mcs/class/Managed.Windows.Forms/System.Windows.Forms/DataGridColumnStyle.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) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Author:
  23 //      Jordi Mas i Hernandez <jordi@ximian.com>
  24 //
  25 //
  26
  27 // NOT COMPLETE
  28
  29 using System.Drawing;
  30 using System.ComponentModel;
  31 using System.Runtime.InteropServices;
  32 using System.Diagnostics;
  33
  34 namespace System.Windows.Forms
  35 {
  36         [DesignTimeVisible(false)]
  37         [DefaultProperty("Header")]
  38         [ToolboxItem(false)]
  39         public abstract class DataGridColumnStyle : Component, IDataGridColumnStyleEditingNotificationService
  40         {
  41                 [ComVisible(true)]
  42                 protected class DataGridColumnHeaderAccessibleObject : AccessibleObject
  43                 {
  44                         #region Local Variables
  45                         private DataGridColumnStyle owner;
  46                         #endregion
  47
  48                         #region Constructors
  49                         public DataGridColumnHeaderAccessibleObject (DataGridColumnStyle columnstyle)
  50                         {
  51                                 owner = columnstyle;
  52                         }
  53                         #endregion //Constructors
  54
  55                         #region Public Instance Properties
  56                         [MonoTODO]
  57                         public override Rectangle Bounds {
  58                                 get {
  59                                         throw new NotImplementedException ();
  60                                 }
  61                         }
  62
  63                         public override string Name {
  64                                 get {
  65                                         throw new NotImplementedException ();
  66                                 }
  67                         }
  68
  69                         protected DataGridColumnStyle Owner {
  70                                 get { return owner; }
  71                         }
  72
  73                         public override AccessibleObject Parent {
  74                                 get {
  75                                         throw new NotImplementedException ();
  76                                 }
  77                         }
  78
  79                         public override AccessibleRole Role {
  80                                 get {
  81                                         throw new NotImplementedException ();
  82                                 }
  83                         }
  84                         #endregion
  85
  86                         #region Public Instance Methods
  87                         [MonoTODO]
  88                         public override AccessibleObject Navigate (AccessibleNavigation navdir)
  89                         {
  90                                 throw new NotImplementedException ();
  91                         }
  92                         #endregion Public Instance Methods
  93                 }
  94
  95                 protected class CompModSwitches
  96                 {
  97                         public CompModSwitches ()
  98                         {
  99                         }
 100
 101                         #region Public Instance Methods
 102                         [MonoTODO]
 103                         public static TraceSwitch DGEditColumnEditing {
 104                                 get {
 105                                         throw new NotImplementedException ();
 106                                 }
 107                         }
 108                         #endregion Public Instance Methods
 109                 }
 110
 111                 internal enum ArrowDrawing
 112                 {
 113                         No              = 0,
 114                         Ascending       = 1,
 115                         Descending      = 2
 116                 }
 117
 118                 #region Local Variables
 119                 internal HorizontalAlignment alignment;
 120                 private int fontheight;
 121                 internal DataGridTableStyle table_style;
 122                 private string header_text;
 123                 private string mapping_name;
 124                 private string null_text;
 125                 private PropertyDescriptor property_descriptor;
 126                 private bool _readonly;
 127                 private int width;
 128                 internal bool is_default;
 129                 internal DataGrid grid;
 130                 private DataGridColumnHeaderAccessibleObject accesible_object;
 131                 private StringFormat string_format_hdr;
 132                 static string def_null_text = "(null)";
 133                 private ArrowDrawing arrow_drawing = ArrowDrawing.No;
 134                 internal bool bound;
 135                 #endregion      // Local Variables
 136
 137                 #region Constructors
 138                 public DataGridColumnStyle () : this (null)
 139                 {
 140                 }
 141
 142                 public DataGridColumnStyle (PropertyDescriptor prop)
 143                 {
 144                         property_descriptor = prop;
 145
 146                         fontheight = -1;
 147                         table_style = null;
 148                         header_text = string.Empty;
 149                         mapping_name  = string.Empty;
 150                         null_text = def_null_text;
 151                         accesible_object = new DataGridColumnHeaderAccessibleObject (this);
 152                         _readonly = false;
 153                         width = -1;
 154                         grid = null;
 155                         is_default = false;
 156                         alignment = HorizontalAlignment.Left;
 157                         string_format_hdr = new StringFormat ();
 158                         string_format_hdr.FormatFlags |= StringFormatFlags.NoWrap;
 159                         string_format_hdr.LineAlignment  = StringAlignment.Center;
 160                 }
 161
 162                 #endregion
 163
 164                 #region Public Instance Properties
 165                 [Localizable(true)]
 166                 [DefaultValue(HorizontalAlignment.Left)]
 167                 public virtual HorizontalAlignment Alignment {
 168                         get {
 169                                 return alignment;
 170                         }
 171                         set {
 172                                 if (value != alignment) {
 173                                         alignment = value;
 174
 175                                         if (table_style != null && table_style.DataGrid != null) {
 176                                                 table_style.DataGrid.Invalidate ();
 177                                         }
 178
 179                                         if (AlignmentChanged != null) {
 180                                                 AlignmentChanged (this, EventArgs.Empty);
 181                                         }
 182                                 }
 183                         }
 184                 }
 185
 186                 [Browsable(false)]
 187                 public virtual DataGridTableStyle DataGridTableStyle {
 188                         get { return table_style; }
 189                 }
 190
 191                 protected int FontHeight {
 192                         get {
 193                                 if (fontheight != -1) {
 194                                         return fontheight;
 195                                 }
 196
 197                                 if (table_style != null) {
 198                                         //return table_style.DataGrid.FontHeight
 199                                         return -1;
 200                                 }
 201
 202                                 // TODO: Default Datagrid font height
 203                                 return -1;
 204                         }
 205                 }
 206
 207                 [Browsable(false)]
 208                 public AccessibleObject HeaderAccessibleObject {
 209                         get {
 210                                 return accesible_object;
 211                         }
 212                 }
 213
 214                 [Localizable(true)]
 215                 public virtual string HeaderText {
 216                         get {
 217                                 return header_text;
 218                         }
 219                         set {
 220                                 if (value != header_text) {
 221                                         header_text = value;
 222
 223                                         Invalidate ();
 224
 225                                         if (HeaderTextChanged != null) {
 226                                                 HeaderTextChanged (this, EventArgs.Empty);
 227                                         }
 228                                 }
 229                         }
 230                 }
 231
 232                 [Editor("System.Windows.Forms.Design.DataGridColumnStyleMappingNameEditor, " + Consts.AssemblySystem_Design, typeof(System.Drawing.Design.UITypeEditor))]
 233                 [Localizable(true)]
 234                 public string MappingName {
 235                         get {
 236                                 return mapping_name;
 237                         }
 238                         set {
 239                                 if (value != mapping_name) {
 240                                         mapping_name = value;
 241
 242                                         if (MappingNameChanged != null) {
 243                                                 MappingNameChanged (this, EventArgs.Empty);
 244                                         }
 245                                 }
 246                         }
 247                 }
 248
 249                 [Localizable(true)]
 250                 public virtual string NullText {
 251                         get {
 252                                 return null_text;
 253                         }
 254                         set {
 255                                 if (value != null_text) {
 256                                         null_text = value;
 257
 258                                         if (table_style != null && table_style.DataGrid != null) {
 259                                                 table_style.DataGrid.Invalidate ();
 260                                         }
 261
 262                                         if (NullTextChanged != null) {
 263                                                 NullTextChanged (this, EventArgs.Empty);
 264                                         }
 265                                 }
 266                         }
 267                 }
 268
 269                 [Browsable(false)]
 270                 [DefaultValue(null)]
 271                 [EditorBrowsable(EditorBrowsableState.Advanced)]
 272                 public virtual PropertyDescriptor PropertyDescriptor {
 273                         get {
 274                                 return property_descriptor;
 275                         }
 276                         set {
 277                                 if (value != property_descriptor) {
 278                                         property_descriptor = value;
 279
 280                                         if (PropertyDescriptorChanged != null) {
 281                                                 PropertyDescriptorChanged (this, EventArgs.Empty);
 282                                         }
 283                                 }
 284                         }
 285                 }
 286
 287                 [DefaultValue(false)]
 288                 public virtual bool ReadOnly  {
 289                         get {
 290                                 return _readonly;
 291                         }
 292                         set {
 293                                 if (value != _readonly) {
 294                                         _readonly = value;
 295
 296                                         if (table_style != null && table_style.DataGrid != null) {
 297                                                 table_style.DataGrid.CalcAreasAndInvalidate ();
 298                                         }
 299
 300                                         if (ReadOnlyChanged != null) {
 301                                                 ReadOnlyChanged (this, EventArgs.Empty);
 302                                         }
 303                                 }
 304                         }
 305                 }
 306
 307                 [DefaultValue(100)]
 308                 [Localizable(true)]
 309                 public virtual int Width {
 310                         get {
 311                                 return width;
 312                         }
 313                         set {
 314                                 if (value != width) {
 315                                         width = value;
 316
 317                                         if (table_style != null && table_style.DataGrid != null) {
 318                                                 table_style.DataGrid.CalcAreasAndInvalidate ();
 319                                         }
 320
 321                                         if (WidthChanged != null) {
 322                                                 WidthChanged (this, EventArgs.Empty);
 323                                         }
 324                                 }
 325                         }
 326                 }
 327
 328                 #endregion      // Public Instance Properties
 329
 330                 #region Private Instance Properties
 331
 332                 internal ArrowDrawing ArrowDrawingMode {
 333                         get { return arrow_drawing; }
 334                         set { arrow_drawing = value; }
 335                 }
 336
 337                 // The logic seems to be that:
 338                 // - If DataGrid.ReadOnly is true all the tables and columns are readonly ignoring other settings
 339                 // - If DataGridTableStyle.ReadOnly is true all columns are readonly ignoring other settings
 340                 // - If DataGrid.ReadOnly and DataGridTableStyle.ReadOnly are false, the columns settings are mandatory
 341                 //
 342                 internal bool ParentReadOnly {
 343                         get {
 344                                 if (grid != null) {
 345                                         if (grid.ReadOnly == true) {
 346                                                 return true;
 347                                         }
 348                                 }
 349
 350                                 if (table_style != null) {
 351                                         if (table_style.ReadOnly == true) {
 352                                                 return true;
 353                                         }
 354                                 }
 355
 356                                 return false;
 357                         }
 358                 }
 359
 360                 internal DataGridTableStyle TableStyle {
 361                         set { table_style = value; }
 362                 }
 363
 364                 internal bool IsDefault {
 365                         get { return is_default; }
 366                 }
 367                 #endregion Private Instance Properties
 368
 369                 #region Public Instance Methods
 370                 protected internal abstract void Abort (int rowNum);
 371
 372                 [MonoTODO]
 373                 protected void BeginUpdate ()
 374                 {
 375
 376                 }
 377
 378                 protected void CheckValidDataSource (CurrencyManager value)
 379                 {
 380                         if (value == null) {
 381                                 throw new ArgumentNullException ("CurrencyManager cannot be null");
 382                         }
 383
 384                         if (property_descriptor == null) {
 385                                 PropertyDescriptorCollection propcol = value.GetItemProperties ();
 386
 387                                 for (int i = 0; i < propcol.Count ; i++) {
 388                                         if (propcol[i].Name == mapping_name) {
 389                                                 property_descriptor = propcol[i];
 390                                                 break;
 391                                         }
 392                                 }
 393
 394                                 if (property_descriptor == null)
 395                                         throw new InvalidOperationException ("The PropertyDescriptor for this column is a null reference");
 396                         }
 397                 }
 398
 399                 [MonoTODO]
 400                 protected internal virtual void ColumnStartedEditing (Control editingControl)
 401                 {
 402
 403                 }
 404
 405                 protected internal abstract bool Commit (CurrencyManager dataSource, int rowNum);
 406
 407
 408                 protected internal virtual void ConcedeFocus ()
 409                 {
 410
 411                 }
 412
 413                 protected virtual AccessibleObject CreateHeaderAccessibleObject ()
 414                 {
 415                         return new DataGridColumnHeaderAccessibleObject (this);
 416                 }
 417
 418                 protected internal virtual void Edit (CurrencyManager source, int rowNum,  Rectangle bounds,  bool readOnly)
 419                 {
 420                         Edit (source, rowNum, bounds, readOnly, string.Empty);
 421                 }
 422
 423                 protected internal virtual void Edit (CurrencyManager source, int rowNum, Rectangle bounds, bool readOnly, string instantText)
 424                 {
 425                         Edit (source, rowNum, bounds, readOnly, instantText, true);
 426                 }
 427
 428                 protected internal abstract void Edit (CurrencyManager source, int rowNum, Rectangle bounds, bool readOnly,   string instantText,  bool cellIsVisible);
 429
 430
 431                 [MonoTODO]
 432                 protected void EndUpdate ()
 433                 {
 434
 435                 }
 436
 437                 protected internal virtual void EnterNullValue () {}
 438
 439                 protected internal virtual object GetColumnValueAtRow (CurrencyManager source, int rowNum)
 440                 {
 441                         CheckValidDataSource (source);
 442                         if (rowNum >= source.Count)
 443                                 return DBNull.Value;
 444                         return property_descriptor.GetValue (source [rowNum]);
 445                 }
 446
 447                 protected internal abstract int GetMinimumHeight ();
 448
 449                 protected internal abstract int GetPreferredHeight (Graphics g, object value);
 450
 451                 protected internal abstract Size GetPreferredSize (Graphics g,  object value);
 452
 453                 void  IDataGridColumnStyleEditingNotificationService.ColumnStartedEditing (Control editingControl)
 454                 {
 455                         ColumnStartedEditing (editingControl);
 456                 }
 457
 458                 protected virtual void Invalidate ()
 459                 {
 460                         if (grid != null)
 461                                 grid.InvalidateColumn (this);
 462                 }
 463
 464                 protected internal abstract void Paint (Graphics g, Rectangle bounds, CurrencyManager source, int rowNum);
 465                 protected internal abstract void Paint (Graphics g, Rectangle bounds, CurrencyManager source, int rowNum, bool alignToRight);
 466
 467                 protected internal virtual void Paint (Graphics g, Rectangle bounds, CurrencyManager source, int rowNum,
 468                         Brush backBrush,  Brush foreBrush, bool alignToRight) {}
 469
 470                 protected internal virtual void ReleaseHostedControl () {}
 471
 472                 public void ResetHeaderText ()
 473                 {
 474                         HeaderText = string.Empty;
 475                 }
 476
 477                 protected internal virtual void SetColumnValueAtRow (CurrencyManager source, int rowNum,  object value)
 478                 {
 479                         CheckValidDataSource (source);
 480
 481                         IEditableObject editable = source [rowNum] as IEditableObject;
 482
 483                         if (editable != null)
 484                                 editable.BeginEdit ();
 485
 486                         property_descriptor.SetValue (source [rowNum], value);
 487                 }
 488
 489                 protected virtual void SetDataGrid (DataGrid value)
 490                 {
 491                         grid = value;
 492
 493                         property_descriptor = null;
 494                 }
 495
 496                 protected virtual void SetDataGridInColumn (DataGrid value)
 497                 {
 498                         SetDataGrid (value);
 499                 }
 500
 501                 internal void SetDataGridInternal (DataGrid value)
 502                 {
 503                         SetDataGridInColumn (value);
 504                 }
 505
 506                 protected internal virtual void UpdateUI (CurrencyManager source, int rowNum, string instantText)
 507                 {
 508
 509                 }
 510                 #endregion      // Public Instance Methods
 511
 512                 #region Private Instance Methods
 513                 virtual internal void OnMouseDown (MouseEventArgs e, int row, int column) {}
 514                 virtual internal void OnKeyDown (KeyEventArgs ke, int row, int column) {}
 515
 516                 internal void PaintHeader (Graphics g, Rectangle bounds, int colNum)
 517                 {
 518                         // Background
 519                         g.FillRectangle (ThemeEngine.Current.ResPool.GetSolidBrush (DataGridTableStyle.CurrentHeaderBackColor),
 520                                 bounds);
 521
 522                         if (grid.FlatMode == false) {
 523
 524                                 // Paint Borders
 525                                 g.DrawLine (ThemeEngine.Current.ResPool.GetPen (ThemeEngine.Current.ColorControlLight),
 526                                         bounds.X, bounds.Y, bounds.X + bounds.Width, bounds.Y);
 527
 528                                 if (colNum == 0) {
 529                                         g.DrawLine (ThemeEngine.Current.ResPool.GetPen (ThemeEngine.Current.ColorControlLight),
 530                                                 bounds.X, bounds.Y, bounds.X, bounds.Y + bounds.Height);
 531                                 } else {
 532                                         g.DrawLine (ThemeEngine.Current.ResPool.GetPen (ThemeEngine.Current.ColorControlLight),
 533                                                 bounds.X, bounds.Y + 2, bounds.X, bounds.Y + bounds.Height - 2);
 534                                 }
 535
 536                                 g.DrawLine (ThemeEngine.Current.ResPool.GetPen (ThemeEngine.Current.ColorControlDark),
 537                                         bounds.X + bounds.Width - 1, bounds.Y + 2 , bounds.X + bounds.Width - 1, bounds.Y + bounds.Height - 2);
 538                         }
 539
 540                         bounds.X += 2;
 541                         bounds.Width -= 2;
 542                         g.DrawString (HeaderText, DataGridTableStyle.HeaderFont, ThemeEngine.Current.ResPool.GetSolidBrush (DataGridTableStyle.CurrentHeaderForeColor),
 543                                 bounds, string_format_hdr);
 544
 545                         if (arrow_drawing != ArrowDrawing.No) {
 546                                 // Draw 6 x 6
 547                                 Point pnt = new Point (bounds.X + bounds.Width  - 12, bounds.Y + ((bounds.Height - 6)/2));
 548
 549                                 if (arrow_drawing == ArrowDrawing.Ascending) {
 550                                         g.DrawLine (SystemPens.ControlLightLight, pnt.X + 6, pnt.Y + 6, pnt.X + 3, pnt.Y);
 551                                         g.DrawLine (SystemPens.ControlDark, pnt.X, pnt.Y + 6, pnt.X + 6, pnt.Y + 6);
 552                                         g.DrawLine (SystemPens.ControlDark, pnt.X, pnt.Y + 6, pnt.X + 3, pnt.Y);
 553                                 } else {
 554                                         g.DrawLine (SystemPens.ControlLightLight, pnt.X + 6, pnt.Y, pnt.X + 3, pnt.Y + 6);
 555                                         g.DrawLine (SystemPens.ControlDark, pnt.X, pnt.Y, pnt.X + 6, pnt.Y);
 556                                         g.DrawLine (SystemPens.ControlDark, pnt.X, pnt.Y, pnt.X + 3, pnt.Y + 6);
 557                                 }
 558
 559                         }
 560                 }
 561
 562                 internal void PaintNewRow (Graphics g, Rectangle bounds, Brush backBrush, Brush foreBrush)
 563                 {
 564                         g.FillRectangle (backBrush, bounds);
 565                         PaintGridLine (g, bounds);
 566                 }
 567
 568                 internal void PaintGridLine (Graphics g, Rectangle bounds)
 569                 {
 570                         if (table_style.CurrentGridLineStyle != DataGridLineStyle.Solid) {
 571                                 return;
 572                         }
 573
 574                         g.DrawLine (ThemeEngine.Current.ResPool.GetPen (table_style.CurrentGridLineColor),
 575                                 bounds.X, bounds.Y + bounds.Height - 1, bounds.X + bounds.Width - 1, bounds.Y + bounds.Height - 1);
 576
 577                         g.DrawLine (ThemeEngine.Current.ResPool.GetPen (table_style.CurrentGridLineColor),
 578                                 bounds.X + bounds.Width - 1, bounds.Y , bounds.X + bounds.Width - 1, bounds.Y + bounds.Height);
 579                 }
 580
 581                 #endregion Private Instance Methods
 582
 583
 584                 #region Events
 585                 public event EventHandler AlignmentChanged;
 586                 public event EventHandler FontChanged;
 587                 public event EventHandler HeaderTextChanged;
 588                 public event EventHandler MappingNameChanged;
 589                 public event EventHandler NullTextChanged;
 590
 591                 [Browsable(false)]
 592                 [EditorBrowsable(EditorBrowsableState.Advanced)]
 593                 public event EventHandler PropertyDescriptorChanged;
 594                 public event EventHandler ReadOnlyChanged;
 595                 public event EventHandler WidthChanged;
 596                 #endregion      // Events
 597         }
 598 }