mcs/class/System.Web/System.Web.UI.WebControls/FormView.cs

   1 //
   2 // System.Web.UI.WebControls.FormView.cs
   3 //
   4 // Authors:
   5 //      Lluis Sanchez Gual (lluis@novell.com)
   6 //
   7 // (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 #if NET_2_0
  30
  31 using System;
  32 using System.Collections;
  33 using System.Collections.Specialized;
  34 using System.ComponentModel;
  35 using System.Web.UI;
  36 using System.Security.Permissions;
  37 using System.Text;
  38 using System.IO;
  39 using System.Reflection;
  40
  41 namespace System.Web.UI.WebControls
  42 {
  43         [SupportsEventValidation]
  44         [DesignerAttribute ("System.Web.UI.Design.WebControls.FormViewDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  45         [ControlValuePropertyAttribute ("SelectedValue")]
  46         [DefaultEventAttribute ("PageIndexChanging")]
  47         [AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  48         [AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  49         public class FormView: CompositeDataBoundControl, IDataItemContainer, INamingContainer, IPostBackEventHandler, IPostBackContainer
  50         {
  51                 object dataItem;
  52
  53                 Table table;
  54                 FormViewRow headerRow;
  55                 FormViewRow footerRow;
  56                 FormViewRow bottomPagerRow;
  57                 FormViewRow topPagerRow;
  58                 FormViewRow itemRow;
  59
  60                 IOrderedDictionary currentEditRowKeys;
  61                 IOrderedDictionary currentEditNewValues;
  62                 IOrderedDictionary currentEditOldValues;
  63
  64                 ITemplate pagerTemplate;
  65                 ITemplate emptyDataTemplate;
  66                 ITemplate headerTemplate;
  67                 ITemplate footerTemplate;
  68                 ITemplate editItemTemplate;
  69                 ITemplate insertItemTemplate;
  70                 ITemplate itemTemplate;
  71
  72                 PropertyDescriptor[] cachedKeyProperties;
  73                 readonly string[] emptyKeys = new string[0];
  74                 readonly string unhandledEventExceptionMessage = "The FormView '{0}' fired event {1} which wasn't handled.";
  75
  76                 // View state
  77                 PagerSettings pagerSettings;
  78
  79                 TableItemStyle editRowStyle;
  80                 TableItemStyle insertRowStyle;
  81                 TableItemStyle emptyDataRowStyle;
  82                 TableItemStyle footerStyle;
  83                 TableItemStyle headerStyle;
  84                 TableItemStyle pagerStyle;
  85                 TableItemStyle rowStyle;
  86
  87                 IOrderedDictionary _keyTable;
  88                 DataKey key;
  89                 DataKey oldEditValues;
  90
  91                 static readonly object PageIndexChangedEvent = new object();
  92                 static readonly object PageIndexChangingEvent = new object();
  93                 static readonly object ItemCommandEvent = new object();
  94                 static readonly object ItemCreatedEvent = new object();
  95                 static readonly object ItemDeletedEvent = new object();
  96                 static readonly object ItemDeletingEvent = new object();
  97                 static readonly object ItemInsertedEvent = new object();
  98                 static readonly object ItemInsertingEvent = new object();
  99                 static readonly object ModeChangingEvent = new object();
 100                 static readonly object ModeChangedEvent = new object();
 101                 static readonly object ItemUpdatedEvent = new object();
 102                 static readonly object ItemUpdatingEvent = new object();
 103
 104                 // Control state
 105                 int pageIndex;
 106                 FormViewMode currentMode = FormViewMode.ReadOnly;
 107                 bool hasCurrentMode;
 108                 int pageCount;
 109
 110                 public event EventHandler PageIndexChanged {
 111                         add { Events.AddHandler (PageIndexChangedEvent, value); }
 112                         remove { Events.RemoveHandler (PageIndexChangedEvent, value); }
 113                 }
 114
 115                 public event FormViewPageEventHandler PageIndexChanging {
 116                         add { Events.AddHandler (PageIndexChangingEvent, value); }
 117                         remove { Events.RemoveHandler (PageIndexChangingEvent, value); }
 118                 }
 119
 120                 public event FormViewCommandEventHandler ItemCommand {
 121                         add { Events.AddHandler (ItemCommandEvent, value); }
 122                         remove { Events.RemoveHandler (ItemCommandEvent, value); }
 123                 }
 124
 125                 public event EventHandler ItemCreated {
 126                         add { Events.AddHandler (ItemCreatedEvent, value); }
 127                         remove { Events.RemoveHandler (ItemCreatedEvent, value); }
 128                 }
 129
 130                 public event FormViewDeletedEventHandler ItemDeleted {
 131                         add { Events.AddHandler (ItemDeletedEvent, value); }
 132                         remove { Events.RemoveHandler (ItemDeletedEvent, value); }
 133                 }
 134
 135                 public event FormViewDeleteEventHandler ItemDeleting {
 136                         add { Events.AddHandler (ItemDeletingEvent, value); }
 137                         remove { Events.RemoveHandler (ItemDeletingEvent, value); }
 138                 }
 139
 140                 public event FormViewInsertedEventHandler ItemInserted {
 141                         add { Events.AddHandler (ItemInsertedEvent, value); }
 142                         remove { Events.RemoveHandler (ItemInsertedEvent, value); }
 143                 }
 144
 145                 public event FormViewInsertEventHandler ItemInserting {
 146                         add { Events.AddHandler (ItemInsertingEvent, value); }
 147                         remove { Events.RemoveHandler (ItemInsertingEvent, value); }
 148                 }
 149
 150                 public event FormViewModeEventHandler ModeChanging {
 151                         add { Events.AddHandler (ModeChangingEvent, value); }
 152                         remove { Events.RemoveHandler (ModeChangingEvent, value); }
 153                 }
 154
 155                 public event EventHandler ModeChanged {
 156                         add { Events.AddHandler (ModeChangedEvent, value); }
 157                         remove { Events.RemoveHandler (ModeChangedEvent, value); }
 158                 }
 159
 160                 public event FormViewUpdatedEventHandler ItemUpdated {
 161                         add { Events.AddHandler (ItemUpdatedEvent, value); }
 162                         remove { Events.RemoveHandler (ItemUpdatedEvent, value); }
 163                 }
 164
 165                 public event FormViewUpdateEventHandler ItemUpdating {
 166                         add { Events.AddHandler (ItemUpdatingEvent, value); }
 167                         remove { Events.RemoveHandler (ItemUpdatingEvent, value); }
 168                 }
 169
 170                 protected virtual void OnPageIndexChanged (EventArgs e)
 171                 {
 172                         if (Events != null) {
 173                                 EventHandler eh = (EventHandler) Events [PageIndexChangedEvent];
 174                                 if (eh != null) eh (this, e);
 175                         }
 176                 }
 177
 178                 protected virtual void OnPageIndexChanging (FormViewPageEventArgs e)
 179                 {
 180                         if (Events != null) {
 181                                 FormViewPageEventHandler eh = (FormViewPageEventHandler) Events [PageIndexChangingEvent];
 182                                 if (eh != null) {
 183                                         eh (this, e);
 184                                         return;
 185                                 }
 186                         }
 187                         if (!IsBoundUsingDataSourceID)
 188                                 throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "PageIndexChanging"));
 189                 }
 190
 191                 protected virtual void OnItemCommand (FormViewCommandEventArgs e)
 192                 {
 193                         if (Events != null) {
 194                                 FormViewCommandEventHandler eh = (FormViewCommandEventHandler) Events [ItemCommandEvent];
 195                                 if (eh != null) eh (this, e);
 196                         }
 197                 }
 198
 199                 protected virtual void OnItemCreated (EventArgs e)
 200                 {
 201                         if (Events != null) {
 202                                 EventHandler eh = (EventHandler) Events [ItemCreatedEvent];
 203                                 if (eh != null) eh (this, e);
 204                         }
 205                 }
 206
 207                 protected virtual void OnItemDeleted (FormViewDeletedEventArgs e)
 208                 {
 209                         if (Events != null) {
 210                                 FormViewDeletedEventHandler eh = (FormViewDeletedEventHandler) Events [ItemDeletedEvent];
 211                                 if (eh != null) eh (this, e);
 212                         }
 213                 }
 214
 215                 protected virtual void OnItemInserted (FormViewInsertedEventArgs e)
 216                 {
 217                         if (Events != null) {
 218                                 FormViewInsertedEventHandler eh = (FormViewInsertedEventHandler) Events [ItemInsertedEvent];
 219                                 if (eh != null) eh (this, e);
 220                         }
 221                 }
 222
 223                 protected virtual void OnItemInserting (FormViewInsertEventArgs e)
 224                 {
 225                         if (Events != null) {
 226                                 FormViewInsertEventHandler eh = (FormViewInsertEventHandler) Events [ItemInsertingEvent];
 227                                 if (eh != null) {
 228                                         eh (this, e);
 229                                         return;
 230                                 }
 231                         }
 232                         if (!IsBoundUsingDataSourceID)
 233                                 throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "ItemInserting"));
 234                 }
 235
 236                 protected virtual void OnItemDeleting (FormViewDeleteEventArgs e)
 237                 {
 238                         if (Events != null) {
 239                                 FormViewDeleteEventHandler eh = (FormViewDeleteEventHandler) Events [ItemDeletingEvent];
 240                                 if (eh != null) {
 241                                         eh (this, e);
 242                                         return;
 243                                 }
 244                         }
 245                         if (!IsBoundUsingDataSourceID)
 246                                 throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "ItemDeleting"));
 247                 }
 248
 249                 protected virtual void OnModeChanged (EventArgs e)
 250                 {
 251                         if (Events != null) {
 252                                 EventHandler eh = (EventHandler) Events [ModeChangedEvent];
 253                                 if (eh != null) eh (this, e);
 254                         }
 255                 }
 256
 257                 protected virtual void OnModeChanging (FormViewModeEventArgs e)
 258                 {
 259                         if (Events != null) {
 260                                 FormViewModeEventHandler eh = (FormViewModeEventHandler) Events [ModeChangingEvent];
 261                                 if (eh != null) {
 262                                         eh (this, e);
 263                                         return;
 264                                 }
 265                         }
 266                         if (!IsBoundUsingDataSourceID)
 267                                 throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "ModeChanging"));
 268                 }
 269
 270                 protected virtual void OnItemUpdated (FormViewUpdatedEventArgs e)
 271                 {
 272                         if (Events != null) {
 273                                 FormViewUpdatedEventHandler eh = (FormViewUpdatedEventHandler) Events [ItemUpdatedEvent];
 274                                 if (eh != null) eh (this, e);
 275                         }
 276                 }
 277
 278                 protected virtual void OnItemUpdating (FormViewUpdateEventArgs e)
 279                 {
 280                         if (Events != null) {
 281                                 FormViewUpdateEventHandler eh = (FormViewUpdateEventHandler) Events [ItemUpdatingEvent];
 282                                 if (eh != null) {
 283                                         eh (this, e);
 284                                         return;
 285                                 }
 286                         }
 287                         if (!IsBoundUsingDataSourceID)
 288                                 throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "ItemUpdating"));
 289                 }
 290
 291
 292                 [WebCategoryAttribute ("Paging")]
 293                 [DefaultValueAttribute (false)]
 294                 public virtual bool AllowPaging {
 295                         get {
 296                                 object ob = ViewState ["AllowPaging"];
 297                                 if (ob != null) return (bool) ob;
 298                                 return false;
 299                         }
 300                         set {
 301                                 ViewState ["AllowPaging"] = value;
 302                                 RequireBinding ();
 303                         }
 304                 }
 305
 306                 [UrlPropertyAttribute]
 307                 [WebCategoryAttribute ("Appearance")]
 308                 [DefaultValueAttribute ("")]
 309                 [EditorAttribute ("System.Web.UI.Design.ImageUrlEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
 310                 public virtual string BackImageUrl {
 311                         get {
 312                                 if (ControlStyleCreated)
 313                                         return ((TableStyle) ControlStyle).BackImageUrl;
 314                                 return String.Empty;
 315                         }
 316                         set {
 317                                 ((TableStyle) ControlStyle).BackImageUrl = value;
 318                         }
 319                 }
 320
 321                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 322                 [BrowsableAttribute (false)]
 323                 public virtual FormViewRow BottomPagerRow {
 324                         get {
 325                                 EnsureChildControls ();
 326                                 return bottomPagerRow;
 327                         }
 328                 }
 329
 330                 [WebCategoryAttribute ("Accessibility")]
 331                 [DefaultValueAttribute ("")]
 332                 [LocalizableAttribute (true)]
 333                 public virtual string Caption {
 334                         get {
 335                                 object ob = ViewState ["Caption"];
 336                                 if (ob != null) return (string) ob;
 337                                 return string.Empty;
 338                         }
 339                         set {
 340                                 ViewState ["Caption"] = value;
 341                                 RequireBinding ();
 342                         }
 343                 }
 344
 345                 [WebCategoryAttribute ("Accessibility")]
 346                 [DefaultValueAttribute (TableCaptionAlign.NotSet)]
 347                 public virtual TableCaptionAlign CaptionAlign
 348                 {
 349                         get {
 350                                 object o = ViewState ["CaptionAlign"];
 351                                 if(o != null) return (TableCaptionAlign) o;
 352                                 return TableCaptionAlign.NotSet;
 353                         }
 354                         set {
 355                                 ViewState ["CaptionAlign"] = value;
 356                                 RequireBinding ();
 357                         }
 358                 }
 359
 360                 [WebCategoryAttribute ("Layout")]
 361                 [DefaultValueAttribute (-1)]
 362                 public virtual int CellPadding
 363                 {
 364                         get {
 365                                 if (ControlStyleCreated)
 366                                         return ((TableStyle) ControlStyle).CellPadding;
 367                                 return -1;
 368                         }
 369                         set {
 370                                 ((TableStyle) ControlStyle).CellPadding = value;
 371                         }
 372                 }
 373
 374                 [WebCategoryAttribute ("Layout")]
 375                 [DefaultValueAttribute (0)]
 376                 public virtual int CellSpacing
 377                 {
 378                         get {
 379                                 if (ControlStyleCreated)
 380                                         return ((TableStyle) ControlStyle).CellSpacing;
 381                                 return 0;
 382                         }
 383                         set {
 384                                 ((TableStyle) ControlStyle).CellSpacing = value;
 385                         }
 386                 }
 387
 388                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 389                 [BrowsableAttribute (false)]
 390                 public FormViewMode CurrentMode {
 391                         get {
 392                                 return hasCurrentMode ? currentMode : DefaultMode;
 393                         }
 394                         private set {
 395                                 hasCurrentMode = true;
 396                                 currentMode = value;
 397                         }
 398                 }
 399
 400                 FormViewMode defaultMode;
 401
 402                 [DefaultValueAttribute (FormViewMode.ReadOnly)]
 403                 [WebCategoryAttribute ("Behavior")]
 404                 public virtual FormViewMode DefaultMode {
 405                         get {
 406                                 return defaultMode;
 407                         }
 408                         set {
 409                                 defaultMode = value;
 410                                 RequireBinding ();
 411                         }
 412                 }
 413
 414                 string[] dataKeyNames;
 415                 [DefaultValueAttribute (null)]
 416                 [WebCategoryAttribute ("Data")]
 417                 [TypeConverter (typeof(StringArrayConverter))]
 418                 [EditorAttribute ("System.Web.UI.Design.WebControls.DataFieldEditor, " + Consts.AssemblySystem_Design, "System.Drawing.Design.UITypeEditor, " + Consts.AssemblySystem_Drawing)]
 419                 public virtual string[] DataKeyNames
 420                 {
 421                         get {
 422                                 if (dataKeyNames == null)
 423                                         return emptyKeys;
 424                                 return dataKeyNames;
 425                         }
 426                         set {
 427                                 dataKeyNames = value;
 428                                 RequireBinding ();
 429                         }
 430                 }
 431
 432                 IOrderedDictionary KeyTable {
 433                         get {
 434                                 if (_keyTable == null) {
 435                                         _keyTable = new OrderedDictionary (DataKeyNames.Length);
 436                                 }
 437                                 return _keyTable;
 438                         }
 439                 }
 440
 441                 [BrowsableAttribute (false)]
 442                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 443                 public virtual DataKey DataKey {
 444                         get {
 445                                 if (key == null) {
 446                                         key= new DataKey (KeyTable);
 447                                 }
 448                                 return key;
 449                         }
 450                 }
 451
 452                 DataKey OldEditValues {
 453                         get {
 454                                 if (oldEditValues == null) {
 455                                         oldEditValues = new DataKey (new OrderedDictionary ());
 456                                 }
 457                                 return oldEditValues;
 458                         }
 459                 }
 460
 461                 [DefaultValue (null)]
 462                 [TemplateContainer (typeof(FormView), BindingDirection.TwoWay)]
 463                 [PersistenceMode (PersistenceMode.InnerProperty)]
 464                 [Browsable (false)]
 465                 public virtual ITemplate EditItemTemplate {
 466                         get { return editItemTemplate; }
 467                         set { editItemTemplate = value; }
 468                 }
 469
 470                 [WebCategoryAttribute ("Styles")]
 471                 [PersistenceMode (PersistenceMode.InnerProperty)]
 472                 [NotifyParentProperty (true)]
 473                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 474                 [DefaultValueAttribute (null)]
 475                 public TableItemStyle EditRowStyle {
 476                         get {
 477                                 if (editRowStyle == null) {
 478                                         editRowStyle = new TableItemStyle ();
 479                                         if (IsTrackingViewState)
 480                                                 editRowStyle.TrackViewState();
 481                                 }
 482                                 return editRowStyle;
 483                         }
 484                 }
 485
 486                 [WebCategoryAttribute ("Styles")]
 487                 [PersistenceMode (PersistenceMode.InnerProperty)]
 488                 [NotifyParentProperty (true)]
 489                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 490                 [DefaultValueAttribute (null)]
 491                 public TableItemStyle EmptyDataRowStyle {
 492                         get {
 493                                 if (emptyDataRowStyle == null) {
 494                                         emptyDataRowStyle = new TableItemStyle ();
 495                                         if (IsTrackingViewState)
 496                                                 emptyDataRowStyle.TrackViewState();
 497                                 }
 498                                 return emptyDataRowStyle;
 499                         }
 500                 }
 501
 502                 [DefaultValue (null)]
 503                 [TemplateContainer (typeof(FormView), BindingDirection.OneWay)]
 504                 [PersistenceMode (PersistenceMode.InnerProperty)]
 505                 [Browsable (false)]
 506                 public virtual ITemplate EmptyDataTemplate {
 507                         get { return emptyDataTemplate; }
 508                         set { emptyDataTemplate = value; }
 509                 }
 510
 511                 [LocalizableAttribute (true)]
 512                 [WebCategoryAttribute ("Appearance")]
 513                 [DefaultValueAttribute ("")]
 514                 public virtual string EmptyDataText {
 515                         get {
 516                                 object ob = ViewState ["EmptyDataText"];
 517                                 if (ob != null) return (string) ob;
 518                                 return string.Empty;
 519                         }
 520                         set {
 521                                 ViewState ["EmptyDataText"] = value;
 522                                 RequireBinding ();
 523                         }
 524                 }
 525
 526                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 527                 [BrowsableAttribute (false)]
 528                 public virtual FormViewRow FooterRow {
 529                         get {
 530                                 EnsureChildControls ();
 531                                 return footerRow;
 532                         }
 533                 }
 534
 535                 [DefaultValue (null)]
 536                 [TemplateContainer (typeof(FormView), BindingDirection.OneWay)]
 537                 [PersistenceMode (PersistenceMode.InnerProperty)]
 538                 [Browsable (false)]
 539                 public virtual ITemplate FooterTemplate {
 540                         get { return footerTemplate; }
 541                         set { footerTemplate = value; }
 542                 }
 543
 544                 [LocalizableAttribute (true)]
 545                 [WebCategoryAttribute ("Appearance")]
 546                 [DefaultValueAttribute ("")]
 547                 public virtual string FooterText {
 548                         get {
 549                                 object ob = ViewState ["FooterText"];
 550                                 if (ob != null) return (string) ob;
 551                                 return string.Empty;
 552                         }
 553                         set {
 554                                 ViewState ["FooterText"] = value;
 555                                 RequireBinding ();
 556                         }
 557                 }
 558
 559                 [WebCategoryAttribute ("Styles")]
 560                 [PersistenceMode (PersistenceMode.InnerProperty)]
 561                 [NotifyParentProperty (true)]
 562                 [DefaultValue (null)]
 563                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 564                 public TableItemStyle FooterStyle {
 565                         get {
 566                                 if (footerStyle == null) {
 567                                         footerStyle = new TableItemStyle ();
 568                                         if (IsTrackingViewState)
 569                                                 footerStyle.TrackViewState();
 570                                 }
 571                                 return footerStyle;
 572                         }
 573                 }
 574
 575                 [WebCategoryAttribute ("Appearance")]
 576                 [DefaultValueAttribute (GridLines.None)]
 577                 public virtual GridLines GridLines {
 578                         get {
 579                                 if (ControlStyleCreated)
 580                                         return ((TableStyle) ControlStyle).GridLines;
 581                                 return GridLines.None;
 582                         }
 583                         set {
 584                                 ((TableStyle) ControlStyle).GridLines = value;
 585                         }
 586                 }
 587
 588                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 589                 [BrowsableAttribute (false)]
 590                 public virtual FormViewRow HeaderRow {
 591                         get {
 592                                 EnsureChildControls ();
 593                                 return headerRow;
 594                         }
 595                 }
 596
 597                 [WebCategoryAttribute ("Styles")]
 598                 [PersistenceMode (PersistenceMode.InnerProperty)]
 599                 [NotifyParentProperty (true)]
 600                 [DefaultValue (null)]
 601                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 602                 public TableItemStyle HeaderStyle {
 603                         get {
 604                                 if (headerStyle == null) {
 605                                         headerStyle = new TableItemStyle ();
 606                                         if (IsTrackingViewState)
 607                                                 headerStyle.TrackViewState();
 608                                 }
 609                                 return headerStyle;
 610                         }
 611                 }
 612
 613                 [DefaultValue (null)]
 614                 [TemplateContainer (typeof(FormView), BindingDirection.OneWay)]
 615                 [PersistenceMode (PersistenceMode.InnerProperty)]
 616                 [Browsable (false)]
 617                 public virtual ITemplate HeaderTemplate {
 618                         get { return headerTemplate; }
 619                         set { headerTemplate = value; }
 620                 }
 621
 622                 [LocalizableAttribute (true)]
 623                 [WebCategoryAttribute ("Appearance")]
 624                 [DefaultValueAttribute ("")]
 625                 public virtual string HeaderText {
 626                         get {
 627                                 object ob = ViewState ["HeaderText"];
 628                                 if (ob != null) return (string) ob;
 629                                 return string.Empty;
 630                         }
 631                         set {
 632                                 ViewState ["HeaderText"] = value;
 633                                 RequireBinding ();
 634                         }
 635                 }
 636
 637                 [Category ("Layout")]
 638                 [DefaultValueAttribute (HorizontalAlign.NotSet)]
 639                 public virtual HorizontalAlign HorizontalAlign {
 640                         get {
 641                                 if (ControlStyleCreated)
 642                                         return ((TableStyle) ControlStyle).HorizontalAlign;
 643                                 return HorizontalAlign.NotSet;
 644                         }
 645                         set {
 646                                 ((TableStyle) ControlStyle).HorizontalAlign = value;
 647                         }
 648                 }
 649
 650                 [DefaultValue (null)]
 651                 [TemplateContainer (typeof(FormView), BindingDirection.TwoWay)]
 652                 [PersistenceMode (PersistenceMode.InnerProperty)]
 653                 [Browsable (false)]
 654                 public virtual ITemplate InsertItemTemplate {
 655                         get { return insertItemTemplate; }
 656                         set { insertItemTemplate = value; }
 657                 }
 658
 659                 [WebCategoryAttribute ("Styles")]
 660                 [PersistenceMode (PersistenceMode.InnerProperty)]
 661                 [NotifyParentProperty (true)]
 662                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 663                 [DefaultValueAttribute (null)]
 664                 public TableItemStyle InsertRowStyle {
 665                         get {
 666                                 if (insertRowStyle == null) {
 667                                         insertRowStyle = new TableItemStyle ();
 668                                         if (IsTrackingViewState)
 669                                                 insertRowStyle.TrackViewState();
 670                                 }
 671                                 return insertRowStyle;
 672                         }
 673                 }
 674
 675                 [DefaultValue (null)]
 676                 [TemplateContainer (typeof(FormView), BindingDirection.TwoWay)]
 677                 [PersistenceMode (PersistenceMode.InnerProperty)]
 678                 [Browsable (false)]
 679                 public virtual ITemplate ItemTemplate {
 680                         get { return itemTemplate; }
 681                         set { itemTemplate = value; }
 682                 }
 683
 684                 [BrowsableAttribute (false)]
 685                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 686                 public virtual int PageCount {
 687                         get {
 688                                 return pageCount;
 689                         }
 690                         private set {
 691                                 pageCount = value;
 692                         }
 693                 }
 694
 695                 [WebCategoryAttribute ("Paging")]
 696                 [BindableAttribute (true, BindingDirection.OneWay)]
 697                 [DefaultValueAttribute (0)]
 698                 public virtual int PageIndex {
 699                         get {
 700                                 return pageIndex;
 701                         }
 702                         set {
 703                                 if (value < -1)
 704                                         throw new ArgumentOutOfRangeException ("PageIndex must be non-negative");
 705                                 if (pageIndex == value || value == -1)
 706                                         return;
 707                                 pageIndex = value;
 708                                 RequireBinding ();
 709                         }
 710                 }
 711
 712                 [WebCategoryAttribute ("Paging")]
 713                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Content)]
 714                 [NotifyParentPropertyAttribute (true)]
 715                 [PersistenceModeAttribute (PersistenceMode.InnerProperty)]
 716                 public virtual PagerSettings PagerSettings {
 717                         get {
 718                                 if (pagerSettings == null) {
 719                                         pagerSettings = new PagerSettings (this);
 720                                         if (IsTrackingViewState)
 721                                                 ((IStateManager)pagerSettings).TrackViewState ();
 722                                 }
 723                                 return pagerSettings;
 724                         }
 725                 }
 726
 727                 [WebCategoryAttribute ("Styles")]
 728                 [PersistenceMode (PersistenceMode.InnerProperty)]
 729                 [NotifyParentProperty (true)]
 730                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 731                 public TableItemStyle PagerStyle {
 732                         get {
 733                                 if (pagerStyle == null) {
 734                                         pagerStyle = new TableItemStyle ();
 735                                         if (IsTrackingViewState)
 736                                                 pagerStyle.TrackViewState();
 737                                 }
 738                                 return pagerStyle;
 739                         }
 740                 }
 741
 742
 743                 [DefaultValue (null)]
 744                 [TemplateContainerAttribute (typeof (FormView))]
 745                 [PersistenceMode (PersistenceMode.InnerProperty)]
 746                 [Browsable (false)]
 747                 public virtual ITemplate PagerTemplate {
 748                         get { return pagerTemplate; }
 749                         set { pagerTemplate = value; }
 750                 }
 751
 752                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 753                 [BrowsableAttribute (false)]
 754                 public virtual FormViewRow Row {
 755                         get {
 756                                 EnsureChildControls ();
 757                                 return itemRow;
 758                         }
 759                 }
 760
 761                 [WebCategoryAttribute ("Styles")]
 762                 [PersistenceMode (PersistenceMode.InnerProperty)]
 763                 [NotifyParentProperty (true)]
 764                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 765                 [DefaultValue (null)]
 766                 public TableItemStyle RowStyle {
 767                         get {
 768                                 if (rowStyle == null) {
 769                                         rowStyle = new TableItemStyle ();
 770                                         if (IsTrackingViewState)
 771                                                 rowStyle.TrackViewState();
 772                                 }
 773                                 return rowStyle;
 774                         }
 775                 }
 776
 777                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 778                 [BrowsableAttribute (false)]
 779                 public object SelectedValue {
 780                         get { return DataKey.Value; }
 781                 }
 782
 783                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 784                 [BrowsableAttribute (false)]
 785                 public virtual FormViewRow TopPagerRow {
 786                         get {
 787                                 EnsureChildControls ();
 788                                 return topPagerRow;
 789                         }
 790                 }
 791
 792                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 793                 [BrowsableAttribute (false)]
 794                 public virtual object DataItem {
 795                         get {
 796                                 return dataItem;
 797                         }
 798                 }
 799
 800                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 801                 [BrowsableAttribute (false)]
 802                 public int DataItemCount {
 803                         get { return PageCount; }
 804                 }
 805
 806                 [DesignerSerializationVisibilityAttribute (DesignerSerializationVisibility.Hidden)]
 807                 [BrowsableAttribute (false)]
 808                 public virtual int DataItemIndex {
 809                         get { return PageIndex; }
 810                 }
 811
 812                 int IDataItemContainer.DataItemIndex {
 813                         get { return DataItemIndex; }
 814                 }
 815
 816                 int IDataItemContainer.DisplayIndex {
 817                         get { return PageIndex; }
 818                 }
 819
 820                 public virtual bool IsBindableType (Type type)
 821                 {
 822                         return type.IsPrimitive || type == typeof (string) || type == typeof (DateTime) || type == typeof (Guid) || type == typeof (Decimal);
 823                 }
 824
 825                 protected override DataSourceSelectArguments CreateDataSourceSelectArguments ()
 826                 {
 827                         DataSourceSelectArguments arg = new DataSourceSelectArguments ();
 828                         DataSourceView view = GetData ();
 829                         if (AllowPaging && view.CanPage) {
 830                                 arg.StartRowIndex = PageIndex;
 831                                 if (view.CanRetrieveTotalRowCount) {
 832                                         arg.RetrieveTotalRowCount = true;
 833                                         arg.MaximumRows = 1;
 834                                 }
 835                                 else {
 836                                         arg.MaximumRows = -1;
 837                                 }
 838                         }
 839                         return arg;
 840                 }
 841
 842                 protected virtual FormViewRow CreateRow (int rowIndex, DataControlRowType rowType, DataControlRowState rowState)
 843                 {
 844                         if (rowType == DataControlRowType.Pager)
 845                                 return new FormViewPagerRow (rowIndex, rowType, rowState);
 846                         else
 847                                 return new FormViewRow (rowIndex, rowType, rowState);
 848                 }
 849
 850                 void RequireBinding ()
 851                 {
 852                         if (Initialized) {
 853                                 RequiresDataBinding = true;
 854                         }
 855                 }
 856
 857                 protected virtual Table CreateTable ()
 858                 {
 859                         return new ContainedTable (this);
 860                 }
 861
 862                 protected override void EnsureDataBound ()
 863                 {
 864                         if (CurrentMode == FormViewMode.Insert) {
 865                                 if (RequiresDataBinding) {
 866                                         OnDataBinding (EventArgs.Empty);
 867                                         RequiresDataBinding = false;
 868                                         InternalPerformDataBinding (null);
 869                                         MarkAsDataBound ();
 870                                         OnDataBound (EventArgs.Empty);
 871                                 }
 872                         }
 873                         else
 874                                 base.EnsureDataBound ();
 875                 }
 876
 877                 protected override Style CreateControlStyle ()
 878                 {
 879                         TableStyle style = new TableStyle (ViewState);
 880                         style.CellSpacing = 0;
 881                         return style;
 882                 }
 883
 884                 protected override int CreateChildControls (IEnumerable data, bool dataBinding)
 885                 {
 886                         PagedDataSource dataSource = new PagedDataSource ();
 887                         dataSource.DataSource = CurrentMode != FormViewMode.Insert ? data : null;
 888                         dataSource.AllowPaging = AllowPaging;
 889                         dataSource.PageSize = 1;
 890                         dataSource.CurrentPageIndex = PageIndex;
 891
 892                         if (dataBinding && CurrentMode != FormViewMode.Insert) {
 893                                 DataSourceView view = GetData ();
 894                                 if (view != null && view.CanPage) {
 895                                         dataSource.AllowServerPaging = true;
 896                                         if (SelectArguments.RetrieveTotalRowCount)
 897                                                 dataSource.VirtualCount = SelectArguments.TotalRowCount;
 898                                 }
 899                         }
 900
 901                         PagerSettings pagerSettings = PagerSettings;
 902                         bool showPager = AllowPaging && pagerSettings.Visible && (dataSource.PageCount > 1);
 903
 904                         Controls.Clear ();
 905                         table = CreateTable ();
 906                         Controls.Add (table);
 907                         headerRow = null;
 908                         footerRow = null;
 909                         topPagerRow = null;
 910                         bottomPagerRow = null;
 911
 912                         // Gets the current data item
 913
 914                         if (AllowPaging) {
 915                                 PageCount = dataSource.DataSourceCount;
 916                                 if (PageIndex >= PageCount && PageCount > 0) {
 917                                         pageIndex = dataSource.CurrentPageIndex = PageCount - 1;
 918                                 }
 919                                 if (dataSource.DataSource != null) {
 920                                         IEnumerator e = dataSource.GetEnumerator ();
 921                                         if (e.MoveNext ())
 922                                                 dataItem = e.Current;
 923                                 }
 924                         }
 925                         else {
 926                                 int page = 0;
 927                                 object lastItem = null;
 928                                 if (dataSource.DataSource != null) {
 929                                         IEnumerator e = dataSource.GetEnumerator ();
 930                                         for (; e.MoveNext (); page++) {
 931                                                 lastItem = e.Current;
 932                                                 if (page == PageIndex)
 933                                                         dataItem = e.Current;
 934                                         }
 935                                 }
 936                                 PageCount = page;
 937                                 if (PageIndex >= PageCount && PageCount > 0) {
 938                                         pageIndex = PageCount - 1;
 939                                         dataItem = lastItem;
 940                                 }
 941                         }
 942
 943                         // Main table creation
 944                         bool emptyRow = PageCount == 0 && CurrentMode != FormViewMode.Insert;
 945
 946                         if (!emptyRow) {
 947                                 headerRow = CreateRow (-1, DataControlRowType.Header, DataControlRowState.Normal);
 948                                 InitializeRow (headerRow);
 949                                 table.Rows.Add (headerRow);
 950                         }
 951
 952                         if (showPager && pagerSettings.Position == PagerPosition.Top || pagerSettings.Position == PagerPosition.TopAndBottom) {
 953                                 topPagerRow = CreateRow (-1, DataControlRowType.Pager, DataControlRowState.Normal);
 954                                 InitializePager (topPagerRow, dataSource);
 955                                 table.Rows.Add (topPagerRow);
 956                         }
 957
 958                         if (PageCount > 0) {
 959                                 DataControlRowState rstate = GetRowState ();
 960                                 itemRow = CreateRow (0, DataControlRowType.DataRow, rstate);
 961                                 InitializeRow (itemRow);
 962                                 table.Rows.Add (itemRow);
 963                         } else {
 964                                 switch (CurrentMode) {
 965                                 case FormViewMode.Edit:
 966                                         itemRow = CreateRow (-1, DataControlRowType.EmptyDataRow, DataControlRowState.Edit);
 967                                         break;
 968                                 case FormViewMode.Insert:
 969                                         itemRow = CreateRow (-1, DataControlRowType.DataRow, DataControlRowState.Insert);
 970                                         break;
 971                                 default:
 972                                         itemRow = CreateRow (-1, DataControlRowType.EmptyDataRow, DataControlRowState.Normal);
 973                                         break;
 974                                 }
 975                                 InitializeRow (itemRow);
 976                                 table.Rows.Add (itemRow);
 977                         }
 978
 979                         if (!emptyRow) {
 980                                 footerRow = CreateRow (-1, DataControlRowType.Footer, DataControlRowState.Normal);
 981                                 InitializeRow (footerRow);
 982                                 table.Rows.Add (footerRow);
 983                         }
 984
 985                         if (showPager && pagerSettings.Position == PagerPosition.Bottom || pagerSettings.Position == PagerPosition.TopAndBottom) {
 986                                 bottomPagerRow = CreateRow (0, DataControlRowType.Pager, DataControlRowState.Normal);
 987                                 InitializePager (bottomPagerRow, dataSource);
 988                                 table.Rows.Add (bottomPagerRow);
 989                         }
 990
 991                         OnItemCreated (EventArgs.Empty);
 992
 993                         if (dataBinding)
 994                                 DataBind (false);
 995
 996                         return PageCount;
 997                 }
 998
 999                 DataControlRowState GetRowState ()
1000                 {
1001                         DataControlRowState rstate = DataControlRowState.Normal;
1002                         if (CurrentMode == FormViewMode.Edit) rstate |= DataControlRowState.Edit;
1003                         else if (CurrentMode == FormViewMode.Insert) rstate |= DataControlRowState.Insert;
1004                         return rstate;
1005                 }
1006
1007                 protected virtual void InitializePager (FormViewRow row, PagedDataSource dataSource)
1008                 {
1009                         TableCell cell = new TableCell ();
1010                         cell.ColumnSpan = 2;
1011
1012                         if (pagerTemplate != null)
1013                                 pagerTemplate.InstantiateIn (cell);
1014                         else
1015                                 cell.Controls.Add (PagerSettings.CreatePagerControl (dataSource.CurrentPageIndex, dataSource.PageCount));
1016
1017                         row.Cells.Add (cell);
1018                 }
1019
1020                 protected virtual void InitializeRow (FormViewRow row)
1021                 {
1022                         TableCell cell = new TableCell ();
1023
1024                         if (row.RowType == DataControlRowType.DataRow)
1025                         {
1026                                 if ((row.RowState & DataControlRowState.Edit) != 0) {
1027                                         if (editItemTemplate != null)
1028                                                 editItemTemplate.InstantiateIn (cell);
1029                                         else
1030                                                 row.Visible = false;
1031                                 } else if ((row.RowState & DataControlRowState.Insert) != 0) {
1032                                         if (insertItemTemplate != null)
1033                                                 insertItemTemplate.InstantiateIn (cell);
1034                                         else
1035                                                 row.Visible = false;
1036                                 }
1037                                 else if (itemTemplate != null)
1038                                         itemTemplate.InstantiateIn (cell);
1039                                 else
1040                                         row.Visible = false;
1041                         }
1042                         else if (row.RowType == DataControlRowType.EmptyDataRow)
1043                         {
1044                                 if (emptyDataTemplate != null)
1045                                         emptyDataTemplate.InstantiateIn (cell);
1046                                 else if (!String.IsNullOrEmpty (EmptyDataText))
1047                                         cell.Text = EmptyDataText;
1048                                 else
1049                                         row.Visible = false;
1050                         }
1051                         else if (row.RowType == DataControlRowType.Footer)
1052                         {
1053                                 if (footerTemplate != null)
1054                                         footerTemplate.InstantiateIn (cell);
1055                                 else if (!String.IsNullOrEmpty (FooterText))
1056                                         cell.Text = FooterText;
1057                                 else
1058                                         row.Visible = false;
1059                         }
1060                         else if (row.RowType == DataControlRowType.Header)
1061                         {
1062                                 if (headerTemplate != null)
1063                                         headerTemplate.InstantiateIn (cell);
1064                                 else if (!String.IsNullOrEmpty (HeaderText))
1065                                         cell.Text = HeaderText;
1066                                 else
1067                                         row.Visible = false;
1068                         }
1069                         cell.ColumnSpan = 2;
1070                         row.Cells.Add (cell);
1071                 }
1072
1073                 void FillRowDataKey (object dataItem)
1074                 {
1075                         KeyTable.Clear ();
1076
1077                         if (cachedKeyProperties == null) {
1078                                 PropertyDescriptorCollection props = TypeDescriptor.GetProperties (dataItem);
1079                                 cachedKeyProperties = new PropertyDescriptor [DataKeyNames.Length];
1080                                 for (int n=0; n<DataKeyNames.Length; n++) {
1081                                         PropertyDescriptor p = props.Find (DataKeyNames [n], true);
1082                                         if (p == null)
1083                                                 throw new InvalidOperationException ("Property '" + DataKeyNames[n] + "' not found in object of type " + dataItem.GetType());
1084                                         cachedKeyProperties [n] = p;
1085                                 }
1086                         }
1087                         foreach (PropertyDescriptor p in cachedKeyProperties)
1088                                 KeyTable [p.Name] = p.GetValue (dataItem);
1089                 }
1090
1091                 IOrderedDictionary GetRowValues (bool includePrimaryKey)
1092                 {
1093                         OrderedDictionary dic = new OrderedDictionary ();
1094                         ExtractRowValues (dic, includePrimaryKey);
1095                         return dic;
1096                 }
1097
1098                 protected virtual void ExtractRowValues (IOrderedDictionary fieldValues, bool includeKeys)
1099                 {
1100                         if (Row == null)
1101                                 return;
1102
1103                         DataControlRowState rowState = Row.RowState;
1104                         IBindableTemplate bt;
1105
1106                         if ((rowState & DataControlRowState.Insert) != 0)
1107                                 bt = insertItemTemplate as IBindableTemplate;
1108                         else if ((rowState & DataControlRowState.Edit) != 0)
1109                                 bt = editItemTemplate as IBindableTemplate;
1110                         else
1111                                 return;
1112
1113                         if (bt != null) {
1114                                 IOrderedDictionary values = bt.ExtractValues (Row.Cells [0]);
1115                                 if (values != null)
1116                                 foreach (DictionaryEntry e in values) {
1117                                         if (includeKeys || Array.IndexOf (DataKeyNames, e.Key) == -1)
1118                                                 fieldValues [e.Key] = e.Value;
1119                                 }
1120                         }
1121                 }
1122
1123                 protected override HtmlTextWriterTag TagKey {
1124                         get {
1125                                 return HtmlTextWriterTag.Table;
1126                         }
1127                 }
1128
1129                 public sealed override void DataBind ()
1130                 {
1131                         cachedKeyProperties = null;
1132                         base.DataBind ();
1133
1134                         if (pageCount > 0) {
1135                                 if (CurrentMode == FormViewMode.Edit)
1136                                         oldEditValues = new DataKey (GetRowValues (true));
1137                                 FillRowDataKey (dataItem);
1138                                 key = new DataKey (KeyTable);
1139                         }
1140                 }
1141
1142                 protected internal override void PerformDataBinding (IEnumerable data)
1143                 {
1144                         base.PerformDataBinding (data);
1145                 }
1146
1147                 protected internal virtual void PrepareControlHierarchy ()
1148                 {
1149                         if (table == null)
1150                                 return;
1151
1152                         table.Caption = Caption;
1153                         table.CaptionAlign = CaptionAlign;
1154
1155                         foreach (FormViewRow row in table.Rows) {
1156                                 switch (row.RowType) {
1157                                 case DataControlRowType.Header:
1158                                         if (headerStyle != null && !headerStyle.IsEmpty)
1159                                                 row.ControlStyle.CopyFrom (headerStyle);
1160                                         break;
1161                                 case DataControlRowType.Footer:
1162                                         if (footerStyle != null && !footerStyle.IsEmpty)
1163                                                 row.ControlStyle.CopyFrom (footerStyle);
1164                                         break;
1165                                 case DataControlRowType.Pager:
1166                                         if (pagerStyle != null && !pagerStyle.IsEmpty)
1167                                                 row.ControlStyle.CopyFrom (pagerStyle);
1168                                         break;
1169                                 case DataControlRowType.EmptyDataRow:
1170                                         if (emptyDataRowStyle != null && !emptyDataRowStyle.IsEmpty)
1171                                                 row.ControlStyle.CopyFrom (emptyDataRowStyle);
1172                                         break;
1173                                 case DataControlRowType.DataRow:
1174                                         if (rowStyle != null && !rowStyle.IsEmpty)
1175                                                 row.ControlStyle.CopyFrom (rowStyle);
1176                                         if ((row.RowState & (DataControlRowState.Edit | DataControlRowState.Insert)) != 0 && editRowStyle != null && !editRowStyle.IsEmpty)
1177                                                 row.ControlStyle.CopyFrom (editRowStyle);
1178                                         if ((row.RowState & DataControlRowState.Insert) != 0 && insertRowStyle != null && !insertRowStyle.IsEmpty)
1179                                                 row.ControlStyle.CopyFrom (insertRowStyle);
1180                                         break;
1181                                 default:
1182                                         break;
1183                                 }
1184                         }
1185                 }
1186
1187                 protected internal override void OnInit (EventArgs e)
1188                 {
1189                         Page.RegisterRequiresControlState (this);
1190                         base.OnInit (e);
1191                 }
1192
1193                 protected override bool OnBubbleEvent (object source, EventArgs e)
1194                 {
1195                         FormViewCommandEventArgs args = e as FormViewCommandEventArgs;
1196                         if (args != null) {
1197                                 bool causesValidation = false;
1198                                 IButtonControl button = args.CommandSource as IButtonControl;
1199                                 if (button != null && button.CausesValidation) {
1200                                         Page.Validate (button.ValidationGroup);
1201                                         causesValidation = true;
1202                                 }
1203                                 ProcessCommand (args, causesValidation);
1204                                 return true;
1205                         }
1206                         return base.OnBubbleEvent (source, e);
1207                 }
1208
1209                 void ProcessCommand (FormViewCommandEventArgs args, bool causesValidation)
1210                 {
1211                         OnItemCommand (args);
1212                         ProcessEvent (args.CommandName, args.CommandArgument as string, causesValidation);
1213                 }
1214
1215                 void IPostBackEventHandler.RaisePostBackEvent (string eventArgument)
1216                 {
1217                         RaisePostBackEvent (eventArgument);
1218                 }
1219
1220                 protected virtual void RaisePostBackEvent (string eventArgument)
1221                 {
1222                         int i = eventArgument.IndexOf ('$');
1223                         CommandEventArgs arg;
1224                         if (i != -1)
1225                                 arg = new CommandEventArgs (eventArgument.Substring (0, i), eventArgument.Substring (i + 1));
1226                         else
1227                                 arg = new CommandEventArgs (eventArgument, null);
1228                         ProcessCommand (new FormViewCommandEventArgs (this, arg), false);
1229                 }
1230
1231                 void ProcessEvent (string eventName, string param, bool causesValidation)
1232                 {
1233                         switch (eventName)
1234                         {
1235                         case DataControlCommands.PageCommandName:
1236                                 int newIndex = -1;
1237                                 switch (param) {
1238                                 case DataControlCommands.FirstPageCommandArgument:
1239                                         newIndex = 0;
1240                                         break;
1241                                 case DataControlCommands.LastPageCommandArgument:
1242                                         newIndex = PageCount - 1;
1243                                         break;
1244                                 case DataControlCommands.NextPageCommandArgument:
1245                                         newIndex = PageIndex + 1;
1246                                         break;
1247                                 case DataControlCommands.PreviousPageCommandArgument:
1248                                         newIndex = PageIndex - 1;
1249                                         break;
1250                                 default:
1251                                         int paramIndex = 0;
1252                                         int.TryParse (param, out paramIndex);
1253                                         newIndex = paramIndex - 1;
1254                                         break;
1255                                 }
1256                                 ShowPage (newIndex);
1257                                 break;
1258
1259                         case DataControlCommands.FirstPageCommandArgument:
1260                                 ShowPage (0);
1261                                 break;
1262
1263                         case DataControlCommands.LastPageCommandArgument:
1264                                 ShowPage (PageCount - 1);
1265                                 break;
1266
1267                         case DataControlCommands.NextPageCommandArgument:
1268                                 if (PageIndex < PageCount - 1)
1269                                         ShowPage (PageIndex + 1);
1270                                 break;
1271
1272                         case DataControlCommands.PreviousPageCommandArgument:
1273                                 if (PageIndex > 0)
1274                                         ShowPage (PageIndex - 1);
1275                                 break;
1276
1277                         case DataControlCommands.EditCommandName:
1278                                 ProcessChangeMode (FormViewMode.Edit, false);
1279                                 break;
1280
1281                         case DataControlCommands.NewCommandName:
1282                                 ProcessChangeMode (FormViewMode.Insert, false);
1283                                 break;
1284
1285                         case DataControlCommands.UpdateCommandName:
1286                                 UpdateItem (param, causesValidation);
1287                                 break;
1288
1289                         case DataControlCommands.CancelCommandName:
1290                                 CancelEdit ();
1291                                 break;
1292
1293                         case DataControlCommands.DeleteCommandName:
1294                                 DeleteItem ();
1295                                 break;
1296
1297                         case DataControlCommands.InsertCommandName:
1298                                 InsertItem (causesValidation);
1299                                 break;
1300                         }
1301                 }
1302
1303                 void ShowPage (int index)
1304                 {
1305                         FormViewPageEventArgs args = new FormViewPageEventArgs (index);
1306                         OnPageIndexChanging (args);
1307
1308                         if (args.Cancel || !IsBoundUsingDataSourceID)
1309                                 return;
1310
1311                         int newIndex = args.NewPageIndex;
1312                         if (newIndex < 0 || newIndex >= PageCount)
1313                                 return;
1314                         EndRowEdit (false, false);
1315                         PageIndex = newIndex;
1316                         OnPageIndexChanged (EventArgs.Empty);
1317                 }
1318
1319                 public void ChangeMode (FormViewMode newMode)
1320                 {
1321                         if (CurrentMode == newMode)
1322                                 return;
1323                         CurrentMode = newMode;
1324                         RequireBinding ();
1325                 }
1326
1327                 void ProcessChangeMode (FormViewMode newMode, bool cancelingEdit)
1328                 {
1329                         FormViewModeEventArgs args = new FormViewModeEventArgs (newMode, cancelingEdit);
1330                         OnModeChanging (args);
1331
1332                         if (args.Cancel || !IsBoundUsingDataSourceID)
1333                                 return;
1334
1335                         ChangeMode (args.NewMode);
1336
1337                         OnModeChanged (EventArgs.Empty);
1338                 }
1339
1340                 void CancelEdit ()
1341                 {
1342                         EndRowEdit (true, true);
1343                 }
1344
1345                 public virtual void UpdateItem (bool causesValidation)
1346                 {
1347                         UpdateItem (null, causesValidation);
1348                 }
1349
1350                 void UpdateItem (string param, bool causesValidation)
1351                 {
1352                         if (causesValidation && Page != null && !Page.IsValid)
1353                                 return;
1354
1355                         if (currentMode != FormViewMode.Edit) throw new HttpException ("Must be in Edit mode");
1356
1357                         currentEditOldValues = OldEditValues.Values;
1358                         currentEditRowKeys = DataKey.Values;
1359                         currentEditNewValues = GetRowValues (false);
1360
1361                         FormViewUpdateEventArgs args = new FormViewUpdateEventArgs (param, currentEditRowKeys, currentEditOldValues, currentEditNewValues);
1362                         OnItemUpdating (args);
1363
1364                         if (args.Cancel || !IsBoundUsingDataSourceID)
1365                                 return;
1366
1367                         DataSourceView view = GetData ();
1368                         if (view == null)
1369                                 throw new HttpException ("The DataSourceView associated to data bound control was null");
1370                         view.Update (currentEditRowKeys, currentEditNewValues, currentEditOldValues, new DataSourceViewOperationCallback (UpdateCallback));
1371                 }
1372
1373                 bool UpdateCallback (int recordsAffected, Exception exception)
1374                 {
1375                         FormViewUpdatedEventArgs dargs = new FormViewUpdatedEventArgs (recordsAffected, exception, currentEditRowKeys, currentEditOldValues, currentEditNewValues);
1376                         OnItemUpdated (dargs);
1377
1378                         if (!dargs.KeepInEditMode)
1379                                 EndRowEdit (true, false);
1380
1381                         return dargs.ExceptionHandled;
1382                 }
1383
1384                 public virtual void InsertItem (bool causesValidation)
1385                 {
1386                         InsertItem (null, causesValidation);
1387                 }
1388
1389                 void InsertItem (string param, bool causesValidation)
1390                 {
1391                         if (causesValidation && Page != null && !Page.IsValid)
1392                                 return;
1393
1394                         if (currentMode != FormViewMode.Insert) throw new HttpException ("Must be in Insert mode");
1395
1396                         currentEditNewValues = GetRowValues (true);
1397                         FormViewInsertEventArgs args = new FormViewInsertEventArgs (param, currentEditNewValues);
1398                         OnItemInserting (args);
1399
1400                         if (args.Cancel || !IsBoundUsingDataSourceID)
1401                                 return;
1402
1403                         DataSourceView view = GetData ();
1404                         if (view == null)
1405                                 throw new HttpException ("The DataSourceView associated to data bound control was null");
1406                         view.Insert (currentEditNewValues, new DataSourceViewOperationCallback (InsertCallback));
1407                 }
1408
1409                 bool InsertCallback (int recordsAffected, Exception exception)
1410                 {
1411                         FormViewInsertedEventArgs dargs = new FormViewInsertedEventArgs (recordsAffected, exception, currentEditNewValues);
1412                         OnItemInserted (dargs);
1413
1414                         if (!dargs.KeepInInsertMode)
1415                                 EndRowEdit (true, false);
1416
1417                         return dargs.ExceptionHandled;
1418                 }
1419
1420                 public virtual void DeleteItem ()
1421                 {
1422                         currentEditRowKeys = DataKey.Values;
1423                         currentEditNewValues = GetRowValues (true);
1424
1425                         FormViewDeleteEventArgs args = new FormViewDeleteEventArgs (PageIndex, currentEditRowKeys, currentEditNewValues);
1426                         OnItemDeleting (args);
1427
1428                         if (args.Cancel || !IsBoundUsingDataSourceID)
1429                                 return;
1430
1431                         if (PageIndex > 0 && PageIndex == PageCount - 1)
1432                                 PageIndex--;
1433
1434                         RequireBinding ();
1435
1436                         DataSourceView view = GetData ();
1437                         if (view != null)
1438                                 view.Delete (currentEditRowKeys, currentEditNewValues, new DataSourceViewOperationCallback (DeleteCallback));
1439                         else {
1440                                 FormViewDeletedEventArgs dargs = new FormViewDeletedEventArgs (0, null, currentEditRowKeys, currentEditNewValues);
1441                                 OnItemDeleted (dargs);
1442                         }
1443                 }
1444
1445                 bool DeleteCallback (int recordsAffected, Exception exception)
1446                 {
1447                         FormViewDeletedEventArgs dargs = new FormViewDeletedEventArgs (recordsAffected, exception, currentEditRowKeys, currentEditNewValues);
1448                         OnItemDeleted (dargs);
1449                         return dargs.ExceptionHandled;
1450                 }
1451
1452                 void EndRowEdit (bool switchToDefaultMode, bool cancelingEdit)
1453                 {
1454                         if (switchToDefaultMode)
1455                                 ProcessChangeMode (DefaultMode, cancelingEdit);
1456                         oldEditValues = new DataKey (new OrderedDictionary ());
1457                         currentEditRowKeys = null;
1458                         currentEditOldValues = null;
1459                         currentEditNewValues = null;
1460                         RequireBinding ();
1461                 }
1462
1463                 protected internal override void LoadControlState (object ob)
1464                 {
1465                         if (ob == null) return;
1466                         object[] state = (object[]) ob;
1467                         base.LoadControlState (state[0]);
1468                         pageIndex = (int) state[1];
1469                         pageCount = (int) state[2];
1470                         CurrentMode = (FormViewMode) state[3];
1471                         defaultMode = (FormViewMode) state[4];
1472                         dataKeyNames = (string[]) state[5];
1473                         if (state [6] != null)
1474                                 ((IStateManager) DataKey).LoadViewState (state [6]);
1475                         if (state [7] != null)
1476                                 ((IStateManager) OldEditValues).LoadViewState (state [7]);
1477                 }
1478
1479                 protected internal override object SaveControlState ()
1480                 {
1481                         object bstate = base.SaveControlState ();
1482                         return new object [] {
1483                                 bstate,
1484                                 pageIndex,
1485                                 pageCount,
1486                                 CurrentMode,
1487                                 defaultMode,
1488                                 dataKeyNames,
1489                                 (key == null ? null : ((IStateManager)key).SaveViewState()),
1490                                 (oldEditValues == null ? null : ((IStateManager) oldEditValues).SaveViewState ())
1491                         };
1492                 }
1493
1494                 protected override void TrackViewState()
1495                 {
1496                         base.TrackViewState();
1497                         if (pagerSettings != null) ((IStateManager)pagerSettings).TrackViewState();
1498                         if (footerStyle != null) ((IStateManager)footerStyle).TrackViewState();
1499                         if (headerStyle != null) ((IStateManager)headerStyle).TrackViewState();
1500                         if (pagerStyle != null) ((IStateManager)pagerStyle).TrackViewState();
1501                         if (rowStyle != null) ((IStateManager)rowStyle).TrackViewState();
1502                         if (editRowStyle != null) ((IStateManager)editRowStyle).TrackViewState();
1503                         if (insertRowStyle != null) ((IStateManager)insertRowStyle).TrackViewState();
1504                         if (emptyDataRowStyle != null) ((IStateManager)emptyDataRowStyle).TrackViewState();
1505                 }
1506
1507                 protected override object SaveViewState()
1508                 {
1509                         object[] states = new object [10];
1510                         states[0] = base.SaveViewState();
1511                         states[1] = (pagerSettings == null ? null : ((IStateManager)pagerSettings).SaveViewState());
1512                         states[2] = (footerStyle == null ? null : ((IStateManager)footerStyle).SaveViewState());
1513                         states[3] = (headerStyle == null ? null : ((IStateManager)headerStyle).SaveViewState());
1514                         states[4] = (pagerStyle == null ? null : ((IStateManager)pagerStyle).SaveViewState());
1515                         states[5] = (rowStyle == null ? null : ((IStateManager)rowStyle).SaveViewState());
1516                         states[6] = (insertRowStyle == null ? null : ((IStateManager)insertRowStyle).SaveViewState());
1517                         states[7] = (editRowStyle == null ? null : ((IStateManager)editRowStyle).SaveViewState());
1518                         states[8] = (emptyDataRowStyle == null ? null : ((IStateManager)emptyDataRowStyle).SaveViewState());
1519
1520                         for (int i = states.Length - 1; i >= 0; i--) {
1521                                 if (states [i] != null)
1522                                         return states;
1523                         }
1524
1525                         return null;
1526                 }
1527
1528                 protected override void LoadViewState (object savedState)
1529                 {
1530                         if (savedState == null) {
1531                                 base.LoadViewState (null);
1532                                 return;
1533                         }
1534
1535                         object [] states = (object []) savedState;
1536
1537                         base.LoadViewState (states[0]);
1538
1539                         if (states[1] != null) ((IStateManager)PagerSettings).LoadViewState (states[1]);
1540                         if (states[2] != null) ((IStateManager)FooterStyle).LoadViewState (states[2]);
1541                         if (states[3] != null) ((IStateManager)HeaderStyle).LoadViewState (states[3]);
1542                         if (states[4] != null) ((IStateManager)PagerStyle).LoadViewState (states[4]);
1543                         if (states[5] != null) ((IStateManager)RowStyle).LoadViewState (states[5]);
1544                         if (states[6] != null) ((IStateManager)InsertRowStyle).LoadViewState (states[6]);
1545                         if (states[7] != null) ((IStateManager)EditRowStyle).LoadViewState (states[7]);
1546                         if (states[8] != null) ((IStateManager)EmptyDataRowStyle).LoadViewState (states[8]);
1547                 }
1548
1549                 protected internal override void Render (HtmlTextWriter writer)
1550                 {
1551                         PrepareControlHierarchy ();
1552
1553                         if (table == null)
1554                                 return;
1555
1556                         table.Render (writer);
1557                 }
1558
1559                 PostBackOptions IPostBackContainer.GetPostBackOptions (IButtonControl control)
1560                 {
1561                         if (control == null)
1562                                 throw new ArgumentNullException ("control");
1563
1564                         if (control.CausesValidation)
1565                                 throw new InvalidOperationException ("A button that causes validation in FormView '" + ID + "' is attempting to use the container GridView as the post back target.  The button should either turn off validation or use itself as the post back container.");
1566
1567                         PostBackOptions options = new PostBackOptions (this);
1568                         options.Argument = control.CommandName + "$" + control.CommandArgument;
1569                         options.RequiresJavaScriptProtocol = true;
1570
1571                         return options;
1572                 }
1573
1574         }
1575 }
1576
1577 #endif