_size;
1004                         }
1005                         set {
1006                                 if (value.Width <= 0 || value.Height <= 0)
1007                                         throw new ArgumentOutOfRangeException ("value");
1008
1009                                 tile_size = value;
1010                                 if (view == View.Tile)
1011                                         Redraw (true);
1012                         }
1013                 }
1014 #endif
1015
1016                 [Browsable (false)]
1017                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
1018                 public ListViewItem TopItem {
1019                         get {
1020 #if NET_2_0
1021                                 if (view == View.LargeIcon || view == View.SmallIcon || view == View.Tile)
1022                                         throw new InvalidOperationException ("Cannot get the top item in LargeIcon, SmallIcon or Tile view.");
1023 #endif
1024                                 // there is no item
1025                                 if (this.items.Count == 0)
1026                                         return null;
1027                                 // if contents are not scrolled
1028                                 // it is the first item
1029                                 else if (h_marker == 0 && v_marker == 0)
1030                                         return this.items [0];
1031                                 // do a hit test for the scrolled position
1032                                 else {
1033                                         int header_offset = header_control.Height;
1034                                         for (int i = 0; i < items.Count; i++) {
1035                                                 Point item_loc = GetItemLocation (i);
1036                                                 if (item_loc.X >= 0 && item_loc.Y - header_offset >= 0)
1037                                                         return items [i];
1038                                         }
1039                                         return null;
1040                                 }
1041                         }
1042 #if NET_2_0
1043                         set {
1044                                 if (view == View.LargeIcon || view == View.SmallIcon || view == View.Tile)
1045                                         throw new InvalidOperationException ("Cannot set the top item in LargeIcon, SmallIcon or Tile view.");
1046
1047                                 // .Net doesn't throw any exception in the cases below
1048                                 if (value == null || value.ListView != this)
1049                                         return;
1050
1051                                 // Take advantage this property is only valid for Details view.
1052                                 SetScrollValue (v_scroll, item_size.Height * value.Index);
1053                         }
1054 #endif
1055                 }
1056
1057 #if NET_2_0
1058                 [EditorBrowsable (EditorBrowsableState.Advanced)]
1059                 [DefaultValue (true)]
1060                 [Browsable (false)]
1061                 [MonoInternalNote ("Stub, not implemented")]
1062                 public bool UseCompatibleStateImageBehavior {
1063                         get {
1064                                 return false;
1065                         }
1066                         set {
1067                         }
1068                 }
1069 #endif
1070
1071                 [DefaultValue (View.LargeIcon)]
1072                 public View View {
1073                         get { return view; }
1074                         set {
1075                                 if (!Enum.IsDefined (typeof (View), value))
1076                                         throw new InvalidEnumArgumentException ("value", (int) value,
1077                                                 typeof (View));
1078
1079                                 if (view != value) {
1080 #if NET_2_0
1081                                         if (CheckBoxes && value == View.Tile)
1082                                                 throw new NotSupportedException ("CheckBoxes are not"
1083                                                         + " supported in Tile view. Choose a different"
1084                                                         + " view or set CheckBoxes to false.");
1085                                         if (VirtualMode && value == View.Tile)
1086                                                 throw new NotSupportedException ("VirtualMode is"
1087                                                         + " not supported in Tile view. Choose a different"
1088                                                         + " view or set ViewMode to false.");
1089 #endif
1090
1091                                         h_scroll.Value = v_scroll.Value = 0;
1092                                         view = value;
1093                                         Redraw (true);
1094
1095 #if NET_2_0
1096                                         // UIA Framework: Event used to update UIA Tree.
1097                                         OnUIAViewChanged ();
1098 #endif
1099                                 }
1100                         }
1101                 }
1102
1103 #if NET_2_0
1104                 [DefaultValue (false)]
1105                 [RefreshProperties (RefreshProperties.Repaint)]
1106                 public bool VirtualMode {
1107                         get {
1108                                 return virtual_mode;
1109                         }
1110                         set {
1111                                 if (virtual_mode == value)
1112                                         return;
1113
1114                                 if (!virtual_mode && items.Count > 0)
1115                                         throw new InvalidOperationException ();
1116                                 if (value && view == View.Tile)
1117                                         throw new NotSupportedException ("VirtualMode is"
1118                                                 + " not supported in Tile view. Choose a different"
1119                                                 + " view or set ViewMode to false.");
1120
1121                                 virtual_mode = value;
1122                                 Redraw (true);
1123                         }
1124                 }
1125
1126                 [DefaultValue (0)]
1127                 [RefreshProperties (RefreshProperties.Repaint)]
1128                 public int VirtualListSize {
1129                         get {
1130                                 return virtual_list_size;
1131                         }
1132                         set {
1133                                 if (value < 0)
1134                                         throw new ArgumentException ("value");
1135
1136                                 if (virtual_list_size == value)
1137                                         return;
1138
1139                                 virtual_list_size = value;
1140                                 if (virtual_mode) {
1141                                         selected_indices.Reset ();
1142                                         Redraw (true);
1143                                 }
1144                         }
1145                 }
1146 #endif
1147                 #endregion      // Public Instance Properties
1148
1149                 #region Internal Methods Properties
1150
1151                 internal int FirstVisibleIndex {
1152                         get {
1153                                 // there is no item
1154                                 if (this.items.Count == 0)
1155                                         return 0;
1156
1157                                 if (h_marker == 0 && v_marker == 0)
1158                                         return 0;
1159
1160                                 Size item_size = ItemSize;
1161 #if NET_2_0
1162                                 // In virtual mode we always have fixed positions, and we can infer the positon easily
1163                                 if (virtual_mode) {
1164                                         int first = 0;
1165                                         switch (view) {
1166                                                 case View.Details:
1167                                                         first = v_marker / item_size.Height;
1168                                                         break;
1169                                                 case View.LargeIcon:
1170                                                 case View.SmallIcon:
1171                                                         first = (v_marker / (item_size.Height + y_spacing)) * cols;
1172                                                         break;
1173                                                 case View.List:
1174                                                         first = (h_marker / (item_size.Width * x_spacing)) * rows;
1175                                                         break;
1176                                         }
1177
1178                                         if (first >= items.Count)
1179                                                 first = items.Count;
1180
1181                                         return first;
1182                                 }
1183 #endif
1184                                 for (int i = 0; i < items.Count; i++) {
1185                                         Rectangle item_rect = new Rectangle (GetItemLocation (i), item_size);
1186                                         if (item_rect.Right >= 0 && item_rect.Bottom >= 0)
1187                                                 return i;
1188                                 }
1189
1190                                 return 0;
1191                         }
1192                 }
1193
1194
1195                 internal int LastVisibleIndex {
1196                         get {
1197                                 for (int i = FirstVisibleIndex; i < Items.Count; i++) {
1198                                         if (View == View.List || Alignment == ListViewAlignment.Left) {
1199                                                 if (GetItemLocation (i).X > item_control.ClientRectangle.Right)
1200                                                         return i - 1;
1201                                         } else {
1202                                                 if (GetItemLocation (i).Y > item_control.ClientRectangle.Bottom)
1203                                                         return i - 1;
1204                                         }
1205                                 }
1206
1207                                 return Items.Count - 1;
1208                         }
1209                 }
1210
1211                 internal void OnSelectedIndexChanged ()
1212                 {
1213                         if (is_selection_available)
1214                                 OnSelectedIndexChanged (EventArgs.Empty);
1215                 }
1216
1217                 internal int TotalWidth {
1218                         get { return Math.Max (this.Width, this.layout_wd); }
1219                 }
1220
1221                 internal int TotalHeight {
1222                         get { return Math.Max (this.Height, this.layout_ht); }
1223                 }
1224
1225                 internal void Redraw (bool recalculate)
1226                 {
1227                         // Avoid calculations when control is being updated
1228                         if (updating)
1229                                 return;
1230 #if NET_2_0
1231                         // VirtualMode doesn't do any calculations until handle is created
1232                         if (virtual_mode && !IsHandleCreated)
1233                                 return;
1234 #endif
1235
1236
1237                         if (recalculate)
1238                                 CalculateListView (this.alignment);
1239
1240                         Invalidate (true);
1241                 }
1242
1243                 void InvalidateSelection ()
1244                 {
1245                         foreach (int selected_index in SelectedIndices)
1246                                 items [selected_index].Invalidate ();
1247                 }
1248
1249                 const int text_padding = 15;
1250
1251                 internal Size GetChildColumnSize (int index)
1252                 {
1253                         Size ret_size = Size.Empty;
1254                         ColumnHeader col = this.columns [index];
1255
1256                         if (col.Width == -2) { // autosize = max(items, columnheader)
1257                                 Size size = Size.Ceiling (TextRenderer.MeasureString
1258                                         (col.Text, this.Font));
1259                                 size.Width += text_padding;
1260                                 ret_size = BiggestItem (index);
1261                                 if (size.Width > ret_size.Width)
1262                                         ret_size = size;
1263                         }
1264                         else { // -1 and all the values < -2 are put under one category
1265                                 ret_size = BiggestItem (index);
1266                                 // fall back to empty columns' width if no subitem is available for a column
1267                                 if (ret_size.IsEmpty) {
1268                                         ret_size.Width = ThemeEngine.Current.ListViewEmptyColumnWidth;
1269                                         if (col.Text.Length > 0)
1270                                                 ret_size.Height = Size.Ceiling (TextRenderer.MeasureString
1271                                                                                 (col.Text, this.Font)).Height;
1272                                         else
1273                                                 ret_size.Height = this.Font.Height;
1274                                 }
1275                         }
1276
1277                         ret_size.Height += text_padding;
1278
1279                         // adjust the size for icon and checkbox for 0th column
1280                         if (index == 0) {
1281                                 ret_size.Width += (this.CheckBoxSize.Width + 4);
1282                                 if (this.small_image_list != null)
1283                                         ret_size.Width += this.small_image_list.ImageSize.Width;
1284                         }
1285                         return ret_size;
1286                 }
1287
1288                 // Returns the size of biggest item text in a column
1289                 // or the sum of the text and indent count if we are on 2.0
1290                 private Size BiggestItem (int col)
1291                 {
1292                         Size temp = Size.Empty;
1293                         Size ret_size = Size.Empty;
1294 #if NET_2_0
1295                         bool use_indent_count = small_image_list != null;
1296
1297                         // VirtualMode uses the first item text size
1298                         if (virtual_mode && items.Count > 0) {
1299                                 ListViewItem item = items [0];
1300                                 ret_size = Size.Ceiling (TextRenderer.MeasureString (item.SubItems[col].Text,
1301                                                         Font));
1302
1303                                 if (use_indent_count)
1304                                         ret_size.Width += item.IndentCount * small_image_list.ImageSize.Width;
1305                         } else {
1306 #endif
1307                                 // 0th column holds the item text, we check the size of
1308                                 // the various subitems falling in that column and get
1309                                 // the biggest one's size.
1310                                 foreach (ListViewItem item in items) {
1311                                         if (col >= item.SubItems.Count)
1312                                                 continue;
1313
1314                                         temp = Size.Ceiling (TextRenderer.MeasureString
1315                                                                 (item.SubItems [col].Text, Font));
1316
1317 #if NET_2_0
1318                                         if (use_indent_count)
1319                                                 temp.Width += item.IndentCount * small_image_list.ImageSize.Width;
1320 #endif
1321
1322                                         if (temp.Width > ret_size.Width)
1323                                                 ret_size = temp;
1324                                 }
1325 #if NET_2_0
1326                         }
1327 #endif
1328
1329                         // adjustment for space in Details view
1330                         if (!ret_size.IsEmpty && view == View.Details)
1331                                 ret_size.Width += ThemeEngine.Current.ListViewItemPaddingWidth;
1332
1333                         return ret_size;
1334                 }
1335
1336                 const int max_wrap_padding = 30;
1337
1338                 // Sets the size of the biggest item text as per the view
1339                 private void CalcTextSize ()
1340                 {
1341                         // clear the old value
1342                         text_size = Size.Empty;
1343
1344                         if (items.Count == 0)
1345                                 return;
1346
1347                         text_size = BiggestItem (0);
1348
1349                         if (view == View.LargeIcon && this.label_wrap) {
1350                                 Size temp = Size.Empty;
1351                                 if (this.check_boxes)
1352                                         temp.Width += 2 * this.CheckBoxSize.Width;
1353                                 int icon_w = LargeImageList == null ? 12 : LargeImageList.ImageSize.Width;
1354                                 temp.Width += icon_w + max_wrap_padding;
1355                                 // wrapping is done for two lines only
1356                                 if (text_size.Width > temp.Width) {
1357                                         text_size.Width = temp.Width;
1358                                         text_size.Height *= 2;
1359                                 }
1360                         }
1361                         else if (view == View.List) {
1362                                 // in list view max text shown in determined by the
1363                                 // control width, even if scolling is enabled.
1364                                 int max_wd = this.Width - (this.CheckBoxSize.Width - 2);
1365                                 if (this.small_image_list != null)
1366                                         max_wd -= this.small_image_list.ImageSize.Width;
1367
1368                                 if (text_size.Width > max_wd)
1369                                         text_size.Width = max_wd;
1370                         }
1371
1372                         // we do the default settings, if we have got 0's
1373                         if (text_size.Height <= 0)
1374                                 text_size.Height = this.Font.Height;
1375                         if (text_size.Width <= 0)
1376                                 text_size.Width = this.Width;
1377
1378                         // little adjustment
1379                         text_size.Width += 2;
1380                         text_size.Height += 2;
1381                 }
1382
1383                 private void SetScrollValue (ScrollBar scrollbar, int val)
1384                 {
1385                         int max;
1386                         if (scrollbar == h_scroll)
1387                                 max = h_scroll.Maximum - item_control.Width;
1388                         else
1389                                 max = v_scroll.Maximum - item_control.Height;
1390
1391                         if (val > max)
1392                                 val = max;
1393                         else if (val < scrollbar.Minimum)
1394                                 val = scrollbar.Minimum;
1395
1396                         scrollbar.Value = val;
1397                 }
1398
1399                 private void Scroll (ScrollBar scrollbar, int delta)
1400                 {
1401                         if (delta == 0 || !scrollbar.Visible)
1402                                 return;
1403
1404                         SetScrollValue (scrollbar, scrollbar.Value + delta);
1405                 }
1406
1407                 private void CalculateScrollBars ()
1408                 {
1409                         Rectangle client_area = ClientRectangle;
1410                         int height = client_area.Height;
1411                         int width = client_area.Width;
1412
1413                         if (!scrollable) {
1414                                 h_scroll.Visible = false;
1415                                 v_scroll.Visible = false;
1416                                 item_control.Size = new Size (width, height);
1417                                 header_control.Width = width;
1418                                 return;
1419                         }
1420
1421                         // Don't calculate if the view is not displayable
1422                         if (client_area.Height < 0 || client_area.Width < 0)
1423                                 return;
1424
1425                         // making a scroll bar visible might make
1426                         // other scroll bar visible
1427                         if (layout_wd > client_area.Right) {
1428                                 h_scroll.Visible = true;
1429                                 if ((layout_ht + h_scroll.Height) > client_area.Bottom)
1430                                         v_scroll.Visible = true;
1431                                 else
1432                                         v_scroll.Visible = false;
1433                         } else if (layout_ht > client_area.Bottom) {
1434                                 v_scroll.Visible = true;
1435                                 if ((layout_wd + v_scroll.Width) > client_area.Right)
1436                                         h_scroll.Visible = true;
1437                                 else
1438                                         h_scroll.Visible = false;
1439                         } else {
1440                                 h_scroll.Visible = false;
1441                                 v_scroll.Visible = false;
1442                         }
1443
1444
1445                         if (h_scroll.is_visible) {
1446                                 h_scroll.Location = new Point (client_area.X, client_area.Bottom - h_scroll.Height);
1447                                 h_scroll.Minimum = 0;
1448
1449                                 // if v_scroll is visible, adjust the maximum of the
1450                                 // h_scroll to account for the width of v_scroll
1451                                 if (v_scroll.Visible) {
1452                                         h_scroll.Maximum = layout_wd + v_scroll.Width;
1453                                         h_scroll.Width = client_area.Width - v_scroll.Width;
1454                                 }
1455                                 else {
1456                                         h_scroll.Maximum = layout_wd;
1457                                         h_scroll.Width = client_area.Width;
1458                                 }
1459
1460                                 h_scroll.LargeChange = client_area.Width;
1461                                 h_scroll.SmallChange = item_size.Width + ThemeEngine.Current.ListViewHorizontalSpacing;
1462                                 height -= h_scroll.Height;
1463                         }
1464
1465                         if (v_scroll.is_visible) {
1466                                 v_scroll.Location = new Point (client_area.Right - v_scroll.Width, client_area.Y);
1467                                 v_scroll.Minimum = 0;
1468                                 v_scroll.Maximum = layout_ht;
1469
1470                                 // if h_scroll is visible, adjust the height of
1471                                 // v_scroll to account for the height of h_scroll
1472                                 if (h_scroll.Visible)
1473                                         v_scroll.Height = client_area.Height - h_scroll.Height;
1474                                 else
1475                                         v_scroll.Height = client_area.Height;
1476
1477                                 v_scroll.LargeChange = client_area.Height;
1478                                 v_scroll.SmallChange = Font.Height;
1479                                 width -= v_scroll.Width;
1480                         }
1481
1482                         item_control.Size = new Size (width, height);
1483
1484                         if (header_control.is_visible)
1485                                 header_control.Width = width;
1486                 }
1487
1488 #if NET_2_0
1489                 internal int GetReorderedColumnIndex (ColumnHeader column)
1490                 {
1491                         if (reordered_column_indices == null)
1492                                 return column.Index;
1493
1494                         for (int i = 0; i < Columns.Count; i++)
1495                                 if (reordered_column_indices [i] == column.Index)
1496                                         return i;
1497
1498                         return -1;
1499                 }
1500 #endif
1501
1502                 internal ColumnHeader GetReorderedColumn (int index)
1503                 {
1504                         if (reordered_column_indices == null)
1505                                 return Columns [index];
1506                         else
1507                                 return Columns [reordered_column_indices [index]];
1508                 }
1509
1510                 internal void ReorderColumn (ColumnHeader col, int index, bool fireEvent)
1511                 {
1512 #if NET_2_0
1513                         if (fireEvent) {
1514                                 ColumnReorderedEventHandler eh = (ColumnReorderedEventHandler) (Events [ColumnReorderedEvent]);
1515                                 if (eh != null){
1516                                         ColumnReorderedEventArgs args = new ColumnReorderedEventArgs (col.Index, index, col);
1517
1518                                         eh (this, args);
1519                                         if (args.Cancel) {
1520                                                 header_control.Invalidate ();
1521                                                 item_control.Invalidate ();
1522                                                 return;
1523                                         }
1524                                 }
1525                         }
1526 #endif
1527                         int column_count = Columns.Count;
1528
1529                         if (reordered_column_indices == null) {
1530                                 reordered_column_indices = new int [column_count];
1531                                 for (int i = 0; i < column_count; i++)
1532                                         reordered_column_indices [i] = i;
1533                         }
1534
1535                         if (reordered_column_indices [index] == col.Index)
1536                                 return;
1537
1538                         int[] curr = reordered_column_indices;
1539                         int [] result = new int [column_count];
1540                         int curr_idx = 0;
1541                         for (int i = 0; i < column_count; i++) {
1542                                 if (curr_idx < column_count && curr [curr_idx] == col.Index)
1543                                         curr_idx++;
1544
1545                                 if (i == index)
1546                                         result [i] = col.Index;
1547                                 else
1548                                         result [i] = curr [curr_idx++];
1549                         }
1550
1551                         ReorderColumns (result, true);
1552                 }
1553
1554                 internal void ReorderColumns (int [] display_indices, bool redraw)
1555                 {
1556                         reordered_column_indices = display_indices;
1557                         for (int i = 0; i < Columns.Count; i++) {
1558                                 ColumnHeader col = Columns [i];
1559                                 col.InternalDisplayIndex = reordered_column_indices [i];
1560                         }
1561                         if (redraw && view == View.Details && IsHandleCreated) {
1562                                 LayoutDetails ();
1563                                 header_control.Invalidate ();
1564                                 item_control.Invalidate ();
1565                         }
1566                 }
1567
1568                 internal void AddColumn (ColumnHeader newCol, int index, bool redraw)
1569                 {
1570                         int column_count = Columns.Count;
1571                         newCol.SetListView (this);
1572
1573                         int [] display_indices = new int [column_count];
1574                         for (int i = 0; i < column_count; i++) {
1575                                 ColumnHeader col = Columns [i];
1576                                 if (i == index) {
1577                                         display_indices [i] = index;
1578                                 } else {
1579                                         int display_index = col.InternalDisplayIndex;
1580                                         if (display_index < index) {
1581                                                 display_indices [i] = display_index;
1582                                         } else {
1583                                                 display_indices [i] = (display_index + 1);
1584                                         }
1585                                 }
1586                         }
1587
1588                         ReorderColumns (display_indices, redraw);
1589                         Invalidate ();
1590                 }
1591
1592                 Size LargeIconItemSize
1593                 {
1594                         get {
1595                                 int image_w = LargeImageList == null ? 12 : LargeImageList.ImageSize.Width;
1596                                 int image_h = LargeImageList == null ? 2 : LargeImageList.ImageSize.Height;
1597                                 int h = text_size.Height + 2 + Math.Max (CheckBoxSize.Height, image_h);
1598                                 int w = Math.Max (text_size.Width, image_w);
1599
1600                                 if (check_boxes)
1601                                         w += 2 + CheckBoxSize.Width;
1602
1603                                 return new Size (w, h);
1604                         }
1605                 }
1606
1607                 Size SmallIconItemSize {
1608                         get {
1609                                 int image_w = SmallImageList == null ? 0 : SmallImageList.ImageSize.Width;
1610                                 int image_h = SmallImageList == null ? 0 : SmallImageList.ImageSize.Height;
1611                                 int h = Math.Max (text_size.Height, Math.Max (CheckBoxSize.Height, image_h));
1612                                 int w = text_size.Width + image_w;
1613
1614                                 if (check_boxes)
1615                                         w += 2 + CheckBoxSize.Width;
1616
1617                                 return new Size (w, h);
1618                         }
1619                 }
1620
1621 #if NET_2_0
1622                 Size TileItemSize {
1623                         get {
1624                                 // Calculate tile size if needed
1625                                 // It appears that using Font.Size instead of a SizeF value can give us
1626                                 // a slightly better approach to the proportions defined in .Net
1627                                 if (tile_size == Size.Empty) {
1628                                         int image_w = LargeImageList == null ? 0 : LargeImageList.ImageSize.Width;
1629                                         int image_h = LargeImageList == null ? 0 : LargeImageList.ImageSize.Height;
1630                                         int w = (int)Font.Size * ThemeEngine.Current.ListViewTileWidthFactor + image_w + 4;
1631                                         int h = Math.Max ((int)Font.Size * ThemeEngine.Current.ListViewTileHeightFactor, image_h);
1632
1633                                         tile_size = new Size (w, h);
1634                                 }
1635
1636                                 return tile_size;
1637                         }
1638                 }
1639 #endif
1640
1641                 int GetDetailsItemHeight ()
1642                 {
1643                         int item_height;
1644                         int checkbox_height = CheckBoxes ? CheckBoxSize.Height : 0;
1645                         int small_image_height = SmallImageList == null ? 0 : SmallImageList.ImageSize.Height;
1646                         item_height = Math.Max (checkbox_height, text_size.Height);
1647                         item_height = Math.Max (item_height, small_image_height);
1648                         return item_height;
1649                 }
1650
1651                 void SetItemLocation (int index, int x, int y, int row, int col)
1652                 {
1653                         Point old_location = items_location [index];
1654                         if (old_location.X == x && old_location.Y == y)
1655                                 return;
1656
1657                         items_location [index] = new Point (x, y);
1658                         items_matrix_location [index] = new ItemMatrixLocation (row, col);
1659
1660                         //
1661                         // Initial position matches item's position in ListViewItemCollection
1662                         //
1663                         reordered_items_indices [index] = index;
1664                 }
1665
1666 #if NET_2_0
1667                 void ShiftItemsPositions (int from, int to, bool forward)
1668                 {
1669                         if (forward) {
1670                                 for (int i = to + 1; i > from; i--) {
1671                                         reordered_items_indices [i] = reordered_items_indices [i - 1];
1672
1673                                         ListViewItem item = items [reordered_items_indices [i]];
1674                                         item.Invalidate ();
1675                                         item.DisplayIndex = i;
1676                                         item.Invalidate ();
1677                                 }
1678                         } else {
1679                                 for (int i = from - 1; i < to; i++) {
1680                                         reordered_items_indices [i] = reordered_items_indices [i + 1];
1681
1682                                         ListViewItem item = items [reordered_items_indices [i]];
1683                                         item.Invalidate ();
1684                                         item.DisplayIndex = i;
1685                                         item.Invalidate ();
1686                                 }
1687                         }
1688                 }
1689
1690                 internal void ChangeItemLocation (int display_index, Point new_pos)
1691                 {
1692                         int new_display_index = GetDisplayIndexFromLocation (new_pos);
1693                         if (new_display_index == display_index)
1694                                 return;
1695
1696                         int item_index = reordered_items_indices [display_index];
1697                         ListViewItem item = items [item_index];
1698
1699                         bool forward = new_display_index < display_index;
1700                         int index_from, index_to;
1701                         if (forward) {
1702                                 index_from = new_display_index;
1703                                 index_to = display_index - 1;
1704                         } else {
1705                                 index_from = display_index + 1;
1706                                 index_to = new_display_index;
1707                         }
1708
1709                         ShiftItemsPositions (index_from, index_to, forward);
1710
1711                         reordered_items_indices [new_display_index] = item_index;
1712
1713                         item.Invalidate ();
1714                         item.DisplayIndex = new_display_index;
1715                         item.Invalidate ();
1716                 }
1717
1718                 int GetDisplayIndexFromLocation (Point loc)
1719                 {
1720                         int display_index = -1;
1721                         Rectangle item_area;
1722
1723                         // First item
1724                         if (loc.X < 0 || loc.Y < 0)
1725                                 return 0;
1726
1727                         // Adjustment to put in the next position refered by 'loc'
1728                         loc.X -= item_size.Width / 2;
1729                         if (loc.X < 0)
1730                                 loc.X = 0;
1731
1732                         for (int i = 0; i < items.Count; i++) {
1733                                 item_area = new Rectangle (GetItemLocation (i), item_size);
1734                                 item_area.Inflate (ThemeEngine.Current.ListViewHorizontalSpacing,
1735                                                 ThemeEngine.Current.ListViewVerticalSpacing);
1736
1737                                 if (item_area.Contains (loc)) {
1738                                         display_index = i;
1739                                         break;
1740                                 }
1741                         }
1742
1743                         // Put in in last position
1744                         if (display_index == -1)
1745                                 display_index = items.Count - 1;
1746
1747                         return display_index;
1748                 }
1749
1750                 // When using groups, the items with no group assigned
1751                 // belong to the DefaultGroup
1752                 int GetDefaultGroupItems ()
1753                 {
1754                         int count = 0;
1755                         foreach (ListViewItem item in items)
1756                                 if (item.Group == null)
1757                                         count++;
1758
1759                         return count;
1760                 }
1761 #endif
1762
1763 #if NET_2_0
1764                 // cache the spacing to let virtualmode compute the positions on the fly
1765                 int x_spacing;
1766                 int y_spacing;
1767 #endif
1768                 int rows;
1769                 int cols;
1770                 int[,] item_index_matrix;
1771
1772                 void CalculateRowsAndCols (Size item_size, bool left_aligned, int x_spacing, int y_spacing)
1773                 {
1774                         Rectangle area = ClientRectangle;
1775
1776                         if (UseCustomColumnWidth)
1777                                 CalculateCustomColumnWidth ();
1778 #if NET_2_0
1779                         if (UsingGroups) {
1780                                 // When groups are used the alignment is always top-aligned
1781                                 rows = 0;
1782                                 cols = 0;
1783                                 int items = 0;
1784
1785                                 groups.DefaultGroup.ItemCount = GetDefaultGroupItems ();
1786                                 for (int i = 0; i < groups.InternalCount; i++) {
1787                                         ListViewGroup group = groups.GetInternalGroup (i);
1788                                         int items_in_group = group.GetActualItemCount ();
1789
1790                                         if (items_in_group == 0)
1791                                                 continue;
1792
1793                                         int group_cols = (int) Math.Floor ((double)(area.Width - v_scroll.Width + x_spacing) / (double)(item_size.Width + x_spacing));
1794                                         if (group_cols <= 0)
1795                                                 group_cols = 1;
1796                                         int group_rows = (int) Math.Ceiling ((double)items_in_group / (double)group_cols);
1797
1798                                         group.starting_row = rows;
1799                                         group.rows = group_rows;
1800                                         group.starting_item = items;
1801                                         group.current_item = 0; // Reset layout
1802
1803                                         cols = Math.Max (group_cols, cols);
1804                                         rows += group_rows;
1805                                         items += items_in_group;
1806                                 }
1807                         } else
1808 #endif
1809                         {
1810                                 // Simple matrix if no groups are used
1811                                 if (left_aligned) {
1812                                         rows = (int) Math.Floor ((double)(area.Height - h_scroll.Height + y_spacing) / (double)(item_size.Height + y_spacing));
1813                                         if (rows <= 0)
1814                                                 rows = 1;
1815                                         cols = (int) Math.Ceiling ((double)items.Count / (double)rows);
1816                                 } else {
1817                                         if (UseCustomColumnWidth)
1818                                                 cols = (int) Math.Floor ((double)(area.Width - v_scroll.Width) / (double)(custom_column_width));
1819                                         else
1820                                                 cols = (int) Math.Floor ((double)(area.Width - v_scroll.Width + x_spacing) / (double)(item_size.Width + x_spacing));
1821
1822                                         if (cols < 1)
1823                                                 cols = 1;
1824
1825                                         rows = (int) Math.Ceiling ((double)items.Count / (double)cols);
1826                                 }
1827                         }
1828
1829                         item_index_matrix = new int [rows, cols];
1830                 }
1831
1832                 // When using custom column width, we look for the minimum one
1833                 void CalculateCustomColumnWidth ()
1834                 {
1835                         int min_width = Int32.MaxValue;
1836                         for (int i = 0; i < columns.Count; i++) {
1837                                 int col_width = columns [i].Width;
1838
1839                                 if (col_width < min_width)
1840                                         min_width = col_width;
1841                         }
1842
1843                         custom_column_width = min_width;
1844                 }
1845
1846                 void LayoutIcons (Size item_size, bool left_aligned, int x_spacing, int y_spacing)
1847                 {
1848                         header_control.Visible = false;
1849                         header_control.Size = Size.Empty;
1850                         item_control.Visible = true;
1851                         item_control.Location = Point.Empty;
1852                         ItemSize = item_size; // Cache item size
1853 #if NET_2_0
1854                         this.x_spacing = x_spacing;
1855                         this.y_spacing = y_spacing;
1856 #endif
1857
1858                         if (items.Count == 0)
1859                                 return;
1860
1861                         Size sz = item_size;
1862
1863                         CalculateRowsAndCols (sz, left_aligned, x_spacing, y_spacing);
1864
1865                         layout_wd = UseCustomColumnWidth ? cols * custom_column_width : cols * (sz.Width + x_spacing) - x_spacing;
1866                         layout_ht = rows * (sz.Height + y_spacing) - y_spacing;
1867
1868 #if NET_2_0
1869                         if (virtual_mode) { // no actual assignment is needed on items for virtual mode
1870                                 item_control.Size = new Size (layout_wd, layout_ht);
1871                                 return;
1872                         }
1873
1874                         bool using_groups = UsingGroups;
1875                         if (using_groups) // the groups layout will override layout_ht
1876                                 CalculateGroupsLayout (sz, y_spacing, 0);
1877 #endif
1878
1879                         int row = 0, col = 0;
1880                         int x = 0, y = 0;
1881                         int display_index = 0;
1882
1883                         for (int i = 0; i < items.Count; i++) {
1884                                 ListViewItem item = items [i];
1885 #if NET_2_0
1886                                 if (using_groups) {
1887                                         ListViewGroup group = item.Group;
1888                                         if (group == null)
1889                                                 group = groups.DefaultGroup;
1890
1891                                         Point group_items_loc = group.items_area_location;
1892                                         int current_item = group.current_item++;
1893                                         int starting_row = group.starting_row;
1894
1895                                         display_index = group.starting_item + current_item;
1896                                         row = (current_item / cols);
1897                                         col = current_item % cols;
1898
1899                                         x = UseCustomColumnWidth ? col * custom_column_width : col * (item_size.Width + x_spacing);
1900                                         y = row * (item_size.Height + y_spacing) + group_items_loc.Y;
1901
1902                                         SetItemLocation (display_index, x, y, row + starting_row, col);
1903                                         SetItemAtDisplayIndex (display_index, i);
1904                                         item_index_matrix [row + starting_row, col] = i;
1905
1906                                 } else
1907 #endif
1908                                 {
1909                                         x = UseCustomColumnWidth ? col * custom_column_width : col * (item_size.Width + x_spacing);
1910                                         y = row * (item_size.Height + y_spacing);
1911                                         display_index = i; // Same as item index in Items
1912
1913                                         SetItemLocation (i, x, y, row, col);
1914                                         item_index_matrix [row, col] = i;
1915
1916                                         if (left_aligned) {
1917                                                 row++;
1918                                                 if (row == rows) {
1919                                                         row = 0;
1920                                                         col++;
1921                                                 }
1922                                         } else {
1923                                                 if (++col == cols) {
1924                                                         col = 0;
1925                                                         row++;
1926                                                 }
1927                                         }
1928                                 }
1929
1930                                 item.Layout ();
1931                                 item.DisplayIndex = display_index;
1932 #if NET_2_0
1933                                 item.SetPosition (new Point (x, y));
1934 #endif
1935                         }
1936
1937                         item_control.Size = new Size (layout_wd, layout_ht);
1938                 }
1939
1940 #if NET_2_0
1941                 void CalculateGroupsLayout (Size item_size, int y_spacing, int y_origin)
1942                 {
1943                         int y = y_origin;
1944                         bool details = view == View.Details;
1945
1946                         for (int i = 0; i < groups.InternalCount; i++) {
1947                                 ListViewGroup group = groups.GetInternalGroup (i);
1948                                 if (group.ItemCount == 0)
1949                                         continue;
1950
1951                                 y += LayoutGroupHeader (group, y, item_size.Height, y_spacing, details ? group.ItemCount : group.rows);
1952                         }
1953
1954                         layout_ht = y; // Update height taking into account Groups' headers heights
1955                 }
1956
1957                 int LayoutGroupHeader (ListViewGroup group, int y_origin, int item_height, int y_spacing, int rows)
1958                 {
1959                         Rectangle client_area = ClientRectangle;
1960                         int header_height = Font.Height + 15; // one line height + some padding
1961
1962                         group.HeaderBounds = new Rectangle (0, y_origin, client_area.Width - v_scroll.Width, header_height);
1963                         group.items_area_location = new Point (0, y_origin + header_height);
1964
1965                         int items_area_height = ((item_height + y_spacing) * rows);
1966                         return header_height + items_area_height + 10; // Add a small bottom margin
1967                 }
1968
1969                 void CalculateDetailsGroupItemsCount ()
1970                 {
1971                         int items = 0;
1972
1973                         groups.DefaultGroup.ItemCount = GetDefaultGroupItems ();
1974                         for (int i = 0; i < groups.InternalCount; i++) {
1975                                 ListViewGroup group = groups.GetInternalGroup (i);
1976                                 int items_in_group = group.GetActualItemCount ();
1977
1978                                 if (items_in_group == 0)
1979                                         continue;
1980
1981                                 group.starting_item = items;
1982                                 group.current_item = 0; // Reset layout.
1983                                 items += items_in_group;
1984                         }
1985                 }
1986 #endif
1987
1988                 void LayoutHeader ()
1989                 {
1990                         int x = 0;
1991                         for (int i = 0; i < Columns.Count; i++) {
1992                                 ColumnHeader col = GetReorderedColumn (i);
1993                                 col.X = x;
1994                                 col.Y = 0;
1995                                 col.CalcColumnHeader ();
1996                                 x += col.Wd;
1997                         }
1998
1999                         layout_wd = x;
2000
2001                         if (x < ClientRectangle.Width)
2002                                 x = ClientRectangle.Width;
2003
2004                         if (header_style == ColumnHeaderStyle.None) {
2005                                 header_control.Visible = false;
2006                                 header_control.Size = Size.Empty;
2007                                 layout_wd = ClientRectangle.Width;
2008                         } else {
2009                                 header_control.Width = x;
2010                                 header_control.Height = columns.Count > 0 ? columns [0].Ht : ThemeEngine.Current.ListViewGetHeaderHeight (this, Font);
2011                                 header_control.Visible = true;
2012                         }
2013                 }
2014
2015                 void LayoutDetails ()
2016                 {
2017                         LayoutHeader ();
2018
2019                         if (columns.Count == 0) {
2020                                 item_control.Visible = false;
2021                                 layout_wd = ClientRectangle.Width;
2022                                 layout_ht = ClientRectangle.Height;
2023                                 return;
2024                         }
2025
2026                         item_control.Visible = true;
2027                         item_control.Location = Point.Empty;
2028                         item_control.Width = ClientRectangle.Width;
2029
2030                         int item_height = GetDetailsItemHeight ();
2031                         ItemSize = new Size (0, item_height); // We only cache Height for details view
2032                         int y = header_control.Height;
2033                         layout_ht = y + (item_height * items.Count);
2034                         if (items.Count > 0 && grid_lines) // some space for bottom gridline
2035                                 layout_ht += 2;
2036
2037 #if NET_2_0
2038                         bool using_groups = UsingGroups;
2039                         if (using_groups) {
2040                                 // Observe that this routines will override our layout_ht value
2041                                 CalculateDetailsGroupItemsCount ();
2042                                 CalculateGroupsLayout (ItemSize, 2, y);
2043                         }
2044
2045                         if (virtual_mode) // no assgination on items is needed
2046                                 return;
2047 #endif
2048
2049                         for (int i = 0; i < items.Count; i++) {
2050                                 ListViewItem item = items [i];
2051
2052                                 int display_index;
2053                                 int item_y;
2054
2055 #if NET_2_0
2056                                 if (using_groups) {
2057                                         ListViewGroup group = item.Group;
2058                                         if (group == null)
2059                                                 group = groups.DefaultGroup;
2060
2061                                         int current_item = group.current_item++;
2062                                         Point group_items_loc = group.items_area_location;
2063                                         display_index = group.starting_item + current_item;
2064
2065                                         y = item_y = current_item * (item_height + 2) + group_items_loc.Y;
2066                                         SetItemLocation (display_index, 0, item_y, 0, 0);
2067                                         SetItemAtDisplayIndex (display_index, i);
2068                                 } else
2069 #endif
2070                                 {
2071                                         display_index = i;
2072                                         item_y = y;
2073                                         SetItemLocation (i, 0, item_y, 0, 0);
2074                                         y += item_height;
2075                                 }
2076
2077                                 item.Layout ();
2078                                 item.DisplayIndex = display_index;
2079 #if NET_2_0
2080                                 item.SetPosition (new Point (0, item_y));
2081 #endif
2082                         }
2083                 }
2084
2085                 private void AdjustItemsPositionArray (int count)
2086                 {
2087 #if  NET_2_0
2088                         // In virtual mode we compute the positions on the fly.
2089                         if (virtual_mode)
2090                                 return;
2091 #endif
2092                         if (items_location.Length >= count)
2093                                 return;
2094
2095                         // items_location, items_matrix_location and reordered_items_indices must keep the same length
2096                         count = Math.Max (count, items_location.Length * 2);
2097                         items_location = new Point [count];
2098                         items_matrix_location = new ItemMatrixLocation [count];
2099                         reordered_items_indices = new int [count];
2100                 }
2101
2102                 private void CalculateListView (ListViewAlignment align)
2103                 {
2104                         CalcTextSize ();
2105
2106                         AdjustItemsPositionArray (items.Count);
2107
2108                         switch (view) {
2109                         case View.Details:
2110                                 LayoutDetails ();
2111                                 break;
2112
2113                         case View.SmallIcon:
2114                                 LayoutIcons (SmallIconItemSize, alignment == ListViewAlignment.Left,
2115                                                 ThemeEngine.Current.ListViewHorizontalSpacing, 2);
2116                                 break;
2117
2118                         case View.LargeIcon:
2119                                 LayoutIcons (LargeIconItemSize, alignment == ListViewAlignment.Left,
2120                                         ThemeEngine.Current.ListViewHorizontalSpacing,
2121                                         ThemeEngine.Current.ListViewVerticalSpacing);
2122                                 break;
2123
2124                         case View.List:
2125                                 LayoutIcons (SmallIconItemSize, true,
2126                                                 ThemeEngine.Current.ListViewHorizontalSpacing, 2);
2127                                 break;
2128 #if NET_2_0
2129                         case View.Tile:
2130                                 if (!Application.VisualStylesEnabled)
2131                                         goto case View.LargeIcon;
2132
2133                                 LayoutIcons (TileItemSize, alignment == ListViewAlignment.Left,
2134                                                 ThemeEngine.Current.ListViewHorizontalSpacing,
2135                                                 ThemeEngine.Current.ListViewVerticalSpacing);
2136                                 break;
2137 #endif
2138                         }
2139
2140                         CalculateScrollBars ();
2141                 }
2142
2143                 internal Point GetItemLocation (int index)
2144                 {
2145                         Point loc = Point.Empty;
2146 #if NET_2_0
2147                         if (virtual_mode)
2148                                 loc = GetFixedItemLocation (index);
2149                         else
2150 #endif
2151                                 loc = items_location [index];
2152
2153                         loc.X -= h_marker; // Adjust to scroll
2154                         loc.Y -= v_marker;
2155
2156                         return loc;
2157                 }
2158
2159 #if NET_2_0
2160                 Point GetFixedItemLocation (int index)
2161                 {
2162                         Point loc = Point.Empty;
2163
2164                         switch (view) {
2165                                 case View.LargeIcon:
2166                                 case View.SmallIcon:
2167                                         loc.X = index % cols * (item_size.Width + x_spacing);
2168                                         loc.Y = index / cols * (item_size.Height + y_spacing);
2169                                         break;
2170                                 case View.List:
2171                                         loc.X = index / rows * (item_size.Width + x_spacing);
2172                                         loc.Y = index % rows * (item_size.Height + y_spacing);
2173                                         break;
2174                                 case View.Details:
2175                                         loc.Y = header_control.Height + (index * item_size.Height);
2176                                         break;
2177                         }
2178
2179                         return loc;
2180                 }
2181 #endif
2182
2183                 internal int GetItemIndex (int display_index)
2184                 {
2185 #if NET_2_0
2186                         if (virtual_mode)
2187                                 return display_index; // no reordering in virtual mode.
2188 #endif
2189                         return reordered_items_indices [display_index];
2190                 }
2191
2192                 internal ListViewItem GetItemAtDisplayIndex (int display_index)
2193                 {
2194 #if NET_2_0
2195                         // in virtual mode there's no reordering at all.
2196                         if (virtual_mode)
2197                                 return items [display_index];
2198 #endif
2199                         return items [reordered_items_indices [display_index]];
2200                 }
2201
2202                 internal void SetItemAtDisplayIndex (int display_index, int index)
2203                 {
2204                         reordered_items_indices [display_index] = index;
2205                 }
2206
2207                 private bool KeySearchString (KeyEventArgs ke)
2208                 {
2209                         int current_tickcnt = Environment.TickCount;
2210                         if (keysearch_tickcnt > 0 && current_tickcnt - keysearch_tickcnt > keysearch_keydelay) {
2211                                 keysearch_text = string.Empty;
2212                         }
2213
2214                         if (!Char.IsLetterOrDigit ((char)ke.KeyCode))
2215                                 return false;
2216
2217                         keysearch_text += (char)ke.KeyCode;
2218                         keysearch_tickcnt = current_tickcnt;
2219
2220                         int prev_focused = FocusedItem == null ? 0 : FocusedItem.DisplayIndex;
2221                         int start = prev_focused + 1 < Items.Count ? prev_focused + 1 : 0;
2222
2223                         ListViewItem item = FindItemWithText (keysearch_text, false, start, true, true);
2224                         if (item != null && prev_focused != item.DisplayIndex) {
2225                                 selected_indices.Clear ();
2226
2227                                 SetFocusedItem (item.DisplayIndex);
2228                                 item.Selected = true;
2229                                 EnsureVisible (GetItemIndex (item.DisplayIndex));
2230                         }
2231
2232                         return true;
2233                 }
2234
2235                 private void OnItemsChanged ()
2236                 {
2237                         ResetSearchString ();
2238                 }
2239
2240                 private void ResetSearchString ()
2241                 {
2242                         keysearch_text = String.Empty;
2243                 }
2244
2245                 int GetAdjustedIndex (Keys key)
2246                 {
2247                         int result = -1;
2248
2249                         if (View == View.Details) {
2250                                 switch (key) {
2251                                 case Keys.Up:
2252                                         result = FocusedItem.DisplayIndex - 1;
2253                                         break;
2254                                 case Keys.Down:
2255                                         result = FocusedItem.DisplayIndex + 1;
2256                                         if (result == items.Count)
2257                                                 result = -1;
2258                                         break;
2259                                 case Keys.PageDown:
2260                                         int last_index = LastVisibleIndex;
2261                                         Rectangle item_rect = new Rectangle (GetItemLocation (last_index), ItemSize);
2262                                         if (item_rect.Bottom > item_control.ClientRectangle.Bottom)
2263                                                 last_index--;
2264                                         if (FocusedItem.DisplayIndex == last_index) {
2265                                                 if (FocusedItem.DisplayIndex < Items.Count - 1) {
2266                                                         int page_size = item_control.Height / ItemSize.Height - 1;
2267                                                         result = FocusedItem.DisplayIndex + page_size - 1;
2268                                                         if (result >= Items.Count)
2269                                                                 result = Items.Count - 1;
2270                                                 }
2271                                         } else
2272                                                 result = last_index;
2273                                         break;
2274                                 case Keys.PageUp:
2275                                         int first_index = FirstVisibleIndex;
2276                                         if (GetItemLocation (first_index).Y < 0)
2277                                                 first_index++;
2278                                         if (FocusedItem.DisplayIndex == first_index) {
2279                                                 if (first_index > 0) {
2280                                                         int page_size = item_control.Height / ItemSize.Height - 1;
2281                                                         result = first_index - page_size + 1;
2282                                                         if (result < 0)
2283                                                                 result = 0;
2284                                                 }
2285                                         } else
2286                                                 result = first_index;
2287                                         break;
2288                                 }
2289                                 return result;
2290                         }
2291
2292 #if NET_2_0
2293                         if (virtual_mode)
2294                                 return GetFixedAdjustedIndex (key);
2295 #endif
2296
2297                         ItemMatrixLocation item_matrix_location = items_matrix_location [FocusedItem.DisplayIndex];
2298                         int row = item_matrix_location.Row;
2299                         int col = item_matrix_location.Col;
2300
2301                         int adjusted_index = -1;
2302
2303                         switch (key) {
2304                         case Keys.Left:
2305                                 if (col == 0)
2306                                         return -1;
2307                                 adjusted_index = item_index_matrix [row, col - 1];
2308                                 break;
2309
2310                         case Keys.Right:
2311                                 if (col == (cols - 1))
2312                                         return -1;
2313                                 while (item_index_matrix [row, col + 1] == 0) {
2314                                         row--;
2315                                         if (row < 0)
2316                                                 return -1;
2317                                 }
2318                                 adjusted_index = item_index_matrix [row, col + 1];
2319                                 break;
2320
2321                         case Keys.Up:
2322                                 if (row == 0)
2323                                         return -1;
2324                                 while (item_index_matrix [row - 1, col] == 0 && row != 1) {
2325                                         col--;
2326                                         if (col < 0)
2327                                                 return -1;
2328                                 }
2329                                 adjusted_index = item_index_matrix [row - 1, col];
2330                                 break;
2331
2332                         case Keys.Down:
2333                                 if (row == (rows - 1) || row == Items.Count - 1)
2334                                         return -1;
2335                                 while (item_index_matrix [row + 1, col] == 0) {
2336                                         col--;
2337                                         if (col < 0)
2338                                                 return -1;
2339                                 }
2340                                 adjusted_index = item_index_matrix [row + 1, col];
2341                                 break;
2342
2343                         default:
2344                                 return -1;
2345                         }
2346
2347                         return items [adjusted_index].DisplayIndex;
2348                 }
2349
2350 #if NET_2_0
2351                 // Used for virtual mode, where items *cannot* be re-arranged
2352                 int GetFixedAdjustedIndex (Keys key)
2353                 {
2354                         int result;
2355
2356                         switch (key) {
2357                                 case Keys.Left:
2358                                         if (view == View.List)
2359                                                 result = focused_item_index - rows;
2360                                         else
2361                                                 result = focused_item_index - 1;
2362                                         break;
2363                                 case Keys.Right:
2364                                         if (view == View.List)
2365                                                 result = focused_item_index + rows;
2366                                         else
2367                                                 result = focused_item_index + 1;
2368                                         break;
2369                                 case Keys.Up:
2370                                         if (view != View.List)
2371                                                 result = focused_item_index - cols;
2372                                         else
2373                                                 result = focused_item_index - 1;
2374                                         break;
2375                                 case Keys.Down:
2376                                         if (view != View.List)
2377                                                 result = focused_item_index + cols;
2378                                         else
2379                                                 result = focused_item_index + 1;
2380                                         break;
2381                                 default:
2382                                         return -1;
2383
2384                         }
2385
2386                         if (result < 0 || result >= items.Count)
2387                                 result = focused_item_index;
2388
2389                         return result;
2390                 }
2391 #endif
2392
2393                 ListViewItem selection_start;
2394
2395                 private bool SelectItems (ArrayList sel_items)
2396                 {
2397                         bool changed = false;
2398                         foreach (ListViewItem item in SelectedItems)
2399                                 if (!sel_items.Contains (item)) {
2400                                         item.Selected = false;
2401                                         changed = true;
2402                                 }
2403                         foreach (ListViewItem item in sel_items)
2404                                 if (!item.Selected) {
2405                                         item.Selected = true;
2406                                         changed = true;
2407                                 }
2408                         return changed;
2409                 }
2410
2411                 private void UpdateMultiSelection (int index, bool reselect)
2412                 {
2413                         bool shift_pressed = (XplatUI.State.ModifierKeys & Keys.Shift) != 0;
2414                         bool ctrl_pressed = (XplatUI.State.ModifierKeys & Keys.Control) != 0;
2415                         ListViewItem item = GetItemAtDisplayIndex (index);
2416
2417                         if (shift_pressed && selection_start != null) {
2418                                 ArrayList list = new ArrayList ();
2419                                 int start_index = selection_start.DisplayIndex;
2420                                 int start = Math.Min (start_index, index);
2421                                 int end = Math.Max (start_index, index);
2422                                 if (View == View.Details) {
2423                                         for (int i = start; i <= end; i++)
2424                                                 list.Add (GetItemAtDisplayIndex (i));
2425                                 } else {
2426                                         ItemMatrixLocation start_item_matrix_location = items_matrix_location [start];
2427                                         ItemMatrixLocation end_item_matrix_location = items_matrix_location [end];
2428                                         int left = Math.Min (start_item_matrix_location.Col, end_item_matrix_location.Col);
2429                                         int right = Math.Max (start_item_matrix_location.Col, end_item_matrix_location.Col);
2430                                         int top = Math.Min (start_item_matrix_location.Row, end_item_matrix_location.Row);
2431                                         int bottom = Math.Max (start_item_matrix_location.Row, end_item_matrix_location.Row);
2432
2433                                         for (int i = 0; i < items.Count; i++) {
2434                                                 ItemMatrixLocation item_matrix_loc = items_matrix_location [i];
2435
2436                                                 if (item_matrix_loc.Row >= top && item_matrix_loc.Row <= bottom &&
2437                                                                 item_matrix_loc.Col >= left && item_matrix_loc.Col <= right)
2438                                                         list.Add (GetItemAtDisplayIndex (i));
2439                                         }
2440                                 }
2441                                 SelectItems (list);
2442                         } else if (ctrl_pressed) {
2443                                 item.Selected = !item.Selected;
2444                                 selection_start = item;
2445                         } else {
2446                                 if (!reselect) {
2447                                         // do not unselect, and reselect the item
2448                                         foreach (int itemIndex in SelectedIndices) {
2449                                                 if (index == itemIndex)
2450                                                         continue;
2451                                                 items [itemIndex].Selected = false;
2452                                         }
2453                                 } else {
2454                                         SelectedItems.Clear ();
2455                                         item.Selected = true;
2456                                 }
2457                                 selection_start = item;
2458                         }
2459                 }
2460
2461                 internal override bool InternalPreProcessMessage (ref Message msg)
2462                 {
2463                         if (msg.Msg == (int)Msg.WM_KEYDOWN) {
2464                                 Keys key_data = (Keys)msg.WParam.ToInt32();
2465
2466                                 HandleNavKeys (key_data);
2467                         }
2468
2469                         return base.InternalPreProcessMessage (ref msg);
2470                 }
2471
2472                 bool HandleNavKeys (Keys key_data)
2473                 {
2474                         if (Items.Count == 0 || !item_control.Visible)
2475                                 return false;
2476
2477                         if (FocusedItem == null)
2478                                 SetFocusedItem (0);
2479
2480                         switch (key_data) {
2481                         case Keys.End:
2482                                 SelectIndex (Items.Count - 1);
2483                                 break;
2484
2485                         case Keys.Home:
2486                                 SelectIndex (0);
2487                                 break;
2488
2489                         case Keys.Left:
2490                         case Keys.Right:
2491                         case Keys.Up:
2492                         case Keys.Down:
2493                         case Keys.PageUp:
2494                         case Keys.PageDown:
2495                                 SelectIndex (GetAdjustedIndex (key_data));
2496                                 break;
2497
2498                         case Keys.Space:
2499                                 SelectIndex (focused_item_index);
2500                                 ToggleItemsCheckState ();
2501                                 break;
2502                         case Keys.Enter:
2503                                 if (selected_indices.Count > 0)
2504                                         OnItemActivate (EventArgs.Empty);
2505                                 break;
2506
2507                         default:
2508                                 return false;
2509                         }
2510
2511                         return true;
2512                 }
2513
2514                 void ToggleItemsCheckState ()
2515                 {
2516                         if (!CheckBoxes)
2517                                 return;
2518
2519                         // Don't modify check state if StateImageList has less than 2 elements
2520                         if (StateImageList != null && StateImageList.Images.Count < 2)
2521                                 return;
2522
2523                         if (SelectedIndices.Count > 0) {
2524                                 for (int i = 0; i < SelectedIndices.Count; i++) {
2525                                         ListViewItem item = Items [SelectedIndices [i]];
2526                                         item.Checked = !item.Checked;
2527                                 }
2528                                 return;
2529                         }
2530
2531                         if (FocusedItem != null) {
2532                                 FocusedItem.Checked = !FocusedItem.Checked;
2533                                 SelectIndex (FocusedItem.Index);
2534                         }
2535                 }
2536
2537                 void SelectIndex (int display_index)
2538                 {
2539                         if (display_index == -1)
2540                                 return;
2541
2542                         if (MultiSelect)
2543                                 UpdateMultiSelection (display_index, true);
2544                         else if (!GetItemAtDisplayIndex (display_index).Selected)
2545                                 GetItemAtDisplayIndex (display_index).Selected = true;
2546
2547                         SetFocusedItem (display_index);
2548                         EnsureVisible (GetItemIndex (display_index)); // Index in Items collection, not display index
2549                 }
2550
2551                 private void ListView_KeyDown (object sender, KeyEventArgs ke)
2552                 {
2553                         if (ke.Handled || Items.Count == 0 || !item_control.Visible)
2554                                 return;
2555
2556                         if (ke.Alt || ke.Control)
2557                                 return;
2558
2559                         ke.Handled = KeySearchString (ke);
2560                 }
2561
2562                 private MouseEventArgs TranslateMouseEventArgs (MouseEventArgs args)
2563                 {
2564                         Point loc = PointToClient (Control.MousePosition);
2565                         return new MouseEventArgs (args.Button, args.Clicks, loc.X, loc.Y, args.Delta);
2566                 }
2567
2568                 internal class ItemControl : Control {
2569
2570                         ListView owner;
2571                         ListViewItem clicked_item;
2572                         ListViewItem last_clicked_item;
2573                         bool hover_processed = false;
2574                         bool checking = false;
2575                         ListViewItem prev_hovered_item;
2576 #if NET_2_0
2577                         ListViewItem prev_tooltip_item;
2578 #endif
2579                         int clicks;
2580                         Point drag_begin = new Point (-1, -1);
2581                         internal int dragged_item_index = -1;
2582
2583                         ListViewLabelEditTextBox edit_text_box;
2584                         internal ListViewItem edit_item;
2585                         LabelEditEventArgs edit_args;
2586
2587                         public ItemControl (ListView owner)
2588                         {
2589                                 this.owner = owner;
2590                                 this.SetStyle (ControlStyles.DoubleBuffer, true);
2591                                 DoubleClick += new EventHandler(ItemsDoubleClick);
2592                                 MouseDown += new MouseEventHandler(ItemsMouseDown);
2593                                 MouseMove += new MouseEventHandler(ItemsMouseMove);
2594                                 MouseHover += new EventHandler(ItemsMouseHover);
2595                                 MouseUp += new MouseEventHandler(ItemsMouseUp);
2596                         }
2597
2598                         void ItemsDoubleClick (object sender, EventArgs e)
2599                         {
2600                                 if (owner.activation == ItemActivation.Standard)
2601                                         owner.OnItemActivate (EventArgs.Empty);
2602                         }
2603
2604                         enum BoxSelect {
2605                                 None,
2606                                 Normal,
2607                                 Shift,
2608                                 Control
2609                         }
2610
2611                         BoxSelect box_select_mode = BoxSelect.None;
2612                         IList prev_selection;
2613                         Point box_select_start;
2614
2615                         Rectangle box_select_rect;
2616                         internal Rectangle BoxSelectRectangle {
2617                                 get { return box_select_rect; }
2618                                 set {
2619                                         if (box_select_rect == value)
2620                                                 return;
2621
2622                                         InvalidateBoxSelectRect ();
2623                                         box_select_rect = value;
2624                                         InvalidateBoxSelectRect ();
2625                                 }
2626                         }
2627
2628                         void InvalidateBoxSelectRect ()
2629                         {
2630                                 if (BoxSelectRectangle.Size.IsEmpty)
2631                                         return;
2632
2633                                 Rectangle edge = BoxSelectRectangle;
2634                                 edge.X -= 1;
2635                                 edge.Y -= 1;
2636                                 edge.Width += 2;
2637                                 edge.Height = 2;
2638                                 Invalidate (edge);
2639                                 edge.Y = BoxSelectRectangle.Bottom - 1;
2640                                 Invalidate (edge);
2641                                 edge.Y = BoxSelectRectangle.Y - 1;
2642                                 edge.Width = 2;
2643                                 edge.Height = BoxSelectRectangle.Height + 2;
2644                                 Invalidate (edge);
2645                                 edge.X = BoxSelectRectangle.Right - 1;
2646                                 Invalidate (edge);
2647                         }
2648
2649                         private Rectangle CalculateBoxSelectRectangle (Point pt)
2650                         {
2651                                 int left = Math.Min (box_select_start.X, pt.X);
2652                                 int right = Math.Max (box_select_start.X, pt.X);
2653                                 int top = Math.Min (box_select_start.Y, pt.Y);
2654                                 int bottom = Math.Max (box_select_start.Y, pt.Y);
2655                                 return Rectangle.FromLTRB (left, top, right, bottom);
2656                         }
2657
2658                         bool BoxIntersectsItem (int index)
2659                         {
2660                                 Rectangle r = new Rectangle (owner.GetItemLocation (index), owner.ItemSize);
2661                                 if (owner.View != View.Details) {
2662                                         r.X += r.Width / 4;
2663                                         r.Y += r.Height / 4;
2664                                         r.Width /= 2;
2665                                         r.Height /= 2;
2666                                 }
2667                                 return BoxSelectRectangle.IntersectsWith (r);
2668                         }
2669
2670                         bool BoxIntersectsText (int index)
2671                         {
2672                                 Rectangle r = owner.GetItemAtDisplayIndex (index).TextBounds;
2673                                 return BoxSelectRectangle.IntersectsWith (r);
2674                         }
2675
2676                         ArrayList BoxSelectedItems {
2677                                 get {
2678                                         ArrayList result = new ArrayList ();
2679                                         for (int i = 0; i < owner.Items.Count; i++) {
2680                                                 bool intersects;
2681 #if NET_2_0
2682                                                 // Can't iterate over specific items properties in virtualmode
2683                                                 if (owner.View == View.Details && !owner.FullRowSelect && !owner.VirtualMode)
2684 #else
2685                                                 if (owner.View == View.Details && !owner.FullRowSelect)
2686 #endif
2687                                                         intersects = BoxIntersectsText (i);
2688                                                 else
2689                                                         intersects = BoxIntersectsItem (i);
2690
2691                                                 if (intersects)
2692                                                         result.Add (owner.GetItemAtDisplayIndex (i));
2693                                         }
2694                                         return result;
2695                                 }
2696                         }
2697
2698                         private bool PerformBoxSelection (Point pt)
2699                         {
2700                                 if (box_select_mode == BoxSelect.None)
2701                                         return false;
2702
2703                                 BoxSelectRectangle = CalculateBoxSelectRectangle (pt);
2704
2705                                 ArrayList box_items = BoxSelectedItems;
2706
2707                                 ArrayList items;
2708
2709                                 switch (box_select_mode) {
2710
2711                                 case BoxSelect.Normal:
2712                                         items = box_items;
2713                                         break;
2714
2715                                 case BoxSelect.Control:
2716                                         items = new ArrayList ();
2717                                         foreach (int index in prev_selection)
2718                                                 if (!box_items.Contains (owner.Items [index]))
2719                                                         items.Add (owner.Items [index]);
2720                                         foreach (ListViewItem item in box_items)
2721                                                 if (!prev_selection.Contains (item.Index))
2722                                                         items.Add (item);
2723                                         break;
2724
2725                                 case BoxSelect.Shift:
2726                                         items = box_items;
2727                                         foreach (ListViewItem item in box_items)
2728                                                 prev_selection.Remove (item.Index);
2729                                         foreach (int index in prev_selection)
2730                                                 items.Add (owner.Items [index]);
2731                                         break;
2732
2733                                 default:
2734                                         throw new Exception ("Unexpected Selection mode: " + box_select_mode);
2735                                 }
2736
2737                                 SuspendLayout ();
2738                                 owner.SelectItems (items);
2739                                 ResumeLayout ();
2740
2741                                 return true;
2742                         }
2743
2744                         private void ItemsMouseDown (object sender, MouseEventArgs me)
2745                         {
2746                                 owner.OnMouseDown (owner.TranslateMouseEventArgs (me));
2747                                 if (owner.items.Count == 0)
2748                                         return;
2749
2750                                 bool box_selecting = false;
2751                                 Size item_size = owner.ItemSize;
2752                                 Point pt = new Point (me.X, me.Y);
2753                                 for (int i = 0; i < owner.items.Count; i++) {
2754                                         Rectangle item_rect = new Rectangle (owner.GetItemLocation (i), item_size);
2755                                         if (!item_rect.Contains (pt))
2756                                                 continue;
2757
2758                                         // Actual item in 'i' position
2759                                         ListViewItem item = owner.GetItemAtDisplayIndex (i);
2760
2761                                         if (item.CheckRectReal.Contains (pt)) {
2762                                                 // Don't modify check state if we have only one image
2763                                                 // and if we are in 1.1 profile only take into account
2764                                                 // double clicks
2765                                                 if (owner.StateImageList != null && owner.StateImageList.Images.Count < 2
2766 #if !NET_2_0
2767                                                                 && me.Clicks == 1
2768 #endif
2769                                                                 )
2770                                                         return;
2771
2772                                                 // Generate an extra ItemCheck event when we got two clicks
2773                                                 // (Match weird .Net behaviour)
2774                                                 if (me.Clicks == 2)
2775                                                         item.Checked = !item.Checked;
2776
2777                                                 item.Checked = !item.Checked;
2778                                                 checking = true;
2779                                                 return;
2780                                         }
2781
2782                                         if (owner.View == View.Details) {
2783                                                 bool over_text = item.TextBounds.Contains (pt);
2784                                                 if (owner.FullRowSelect) {
2785                                                         clicked_item = item;
2786                                                         bool over_item_column = (me.X > owner.Columns[0].X && me.X < owner.Columns[0].X + owner.Columns[0].Width);
2787                                                         if (!over_text && over_item_column && owner.MultiSelect)
2788                                                                 box_selecting = true;
2789                                                 } else if (over_text)
2790                                                         clicked_item = item;
2791                                                 else
2792                                                         owner.SetFocusedItem (i);
2793                                         } else
2794                                                 clicked_item = item;
2795
2796                                         break;
2797                                 }
2798
2799
2800                                 if (clicked_item != null) {
2801                                         bool changed = !clicked_item.Selected;
2802                                         if (me.Button == MouseButtons.Left || (XplatUI.State.ModifierKeys == Keys.None && changed))
2803                                                 owner.SetFocusedItem (clicked_item.DisplayIndex);
2804
2805                                         if (owner.MultiSelect) {
2806                                                 bool reselect = (!owner.LabelEdit || changed);
2807                                                 if (me.Button == MouseButtons.Left || (XplatUI.State.ModifierKeys == Keys.None && changed))
2808                                                         owner.UpdateMultiSelection (clicked_item.DisplayIndex, reselect);
2809                                         } else {
2810                                                 clicked_item.Selected = true;
2811                                         }
2812
2813 #if NET_2_0
2814                                         if (owner.VirtualMode && changed) {
2815                                                 // Broken event - It's not fired from Item.Selected also
2816                                                 ListViewVirtualItemsSelectionRangeChangedEventArgs args =
2817                                                         new ListViewVirtualItemsSelectionRangeChangedEventArgs (0, owner.items.Count - 1, false);
2818
2819                                                 owner.OnVirtualItemsSelectionRangeChanged (args);
2820                                         }
2821 #endif
2822                                         // Report clicks only if the item was clicked. On MS the
2823                                         // clicks are only raised if you click an item
2824                                         clicks = me.Clicks;
2825                                         if (me.Clicks > 1) {
2826                                                 if (owner.CheckBoxes)
2827                                                         clicked_item.Checked = !clicked_item.Checked;
2828                                         } else if (me.Clicks == 1) {
2829                                                 if (owner.LabelEdit && !changed)
2830                                                         BeginEdit (clicked_item); // this is probably not the correct place to execute BeginEdit
2831                                         }
2832                                 } else {
2833                                         if (owner.MultiSelect)
2834                                                 box_selecting = true;
2835                                         else if (owner.SelectedItems.Count > 0)
2836                                                 owner.SelectedItems.Clear ();
2837                                 }
2838
2839                                 if (box_selecting) {
2840                                         Keys mods = XplatUI.State.ModifierKeys;
2841                                         if ((mods & Keys.Shift) != 0)
2842                                                 box_select_mode = BoxSelect.Shift;
2843                                         else if ((mods & Keys.Control) != 0)
2844                                                 box_select_mode = BoxSelect.Control;
2845                                         else
2846                                                 box_select_mode = BoxSelect.Normal;
2847                                         box_select_start = pt;
2848                                         prev_selection = owner.SelectedIndices.List.Clone () as IList;
2849                                 }
2850                         }
2851
2852                         private void ItemsMouseMove (object sender, MouseEventArgs me)
2853                         {
2854                                 bool done = PerformBoxSelection (new Point (me.X, me.Y));
2855
2856                                 owner.OnMouseMove (owner.TranslateMouseEventArgs (me));
2857
2858                                 if (done)
2859                                         return;
2860                                 if ((me.Button != MouseButtons.Left && me.Button != MouseButtons.Right) &&
2861                                         !hover_processed && owner.Activation != ItemActivation.OneClick
2862 #if NET_2_0
2863                                         && !owner.ShowItemToolTips
2864 #endif
2865                                                 )
2866                                         return;
2867
2868                                 Point pt = PointToClient (Control.MousePosition);
2869                                 ListViewItem item = owner.GetItemAt (pt.X, pt.Y);
2870
2871                                 if (hover_processed && item != null && item != prev_hovered_item) {
2872                                         hover_processed = false;
2873                                         XplatUI.ResetMouseHover (Handle);
2874                                 }
2875
2876                                 // Need to invalidate the item in HotTracking to show/hide the underline style
2877                                 if (owner.Activation == ItemActivation.OneClick) {
2878                                         if (item == null && owner.HotItemIndex != -1) {
2879 #if NET_2_0
2880                                                 if (owner.HotTracking)
2881                                                         Invalidate (owner.Items [owner.HotItemIndex].Bounds); // Previous one
2882 #endif
2883
2884                                                 Cursor = Cursors.Default;
2885                                                 owner.HotItemIndex = -1;
2886                                         } else if (item != null && owner.HotItemIndex == -1) {
2887 #if NET_2_0
2888                                                 if (owner.HotTracking)
2889                                                         Invalidate (item.Bounds);
2890 #endif
2891
2892                                                 Cursor = Cursors.Hand;
2893                                                 owner.HotItemIndex = item.Index;
2894                                         }
2895                                 }
2896
2897                                 if (me.Button == MouseButtons.Left || me.Button == MouseButtons.Right) {
2898                                         if (drag_begin.X == -1 && drag_begin.Y == -1) {
2899                                                 if (item != null) {
2900                                                         drag_begin = new Point (me.X, me.Y);
2901                                                         dragged_item_index = item.Index;
2902                                                 }
2903
2904                                         } else {
2905                                                 Rectangle r = new Rectangle (drag_begin, SystemInformation.DragSize);
2906                                                 if (!r.Contains (me.X, me.Y)) {
2907                                                         ListViewItem dragged_item  = owner.items [dragged_item_index];
2908                                                         owner.OnItemDrag (new ItemDragEventArgs (me.Button, dragged_item));
2909
2910                                                         drag_begin = new Point (-1, -1);
2911                                                         dragged_item_index = -1;
2912                                                 }
2913                                         }
2914                                 }
2915
2916 #if NET_2_0
2917                                 if (owner.ShowItemToolTips) {
2918                                         if (item == null) {
2919                                                 owner.item_tooltip.Active = false;
2920                                                 prev_tooltip_item = null;
2921                                         } else if (item != prev_tooltip_item && item.ToolTipText.Length > 0) {
2922                                                 owner.item_tooltip.Active = true;
2923                                                 owner.item_tooltip.SetToolTip (owner, item.ToolTipText);
2924                                                 prev_tooltip_item = item;
2925                                         }
2926                                 }
2927 #endif
2928
2929                         }
2930
2931                         private void ItemsMouseHover (object sender, EventArgs e)
2932                         {
2933                                 if (owner.hover_pending) {
2934                                         owner.OnMouseHover (e);
2935                                         owner.hover_pending = false;
2936                                 }
2937
2938                                 if (Capture)
2939                                         return;
2940
2941                                 hover_processed = true;
2942                                 Point pt = PointToClient (Control.MousePosition);
2943                                 ListViewItem item = owner.GetItemAt (pt.X, pt.Y);
2944                                 if (item == null)
2945                                         return;
2946
2947                                 prev_hovered_item = item;
2948
2949                                 if (owner.HoverSelection) {
2950                                         if (owner.MultiSelect)
2951                                                 owner.UpdateMultiSelection (item.Index, true);
2952                                         else
2953                                                 item.Selected = true;
2954
2955                                         owner.SetFocusedItem (item.DisplayIndex);
2956                                         Select (); // Make sure we have the focus, since MouseHover doesn't give it to us
2957                                 }
2958
2959 #if NET_2_0
2960                                 owner.OnItemMouseHover (new ListViewItemMouseHoverEventArgs (item));
2961 #endif
2962                         }
2963
2964                         void HandleClicks (MouseEventArgs me)
2965                         {
2966                                 // if the click is not on an item,
2967                                 // clicks remains as 0
2968                                 if (clicks > 1) {
2969 #if !NET_2_0
2970                                         owner.OnDoubleClick (EventArgs.Empty);
2971                                 } else if (clicks == 1) {
2972                                         owner.OnClick (EventArgs.Empty);
2973 #else
2974                                         owner.OnDoubleClick (EventArgs.Empty);
2975                                         owner.OnMouseDoubleClick (me);
2976                                 } else if (clicks == 1) {
2977                                         owner.OnClick (EventArgs.Empty);
2978                                         owner.OnMouseClick (me);
2979 #endif
2980                                 }
2981
2982                                 clicks = 0;
2983                         }
2984
2985                         private void ItemsMouseUp (object sender, MouseEventArgs me)
2986                         {
2987                                 MouseEventArgs owner_me = owner.TranslateMouseEventArgs (me);
2988                                 HandleClicks (owner_me);
2989
2990                                 Capture = false;
2991                                 if (owner.Items.Count == 0) {
2992                                         ResetMouseState ();
2993                                         owner.OnMouseUp (owner_me);
2994                                         return;
2995                                 }
2996
2997                                 Point pt = new Point (me.X, me.Y);
2998
2999                                 Rectangle rect = Rectangle.Empty;
3000                                 if (clicked_item != null) {
3001                                         if (owner.view == View.Details && !owner.full_row_select)
3002                                                 rect = clicked_item.GetBounds (ItemBoundsPortion.Label);
3003                                         else
3004                                                 rect = clicked_item.Bounds;
3005
3006                                         if (rect.Contains (pt)) {
3007                                                 switch (owner.activation) {
3008                                                 case ItemActivation.OneClick:
3009                                                         owner.OnItemActivate (EventArgs.Empty);
3010                                                         break;
3011
3012                                                 case ItemActivation.TwoClick:
3013                                                         if (last_clicked_item == clicked_item) {
3014                                                                 owner.OnItemActivate (EventArgs.Empty);
3015                                                                 last_clicked_item = null;
3016                                                         } else
3017                                                                 last_clicked_item = clicked_item;
3018                                                         break;
3019                                                 default:
3020                                                         // DoubleClick activation is handled in another handler
3021                                                         break;
3022                                                 }
3023                                         }
3024                                 } else if (!checking && owner.SelectedItems.Count > 0 && BoxSelectRectangle.Size.IsEmpty) {
3025                                         // Need this to clean up background clicks
3026                                         owner.SelectedItems.Clear ();
3027                                 }
3028
3029                                 ResetMouseState ();
3030                                 owner.OnMouseUp (owner_me);
3031                         }
3032
3033                         private void ResetMouseState ()
3034                         {
3035                                 clicked_item = null;
3036                                 box_select_start = Point.Empty;
3037                                 BoxSelectRectangle = Rectangle.Empty;
3038                                 prev_selection = null;
3039                                 box_select_mode = BoxSelect.None;
3040                                 checking = false;
3041
3042                                 // Clean these bits in case the mouse buttons were
3043                                 // released before firing ItemDrag
3044                                 dragged_item_index = -1;
3045                                 drag_begin = new Point (-1, -1);
3046                         }
3047
3048                         private void LabelEditFinished (object sender, EventArgs e)
3049                         {
3050                                 EndEdit (edit_item);
3051                         }
3052
3053                         private void LabelEditCancelled (object sender, EventArgs e)
3054                         {
3055                                 edit_args.SetLabel (null);
3056                                 EndEdit (edit_item);
3057                         }
3058
3059                         private void LabelTextChanged (object sender, EventArgs e)
3060                         {
3061                                 if (edit_args != null)
3062                                         edit_args.SetLabel (edit_text_box.Text);
3063                         }
3064
3065                         internal void BeginEdit (ListViewItem item)
3066                         {
3067                                 if (edit_item != null)
3068                                         EndEdit (edit_item);
3069
3070                                 if (edit_text_box == null) {
3071                                         edit_text_box = new ListViewLabelEditTextBox ();
3072                                         edit_text_box.BorderStyle = BorderStyle.FixedSingle;
3073                                         edit_text_box.EditingCancelled += new EventHandler (LabelEditCancelled);
3074                                         edit_text_box.EditingFinished += new EventHandler (LabelEditFinished);
3075                                         edit_text_box.TextChanged += new EventHandler (LabelTextChanged);
3076                                         edit_text_box.Visible = false;
3077                                         Controls.Add (edit_text_box);
3078                                 }
3079
3080                                 item.EnsureVisible();
3081
3082                                 edit_text_box.Reset ();
3083
3084                                 switch (owner.view) {
3085                                         case View.List:
3086                                         case View.SmallIcon:
3087                                         case View.Details:
3088                                                 edit_text_box.TextAlign = HorizontalAlignment.Left;
3089                                                 edit_text_box.Bounds = item.GetBounds (ItemBoundsPortion.Label);
3090                                                 SizeF sizef = TextRenderer.MeasureString (item.Text, item.Font);
3091                                                 edit_text_box.Width = (int)sizef.Width + 4;
3092                                                 edit_text_box.MaxWidth = owner.ClientRectangle.Width - edit_text_box.Bounds.X;
3093                                                 edit_text_box.WordWrap = false;
3094                                                 edit_text_box.Multiline = false;
3095                                                 break;
3096                                         case View.LargeIcon:
3097                                                 edit_text_box.TextAlign = HorizontalAlignment.Center;
3098                                                 edit_text_box.Bounds = item.GetBounds (ItemBoundsPortion.Label);
3099                                                 sizef = TextRenderer.MeasureString (item.Text, item.Font);
3100                                                 edit_text_box.Width = (int)sizef.Width + 4;
3101                                                 edit_text_box.MaxWidth = item.GetBounds(ItemBoundsPortion.Entire).Width;
3102                                                 edit_text_box.MaxHeight = owner.ClientRectangle.Height - edit_text_box.Bounds.Y;
3103                                                 edit_text_box.WordWrap = true;
3104                                                 edit_text_box.Multiline = true;
3105                                                 break;
3106                                 }
3107
3108                                 edit_item = item;
3109
3110                                 edit_text_box.Text = item.Text;
3111                                 edit_text_box.Font = item.Font;
3112                                 edit_text_box.Visible = true;
3113                                 edit_text_box.Focus ();
3114                                 edit_text_box.SelectAll ();
3115
3116                                 edit_args = new LabelEditEventArgs (owner.Items.IndexOf (edit_item));
3117                                 owner.OnBeforeLabelEdit (edit_args);
3118
3119                                 if (edit_args.CancelEdit)
3120                                         EndEdit (item);
3121                         }
3122
3123                         internal void CancelEdit (ListViewItem item)
3124                         {
3125                                 // do nothing if there's no item being edited, or if the
3126                                 // item being edited is not the one passed in
3127                                 if (edit_item == null || edit_item != item)
3128                                         return;
3129
3130                                 edit_args.SetLabel (null);
3131                                 EndEdit (item);
3132                         }
3133
3134                         internal void EndEdit (ListViewItem item)
3135                         {
3136                                 // do nothing if there's no item being edited, or if the
3137                                 // item being edited is not the one passed in
3138                                 if (edit_item == null || edit_item != item)
3139                                         return;
3140
3141                                 if (edit_text_box != null) {
3142                                         if (edit_text_box.Visible)
3143                                                 edit_text_box.Visible = false;
3144                                         // ensure listview gets focus
3145                                         owner.Focus ();
3146                                 }
3147
3148                                 // Same as TreeView.EndEdit: need to have focus in synch
3149                                 Application.DoEvents ();
3150
3151                                 //
3152                                 // Create a new instance, since we could get a call to BeginEdit
3153                                 // from the handler and have fields out of synch
3154                                 //
3155                                 LabelEditEventArgs args = new LabelEditEventArgs (item.Index, edit_args.Label);
3156                                 edit_item = null;
3157
3158                                 owner.OnAfterLabelEdit (args);
3159                                 if (!args.CancelEdit && args.Label != null)
3160                                         item.Text = args.Label;
3161                         }
3162
3163                         internal override void OnPaintInternal (PaintEventArgs pe)
3164                         {
3165                                 ThemeEngine.Current.DrawListViewItems (pe.Graphics, pe.ClipRectangle, owner);
3166                         }
3167
3168                         protected override void WndProc (ref Message m)
3169                         {
3170                                 switch ((Msg)m.Msg) {
3171                                 case Msg.WM_KILLFOCUS:
3172                                         owner.Select (false, true);
3173                                         break;
3174                                 case Msg.WM_SETFOCUS:
3175                                         owner.Select (false, true);
3176                                         break;
3177                                 case Msg.WM_LBUTTONDOWN:
3178                                         if (!Focused)
3179                                                 owner.Select (false, true);
3180                                         break;
3181                                 case Msg.WM_RBUTTONDOWN:
3182                                         if (!Focused)
3183                                                 owner.Select (false, true);
3184                                         break;
3185                                 default:
3186                                         break;
3187                                 }
3188                                 base.WndProc (ref m);
3189                         }
3190                 }
3191
3192                 internal class ListViewLabelEditTextBox : TextBox
3193                 {
3194                         int max_width = -1;
3195                         int min_width = -1;
3196
3197                         int max_height = -1;
3198                         int min_height = -1;
3199
3200                         int old_number_lines = 1;
3201
3202                         SizeF text_size_one_char;
3203
3204                         public ListViewLabelEditTextBox ()
3205                         {
3206                                 min_height = DefaultSize.Height;
3207                                 text_size_one_char = TextRenderer.MeasureString ("B", Font);
3208                         }
3209
3210                         public int MaxWidth {
3211                                 set {
3212                                         if (value < min_width)
3213                                                 max_width = min_width;
3214                                         else
3215                                                 max_width = value;
3216                                 }
3217                         }
3218
3219                         public int MaxHeight {
3220                                 set {
3221                                         if (value < min_height)
3222                                                 max_height = min_height;
3223                                         else
3224                                                 max_height = value;
3225                                 }
3226                         }
3227
3228                         public new int Width {
3229                                 get {
3230                                         return base.Width;
3231                                 }
3232                                 set {
3233                                         min_width = value;
3234                                         base.Width = value;
3235                                 }
3236                         }
3237
3238                         public override Font Font {
3239                                 get {
3240                                         return base.Font;
3241                                 }
3242                                 set {
3243                                         base.Font = value;
3244                                         text_size_one_char = TextRenderer.MeasureString ("B", Font);
3245                                 }
3246                         }
3247
3248                         protected override void OnTextChanged (EventArgs e)
3249                         {
3250                                 SizeF text_size = TextRenderer.MeasureString (Text, Font);
3251
3252                                 int new_width = (int)text_size.Width + 8;
3253
3254                                 if (!Multiline)
3255                                         ResizeTextBoxWidth (new_width);
3256                                 else {
3257                                         if (Width != max_width)
3258                                                 ResizeTextBoxWidth (new_width);
3259
3260                                         int number_lines = Lines.Length;
3261
3262                                         if (number_lines != old_number_lines) {
3263                                                 int new_height = number_lines * (int)text_size_one_char.Height + 4;
3264                                                 old_number_lines = number_lines;
3265
3266                                                 ResizeTextBoxHeight (new_height);
3267                                         }
3268                                 }
3269
3270                                 base.OnTextChanged (e);
3271                         }
3272
3273                         protected override bool IsInputKey (Keys key_data)
3274                         {
3275                                 if ((key_data & Keys.Alt) == 0) {
3276                                         switch (key_data & Keys.KeyCode) {
3277                                                 case Keys.Enter:
3278                                                         return true;
3279                                                 case Keys.Escape:
3280                                                         return true;
3281                                         }
3282                                 }
3283                                 return base.IsInputKey (key_data);
3284                         }
3285
3286                         protected override void OnKeyDown (KeyEventArgs e)
3287                         {
3288                                 if (!Visible)
3289                                         return;
3290
3291                                 switch (e.KeyCode) {
3292                                 case Keys.Return:
3293                                         Visible = false;
3294                                         e.Handled = true;
3295                                         OnEditingFinished (e);
3296                                         break;
3297                                 case Keys.Escape:
3298                                         Visible = false;
3299                                         e.Handled = true;
3300                                         OnEditingCancelled (e);
3301                                         break;
3302                                 }
3303                         }
3304
3305                         protected override void OnLostFocus (EventArgs e)
3306                         {
3307                                 if (Visible) {
3308                                         OnEditingFinished (e);
3309                                 }
3310                         }
3311
3312                         protected void OnEditingCancelled (EventArgs e)
3313                         {
3314                                 EventHandler eh = (EventHandler)(Events [EditingCancelledEvent]);
3315                                 if (eh != null)
3316                                         eh (this, e);
3317                         }
3318
3319                         protected void OnEditingFinished (EventArgs e)
3320                         {
3321                                 EventHandler eh = (EventHandler)(Events [EditingFinishedEvent]);
3322                                 if (eh != null)
3323                                         eh (this, e);
3324                         }
3325
3326                         private void ResizeTextBoxWidth (int new_width)
3327                         {
3328                                 if (new_width > max_width)
3329                                         base.Width = max_width;
3330                                 else
3331                                 if (new_width >= min_width)
3332                                         base.Width = new_width;
3333                                 else
3334                                         base.Width = min_width;
3335                         }
3336
3337                         private void ResizeTextBoxHeight (int new_height)
3338                         {
3339                                 if (new_height > max_height)
3340                                         base.Height = max_height;
3341                                 else
3342                                 if (new_height >= min_height)
3343                                         base.Height = new_height;
3344                                 else
3345                                         base.Height = min_height;
3346                         }
3347
3348                         public void Reset ()
3349                         {
3350                                 max_width = -1;
3351                                 min_width = -1;
3352
3353                                 max_height = -1;
3354
3355                                 old_number_lines = 1;
3356
3357                                 Text = String.Empty;
3358
3359                                 Size = DefaultSize;
3360                         }
3361
3362                         static object EditingCancelledEvent = new object ();
3363                         public event EventHandler EditingCancelled {
3364                                 add { Events.AddHandler (EditingCancelledEvent, value); }
3365                                 remove { Events.RemoveHandler (EditingCancelledEvent, value); }
3366                         }
3367
3368                         static object EditingFinishedEvent = new object ();
3369                         public event EventHandler EditingFinished {
3370                                 add { Events.AddHandler (EditingFinishedEvent, value); }
3371                                 remove { Events.RemoveHandler (EditingFinishedEvent, value); }
3372                         }
3373                 }
3374
3375                 internal override void OnPaintInternal (PaintEventArgs pe)
3376                 {
3377                         if (updating)
3378                                 return;
3379
3380                         CalculateScrollBars ();
3381                 }
3382
3383                 void FocusChanged (object o, EventArgs args)
3384                 {
3385                         if (Items.Count == 0)
3386                                 return;
3387
3388                         if (FocusedItem == null)
3389                                 SetFocusedItem (0);
3390
3391                         ListViewItem focused_item = FocusedItem;
3392
3393                         if (focused_item.ListView != null) {
3394                                 focused_item.Invalidate ();
3395                                 focused_item.Layout ();
3396                                 focused_item.Invalidate ();
3397                         }
3398                 }
3399
3400                 private void ListView_Invalidated (object sender, InvalidateEventArgs e)
3401                 {
3402                         // When the ListView is invalidated, we need to invalidate
3403                         // the child controls.
3404                         header_control.Invalidate ();
3405                         item_control.Invalidate ();
3406                 }
3407
3408                 private void ListView_MouseEnter (object sender, EventArgs args)
3409                 {
3410                         hover_pending = true; // Need a hover event for every Enter/Leave cycle
3411                 }
3412
3413                 private void ListView_MouseWheel (object sender, MouseEventArgs me)
3414                 {
3415                         if (Items.Count == 0)
3416                                 return;
3417
3418                         int lines = me.Delta / 120;
3419
3420                         if (lines == 0)
3421                                 return;
3422
3423                         switch (View) {
3424                         case View.Details:
3425                         case View.SmallIcon:
3426                                 Scroll (v_scroll, -ItemSize.Height * SystemInformation.MouseWheelScrollLines * lines);
3427                                 break;
3428                         case View.LargeIcon:
3429                                 Scroll (v_scroll, -(ItemSize.Height + ThemeEngine.Current.ListViewVerticalSpacing)  * lines);
3430                                 break;
3431                         case View.List:
3432                                 Scroll (h_scroll, -ItemSize.Width * lines);
3433                                 break;
3434 #if NET_2_0
3435                         case View.Tile:
3436                                 if (!Application.VisualStylesEnabled)
3437                                         goto case View.LargeIcon;
3438
3439                                 Scroll (v_scroll, -(ItemSize.Height + ThemeEngine.Current.ListViewVerticalSpacing) * 2 * lines);
3440                                 break;
3441 #endif
3442                         }
3443                 }
3444
3445                 private void ListView_SizeChanged (object sender, EventArgs e)
3446                 {
3447                         Redraw (true);
3448                 }
3449
3450                 private void SetFocusedItem (int display_index)
3451                 {
3452                         if (display_index != -1)
3453                                 GetItemAtDisplayIndex (display_index).Focused = true;
3454                         else if (focused_item_index != -1 && focused_item_index < items.Count) // Previous focused item
3455                                 GetItemAtDisplayIndex (focused_item_index).Focused = false;
3456                         focused_item_index = display_index;
3457 #if NET_2_0
3458                         if (display_index == -1)
3459                                 OnUIAFocusedItemChanged ();
3460                                 // otherwise the event will have been fired
3461                                 // when the ListViewItem's Focused was set
3462 #endif
3463                 }
3464
3465                 private void HorizontalScroller (object sender, EventArgs e)
3466                 {
3467                         item_control.EndEdit (item_control.edit_item);
3468
3469                         // Avoid unnecessary flickering, when button is
3470                         // kept pressed at the end
3471                         if (h_marker != h_scroll.Value) {
3472
3473                                 int pixels = h_marker - h_scroll.Value;
3474
3475                                 h_marker = h_scroll.Value;
3476                                 if (header_control.Visible)
3477                                         XplatUI.ScrollWindow (header_control.Handle, pixels, 0, false);
3478
3479                                 XplatUI.ScrollWindow (item_control.Handle, pixels, 0, false);
3480                         }
3481                 }
3482
3483                 private void VerticalScroller (object sender, EventArgs e)
3484                 {
3485                         item_control.EndEdit (item_control.edit_item);
3486
3487                         // Avoid unnecessary flickering, when button is
3488                         // kept pressed at the end
3489                         if (v_marker != v_scroll.Value) {
3490                                 int pixels = v_marker - v_scroll.Value;
3491                                 Rectangle area = item_control.ClientRectangle;
3492                                 if (header_control.Visible) {
3493                                         area.Y += header_control.Height;
3494                                         area.Height -= header_control.Height;
3495                                 }
3496
3497                                 v_marker = v_scroll.Value;
3498                                 XplatUI.ScrollWindow (item_control.Handle, area, 0, pixels, false);
3499                         }
3500                 }
3501
3502                 internal override bool IsInputCharInternal (char charCode)
3503                 {
3504                         return true;
3505                 }
3506                 #endregion      // Internal Methods Properties
3507
3508                 #region Protected Methods
3509                 protected override void CreateHandle ()
3510                 {
3511                         base.CreateHandle ();
3512                         is_selection_available = true;
3513                         for (int i = 0; i < SelectedItems.Count; i++)
3514                                 OnSelectedIndexChanged (EventArgs.Empty);
3515                 }
3516
3517                 protected override void Dispose (bool disposing)
3518                 {
3519                         if (disposing) {
3520                                 h_scroll.Dispose ();
3521                                 v_scroll.Dispose ();
3522
3523                                 large_image_list = null;
3524                                 small_image_list = null;
3525                                 state_image_list = null;
3526
3527                                 foreach (ColumnHeader col in columns)
3528                                         col.SetListView (null);
3529
3530 #if NET_2_0
3531                                 if (!virtual_mode) // In virtual mode we don't save the items
3532 #endif
3533                                         foreach (ListViewItem item in items)
3534                                                 item.Owner = null;
3535                         }
3536
3537                         base.Dispose (disposing);
3538                 }
3539
3540                 protected override bool IsInputKey (Keys keyData)
3541                 {
3542                         switch (keyData) {
3543                         case Keys.Up:
3544                         case Keys.Down:
3545                         case Keys.PageUp:
3546                         case Keys.PageDown:
3547                         case Keys.Right:
3548                         case Keys.Left:
3549                         case Keys.End:
3550                         case Keys.Home:
3551                                 return true;
3552
3553                         default:
3554                                 break;
3555                         }
3556
3557                         return base.IsInputKey (keyData);
3558                 }
3559
3560                 protected virtual void OnAfterLabelEdit (LabelEditEventArgs e)
3561                 {
3562                         LabelEditEventHandler eh = (LabelEditEventHandler)(Events [AfterLabelEditEvent]);
3563                         if (eh != null)
3564                                 eh (this, e);
3565                 }
3566
3567 #if NET_2_0
3568                 protected override void OnBackgroundImageChanged (EventArgs e)
3569                 {
3570                         item_control.BackgroundImage = BackgroundImage;
3571                         base.OnBackgroundImageChanged (e);
3572                 }
3573 #endif
3574
3575                 protected virtual void OnBeforeLabelEdit (LabelEditEventArgs e)
3576                 {
3577                         LabelEditEventHandler eh = (LabelEditEventHandler)(Events [BeforeLabelEditEvent]);
3578                         if (eh != null)
3579                                 eh (this, e);
3580                 }
3581
3582                 protected internal virtual void OnColumnClick (ColumnClickEventArgs e)
3583                 {
3584                         ColumnClickEventHandler eh = (ColumnClickEventHandler)(Events [ColumnClickEvent]);
3585                         if (eh != null)
3586                                 eh (this, e);
3587                 }
3588
3589 #if NET_2_0
3590                 protected internal virtual void OnDrawColumnHeader(DrawListViewColumnHeaderEventArgs e)
3591                 {
3592                         DrawListViewColumnHeaderEventHandler eh = (DrawListViewColumnHeaderEventHandler)(Events[DrawColumnHeaderEvent]);
3593                         if (eh != null)
3594                                 eh(this, e);
3595                 }
3596
3597                 protected internal virtual void OnDrawItem(DrawListViewItemEventArgs e)
3598                 {
3599                         DrawListViewItemEventHandler eh = (DrawListViewItemEventHandler)(Events[DrawItemEvent]);
3600                         if (eh != null)
3601                                 eh(this, e);
3602                 }
3603
3604                 protected internal virtual void OnDrawSubItem(DrawListViewSubItemEventArgs e)
3605                 {
3606                         DrawListViewSubItemEventHandler eh = (DrawListViewSubItemEventHandler)(Events[DrawSubItemEvent]);
3607                         if (eh != null)
3608                                 eh(this, e);
3609                 }
3610
3611 #else
3612                 protected override void OnEnabledChanged (EventArgs e)
3613                 {
3614                         base.OnEnabledChanged (e);
3615                 }
3616 #endif
3617
3618                 protected override void OnFontChanged (EventArgs e)
3619                 {
3620                         base.OnFontChanged (e);
3621                         Redraw (true);
3622                 }
3623
3624                 protected override void OnHandleCreated (EventArgs e)
3625                 {
3626                         base.OnHandleCreated (e);
3627                         CalculateListView (alignment);
3628 #if NET_2_0
3629                         if (!virtual_mode) // Sorting is not allowed in virtual mode
3630 #endif
3631                                 Sort ();
3632                 }
3633
3634                 protected override void OnHandleDestroyed (EventArgs e)
3635                 {
3636                         base.OnHandleDestroyed (e);
3637                 }
3638
3639                 protected virtual void OnItemActivate (EventArgs e)
3640                 {
3641                         EventHandler eh = (EventHandler)(Events [ItemActivateEvent]);
3642                         if (eh != null)
3643                                 eh (this, e);
3644                 }
3645
3646                 protected internal virtual void OnItemCheck (ItemCheckEventArgs ice)
3647                 {
3648                         ItemCheckEventHandler eh = (ItemCheckEventHandler)(Events [ItemCheckEvent]);
3649                         if (eh != null)
3650                                 eh (this, ice);
3651                 }
3652
3653 #if NET_2_0
3654                 protected internal virtual void OnItemChecked (ItemCheckedEventArgs e)
3655                 {
3656                         ItemCheckedEventHandler eh = (ItemCheckedEventHandler)(Events [ItemCheckedEvent]);
3657                         if (eh != null)
3658                                 eh (this, e);
3659                 }
3660 #endif
3661
3662                 protected virtual void OnItemDrag (ItemDragEventArgs e)
3663                 {
3664                         ItemDragEventHandler eh = (ItemDragEventHandler)(Events [ItemDragEvent]);
3665                         if (eh != null)
3666                                 eh (this, e);
3667                 }
3668
3669 #if NET_2_0
3670                 protected virtual void OnItemMouseHover (ListViewItemMouseHoverEventArgs e)
3671                 {
3672                         ListViewItemMouseHoverEventHandler eh = (ListViewItemMouseHoverEventHandler)(Events [ItemMouseHoverEvent]);
3673                         if (eh != null)
3674                                 eh (this, e);
3675                 }
3676
3677                 protected internal virtual void OnItemSelectionChanged (ListViewItemSelectionChangedEventArgs e)
3678                 {
3679                         ListViewItemSelectionChangedEventHandler eh =
3680                                 (ListViewItemSelectionChangedEventHandler) Events [ItemSelectionChangedEvent];
3681                         if (eh != null)
3682                                 eh (this, e);
3683                 }
3684
3685                 protected override void OnMouseHover (EventArgs e)
3686                 {
3687                         base.OnMouseHover (e);
3688                 }
3689
3690                 protected override void OnParentChanged (EventArgs e)
3691                 {
3692                         base.OnParentChanged (e);
3693                 }
3694 #endif
3695
3696                 protected virtual void OnSelectedIndexChanged (EventArgs e)
3697                 {
3698                         EventHandler eh = (EventHandler)(Events [SelectedIndexChangedEvent]);
3699                         if (eh != null)
3700                                 eh (this, e);
3701                 }
3702
3703                 protected override void OnSystemColorsChanged (EventArgs e)
3704                 {
3705                         base.OnSystemColorsChanged (e);
3706                 }
3707
3708 #if NET_2_0
3709                 protected internal virtual void OnCacheVirtualItems (CacheVirtualItemsEventArgs e)
3710                 {
3711                         CacheVirtualItemsEventHandler eh = (CacheVirtualItemsEventHandler)Events [CacheVirtualItemsEvent];
3712                         if (eh != null)
3713                                 eh (this, e);
3714                 }
3715
3716                 protected virtual void OnRetrieveVirtualItem (RetrieveVirtualItemEventArgs e)
3717                 {
3718                         RetrieveVirtualItemEventHandler eh = (RetrieveVirtualItemEventHandler)Events [RetrieveVirtualItemEvent];
3719                         if (eh != null)
3720                                 eh (this, e);
3721                 }
3722
3723                 [EditorBrowsable (EditorBrowsableState.Advanced)]
3724                 protected virtual void OnRightToLeftLayoutChanged (EventArgs e)
3725                 {
3726                         EventHandler eh = (EventHandler)Events[RightToLeftLayoutChangedEvent];
3727                         if (eh != null)
3728                                 eh (this, e);
3729                 }
3730
3731                 protected virtual void OnSearchForVirtualItem (SearchForVirtualItemEventArgs e)
3732                 {
3733                         SearchForVirtualItemEventHandler eh = (SearchForVirtualItemEventHandler) Events [SearchForVirtualItemEvent];
3734                         if (eh != null)
3735                                 eh (this, e);
3736                 }
3737
3738                 protected virtual void OnVirtualItemsSelectionRangeChanged (ListViewVirtualItemsSelectionRangeChangedEventArgs e)
3739                 {
3740                         ListViewVirtualItemsSelectionRangeChangedEventHandler eh =
3741                                 (ListViewVirtualItemsSelectionRangeChangedEventHandler) Events [VirtualItemsSelectionRangeChangedEvent];
3742                         if (eh != null)
3743                                 eh (this, e);
3744                 }
3745 #endif
3746
3747                 protected void RealizeProperties ()
3748                 {
3749                         // FIXME: TODO
3750                 }
3751
3752                 protected void UpdateExtendedStyles ()
3753                 {
3754                         // FIXME: TODO
3755                 }
3756
3757                 bool refocusing = false;
3758
3759                 protected override void WndProc (ref Message m)
3760                 {
3761                         switch ((Msg)m.Msg) {
3762                         case Msg.WM_KILLFOCUS:
3763                                 Control receiver = Control.FromHandle (m.WParam);
3764                                 if (receiver == item_control) {
3765                                         has_focus = false;
3766                                         refocusing = true;
3767                                         return;
3768                                 }
3769                                 break;
3770                         case Msg.WM_SETFOCUS:
3771                                 if (refocusing) {
3772                                         has_focus = true;
3773                                         refocusing = false;
3774                                         return;
3775                                 }
3776                                 break;
3777                         default:
3778                                 break;
3779                         }
3780                         base.WndProc (ref m);
3781                 }
3782                 #endregion // Protected Methods
3783
3784                 #region Public Instance Methods
3785                 public void ArrangeIcons ()
3786                 {
3787                         ArrangeIcons (this.alignment);
3788                 }
3789
3790                 public void ArrangeIcons (ListViewAlignment value)
3791                 {
3792                         // Icons are arranged only if view is set to LargeIcon or SmallIcon
3793                         if (view == View.LargeIcon || view == View.SmallIcon)
3794                                 Redraw (true);
3795                 }
3796
3797 #if NET_2_0
3798                 public void AutoResizeColumn (int columnIndex, ColumnHeaderAutoResizeStyle headerAutoResize)
3799                 {
3800                         if (columnIndex < 0 || columnIndex >= columns.Count)
3801                                 throw new ArgumentOutOfRangeException ("columnIndex");
3802
3803                         columns [columnIndex].AutoResize (headerAutoResize);
3804                 }
3805
3806                 public void AutoResizeColumns (ColumnHeaderAutoResizeStyle headerAutoResize)
3807                 {
3808                         BeginUpdate ();
3809                         foreach (ColumnHeader col in columns)
3810                                 col.AutoResize (headerAutoResize);
3811                         EndUpdate ();
3812                 }
3813 #endif
3814
3815                 public void BeginUpdate ()
3816                 {
3817                         // flag to avoid painting
3818                         updating = true;
3819                 }
3820
3821                 public void Clear ()
3822                 {
3823                         columns.Clear ();
3824                         items.Clear (); // Redraw (true) called here
3825                 }
3826
3827                 public void EndUpdate ()
3828                 {
3829                         // flag to avoid painting
3830                         updating = false;
3831
3832                         // probably, now we need a redraw with recalculations
3833                         this.Redraw (true);
3834                 }
3835
3836                 public void EnsureVisible (int index)
3837                 {
3838                         if (index < 0 || index >= items.Count || scrollable == false || updating)
3839                                 return;
3840
3841                         Rectangle view_rect = item_control.ClientRectangle;
3842 #if NET_2_0
3843                         // Avoid direct access to items in virtual mode, and use item bounds otherwise, since we could have reordered items
3844                         Rectangle bounds = virtual_mode ? new Rectangle (GetItemLocation (index), ItemSize) : items [index].Bounds;
3845 #else
3846                         Rectangle bounds = items [index].Bounds;
3847 #endif
3848
3849                         if (view == View.Details && header_style != ColumnHeaderStyle.None) {
3850                                 view_rect.Y += header_control.Height;
3851                                 view_rect.Height -= header_control.Height;
3852                         }
3853
3854                         if (view_rect.Contains (bounds))
3855                                 return;
3856
3857                         if (View != View.Details) {
3858                                 if (bounds.Left < 0)
3859                                         h_scroll.Value += bounds.Left;
3860                                 else if (bounds.Right > view_rect.Right)
3861                                         h_scroll.Value += (bounds.Right - view_rect.Right);
3862                         }
3863
3864                         if (bounds.Top < view_rect.Y)
3865                                 v_scroll.Value += bounds.Top - view_rect.Y;
3866                         else if (bounds.Bottom > view_rect.Bottom)
3867                                 v_scroll.Value += (bounds.Bottom - view_rect.Bottom);
3868                 }
3869
3870 #if NET_2_0
3871                 public ListViewItem FindItemWithText (string text)
3872                 {
3873                         if (items.Count == 0)
3874                                 return null;
3875
3876                         return FindItemWithText (text, true, 0, true);
3877                 }
3878
3879                 public ListViewItem FindItemWithText (string text, bool includeSubItemsInSearch, int startIndex)
3880                 {
3881                         return FindItemWithText (text, includeSubItemsInSearch, startIndex, true, false);
3882                 }
3883
3884                 public ListViewItem FindItemWithText (string text, bool includeSubItemsInSearch, int startIndex, bool isPrefixSearch)
3885                 {
3886                         return FindItemWithText (text, includeSubItemsInSearch, startIndex, isPrefixSearch, false);
3887                 }
3888 #endif
3889
3890                 internal ListViewItem FindItemWithText (string text, bool includeSubItemsInSearch, int startIndex, bool isPrefixSearch, bool roundtrip)
3891                 {
3892                         if (startIndex < 0 || startIndex >= items.Count)
3893                                 throw new ArgumentOutOfRangeException ("startIndex");
3894
3895                         if (text == null)
3896                                 throw new ArgumentNullException ("text");
3897
3898 #if NET_2_0
3899                         if (virtual_mode) {
3900                                 SearchForVirtualItemEventArgs args = new SearchForVirtualItemEventArgs (true,
3901                                                 isPrefixSearch, includeSubItemsInSearch, text, Point.Empty,
3902                                                 SearchDirectionHint.Down, startIndex);
3903
3904                                 OnSearchForVirtualItem (args);
3905                                 int idx = args.Index;
3906                                 if (idx >= 0 && idx < virtual_list_size)
3907                                         return items [idx];
3908
3909                                 return null;
3910                         }
3911 #endif
3912
3913                         int i = startIndex;
3914                         while (true) {
3915                                 ListViewItem lvi = items [i];
3916
3917                                 if (isPrefixSearch) { // prefix search
3918                                         if (CultureInfo.CurrentCulture.CompareInfo.IsPrefix (lvi.Text, text, CompareOptions.IgnoreCase))
3919                                                 return lvi;
3920                                 } else if (String.Compare (lvi.Text, text, true) == 0) // match
3921                                         return lvi;
3922
3923                                 if (i + 1 >= items.Count) {
3924                                         if (!roundtrip)
3925                                                 break;
3926
3927                                         i = 0;
3928                                 } else
3929                                         i++;
3930
3931                                 if (i == startIndex)
3932                                         break;
3933                         }
3934
3935                         // Subitems have a minor priority, so we have to do a second linear search
3936                         // Also, we don't need to to a roundtrip search for them by now
3937                         if (includeSubItemsInSearch) {
3938                                 for (i = startIndex; i < items.Count; i++) {
3939                                         ListViewItem lvi = items [i];
3940                                         foreach (ListViewItem.ListViewSubItem sub_item in lvi.SubItems)
3941                                                 if (isPrefixSearch) {
3942                                                         if (CultureInfo.CurrentCulture.CompareInfo.IsPrefix (sub_item.Text,
3943                                                                 text, CompareOptions.IgnoreCase))
3944                                                                 return lvi;
3945                                                 } else if (String.Compare (sub_item.Text, text, true) == 0)
3946                                                         return lvi;
3947                                 }
3948                         }
3949
3950                         return null;
3951                 }
3952
3953 #if NET_2_0
3954                 public ListViewItem FindNearestItem (SearchDirectionHint searchDirection, int x, int y)
3955                 {
3956                         return FindNearestItem (searchDirection, new Point (x, y));
3957                 }
3958
3959                 public ListViewItem FindNearestItem (SearchDirectionHint dir, Point point)
3960                 {
3961                         if (dir < SearchDirectionHint.Left || dir > SearchDirectionHint.Down)
3962                                 throw new ArgumentOutOfRangeException ("searchDirection");
3963
3964                         if (view != View.LargeIcon && view != View.SmallIcon)
3965                                 throw new InvalidOperationException ();
3966
3967                         if (virtual_mode) {
3968                                 SearchForVirtualItemEventArgs args = new SearchForVirtualItemEventArgs (false,
3969                                                 false, false, String.Empty, point,
3970                                                 dir, 0);
3971
3972                                 OnSearchForVirtualItem (args);
3973                                 int idx = args.Index;
3974                                 if (idx >= 0 && idx < virtual_list_size)
3975                                         return items [idx];
3976
3977                                 return null;
3978                         }
3979
3980                         ListViewItem item = null;
3981                         int min_dist = Int32.MaxValue;
3982
3983                         //
3984                         // It looks like .Net does a previous adjustment
3985                         //
3986                         switch (dir) {
3987                                 case SearchDirectionHint.Up:
3988                                         point.Y -= item_size.Height;
3989                                         break;
3990                                 case SearchDirectionHint.Down:
3991                                         point.Y += item_size.Height;
3992                                         break;
3993                                 case SearchDirectionHint.Left:
3994                                         point.X -= item_size.Width;
3995                                         break;
3996                                 case SearchDirectionHint.Right:
3997                                         point.X += item_size.Width;
3998                                         break;
3999                         }
4000
4001                         for (int i = 0; i < items.Count; i++) {
4002                                 Point item_loc = GetItemLocation (i);
4003
4004                                 if (dir == SearchDirectionHint.Up) {
4005                                         if (point.Y < item_loc.Y)
4006                                                 continue;
4007                                 } else if (dir == SearchDirectionHint.Down) {
4008                                         if (point.Y > item_loc.Y)
4009                                                 continue;
4010                                 } else if (dir == SearchDirectionHint.Left) {
4011                                         if (point.X < item_loc.X)
4012                                                 continue;
4013                                 } else if (dir == SearchDirectionHint.Right) {
4014                                         if (point.X > item_loc.X)
4015                                                 continue;
4016                                 }
4017
4018                                 int x_dist = point.X - item_loc.X;
4019                                 int y_dist = point.Y - item_loc.Y;
4020
4021                                 int dist = x_dist * x_dist  + y_dist * y_dist;
4022                                 if (dist < min_dist) {
4023                                         item = items [i];
4024                                         min_dist = dist;
4025                                 }
4026                         }
4027
4028                         return item;
4029                 }
4030 #endif
4031
4032                 public ListViewItem GetItemAt (int x, int y)
4033                 {
4034                         Size item_size = ItemSize;
4035                         for (int i = 0; i < items.Count; i++) {
4036                                 Point item_location = GetItemLocation (i);
4037                                 Rectangle item_rect = new Rectangle (item_location, item_size);
4038                                 if (item_rect.Contains (x, y))
4039                                         return items [i];
4040                         }
4041
4042                         return null;
4043                 }
4044
4045                 public Rectangle GetItemRect (int index)
4046                 {
4047                         return GetItemRect (index, ItemBoundsPortion.Entire);
4048                 }
4049
4050                 public Rectangle GetItemRect (int index, ItemBoundsPortion portion)
4051                 {
4052                         if (index < 0 || index >= items.Count)
4053                                 throw new IndexOutOfRangeException ("index");
4054
4055                         return items [index].GetBounds (portion);
4056                 }
4057
4058 #if NET_2_0
4059                 public ListViewHitTestInfo HitTest (Point point)
4060                 {
4061                         return HitTest (point.X, point.Y);
4062                 }
4063
4064                 public ListViewHitTestInfo HitTest (int x, int y)
4065                 {
4066                         if (x < 0)
4067                                 throw new ArgumentOutOfRangeException ("x");
4068                         if (y < 0)
4069                                 throw new ArgumentOutOfRangeException ("y");
4070
4071                         ListViewItem item = GetItemAt (x, y);
4072                         if (item == null)
4073                                 return new ListViewHitTestInfo (null, null, ListViewHitTestLocations.None);
4074
4075                         ListViewHitTestLocations locations = 0;
4076                         if (item.GetBounds (ItemBoundsPortion.Label).Contains (x, y))
4077                                 locations |= ListViewHitTestLocations.Label;
4078                         else if (item.GetBounds (ItemBoundsPortion.Icon).Contains (x, y))
4079                                 locations |= ListViewHitTestLocations.Image;
4080                         else if (item.CheckRectReal.Contains (x, y))
4081                                 locations |= ListViewHitTestLocations.StateImage;
4082
4083                         ListViewItem.ListViewSubItem subitem = null;
4084                         if (view == View.Details)
4085                                 foreach (ListViewItem.ListViewSubItem si in item.SubItems)
4086                                         if (si.Bounds.Contains (x, y)) {
4087                                                 subitem = si;
4088                                                 break;
4089                                         }
4090
4091                         return new ListViewHitTestInfo (item, subitem, locations);
4092                 }
4093
4094                 [EditorBrowsable (EditorBrowsableState.Advanced)]
4095                 public void RedrawItems (int startIndex, int endIndex, bool invalidateOnly)
4096                 {
4097                         if (startIndex < 0 || startIndex >= items.Count)
4098                                 throw new ArgumentOutOfRangeException ("startIndex");
4099                         if (endIndex < 0 || endIndex >= items.Count)
4100                                 throw new ArgumentOutOfRangeException ("endIndex");
4101                         if (startIndex > endIndex)
4102                                 throw new ArgumentException ("startIndex");
4103
4104                         if (updating)
4105                                 return;
4106
4107                         for (int i = startIndex; i <= endIndex; i++)
4108                                 items [i].Invalidate ();
4109
4110                         if (!invalidateOnly)
4111                                 Update ();
4112                 }
4113 #endif
4114
4115                 public void Sort ()
4116                 {
4117 #if NET_2_0
4118                         if (virtual_mode)
4119                                 throw new InvalidOperationException ();
4120 #endif
4121
4122                         Sort (true);
4123                 }
4124
4125                 // we need this overload to reuse the logic for sorting, while allowing
4126                 // redrawing to be done by caller or have it done by this method when
4127                 // sorting is really performed
4128                 //
4129                 // ListViewItemCollection's Add and AddRange methods call this overload
4130                 // with redraw set to false, as they take care of redrawing themselves
4131                 // (they even want to redraw the listview if no sort is performed, as
4132                 // an item was added), while ListView.Sort () only wants to redraw if
4133                 // sorting was actually performed
4134                 private void Sort (bool redraw)
4135                 {
4136                         if (!IsHandleCreated || item_sorter == null) {
4137                                 return;
4138                         }
4139
4140                         items.Sort (item_sorter);
4141                         if (redraw)
4142                                 this.Redraw (true);
4143                 }
4144
4145                 public override string ToString ()
4146                 {
4147                         int count = this.Items.Count;
4148
4149                         if (count == 0)
4150                                 return string.Format ("System.Windows.Forms.ListView, Items.Count: 0");
4151                         else
4152                                 return string.Format ("System.Windows.Forms.ListView, Items.Count: {0}, Items[0]: {1}", count, this.Items [0].ToString ());
4153                 }
4154                 #endregion      // Public Instance Methods
4155
4156
4157                 #region Subclasses
4158
4159                 internal class HeaderControl : Control {
4160
4161                         ListView owner;
4162                         bool column_resize_active = false;
4163                         ColumnHeader resize_column;
4164                         ColumnHeader clicked_column;
4165                         ColumnHeader drag_column;
4166                         int drag_x;
4167                         int drag_to_index = -1;
4168                         ColumnHeader entered_column_header;
4169
4170                         public HeaderControl (ListView owner)
4171                         {
4172                                 this.owner = owner;
4173                                 this.SetStyle (ControlStyles.DoubleBuffer, true);
4174                                 MouseDown += new MouseEventHandler (HeaderMouseDown);
4175                                 MouseMove += new MouseEventHandler (HeaderMouseMove);
4176                                 MouseUp += new MouseEventHandler (HeaderMouseUp);
4177                                 MouseLeave += new EventHandler (OnMouseLeave);
4178                         }
4179
4180                         internal ColumnHeader EnteredColumnHeader {
4181                                 get { return entered_column_header; }
4182                                 private set {
4183                                         if (entered_column_header == value)
4184                                                 return;
4185                                         if (ThemeEngine.Current.ListViewHasHotHeaderStyle) {
4186                                                 Region region_to_invalidate = new Region ();
4187                                                 region_to_invalidate.MakeEmpty ();
4188                                                 if (entered_column_header != null)
4189                                                         region_to_invalidate.Union (GetColumnHeaderInvalidateArea (entered_column_header));
4190                                                 entered_column_header = value;
4191                                                 if (entered_column_header != null)
4192                                                         region_to_invalidate.Union (GetColumnHeaderInvalidateArea (entered_column_header));
4193                                                 Invalidate (region_to_invalidate);
4194                                                 region_to_invalidate.Dispose ();
4195                                         } else
4196                                                 entered_column_header = value;
4197                                 }
4198                         }
4199
4200                         void OnMouseLeave (object sender, EventArgs e)
4201                         {
4202                                 EnteredColumnHeader = null;
4203                         }
4204
4205                         private ColumnHeader ColumnAtX (int x)
4206                         {
4207                                 Point pt = new Point (x, 0);
4208                                 ColumnHeader result = null;
4209                                 foreach (ColumnHeader col in owner.Columns) {
4210                                         if (col.Rect.Contains (pt)) {
4211                                                 result = col;
4212                                                 break;
4213                                         }
4214                                 }
4215                                 return result;
4216                         }
4217
4218                         private int GetReorderedIndex (ColumnHeader col)
4219                         {
4220                                 if (owner.reordered_column_indices == null)
4221                                         return col.Index;
4222                                 else
4223                                         for (int i = 0; i < owner.Columns.Count; i++)
4224                                                 if (owner.reordered_column_indices [i] == col.Index)
4225                                                         return i;
4226                                 throw new Exception ("Column index missing from reordered array");
4227                         }
4228
4229                         private void HeaderMouseDown (object sender, MouseEventArgs me)
4230                         {
4231                                 if (resize_column != null) {
4232                                         column_resize_active = true;
4233                                         Capture = true;
4234                                         return;
4235                                 }
4236
4237                                 clicked_column = ColumnAtX (me.X + owner.h_marker);
4238
4239                                 if (clicked_column != null) {
4240                                         Capture = true;
4241                                         if (owner.AllowColumnReorder) {
4242                                                 drag_x = me.X;
4243                                                 drag_column = (ColumnHeader) (clicked_column as ICloneable).Clone ();
4244                                                 drag_column.Rect = clicked_column.Rect;
4245                                                 drag_to_index = GetReorderedIndex (clicked_column);
4246                                         }
4247                                         clicked_column.Pressed = true;
4248                                         Invalidate (clicked_column);
4249                                         return;
4250                                 }
4251                         }
4252
4253                         void Invalidate (ColumnHeader columnHeader)
4254                         {
4255                                 Invalidate (GetColumnHeaderInvalidateArea (columnHeader));
4256                         }
4257
4258                         Rectangle GetColumnHeaderInvalidateArea (ColumnHeader columnHeader)
4259                         {
4260                                 Rectangle bounds = columnHeader.Rect;
4261                                 bounds.X -= owner.h_marker;
4262                                 return bounds;
4263                         }
4264
4265                         void StopResize ()
4266                         {
4267                                 column_resize_active = false;
4268                                 resize_column = null;
4269                                 Capture = false;
4270                                 Cursor = Cursors.Default;
4271                         }
4272
4273                         private void HeaderMouseMove (object sender, MouseEventArgs me)
4274                         {
4275                                 Point pt = new Point (me.X + owner.h_marker, me.Y);
4276
4277                                 if (column_resize_active) {
4278                                         int width = pt.X - resize_column.X;
4279                                         if (width < 0)
4280                                                 width = 0;
4281
4282                                         if (!owner.CanProceedWithResize (resize_column, width)){
4283                                                 StopResize ();
4284                                                 return;
4285                                         }
4286                                         resize_column.Width = width;
4287                                         return;
4288                                 }
4289
4290                                 resize_column = null;
4291
4292                                 if (clicked_column != null) {
4293                                         if (owner.AllowColumnReorder) {
4294                                                 Rectangle r;
4295
4296                                                 r = drag_column.Rect;
4297                                                 r.X = clicked_column.Rect.X + me.X - drag_x;
4298                                                 drag_column.Rect = r;
4299
4300                                                 int x = me.X + owner.h_marker;
4301                                                 ColumnHeader over = ColumnAtX (x);
4302                                                 if (over == null)
4303                                                         drag_to_index = owner.Columns.Count;
4304                                                 else if (x < over.X + over.Width / 2)
4305                                                         drag_to_index = GetReorderedIndex (over);
4306                                                 else
4307                                                         drag_to_index = GetReorderedIndex (over) + 1;
4308                                                 Invalidate ();
4309                                         } else {
4310                                                 ColumnHeader over = ColumnAtX (me.X + owner.h_marker);
4311                                                 bool pressed = clicked_column.Pressed;
4312                                                 clicked_column.Pressed = over == clicked_column;
4313                                                 if (clicked_column.Pressed ^ pressed)
4314                                                         Invalidate (clicked_column);
4315                                         }
4316                                         return;
4317                                 }
4318
4319                                 for (int i = 0; i < owner.Columns.Count; i++) {
4320                                         Rectangle zone = owner.Columns [i].Rect;
4321                                         if (zone.Contains (pt))
4322                                                 EnteredColumnHeader = owner.Columns [i];
4323                                         zone.X = zone.Right - 5;
4324                                         zone.Width = 10;
4325                                         if (zone.Contains (pt)) {
4326                                                 if (i < owner.Columns.Count - 1 && owner.Columns [i + 1].Width == 0)
4327                                                         i++;
4328                                                 resize_column = owner.Columns [i];
4329                                                 break;
4330                                         }
4331                                 }
4332
4333                                 if (resize_column == null)
4334                                         Cursor = Cursors.Default;
4335                                 else
4336                                         Cursor = Cursors.VSplit;
4337                         }
4338
4339                         void HeaderMouseUp (object sender, MouseEventArgs me)
4340                         {
4341                                 Capture = false;
4342
4343                                 if (column_resize_active) {
4344                                         int column_idx = resize_column.Index;
4345                                         StopResize ();
4346                                         owner.RaiseColumnWidthChanged (column_idx);
4347                                         return;
4348                                 }
4349
4350                                 if (clicked_column != null && clicked_column.Pressed) {
4351                                         clicked_column.Pressed = false;
4352                                         Invalidate (clicked_column);
4353                                         owner.OnColumnClick (new ColumnClickEventArgs (clicked_column.Index));
4354                                 }
4355
4356                                 if (drag_column != null && owner.AllowColumnReorder) {
4357                                         drag_column = null;
4358                                         if (drag_to_index > GetReorderedIndex (clicked_column))
4359                                                 drag_to_index--;
4360                                         if (owner.GetReorderedColumn (drag_to_index) != clicked_column)
4361                                                 owner.ReorderColumn (clicked_column, drag_to_index, true);
4362                                         drag_to_index = -1;
4363                                         Invalidate ();
4364                                 }
4365
4366                                 clicked_column = null;
4367                         }
4368
4369                         internal override void OnPaintInternal (PaintEventArgs pe)
4370                         {
4371                                 if (owner.updating)
4372                                         return;
4373
4374                                 Theme theme = ThemeEngine.Current;
4375                                 theme.DrawListViewHeader (pe.Graphics, pe.ClipRectangle, this.owner);
4376
4377                                 if (drag_column == null)
4378                                         return;
4379
4380                                 int target_x;
4381                                 if (drag_to_index == owner.Columns.Count)
4382                                         target_x = owner.GetReorderedColumn (drag_to_index - 1).Rect.Right - owner.h_marker;
4383                                 else
4384                                         target_x = owner.GetReorderedColumn (drag_to_index).Rect.X - owner.h_marker;
4385                                 theme.DrawListViewHeaderDragDetails (pe.Graphics, owner, drag_column, target_x);
4386                         }
4387
4388                         protected override void WndProc (ref Message m)
4389                         {
4390                                 switch ((Msg)m.Msg) {
4391                                 case Msg.WM_SETFOCUS:
4392                                         owner.Focus ();
4393                                         break;
4394                                 default:
4395                                         base.WndProc (ref m);
4396                                         break;
4397                                 }
4398                         }
4399                 }
4400
4401                 private class ItemComparer : IComparer {
4402                         readonly SortOrder sort_order;
4403
4404                         public ItemComparer (SortOrder sortOrder)
4405                         {
4406                                 sort_order = sortOrder;
4407                         }
4408
4409                         public int Compare (object x, object y)
4410                         {
4411                                 ListViewItem item_x = x as ListViewItem;
4412                                 ListViewItem item_y = y as ListViewItem;
4413                                 if (sort_order == SortOrder.Ascending)
4414                                         return String.Compare (item_x.Text, item_y.Text);
4415                                 else
4416                                         return String.Compare (item_y.Text, item_x.Text);
4417                         }
4418                 }
4419
4420 #if NET_2_0
4421                 [ListBindable (false)]
4422 #endif
4423                 public class CheckedIndexCollection : IList, ICollection, IEnumerable
4424                 {
4425                         private readonly ListView owner;
4426
4427                         #region Public Constructor
4428                         public CheckedIndexCollection (ListView owner)
4429                         {
4430                                 this.owner = owner;
4431                         }
4432                         #endregion      // Public Constructor
4433
4434                         #region Public Properties
4435                         [Browsable (false)]
4436                         public int Count {
4437                                 get { return owner.CheckedItems.Count; }
4438                         }
4439
4440                         public bool IsReadOnly {
4441                                 get { return true; }
4442                         }
4443
4444                         public int this [int index] {
4445                                 get {
4446                                         int [] indices = GetIndices ();
4447                                         if (index < 0 || index >= indices.Length)
4448                                                 throw new ArgumentOutOfRangeException ("index");
4449                                         return indices [index];
4450                                 }
4451                         }
4452
4453                         bool ICollection.IsSynchronized {
4454                                 get { return false; }
4455                         }
4456
4457                         object ICollection.SyncRoot {
4458                                 get { return this; }
4459                         }
4460
4461                         bool IList.IsFixedSize {
4462                                 get { return true; }
4463                         }
4464
4465                         object IList.this [int index] {
4466                                 get { return this [index]; }
4467                                 set { throw new NotSupportedException ("SetItem operation is not supported."); }
4468                         }
4469                         #endregion      // Public Properties
4470
4471                         #region Public Methods
4472                         public bool Contains (int checkedIndex)
4473                         {
4474                                 int [] indices = GetIndices ();
4475                                 for (int i = 0; i < indices.Length; i++) {
4476                                         if (indices [i] == checkedIndex)
4477                                                 return true;
4478                                 }
4479                                 return false;
4480                         }
4481
4482                         public IEnumerator GetEnumerator ()
4483                         {
4484                                 int [] indices = GetIndices ();
4485                                 return indices.GetEnumerator ();
4486                         }
4487
4488                         void ICollection.CopyTo (Array dest, int index)
4489                         {
4490                                 int [] indices = GetIndices ();
4491                                 Array.Copy (indices, 0, dest, index, indices.Length);
4492                         }
4493
4494                         int IList.Add (object value)
4495                         {
4496                                 throw new NotSupportedException ("Add operation is not supported.");
4497                         }
4498
4499                         void IList.Clear ()
4500                         {
4501                                 throw new NotSupportedException ("Clear operation is not supported.");
4502                         }
4503
4504                         bool IList.Contains (object checkedIndex)
4505                         {
4506                                 if (!(checkedIndex is int))
4507                                         return false;
4508                                 return Contains ((int) checkedIndex);
4509                         }
4510
4511                         int IList.IndexOf (object checkedIndex)
4512                         {
4513                                 if (!(checkedIndex is int))
4514                                         return -1;
4515                                 return IndexOf ((int) checkedIndex);
4516                         }
4517
4518                         void IList.Insert (int index, object value)
4519                         {
4520                                 throw new NotSupportedException ("Insert operation is not supported.");
4521                         }
4522
4523                         void IList.Remove (object value)
4524                         {
4525                                 throw new NotSupportedException ("Remove operation is not supported.");
4526                         }
4527
4528                         void IList.RemoveAt (int index)
4529                         {
4530                                 throw new NotSupportedException ("RemoveAt operation is not supported.");
4531                         }
4532
4533                         public int IndexOf (int checkedIndex)
4534                         {
4535                                 int [] indices = GetIndices ();
4536                                 for (int i = 0; i < indices.Length; i++) {
4537                                         if (indices [i] == checkedIndex)
4538                                                 return i;
4539                                 }
4540                                 return -1;
4541                         }
4542                         #endregion      // Public Methods
4543
4544                         private int [] GetIndices ()
4545                         {
4546                                 ArrayList checked_items = owner.CheckedItems.List;
4547                                 int [] indices = new int [checked_items.Count];
4548                                 for (int i = 0; i < checked_items.Count; i++) {
4549                                         ListViewItem item = (ListViewItem) checked_items [i];
4550                                         indices [i] = item.Index;
4551                                 }
4552                                 return indices;
4553                         }
4554                 }       // CheckedIndexCollection
4555
4556 #if NET_2_0
4557                 [ListBindable (false)]
4558 #endif
4559                 public class CheckedListViewItemCollection : IList, ICollection, IEnumerable
4560                 {
4561                         private readonly ListView owner;
4562                         private ArrayList list;
4563
4564                         #region Public Constructor
4565                         public CheckedListViewItemCollection (ListView owner)
4566                         {
4567                                 this.owner = owner;
4568                                 this.owner.Items.Changed += new CollectionChangedHandler (
4569                                         ItemsCollection_Changed);
4570                         }
4571                         #endregion      // Public Constructor
4572
4573                         #region Public Properties
4574                         [Browsable (false)]
4575                         public int Count {
4576                                 get {
4577                                         if (!owner.CheckBoxes)
4578                                                 return 0;
4579                                         return List.Count;
4580                                 }
4581                         }
4582
4583                         public bool IsReadOnly {
4584                                 get { return true; }
4585                         }
4586
4587                         public ListViewItem this [int index] {
4588                                 get {
4589 #if NET_2_0
4590                                         if (owner.VirtualMode)
4591                                                 throw new InvalidOperationException ();
4592 #endif
4593                                         ArrayList checked_items = List;
4594                                         if (index < 0 || index >= checked_items.Count)
4595                                                 throw new ArgumentOutOfRangeException ("index");
4596                                         return (ListViewItem) checked_items [index];
4597                                 }
4598                         }
4599
4600 #if NET_2_0
4601                         public virtual ListViewItem this [string key] {
4602                                 get {
4603                                         int idx = IndexOfKey (key);
4604                                         return idx == -1 ? null : (ListViewItem) List [idx];
4605                                 }
4606                         }
4607 #endif
4608
4609                         bool ICollection.IsSynchronized {
4610                                 get { return false; }
4611                         }
4612
4613                         object ICollection.SyncRoot {
4614                                 get { return this; }
4615                         }
4616
4617                         bool IList.IsFixedSize {
4618                                 get { return true; }
4619                         }
4620
4621                         object IList.this [int index] {
4622                                 get { return this [index]; }
4623                                 set { throw new NotSupportedException ("SetItem operation is not supported."); }
4624                         }
4625                         #endregion      // Public Properties
4626
4627                         #region Public Methods
4628                         public bool Contains (ListViewItem item)
4629                         {
4630                                 if (!owner.CheckBoxes)
4631                                         return false;
4632                                 return List.Contains (item);
4633                         }
4634
4635 #if NET_2_0
4636                         public virtual bool ContainsKey (string key)
4637                         {
4638                                 return IndexOfKey (key) != -1;
4639                         }
4640 #endif
4641
4642                         public void CopyTo (Array dest, int index)
4643                         {
4644 #if NET_2_0
4645                                 if (owner.VirtualMode)
4646                                         throw new InvalidOperationException ();
4647 #endif
4648                                 if (!owner.CheckBoxes)
4649                                         return;
4650                                 List.CopyTo (dest, index);
4651                         }
4652
4653                         public IEnumerator GetEnumerator ()
4654                         {
4655 #if NET_2_0
4656                                 if (owner.VirtualMode)
4657                                         throw new InvalidOperationException ();
4658 #endif
4659                                 if (!owner.CheckBoxes)
4660                                         return (new ListViewItem [0]).GetEnumerator ();
4661                                 return List.GetEnumerator ();
4662                         }
4663
4664                         int IList.Add (object value)
4665                         {
4666                                 throw new NotSupportedException ("Add operation is not supported.");
4667                         }
4668
4669                         void IList.Clear ()
4670                         {
4671                                 throw new NotSupportedException ("Clear operation is not supported.");
4672                         }
4673
4674                         bool IList.Contains (object item)
4675                         {
4676                                 if (!(item is ListViewItem))
4677                                         return false;
4678                                 return Contains ((ListViewItem) item);
4679                         }
4680
4681                         int IList.IndexOf (object item)
4682                         {
4683                                 if (!(item is ListViewItem))
4684                                         return -1;
4685                                 return IndexOf ((ListViewItem) item);
4686                         }
4687
4688                         void IList.Insert (int index, object value)
4689                         {
4690                                 throw new NotSupportedException ("Insert operation is not supported.");
4691                         }
4692
4693                         void IList.Remove (object value)
4694                         {
4695                                 throw new NotSupportedException ("Remove operation is not supported.");
4696                         }
4697
4698                         void IList.RemoveAt (int index)
4699                         {
4700                                 throw new NotSupportedException ("RemoveAt operation is not supported.");
4701                         }
4702
4703                         public int IndexOf (ListViewItem item)
4704                         {
4705 #if NET_2_0
4706                                 if (owner.VirtualMode)
4707                                         throw new InvalidOperationException ();
4708 #endif
4709                                 if (!owner.CheckBoxes)
4710                                         return -1;
4711                                 return List.IndexOf (item);
4712                         }
4713
4714 #if NET_2_0
4715                         public virtual int IndexOfKey (string key)
4716                         {
4717 #if NET_2_0
4718                                 if (owner.VirtualMode)
4719                                         throw new InvalidOperationException ();
4720 #endif
4721                                 if (key == null || key.Length == 0)
4722                                         return -1;
4723
4724                                 ArrayList checked_items = List;
4725                                 for (int i = 0; i < checked_items.Count; i++) {
4726                                         ListViewItem item = (ListViewItem) checked_items [i];
4727                                         if (String.Compare (key, item.Name, true) == 0)
4728                                                 return i;
4729                                 }
4730
4731                                 return -1;
4732                         }
4733 #endif
4734                         #endregion      // Public Methods
4735
4736                         internal ArrayList List {
4737                                 get {
4738                                         if (list == null) {
4739                                                 list = new ArrayList ();
4740                                                 foreach (ListViewItem item in owner.Items) {
4741                                                         if (item.Checked)
4742                                                                 list.Add (item);
4743                                                 }
4744                                         }
4745                                         return list;
4746                                 }
4747                         }
4748
4749                         internal void Reset ()
4750                         {
4751                                 // force re-population of list
4752                                 list = null;
4753                         }
4754
4755                         private void ItemsCollection_Changed ()
4756                         {
4757                                 Reset ();
4758                         }
4759                 }       // CheckedListViewItemCollection
4760
4761 #if NET_2_0
4762                 [ListBindable (false)]
4763 #endif
4764                 public class ColumnHeaderCollection : IList, ICollection, IEnumerable
4765                 {
4766                         internal ArrayList list;
4767                         private ListView owner;
4768
4769                         #region UIA Framework Events
4770 #if NET_2_0
4771                         //NOTE:
4772                         //      We are using Reflection to add/remove internal events.
4773                         //      Class ListViewProvider uses the events when View is Details.
4774                         //
4775                         //Event used to generate UIA StructureChangedEvent
4776                         static object UIACollectionChangedEvent = new object ();
4777
4778                         internal event CollectionChangeEventHandler UIACollectionChanged {
4779                                 add {
4780                                         if (owner != null)
4781                                                 owner.Events.AddHandler (UIACollectionChangedEvent, value);
4782                                 }
4783                                 remove {
4784                                         if (owner != null)
4785                                                 owner.Events.RemoveHandler (UIACollectionChangedEvent, value);
4786                                 }
4787                         }
4788
4789                         internal void OnUIACollectionChangedEvent (CollectionChangeEventArgs args)
4790                         {
4791                                 if (owner == null)
4792                                         return;
4793
4794                                 CollectionChangeEventHandler eh
4795                                         = (CollectionChangeEventHandler) owner.Events [UIACollectionChangedEvent];
4796                                 if (eh != null)
4797                                         eh (owner, args);
4798                         }
4799
4800 #endif
4801                         #endregion UIA Framework Events
4802
4803                         #region Public Constructor
4804                         public ColumnHeaderCollection (ListView owner)
4805                         {
4806                                 list = new ArrayList ();
4807                                 this.owner = owner;
4808                         }
4809                         #endregion      // Public Constructor
4810
4811                         #region Public Properties
4812                         [Browsable (false)]
4813                         public int Count {
4814                                 get { return list.Count; }
4815                         }
4816
4817                         public bool IsReadOnly {
4818                                 get { return false; }
4819                         }
4820
4821                         public virtual ColumnHeader this [int index] {
4822                                 get {
4823                                         if (index < 0 || index >= list.Count)
4824                                                 throw new ArgumentOutOfRangeException ("index");
4825                                         return (ColumnHeader) list [index];
4826                                 }
4827                         }
4828
4829 #if NET_2_0
4830                         public virtual ColumnHeader this [string key] {
4831                                 get {
4832                                         int idx = IndexOfKey (key);
4833                                         if (idx == -1)
4834                                                 return null;
4835
4836                                         return (ColumnHeader) list [idx];
4837                                 }
4838                         }
4839 #endif
4840
4841                         bool ICollection.IsSynchronized {
4842                                 get { return true; }
4843                         }
4844
4845                         object ICollection.SyncRoot {
4846                                 get { return this; }
4847                         }
4848
4849                         bool IList.IsFixedSize {
4850                                 get { return list.IsFixedSize; }
4851                         }
4852
4853                         object IList.this [int index] {
4854                                 get { return this [index]; }
4855                                 set { throw new NotSupportedException ("SetItem operation is not supported."); }
4856                         }
4857                         #endregion      // Public Properties
4858
4859                         #region Public Methods
4860                         public virtual int Add (ColumnHeader value)
4861                         {
4862                                 int idx = list.Add (value);
4863                                 owner.AddColumn (value, idx, true);
4864
4865 #if NET_2_0
4866                                 //UIA Framework event: Item Added
4867                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Add, value));
4868 #endif
4869
4870                                 return idx;
4871                         }
4872
4873 #if NET_2_0
4874                         public virtual ColumnHeader Add (string text, int width, HorizontalAlignment textAlign)
4875                         {
4876                                 string str = text;
4877 #else
4878                         public virtual ColumnHeader Add (string str, int width, HorizontalAlignment textAlign)
4879                         {
4880 #endif
4881                                 ColumnHeader colHeader = new ColumnHeader (this.owner, str, textAlign, width);
4882                                 this.Add (colHeader);
4883                                 return colHeader;
4884                         }
4885
4886 #if NET_2_0
4887                         public virtual ColumnHeader Add (string text)
4888                         {
4889                                 return Add (String.Empty, text);
4890                         }
4891
4892                         public virtual ColumnHeader Add (string text, int width)
4893                         {
4894                                 return Add (String.Empty, text, width);
4895                         }
4896
4897                         public virtual ColumnHeader Add (string key, string text)
4898                         {
4899                                 ColumnHeader colHeader = new ColumnHeader ();
4900                                 colHeader.Name = key;
4901                                 colHeader.Text = text;
4902                                 Add (colHeader);
4903                                 return colHeader;
4904                         }
4905
4906                         public virtual ColumnHeader Add (string key, string text, int width)
4907                         {
4908                                 return Add (key, text, width, HorizontalAlignment.Left, -1);
4909                         }
4910
4911                         public virtual ColumnHeader Add (string key, string text, int width, HorizontalAlignment textAlign, int imageIndex)
4912                         {
4913                                 ColumnHeader colHeader = new ColumnHeader (key, text, width, textAlign);
4914                                 colHeader.ImageIndex = imageIndex;
4915                                 Add (colHeader);
4916                                 return colHeader;
4917                         }
4918
4919                         public virtual ColumnHeader Add (string key, string text, int width, HorizontalAlignment textAlign, string imageKey)
4920                         {
4921                                 ColumnHeader colHeader = new ColumnHeader (key, text, width, textAlign);
4922                                 colHeader.ImageKey = imageKey;
4923                                 Add (colHeader);
4924                                 return colHeader;
4925                         }
4926 #endif
4927
4928                         public virtual void AddRange (ColumnHeader [] values)
4929                         {
4930                                 foreach (ColumnHeader colHeader in values) {
4931                                         int idx = list.Add (colHeader);
4932                                         owner.AddColumn (colHeader, idx, false);
4933                                 }
4934
4935                                 owner.Redraw (true);
4936                         }
4937
4938                         public virtual void Clear ()
4939                         {
4940                                 foreach (ColumnHeader col in list)
4941                                         col.SetListView (null);
4942                                 list.Clear ();
4943                                 owner.ReorderColumns (new int [0], true);
4944
4945 #if NET_2_0
4946                                 //UIA Framework event: Items cleared
4947                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Refresh, null));
4948 #endif
4949
4950                         }
4951
4952                         public bool Contains (ColumnHeader value)
4953                         {
4954                                 return list.Contains (value);
4955                         }
4956
4957 #if NET_2_0
4958                         public virtual bool ContainsKey (string key)
4959                         {
4960                                 return IndexOfKey (key) != -1;
4961                         }
4962 #endif
4963
4964                         public IEnumerator GetEnumerator ()
4965                         {
4966                                 return list.GetEnumerator ();
4967                         }
4968
4969                         void ICollection.CopyTo (Array dest, int index)
4970                         {
4971                                 list.CopyTo (dest, index);
4972                         }
4973
4974                         int IList.Add (object value)
4975                         {
4976                                 if (! (value is ColumnHeader)) {
4977                                         throw new ArgumentException ("Not of type ColumnHeader", "value");
4978                                 }
4979
4980                                 return this.Add ((ColumnHeader) value);
4981                         }
4982
4983                         bool IList.Contains (object value)
4984                         {
4985                                 if (! (value is ColumnHeader)) {
4986                                         throw new ArgumentException ("Not of type ColumnHeader", "value");
4987                                 }
4988
4989                                 return this.Contains ((ColumnHeader) value);
4990                         }
4991
4992                         int IList.IndexOf (object value)
4993                         {
4994                                 if (! (value is ColumnHeader)) {
4995                                         throw new ArgumentException ("Not of type ColumnHeader", "value");
4996                                 }
4997
4998                                 return this.IndexOf ((ColumnHeader) value);
4999                         }
5000
5001                         void IList.Insert (int index, object value)
5002                         {
5003                                 if (! (value is ColumnHeader)) {
5004                                         throw new ArgumentException ("Not of type ColumnHeader", "value");
5005                                 }
5006
5007                                 this.Insert (index, (ColumnHeader) value);
5008                         }
5009
5010                         void IList.Remove (object value)
5011                         {
5012                                 if (! (value is ColumnHeader)) {
5013                                         throw new ArgumentException ("Not of type ColumnHeader", "value");
5014                                 }
5015
5016                                 this.Remove ((ColumnHeader) value);
5017                         }
5018
5019                         public int IndexOf (ColumnHeader value)
5020                         {
5021                                 return list.IndexOf (value);
5022                         }
5023
5024 #if NET_2_0
5025                         public virtual int IndexOfKey (string key)
5026                         {
5027                                 if (key == null || key.Length == 0)
5028                                         return -1;
5029
5030                                 for (int i = 0; i < list.Count; i++) {
5031                                         ColumnHeader col = (ColumnHeader) list [i];
5032                                         if (String.Compare (key, col.Name, true) == 0)
5033                                                 return i;
5034                                 }
5035
5036                                 return -1;
5037                         }
5038 #endif
5039
5040                         public void Insert (int index, ColumnHeader value)
5041                         {
5042                                 // LAMESPEC: MSDOCS say greater than or equal to the value of the Count property
5043                                 // but it's really only greater.
5044                                 if (index < 0 || index > list.Count)
5045                                         throw new ArgumentOutOfRangeException ("index");
5046
5047                                 list.Insert (index, value);
5048                                 owner.AddColumn (value, index, true);
5049
5050 #if NET_2_0
5051                                 //UIA Framework event: Item added
5052                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Add, value));
5053 #endif
5054                         }
5055
5056 #if NET_2_0
5057                         public void Insert (int index, string text)
5058                         {
5059                                 Insert (index, String.Empty, text);
5060                         }
5061
5062                         public void Insert (int index, string text, int width)
5063                         {
5064                                 Insert (index, String.Empty, text, width);
5065                         }
5066
5067                         public void Insert (int index, string key, string text)
5068                         {
5069                                 ColumnHeader colHeader = new ColumnHeader ();
5070                                 colHeader.Name = key;
5071                                 colHeader.Text = text;
5072                                 Insert (index, colHeader);
5073                         }
5074
5075                         public void Insert (int index, string key, string text, int width)
5076                         {
5077                                 ColumnHeader colHeader = new ColumnHeader (key, text, width, HorizontalAlignment.Left);
5078                                 Insert (index, colHeader);
5079                         }
5080
5081                         public void Insert (int index, string key, string text, int width, HorizontalAlignment textAlign, int imageIndex)
5082                         {
5083                                 ColumnHeader colHeader = new ColumnHeader (key, text, width, textAlign);
5084                                 colHeader.ImageIndex = imageIndex;
5085                                 Insert (index, colHeader);
5086                         }
5087
5088                         public void Insert (int index, string key, string text, int width, HorizontalAlignment textAlign, string imageKey)
5089                         {
5090                                 ColumnHeader colHeader = new ColumnHeader (key, text, width, textAlign);
5091                                 colHeader.ImageKey = imageKey;
5092                                 Insert (index, colHeader);
5093                         }
5094 #endif
5095
5096 #if NET_2_0
5097                         public void Insert (int index, string text, int width, HorizontalAlignment textAlign)
5098                         {
5099                                 string str = text;
5100 #else
5101                         public void Insert (int index, string str, int width, HorizontalAlignment textAlign)
5102                         {
5103 #endif
5104                                 ColumnHeader colHeader = new ColumnHeader (this.owner, str, textAlign, width);
5105                                 this.Insert (index, colHeader);
5106                         }
5107
5108                         public virtual void Remove (ColumnHeader column)
5109                         {
5110                                 if (!Contains (column))
5111                                         return;
5112
5113                                 list.Remove (column);
5114                                 column.SetListView (null);
5115
5116                                 int rem_display_index = column.InternalDisplayIndex;
5117                                 int [] display_indices = new int [list.Count];
5118                                 for (int i = 0; i < display_indices.Length; i++) {
5119                                         ColumnHeader col = (ColumnHeader) list [i];
5120                                         int display_index = col.InternalDisplayIndex;
5121                                         if (display_index < rem_display_index) {
5122                                                 display_indices [i] = display_index;
5123                                         } else {
5124                                                 display_indices [i] = (display_index - 1);
5125                                         }
5126                                 }
5127
5128                                 column.InternalDisplayIndex = -1;
5129                                 owner.ReorderColumns (display_indices, true);
5130
5131 #if NET_2_0
5132                                 //UIA Framework event: Item Removed
5133                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Remove, column));
5134 #endif
5135                         }
5136
5137 #if NET_2_0
5138                         public virtual void RemoveByKey (string key)
5139                         {
5140                                 int idx = IndexOfKey (key);
5141                                 if (idx != -1)
5142                                         RemoveAt (idx);
5143                         }
5144 #endif
5145
5146                         public virtual void RemoveAt (int index)
5147                         {
5148                                 if (index < 0 || index >= list.Count)
5149                                         throw new ArgumentOutOfRangeException ("index");
5150
5151                                 ColumnHeader col = (ColumnHeader) list [index];
5152                                 Remove (col);
5153                         }
5154                         #endregion      // Public Methods
5155
5156
5157                 }       // ColumnHeaderCollection
5158
5159 #if NET_2_0
5160                 [ListBindable (false)]
5161 #endif
5162                 public class ListViewItemCollection : IList, ICollection, IEnumerable
5163                 {
5164                         private readonly ArrayList list;
5165                         private ListView owner;
5166 #if NET_2_0
5167                         private ListViewGroup group;
5168 #endif
5169
5170                         #region UIA Framework Events
5171 #if NET_2_0
5172                         //NOTE:
5173                         //      We are using Reflection to add/remove internal events.
5174                         //      Class ListViewProvider uses the events.
5175                         //
5176                         //Event used to generate UIA StructureChangedEvent
5177                         static object UIACollectionChangedEvent = new object ();
5178
5179                         internal event CollectionChangeEventHandler UIACollectionChanged {
5180                                 add {
5181                                         if (owner != null)
5182                                                 owner.Events.AddHandler (UIACollectionChangedEvent, value);
5183                                 }
5184                                 remove {
5185                                         if (owner != null)
5186                                                 owner.Events.RemoveHandler (UIACollectionChangedEvent, value);
5187                                 }
5188                         }
5189
5190                         internal void OnUIACollectionChangedEvent (CollectionChangeEventArgs args)
5191                         {
5192                                 if (owner == null)
5193                                         return;
5194
5195                                 CollectionChangeEventHandler eh
5196                                         = (CollectionChangeEventHandler) owner.Events [UIACollectionChangedEvent];
5197                                 if (eh != null)
5198                                         eh (owner, args);
5199                         }
5200
5201 #endif
5202                         #endregion UIA Framework Events
5203
5204                         // The collection can belong to a ListView (main) or to a ListViewGroup (sub-collection)
5205                         // In the later case ListViewItem.ListView never gets modified
5206                         private bool is_main_collection = true;
5207
5208                         #region Public Constructor
5209                         public ListViewItemCollection (ListView owner)
5210                         {
5211                                 list = new ArrayList (0);
5212                                 this.owner = owner;
5213                         }
5214                         #endregion      // Public Constructor
5215
5216 #if NET_2_0
5217                         internal ListViewItemCollection (ListView owner, ListViewGroup group) : this (owner)
5218                         {
5219                                 this.group = group;
5220                                 is_main_collection = false;
5221                         }
5222 #endif
5223
5224                         #region Public Properties
5225                         [Browsable (false)]
5226                         public int Count {
5227                                 get {
5228 #if NET_2_0
5229                                         if (owner != null && owner.VirtualMode)
5230                                                 return owner.VirtualListSize;
5231 #endif
5232
5233                                         return list.Count;
5234                                 }
5235                         }
5236
5237                         public bool IsReadOnly {
5238                                 get { return false; }
5239                         }
5240
5241 #if NET_2_0
5242                         public virtual ListViewItem this [int index] {
5243 #else
5244                         public virtual ListViewItem this [int displayIndex] {
5245 #endif
5246                                 get {
5247 #if !NET_2_0
5248                                         int index = displayIndex;
5249 #endif
5250
5251                                         if (index < 0 || index >= Count)
5252                                                 throw new ArgumentOutOfRangeException ("index");
5253
5254 #if NET_2_0
5255                                         if (owner != null && owner.VirtualMode)
5256                                                 return RetrieveVirtualItemFromOwner (index);
5257 #endif
5258                                         return (ListViewItem) list [index];
5259                                 }
5260
5261                                 set {
5262 #if !NET_2_0
5263                                         int index = displayIndex;
5264 #endif
5265
5266                                         if (index < 0 || index >= Count)
5267                                                 throw new ArgumentOutOfRangeException ("index");
5268
5269 #if NET_2_0
5270                                         if (owner != null && owner.VirtualMode)
5271                                                 throw new InvalidOperationException ();
5272 #endif
5273
5274                                         if (list.Contains (value))
5275                                                 throw new ArgumentException ("An item cannot be added more than once. To add an item again, you need to clone it.", "value");
5276
5277                                         if (value.ListView != null && value.ListView != owner)
5278                                                 throw new ArgumentException ("Cannot add or insert the item '" + value.Text + "' in more than one place. You must first remove it from its current location or clone it.", "value");
5279
5280                                         if (is_main_collection)
5281                                                 value.Owner = owner;
5282 #if NET_2_0
5283                                         else {
5284                                                 if (value.Group != null)
5285                                                         value.Group.Items.Remove (value);
5286
5287                                                 value.SetGroup (group);
5288                                         }
5289 #endif
5290
5291 #if NET_2_0
5292                                         //UIA Framework event: Item Replaced
5293                                         OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Remove, list [index]));
5294 #endif
5295
5296                                         list [index] = value;
5297
5298                                         CollectionChanged (true);
5299
5300 #if NET_2_0
5301                                         //UIA Framework event: Item Replaced
5302                                         OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Add, value));
5303 #endif
5304
5305                                 }
5306                         }
5307
5308 #if NET_2_0
5309                         public virtual ListViewItem this [string key] {
5310                                 get {
5311                                         int idx = IndexOfKey (key);
5312                                         if (idx == -1)
5313                                                 return null;
5314
5315                                         return this [idx];
5316                                 }
5317                         }
5318 #endif
5319
5320                         bool ICollection.IsSynchronized {
5321                                 get { return true; }
5322                         }
5323
5324                         object ICollection.SyncRoot {
5325                                 get { return this; }
5326                         }
5327
5328                         bool IList.IsFixedSize {
5329                                 get { return list.IsFixedSize; }
5330                         }
5331
5332                         object IList.this [int index] {
5333                                 get { return this [index]; }
5334                                 set {
5335 #if NET_2_0
5336                                         //UIA Framework event: Item Replaced
5337                                         OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Remove, this [index]));
5338 #endif
5339
5340                                         if (value is ListViewItem)
5341                                                 this [index] = (ListViewItem) value;
5342                                         else
5343                                                 this [index] = new ListViewItem (value.ToString ());
5344
5345                                         OnChange ();
5346 #if NET_2_0
5347                                         //UIA Framework event: Item Replaced
5348                                         OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Add, value));
5349 #endif
5350                                 }
5351                         }
5352                         #endregion      // Public Properties
5353
5354                         #region Public Methods
5355                         public virtual ListViewItem Add (ListViewItem value)
5356                         {
5357 #if NET_2_0
5358                                 if (owner != null && owner.VirtualMode)
5359                                         throw new InvalidOperationException ();
5360 #endif
5361
5362                                 AddItem (value);
5363
5364                                 // Item is ignored until it has been added to the ListView
5365                                 if (is_main_collection || value.ListView != null)
5366                                         CollectionChanged (true);
5367
5368 #if NET_2_0
5369                                 //UIA Framework event: Item Added
5370                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Add, value));
5371 #endif
5372
5373                                 return value;
5374                         }
5375
5376                         public virtual ListViewItem Add (string text)
5377                         {
5378                                 ListViewItem item = new ListViewItem (text);
5379                                 return this.Add (item);
5380                         }
5381
5382                         public virtual ListViewItem Add (string text, int imageIndex)
5383                         {
5384                                 ListViewItem item = new ListViewItem (text, imageIndex);
5385                                 return this.Add (item);
5386                         }
5387
5388 #if NET_2_0
5389                         public virtual ListViewItem Add (string text, string imageKey)
5390                         {
5391                                 ListViewItem item = new ListViewItem (text, imageKey);
5392                                 return this.Add (item);
5393                         }
5394
5395                         public virtual ListViewItem Add (string key, string text, int imageIndex)
5396                         {
5397                                 ListViewItem item = new ListViewItem (text, imageIndex);
5398                                 item.Name = key;
5399                                 return this.Add (item);
5400                         }
5401
5402                         public virtual ListViewItem Add (string key, string text, string imageKey)
5403                         {
5404                                 ListViewItem item = new ListViewItem (text, imageKey);
5405                                 item.Name = key;
5406                                 return this.Add (item);
5407                         }
5408 #endif
5409
5410 #if NET_2_0
5411                         public void AddRange (ListViewItem [] items)
5412                         {
5413 #else
5414                         public void AddRange (ListViewItem [] values)
5415                         {
5416                                 ListViewItem [] items = values;
5417 #endif
5418                                 if (items == null)
5419                                         throw new ArgumentNullException ("Argument cannot be null!", "items");
5420 #if NET_2_0
5421                                 if (owner != null && owner.VirtualMode)
5422                                         throw new InvalidOperationException ();
5423 #endif
5424
5425                                 owner.BeginUpdate ();
5426
5427                                 foreach (ListViewItem item in items) {
5428                                         AddItem (item);
5429
5430 #if NET_2_0
5431                                         //UIA Framework event: Item Added
5432                                         OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Add, item));
5433 #endif
5434                                 }
5435
5436                                 owner.EndUpdate ();
5437
5438                                 CollectionChanged (true);
5439                         }
5440
5441 #if NET_2_0
5442                         public void AddRange (ListViewItemCollection items)
5443                         {
5444                                 if (items == null)
5445                                         throw new ArgumentNullException ("Argument cannot be null!", "items");
5446
5447                                 ListViewItem[] itemArray = new ListViewItem[items.Count];
5448                                 items.CopyTo (itemArray,0);
5449                                 this.AddRange (itemArray);
5450                         }
5451 #endif
5452
5453                         public virtual void Clear ()
5454                         {
5455 #if NET_2_0
5456                                 if (owner != null && owner.VirtualMode)
5457                                         throw new InvalidOperationException ();
5458 #endif
5459                                 if (is_main_collection && owner != null) {
5460                                         owner.SetFocusedItem (-1);
5461                                         owner.h_scroll.Value = owner.v_scroll.Value = 0;
5462
5463 #if NET_2_0
5464                                         // first remove any item in the groups that *are* part of this LV too
5465                                         foreach (ListViewGroup group in owner.groups)
5466                                                 group.Items.ClearItemsWithSameListView ();
5467 #endif
5468
5469                                         foreach (ListViewItem item in list) {
5470                                                 owner.item_control.CancelEdit (item);
5471                                                 item.Owner = null;
5472                                         }
5473                                 }
5474 #if NET_2_0
5475                                 else
5476                                         foreach (ListViewItem item in list)
5477                                                 item.SetGroup (null);
5478 #endif
5479
5480                                 list.Clear ();
5481                                 CollectionChanged (false);
5482
5483 #if NET_2_0
5484                                 //UIA Framework event: Items Removed
5485                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Refresh, null));
5486 #endif
5487
5488                         }
5489
5490 #if NET_2_0
5491                         // This method is intended to be used from ListViewGroup.Items, not from ListView.Items,
5492                         // added for performance reasons (avoid calling manually Remove for every item on ListViewGroup.Items)
5493                         void ClearItemsWithSameListView ()
5494                         {
5495                                 if (is_main_collection)
5496                                         return;
5497
5498                                 int counter = list.Count - 1;
5499                                 while (counter >= 0) {
5500                                         ListViewItem item = list [counter] as ListViewItem;
5501
5502                                         // remove only if the items in group have being added to the ListView too
5503                                         if (item.ListView == group.ListView) {
5504                                                 list.RemoveAt (counter);
5505                                                 item.SetGroup (null);
5506                                         }
5507
5508                                         counter--;
5509                                 }
5510                         }
5511 #endif
5512
5513                         public bool Contains (ListViewItem item)
5514                         {
5515                                 return IndexOf (item) != -1;
5516                         }
5517
5518 #if NET_2_0
5519                         public virtual bool ContainsKey (string key)
5520                         {
5521                                 return IndexOfKey (key) != -1;
5522                         }
5523 #endif
5524
5525                         public void CopyTo (Array dest, int index)
5526                         {
5527                                 list.CopyTo (dest, index);
5528                         }
5529
5530 #if NET_2_0
5531                         public ListViewItem [] Find (string key, bool searchAllSubItems)
5532                         {
5533                                 if (key == null)
5534                                         return new ListViewItem [0];
5535
5536                                 List<ListViewItem> temp_list = new List<ListViewItem> ();
5537
5538                                 for (int i = 0; i < list.Count; i++) {
5539                                         ListViewItem lvi = (ListViewItem) list [i];
5540                                         if (String.Compare (key, lvi.Name, true) == 0)
5541                                                 temp_list.Add (lvi);
5542                                 }
5543
5544                                 ListViewItem [] retval = new ListViewItem [temp_list.Count];
5545                                 temp_list.CopyTo (retval);
5546
5547                                 return retval;
5548                         }
5549 #endif
5550
5551                         public IEnumerator GetEnumerator ()
5552                         {
5553 #if NET_2_0
5554                                 if (owner != null && owner.VirtualMode)
5555                                         throw new InvalidOperationException ();
5556 #endif
5557
5558                                 // This enumerator makes a copy of the collection so
5559                                 // it can be deleted from in a foreach
5560                                 return new Control.ControlCollection.ControlCollectionEnumerator (list);
5561                         }
5562
5563                         int IList.Add (object item)
5564                         {
5565                                 int result;
5566                                 ListViewItem li;
5567
5568 #if NET_2_0
5569                                 if (owner != null && owner.VirtualMode)
5570                                         throw new InvalidOperationException ();
5571 #endif
5572
5573                                 if (item is ListViewItem) {
5574                                         li = (ListViewItem) item;
5575                                         if (list.Contains (li))
5576                                                 throw new ArgumentException ("An item cannot be added more than once. To add an item again, you need to clone it.", "item");
5577
5578                                         if (li.ListView != null && li.ListView != owner)
5579                                                 throw new ArgumentException ("Cannot add or insert the item '" + li.Text + "' in more than one place. You must first remove it from its current location or clone it.", "item");
5580                                 }
5581                                 else
5582                                         li = new ListViewItem (item.ToString ());
5583
5584                                 li.Owner = owner;
5585
5586
5587                                 result = list.Add (li);
5588                                 CollectionChanged (true);
5589
5590 #if NET_2_0
5591                                 //UIA Framework event: Item Added
5592                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Add, li));
5593 #endif
5594
5595                                 return result;
5596                         }
5597
5598                         bool IList.Contains (object item)
5599                         {
5600                                 return Contains ((ListViewItem) item);
5601                         }
5602
5603                         int IList.IndexOf (object item)
5604                         {
5605                                 return IndexOf ((ListViewItem) item);
5606                         }
5607
5608                         void IList.Insert (int index, object item)
5609                         {
5610                                 if (item is ListViewItem)
5611                                         this.Insert (index, (ListViewItem) item);
5612                                 else
5613                                         this.Insert (index, item.ToString ());
5614
5615 #if NET_2_0
5616                                 //UIA Framework event: Item Added
5617                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Add, this [index]));
5618 #endif
5619                         }
5620
5621                         void IList.Remove (object item)
5622                         {
5623                                 Remove ((ListViewItem) item);
5624                         }
5625
5626                         public int IndexOf (ListViewItem item)
5627                         {
5628 #if NET_2_0
5629                                 if (owner != null && owner.VirtualMode) {
5630                                         for (int i = 0; i < Count; i++)
5631                                                 if (RetrieveVirtualItemFromOwner (i) == item)
5632                                                         return i;
5633
5634                                         return -1;
5635                                 }
5636 #endif
5637
5638                                 return list.IndexOf (item);
5639                         }
5640
5641 #if NET_2_0
5642                         public virtual int IndexOfKey (string key)
5643                         {
5644                                 if (key == null || key.Length == 0)
5645                                         return -1;
5646
5647                                 for (int i = 0; i < Count; i++) {
5648                                         ListViewItem lvi = this [i];
5649                                         if (String.Compare (key, lvi.Name, true) == 0)
5650                                                 return i;
5651                                 }
5652
5653                                 return -1;
5654                         }
5655 #endif
5656
5657                         public ListViewItem Insert (int index, ListViewItem item)
5658                         {
5659                                 if (index < 0 || index > list.Count)
5660                                         throw new ArgumentOutOfRangeException ("index");
5661
5662 #if NET_2_0
5663                                 if (owner != null && owner.VirtualMode)
5664                                         throw new InvalidOperationException ();
5665 #endif
5666
5667                                 if (list.Contains (item))
5668                                         throw new ArgumentException ("An item cannot be added more than once. To add an item again, you need to clone it.", "item");
5669
5670                                 if (item.ListView != null && item.ListView != owner)
5671                                         throw new ArgumentException ("Cannot add or insert the item '" + item.Text + "' in more than one place. You must first remove it from its current location or clone it.", "item");
5672
5673                                 if (is_main_collection)
5674                                         item.Owner = owner;
5675 #if NET_2_0
5676                                 else {
5677                                         if (item.Group != null)
5678                                                 item.Group.Items.Remove (item);
5679
5680                                         item.SetGroup (group);
5681                                 }
5682 #endif
5683
5684                                 list.Insert (index, item);
5685
5686                                 if (is_main_collection || item.ListView != null)
5687                                         CollectionChanged (true);
5688
5689 #if NET_2_0
5690                                 //UIA Framework event: Item Added
5691                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Add, item));
5692 #endif
5693
5694                                 return item;
5695                         }
5696
5697                         public ListViewItem Insert (int index, string text)
5698                         {
5699                                 return this.Insert (index, new ListViewItem (text));
5700                         }
5701
5702                         public ListViewItem Insert (int index, string text, int imageIndex)
5703                         {
5704                                 return this.Insert (index, new ListViewItem (text, imageIndex));
5705                         }
5706
5707 #if NET_2_0
5708                         public ListViewItem Insert (int index, string text, string imageKey)
5709                         {
5710                                 ListViewItem lvi = new ListViewItem (text, imageKey);
5711                                 return Insert (index, lvi);
5712                         }
5713
5714                         public virtual ListViewItem Insert (int index, string key, string text, int imageIndex)
5715                         {
5716                                 ListViewItem lvi = new ListViewItem (text, imageIndex);
5717                                 lvi.Name = key;
5718                                 return Insert (index, lvi);
5719                         }
5720
5721                         public virtual ListViewItem Insert (int index, string key, string text, string imageKey)
5722                         {
5723                                 ListViewItem lvi = new ListViewItem (text, imageKey);
5724                                 lvi.Name = key;
5725                                 return Insert (index, lvi);
5726                         }
5727 #endif
5728
5729                         public virtual void Remove (ListViewItem item)
5730                         {
5731 #if NET_2_0
5732                                 if (owner != null && owner.VirtualMode)
5733                                         throw new InvalidOperationException ();
5734 #endif
5735
5736                                 int idx = list.IndexOf (item);
5737                                 if (idx != -1)
5738                                         RemoveAt (idx);
5739                         }
5740
5741                         public virtual void RemoveAt (int index)
5742                         {
5743                                 if (index < 0 || index >= Count)
5744                                         throw new ArgumentOutOfRangeException ("index");
5745
5746 #if NET_2_0
5747                                 if (owner != null && owner.VirtualMode)
5748                                         throw new InvalidOperationException ();
5749 #endif
5750
5751                                 ListViewItem item = (ListViewItem) list [index];
5752
5753                                 bool selection_changed = false;
5754                                 if (is_main_collection && owner != null) {
5755
5756                                         int display_index = item.DisplayIndex;
5757                                         if (item.Focused && display_index + 1 == Count) // Last item
5758                                                 owner.SetFocusedItem (display_index == 0 ? -1 : display_index - 1);
5759
5760                                         selection_changed = owner.SelectedIndices.Contains (index);
5761                                         owner.item_control.CancelEdit (item);
5762                                 }
5763
5764                                 list.RemoveAt (index);
5765
5766 #if NET_2_0
5767                                 if (is_main_collection) {
5768                                         item.Owner = null;
5769                                         if (item.Group != null)
5770                                                 item.Group.Items.Remove (item);
5771                                 } else
5772                                         item.SetGroup (null);
5773 #else
5774                                 item.Owner = null;
5775 #endif
5776
5777                                 CollectionChanged (false);
5778                                 if (selection_changed && owner != null)
5779                                         owner.OnSelectedIndexChanged (EventArgs.Empty);
5780
5781
5782 #if NET_2_0
5783                                 //UIA Framework event: Item Removed
5784                                 OnUIACollectionChangedEvent (new CollectionChangeEventArgs (CollectionChangeAction.Remove, item));
5785 #endif
5786                         }
5787
5788 #if NET_2_0
5789                         public virtual void RemoveByKey (string key)
5790                         {
5791                                 int idx = IndexOfKey (key);
5792                                 if (idx != -1)
5793                                         RemoveAt (idx);
5794                         }
5795 #endif
5796
5797                         #endregion      // Public Methods
5798
5799                         internal ListView Owner {
5800                                 get {
5801                                         return owner;
5802                                 }
5803                                 set {
5804                                         owner = value;
5805                                 }
5806                         }
5807
5808 #if NET_2_0
5809                         internal ListViewGroup Group {
5810                                 get {
5811                                         return group;
5812                                 }
5813                                 set {
5814                                         group = value;
5815                                 }
5816                         }
5817 #endif
5818
5819                         void AddItem (ListViewItem value)
5820                         {
5821                                 if (list.Contains (value))
5822                                         throw new ArgumentException ("An item cannot be added more than once. To add an item again, you need to clone it.", "value");
5823
5824                                 if (value.ListView != null && value.ListView != owner)
5825                                         throw new ArgumentException ("Cannot add or insert the item '" + value.Text + "' in more than one place. You must first remove it from its current location or clone it.", "value");
5826                                 if (is_main_collection)
5827                                         value.Owner = owner;
5828 #if NET_2_0
5829                                 else {
5830                                         if (value.Group != null)
5831                                                 value.Group.Items.Remove (value);
5832
5833                                         value.SetGroup (group);
5834                                 }
5835 #endif
5836
5837                                 list.Add (value);
5838
5839                         }
5840
5841                         void CollectionChanged (bool sort)
5842                         {
5843                                 if (owner != null) {
5844                                         if (sort)
5845                                                 owner.Sort (false);
5846
5847                                         OnChange ();
5848                                         owner.Redraw (true);
5849                                 }
5850                         }
5851
5852 #if NET_2_0
5853                         ListViewItem RetrieveVirtualItemFromOwner (int displayIndex)
5854                         {
5855                                 RetrieveVirtualItemEventArgs args = new RetrieveVirtualItemEventArgs (displayIndex);
5856
5857                                 owner.OnRetrieveVirtualItem (args);
5858                                 ListViewItem retval = args.Item;
5859                                 retval.Owner = owner;
5860                                 retval.DisplayIndex = displayIndex;
5861                                 retval.Layout ();
5862
5863                                 return retval;
5864                         }
5865 #endif
5866
5867                         internal event CollectionChangedHandler Changed;
5868
5869                         internal void Sort (IComparer comparer)
5870                         {
5871                                 list.Sort (comparer);
5872                                 OnChange ();
5873                         }
5874
5875                         internal void OnChange ()
5876                         {
5877                                 if (Changed != null)
5878                                         Changed ();
5879                         }
5880                 }       // ListViewItemCollection
5881
5882
5883                 // In normal mode, the selection information resides in the Items,
5884                 // making SelectedIndexCollection.List read-only
5885                 //
5886                 // In virtual mode, SelectedIndexCollection directly saves the selection
5887                 // information, instead of getting it from Items, making List read-and-write
5888 #if NET_2_0
5889                 [ListBindable (false)]
5890 #endif
5891                 public class SelectedIndexCollection : IList, ICollection, IEnumerable
5892                 {
5893                         private readonly ListView owner;
5894                         private ArrayList list;
5895
5896                         #region Public Constructor
5897                         public SelectedIndexCollection (ListView owner)
5898                         {
5899                                 this.owner = owner;
5900                                 owner.Items.Changed += new CollectionChangedHandler (ItemsCollection_Changed);
5901                         }
5902                         #endregion      // Public Constructor
5903
5904                         #region Public Properties
5905                         [Browsable (false)]
5906                         public int Count {
5907                                 get {
5908                                         if (!owner.is_selection_available)
5909                                                 return 0;
5910
5911                                         return List.Count;
5912                                 }
5913                         }
5914
5915                         public bool IsReadOnly {
5916                                 get {
5917 #if NET_2_0
5918                                         return false;
5919 #else
5920                                         return true;
5921 #endif
5922                                 }
5923                         }
5924
5925                         public int this [int index] {
5926                                 get {
5927                                         if (!owner.is_selection_available || index < 0 || index >= List.Count)
5928                                                 throw new ArgumentOutOfRangeException ("index");
5929
5930                                         return (int) List [index];
5931                                 }
5932                         }
5933
5934                         bool ICollection.IsSynchronized {
5935                                 get { return false; }
5936                         }
5937
5938                         object ICollection.SyncRoot {
5939                                 get { return this; }
5940                         }
5941
5942                         bool IList.IsFixedSize {
5943                                 get {
5944 #if NET_2_0
5945                                         return false;
5946 #else
5947                                         return true;
5948 #endif
5949                                 }
5950                         }
5951
5952                         object IList.this [int index] {
5953                                 get { return this [index]; }
5954                                 set { throw new NotSupportedException ("SetItem operation is not supported."); }
5955                         }
5956                         #endregion      // Public Properties
5957
5958                         #region Public Methods
5959 #if NET_2_0
5960                         public int Add (int itemIndex)
5961                         {
5962                                 if (itemIndex < 0 || itemIndex >= owner.Items.Count)
5963                                         throw new ArgumentOutOfRangeException ("index");
5964
5965                                 if (owner.virtual_mode && !owner.is_selection_available)
5966                                         return -1;
5967
5968                                 owner.Items [itemIndex].Selected = true;
5969
5970                                 if (!owner.is_selection_available)
5971                                         return 0;
5972
5973                                 return List.Count;
5974                         }
5975 #endif
5976
5977 #if NET_2_0
5978                         public
5979 #else
5980                         internal
5981 #endif
5982                         void Clear ()
5983                         {
5984                                 if (!owner.is_selection_available)
5985                                         return;
5986
5987                                 int [] indexes = (int []) List.ToArray (typeof (int));
5988                                 foreach (int index in indexes)
5989                                         owner.Items [index].Selected = false;
5990                         }
5991
5992                         public bool Contains (int selectedIndex)
5993                         {
5994                                 return IndexOf (selectedIndex) != -1;
5995                         }
5996
5997                         public void CopyTo (Array dest, int index)
5998                         {
5999                                 List.CopyTo (dest, index);
6000                         }
6001
6002                         public IEnumerator GetEnumerator ()
6003                         {
6004                                 return List.GetEnumerator ();
6005                         }
6006
6007                         int IList.Add (object value)
6008                         {
6009                                 throw new NotSupportedException ("Add operation is not supported.");
6010                         }
6011
6012                         void IList.Clear ()
6013                         {
6014                                 Clear ();
6015                         }
6016
6017                         bool IList.Contains (object selectedIndex)
6018                         {
6019                                 if (!(selectedIndex is int))
6020                                         return false;
6021                                 return Contains ((int) selectedIndex);
6022                         }
6023
6024                         int IList.IndexOf (object selectedIndex)
6025                         {
6026                                 if (!(selectedIndex is int))
6027                                         return -1;
6028                                 return IndexOf ((int) selectedIndex);
6029                         }
6030
6031                         void IList.Insert (int index, object value)
6032                         {
6033                                 throw new NotSupportedException ("Insert operation is not supported.");
6034                         }
6035
6036                         void IList.Remove (object value)
6037                         {
6038                                 throw new NotSupportedException ("Remove operation is not supported.");
6039                         }
6040
6041                         void IList.RemoveAt (int index)
6042                         {
6043                                 throw new NotSupportedException ("RemoveAt operation is not supported.");
6044                         }
6045
6046                         public int IndexOf (int selectedIndex)
6047                         {
6048                                 if (!owner.is_selection_available)
6049                                         return -1;
6050
6051                                 return List.IndexOf (selectedIndex);
6052                         }
6053
6054 #if NET_2_0
6055                         public void Remove (int itemIndex)
6056                         {
6057                                 if (itemIndex < 0 || itemIndex >= owner.Items.Count)
6058                                         throw new ArgumentOutOfRangeException ("itemIndex");
6059
6060                                 owner.Items [itemIndex].Selected = false;
6061                         }
6062 #endif
6063                         #endregion      // Public Methods
6064
6065                         internal ArrayList List {
6066                                 get {
6067                                         if (list == null) {
6068                                                 list = new ArrayList ();
6069 #if NET_2_0
6070                                                 if (!owner.VirtualMode)
6071 #endif
6072                                                 for (int i = 0; i < owner.Items.Count; i++) {
6073                                                         if (owner.Items [i].Selected)
6074                                                                 list.Add (i);
6075                                                 }
6076                                         }
6077                                         return list;
6078                                 }
6079                         }
6080
6081                         internal void Reset ()
6082                         {
6083                                 // force re-population of list
6084                                 list = null;
6085                         }
6086
6087                         private void ItemsCollection_Changed ()
6088                         {
6089                                 Reset ();
6090                         }
6091
6092 #if NET_2_0
6093                         internal void RemoveIndex (int index)
6094                         {
6095                                 int idx = List.BinarySearch (index);
6096                                 if (idx != -1)
6097                                         List.RemoveAt (idx);
6098                         }
6099
6100                         // actually store index in the collection
6101                         // also, keep the collection sorted, as .Net does
6102                         internal void InsertIndex (int index)
6103                         {
6104                                 int iMin = 0;
6105                                 int iMax = List.Count - 1;
6106                                 while (iMin <= iMax) {
6107                                         int iMid = (iMin + iMax) / 2;
6108                                         int current_index = (int) List [iMid];
6109
6110                                         if (current_index == index)
6111                                                 return; // Already added
6112                                         if (current_index > index)
6113                                                 iMax = iMid - 1;
6114                                         else
6115                                                 iMin = iMid + 1;
6116                                 }
6117
6118                                 List.Insert (iMin, index);
6119                         }
6120 #endif
6121
6122                 }       // SelectedIndexCollection
6123
6124 #if NET_2_0
6125                 [ListBindable (false)]
6126 #endif
6127                 public class SelectedListViewItemCollection : IList, ICollection, IEnumerable
6128                 {
6129                         private readonly ListView owner;
6130
6131                         #region Public Constructor
6132                         public SelectedListViewItemCollection (ListView owner)
6133                         {
6134                                 this.owner = owner;
6135                         }
6136                         #endregion      // Public Constructor
6137
6138                         #region Public Properties
6139                         [Browsable (false)]
6140                         public int Count {
6141                                 get {
6142                                         return owner.SelectedIndices.Count;
6143                                 }
6144                         }
6145
6146                         public bool IsReadOnly {
6147                                 get { return true; }
6148                         }
6149
6150                         public ListViewItem this [int index] {
6151                                 get {
6152                                         if (!owner.is_selection_available || index < 0 || index >= Count)
6153                                                 throw new ArgumentOutOfRangeException ("index");
6154
6155                                         int item_index = owner.SelectedIndices [index];
6156                                         return owner.Items [item_index];
6157                                 }
6158                         }
6159
6160 #if NET_2_0
6161                         public virtual ListViewItem this [string key] {
6162                                 get {
6163                                         int idx = IndexOfKey (key);
6164                                         if (idx == -1)
6165                                                 return null;
6166
6167                                         return this [idx];
6168                                 }
6169                         }
6170 #endif
6171
6172                         bool ICollection.IsSynchronized {
6173                                 get { return false; }
6174                         }
6175
6176                         object ICollection.SyncRoot {
6177                                 get { return this; }
6178                         }
6179
6180                         bool IList.IsFixedSize {
6181                                 get { return true; }
6182                         }
6183
6184                         object IList.this [int index] {
6185                                 get { return this [index]; }
6186                                 set { throw new NotSupportedException ("SetItem operation is not supported."); }
6187                         }
6188                         #endregion      // Public Properties
6189
6190                         #region Public Methods
6191                         public void Clear ()
6192                         {
6193                                 owner.SelectedIndices.Clear ();
6194                         }
6195
6196                         public bool Contains (ListViewItem item)
6197                         {
6198                                 return IndexOf (item) != -1;
6199                         }
6200
6201 #if NET_2_0
6202                         public virtual bool ContainsKey (string key)
6203                         {
6204                                 return IndexOfKey (key) != -1;
6205                         }
6206 #endif
6207
6208                         public void CopyTo (Array dest, int index)
6209                         {
6210                                 if (!owner.is_selection_available)
6211                                         return;
6212                                 if (index > Count) // Throws ArgumentException instead of IOOR exception
6213                                         throw new ArgumentException ("index");
6214
6215                                 for (int i = 0; i < Count; i++)
6216                                         dest.SetValue (this [i], index++);
6217                         }
6218
6219                         public IEnumerator GetEnumerator ()
6220                         {
6221                                 if (!owner.is_selection_available)
6222                                         return (new ListViewItem [0]).GetEnumerator ();
6223
6224                                 ListViewItem [] items = new ListViewItem [Count];
6225                                 for (int i = 0; i < Count; i++)
6226                                         items [i] = this [i];
6227
6228                                 return items.GetEnumerator ();
6229                         }
6230
6231                         int IList.Add (object value)
6232                         {
6233                                 throw new NotSupportedException ("Add operation is not supported.");
6234                         }
6235
6236                         bool IList.Contains (object item)
6237                         {
6238                                 if (!(item is ListViewItem))
6239                                         return false;
6240                                 return Contains ((ListViewItem) item);
6241                         }
6242
6243                         int IList.IndexOf (object item)
6244                         {
6245                                 if (!(item is ListViewItem))
6246                                         return -1;
6247                                 return IndexOf ((ListViewItem) item);
6248                         }
6249
6250                         void IList.Insert (int index, object value)
6251                         {
6252                                 throw new NotSupportedException ("Insert operation is not supported.");
6253                         }
6254
6255                         void IList.Remove (object value)
6256                         {
6257                                 throw new NotSupportedException ("Remove operation is not supported.");
6258                         }
6259
6260                         void IList.RemoveAt (int index)
6261                         {
6262                                 throw new NotSupportedException ("RemoveAt operation is not supported.");
6263                         }
6264
6265                         public int IndexOf (ListViewItem item)
6266                         {
6267                                 if (!owner.is_selection_available)
6268                                         return -1;
6269
6270                                 for (int i = 0; i < Count; i++)
6271                                         if (this [i] == item)
6272                                                 return i;
6273
6274                                 return -1;
6275                         }
6276
6277 #if NET_2_0
6278                         public virtual int IndexOfKey (string key)
6279                         {
6280                                 if (!owner.is_selection_available || key == null || key.Length == 0)
6281                                         return -1;
6282
6283                                 for (int i = 0; i < Count; i++) {
6284                                         ListViewItem item = this [i];
6285                                         if (String.Compare (item.Name, key, true) == 0)
6286                                                 return i;
6287                                 }
6288
6289                                 return -1;
6290                         }
6291 #endif
6292                         #endregion      // Public Methods
6293
6294                 }       // SelectedListViewItemCollection
6295
6296                 internal delegate void CollectionChangedHandler ();
6297
6298                 struct ItemMatrixLocation
6299                 {
6300                         int row;
6301                         int col;
6302
6303                         public ItemMatrixLocation (int row, int col)
6304                         {
6305                                 this.row = row;
6306                                 this.col = col;
6307
6308                         }
6309
6310                         public int Col {
6311                                 get {
6312                                         return col;
6313                                 }
6314                                 set {
6315                                         col = value;
6316                                 }
6317                         }
6318
6319                         public int Row {
6320                                 get {
6321                                         return row;
6322                                 }
6323                                 set {
6324                                         row = value;
6325                                 }
6326                         }
6327
6328                 }
6329
6330                 #endregion // Subclasses
6331 #if NET_2_0
6332                 protected override void OnResize (EventArgs e)
6333                 {
6334                         base.OnResize (e);
6335                 }
6336
6337                 protected override void OnMouseLeave (EventArgs e)
6338                 {
6339                         base.OnMouseLeave (e);
6340                 }
6341
6342                 //
6343                 // ColumnReorder event
6344                 //
6345                 static object ColumnReorderedEvent = new object ();
6346                 public event ColumnReorderedEventHandler ColumnReordered {
6347                         add { Events.AddHandler (ColumnReorderedEvent, value); }
6348                         remove { Events.RemoveHandler (ColumnReorderedEvent, value); }
6349                 }
6350
6351                 protected virtual void OnColumnReordered (ColumnReorderedEventArgs e)
6352                 {
6353                         ColumnReorderedEventHandler creh = (ColumnReorderedEventHandler) (Events [ColumnReorderedEvent]);
6354
6355                         if (creh != null)
6356                                 creh (this, e);
6357                 }
6358
6359                 //
6360                 // ColumnWidthChanged
6361                 //
6362                 static object ColumnWidthChangedEvent = new object ();
6363                 public event ColumnWidthChangedEventHandler ColumnWidthChanged {
6364                         add { Events.AddHandler (ColumnWidthChangedEvent, value); }
6365                         remove { Events.RemoveHandler (ColumnWidthChangedEvent, value); }
6366                 }
6367
6368                 protected virtual void OnColumnWidthChanged (ColumnWidthChangedEventArgs e)
6369                 {
6370                         ColumnWidthChangedEventHandler eh = (ColumnWidthChangedEventHandler) (Events[ColumnWidthChangedEvent]);
6371                         if (eh != null)
6372                                 eh (this, e);
6373                 }
6374
6375                 void RaiseColumnWidthChanged (int resize_column)
6376                 {
6377                         ColumnWidthChangedEventArgs n = new ColumnWidthChangedEventArgs (resize_column);
6378
6379                         OnColumnWidthChanged (n);
6380                 }
6381
6382                 //
6383                 // ColumnWidthChanging
6384                 //
6385                 static object ColumnWidthChangingEvent = new object ();
6386                 public event ColumnWidthChangingEventHandler ColumnWidthChanging {
6387                         add { Events.AddHandler (ColumnWidthChangingEvent, value); }
6388                         remove { Events.RemoveHandler (ColumnWidthChangingEvent, value); }
6389                 }
6390
6391                 protected virtual void OnColumnWidthChanging (ColumnWidthChangingEventArgs e)
6392                 {
6393                         ColumnWidthChangingEventHandler cwceh = (ColumnWidthChangingEventHandler) (Events[ColumnWidthChangingEvent]);
6394                         if (cwceh != null)
6395                                 cwceh (this, e);
6396                 }
6397
6398                 //
6399                 // 2.0 profile based implementation
6400                 //
6401                 bool CanProceedWithResize (ColumnHeader col, int width)
6402                 {
6403                         ColumnWidthChangingEventHandler cwceh = (ColumnWidthChangingEventHandler) (Events[ColumnWidthChangingEvent]);
6404                         if (cwceh == null)
6405                                 return true;
6406
6407                         ColumnWidthChangingEventArgs changing = new ColumnWidthChangingEventArgs (col.Index, width);
6408                         cwceh (this, changing);
6409                         return !changing.Cancel;
6410                 }
6411 #else
6412                 //
6413                 // 1.0 profile based implementation
6414                 //
6415                 bool CanProceedWithResize (ColumnHeader col, int width)
6416                 {
6417                         return true;
6418                 }
6419
6420                 void RaiseColumnWidthChanged (int resize_column)
6421                 {
6422                 }
6423 #endif
6424
6425                 internal void RaiseColumnWidthChanged (ColumnHeader column)
6426                 {
6427                         int index = Columns.IndexOf (column);
6428                         RaiseColumnWidthChanged (index);
6429                 }
6430
6431 #if NET_2_0
6432
6433                 #region UIA Framework: Methods, Properties and Events
6434
6435                 static object UIALabelEditChangedEvent = new object ();
6436                 static object UIAShowGroupsChangedEvent = new object ();
6437                 static object UIAMultiSelectChangedEvent = new object ();
6438                 static object UIAViewChangedEvent = new object ();
6439                 static object UIACheckBoxesChangedEvent = new object ();
6440                 static object UIAFocusedItemChangedEvent = new object ();
6441
6442                 internal Rectangle UIAHeaderControl {
6443                         get { return header_control.Bounds; }
6444                 }
6445
6446                 internal int UIAColumns {
6447                         get { return cols; }
6448                 }
6449
6450                 internal int UIARows {
6451                         get { return rows; }
6452                 }
6453
6454                 internal ListViewGroup UIADefaultListViewGroup
6455                 {
6456                         get { return groups.DefaultGroup; }
6457                 }
6458
6459                 internal ScrollBar UIAHScrollBar {
6460                         get { return h_scroll; }
6461                 }
6462
6463                 internal ScrollBar UIAVScrollBar {
6464                         get { return v_scroll; }
6465                 }
6466
6467                 internal event EventHandler UIAShowGroupsChanged {
6468                         add { Events.AddHandler (UIAShowGroupsChangedEvent, value); }
6469                         remove { Events.RemoveHandler (UIAShowGroupsChangedEvent, value); }
6470                 }
6471
6472                 internal event EventHandler UIACheckBoxesChanged {
6473                         add { Events.AddHandler (UIACheckBoxesChangedEvent, value); }
6474                         remove { Events.RemoveHandler (UIACheckBoxesChangedEvent, value); }
6475                 }
6476
6477                 internal event EventHandler UIAMultiSelectChanged {
6478                         add { Events.AddHandler (UIAMultiSelectChangedEvent, value); }
6479                         remove { Events.RemoveHandler (UIAMultiSelectChangedEvent, value); }
6480                 }
6481
6482                 internal event EventHandler UIALabelEditChanged {
6483                         add { Events.AddHandler (UIALabelEditChangedEvent, value); }
6484                         remove { Events.RemoveHandler (UIALabelEditChangedEvent, value); }
6485                 }
6486
6487                 internal event EventHandler UIAViewChanged {
6488                         add { Events.AddHandler (UIAViewChangedEvent, value); }
6489                         remove { Events.RemoveHandler (UIAViewChangedEvent, value); }
6490                 }
6491
6492                 internal event EventHandler UIAFocusedItemChanged {
6493                         add { Events.AddHandler (UIAFocusedItemChangedEvent, value); }
6494                         remove { Events.RemoveHandler (UIAFocusedItemChangedEvent, value); }
6495                 }
6496
6497                 internal Rectangle UIAGetHeaderBounds (ListViewGroup group)
6498                 {
6499                         return group.HeaderBounds;
6500                 }
6501
6502                 internal int UIAItemsLocationLength
6503                 {
6504                         get { return items_location.Length; }
6505                 }
6506
6507                 private void OnUIACheckBoxesChanged ()
6508                 {
6509                         EventHandler eh = (EventHandler) Events [UIACheckBoxesChangedEvent];
6510                         if (eh != null)
6511                                 eh (this, EventArgs.Empty);
6512                 }
6513
6514                 private void OnUIAShowGroupsChanged ()
6515                 {
6516                         EventHandler eh = (EventHandler) Events [UIAShowGroupsChangedEvent];
6517                         if (eh != null)
6518                                 eh (this, EventArgs.Empty);
6519                 }
6520
6521                 private void OnUIAMultiSelectChanged ()
6522                 {
6523                         EventHandler eh = (EventHandler) Events [UIAMultiSelectChangedEvent];
6524                         if (eh != null)
6525                                 eh (this, EventArgs.Empty);
6526                 }
6527
6528                 private void OnUIALabelEditChanged ()
6529                 {
6530                         EventHandler eh = (EventHandler) Events [UIALabelEditChangedEvent];
6531                         if (eh != null)
6532                                 eh (this, EventArgs.Empty);
6533                 }
6534
6535                 private void OnUIAViewChanged ()
6536                 {
6537                         EventHandler eh = (EventHandler) Events [UIAViewChangedEvent];
6538                         if (eh != null)
6539                                 eh (this, EventArgs.Empty);
6540                 }
6541
6542                 internal void OnUIAFocusedItemChanged ()
6543                 {
6544                         EventHandler eh = (EventHandler) Events [UIAFocusedItemChangedEvent];
6545                         if (eh != null)
6546                                 eh (this, EventArgs.Empty);
6547                 }
6548
6549                 #endregion // UIA Framework: Methods, Properties and Events
6550
6551 #endif
6552         }
6553 }