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

   1 //
   2 // System.Web.UI.WebControls.DataList.cs
   3 //
   4 // Authors:
   5 //   Gaurav Vaish (gvaish@iitk.ac.in)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) Gaurav Vaish (2002)
   9 // (C) 2003 Andreas Nahr
  10 //
  11
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.ComponentModel;
  36 using System.ComponentModel.Design;
  37 using System.Web;
  38 using System.Web.UI;
  39 using System.Web.Util;
  40
  41 namespace System.Web.UI.WebControls
  42 {
  43         [Designer("System.Web.UI.Design.WebControls.DataListDesigner, " + Consts.AssemblySystem_Design, typeof (IDesigner))]
  44         [Editor ("System.Web.UI.Design.WebControls.DataListComponentEditor, " + Consts.AssemblySystem_Design, typeof (ComponentEditor))]
  45         public class DataList: BaseDataList, INamingContainer, IRepeatInfoUser
  46         {
  47                 public const string CancelCommandName = "Cancel";
  48                 public const string DeleteCommandName = "Delete";
  49                 public const string EditCommandName   = "Edit";
  50                 public const string SelectCommandName = "Select";
  51                 public const string UpdateCommandName = "Update";
  52
  53                 static readonly object CancelCommandEvent = new object ();
  54                 static readonly object DeleteCommandEvent = new object ();
  55                 static readonly object EditCommandEvent   = new object ();
  56                 static readonly object ItemCommandEvent   = new object ();
  57                 static readonly object ItemCreatedEvent   = new object ();
  58                 static readonly object ItemDataBoundEvent = new object ();
  59                 static readonly object UpdateCommandEvent = new object ();
  60
  61                 TableItemStyle alternatingItemStyle;
  62                 TableItemStyle editItemStyle;
  63                 TableItemStyle footerStyle;
  64                 TableItemStyle headerStyle;
  65                 TableItemStyle itemStyle;
  66                 TableItemStyle selectedItemStyle;
  67                 TableItemStyle separatorStyle;
  68
  69                 ITemplate alternatingItemTemplate;
  70                 ITemplate editItemTemplate;
  71                 ITemplate footerTemplate;
  72                 ITemplate headerTemplate;
  73                 ITemplate itemTemplate;
  74                 ITemplate selectedItemTemplate;
  75                 ITemplate separatorTemplate;
  76
  77                 ArrayList itemsArray;
  78                 DataListItemCollection items;
  79
  80                 bool extractTemplateRows;
  81
  82                 public DataList ()
  83                 {
  84                 }
  85
  86                 [DefaultValue (null)]
  87                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
  88                 [NotifyParentProperty (true)]
  89                 [WebCategory ("Style")]
  90                 [PersistenceMode (PersistenceMode.InnerProperty)]
  91                 [WebSysDescription ("The style applied to alternating items.")]
  92                 public virtual TableItemStyle AlternatingItemStyle {
  93                         get {
  94                                 if (alternatingItemStyle == null) {
  95                                         alternatingItemStyle = new TableItemStyle ();
  96                                         if (IsTrackingViewState)
  97                                                 alternatingItemStyle.TrackViewState ();
  98                                 }
  99
 100                                 return alternatingItemStyle;
 101                         }
 102                 }
 103
 104                 [Browsable (false)]
 105                 [DefaultValue (null)]
 106                 [TemplateContainer (typeof (DataListItem))]
 107                 [PersistenceMode (PersistenceMode.InnerProperty)]
 108                 [WebSysDescription ("The template used for alternating items.")]
 109                 public virtual ITemplate AlternatingItemTemplate {
 110                         get { return alternatingItemTemplate; }
 111                         set { alternatingItemTemplate = value; }
 112                 }
 113
 114                 [DefaultValue (-1)]
 115                 [WebCategory ("Misc")]
 116                 [WebSysDescription ("The index of the item shown in edit mode.")]
 117                 public virtual int EditItemIndex {
 118                         get {
 119                                 object o = ViewState ["EditItemIndex"];
 120                                 if (o != null)
 121                                         return (int) o;
 122
 123                                 return -1;
 124                         }
 125
 126                         set {
 127                                 if (value < -1)
 128                                          throw new ArgumentOutOfRangeException("value");
 129
 130                                 ViewState ["EditItemIndex"] = value;
 131                         }
 132                 }
 133
 134                 [DefaultValue (null)]
 135                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 136                 [NotifyParentProperty (true)]
 137                 [WebCategory ("Style")]
 138                 [PersistenceMode (PersistenceMode.InnerProperty)]
 139                 [WebSysDescription ("The style applied to items in edit mode.")]
 140                 public virtual TableItemStyle EditItemStyle {
 141                         get {
 142                                 if (editItemStyle == null) {
 143                                         editItemStyle = new TableItemStyle ();
 144                                         if (IsTrackingViewState)
 145                                                 editItemStyle.TrackViewState ();
 146                                 }
 147
 148                                 return editItemStyle;
 149                         }
 150                 }
 151
 152                 [Browsable (false)]
 153                 [DefaultValue (null)]
 154                 [TemplateContainer (typeof (DataListItem))]
 155                 [PersistenceMode (PersistenceMode.InnerProperty)]
 156                 [WebSysDescription ("The template used for items in edit mode.")]
 157                 public virtual ITemplate EditItemTemplate {
 158                         get { return editItemTemplate; }
 159                         set { editItemTemplate = value; }
 160                 }
 161
 162
 163                 [DefaultValue (false), WebCategory ("Misc")]
 164                 [WebSysDescription ("Extract rows in the template.")]
 165                 public virtual bool ExtractTemplateRows {
 166                         get {
 167                                 object o = ViewState ["ExtractTemplateRows"];
 168                                 if (o != null)
 169                                         return (bool) o;
 170
 171                                 return false;
 172                         }
 173
 174                         set { ViewState ["ExtractTemplateRows"] = value; }
 175                 }
 176
 177                 [DefaultValue (null)]
 178                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 179                 [NotifyParentProperty (true)]
 180                 [WebCategory ("Style")]
 181                 [PersistenceMode (PersistenceMode.InnerProperty)]
 182                 [WebSysDescription ("The style applied to the footer.")]
 183                 public virtual TableItemStyle FooterStyle {
 184                         get {
 185                                 if (footerStyle == null) {
 186                                         footerStyle = new TableItemStyle ();
 187                                         if (IsTrackingViewState)
 188                                                 footerStyle.TrackViewState ();
 189                                 }
 190
 191                                 return footerStyle;
 192                         }
 193                 }
 194
 195                 [Browsable (false)]
 196                 [DefaultValue (null)]
 197                 [TemplateContainer (typeof (DataListItem))]
 198                 [PersistenceMode (PersistenceMode.InnerProperty)]
 199                 [WebSysDescription ("The template used for the footer.")]
 200                 public virtual ITemplate FooterTemplate {
 201                         get { return footerTemplate; }
 202                         set { footerTemplate = value; }
 203                 }
 204
 205                 [DefaultValue (typeof (GridLines), "None")]
 206                 public override GridLines GridLines {
 207                         get { return base.GridLines; }
 208                         set { base.GridLines = value; }
 209                 }
 210
 211                 [DefaultValue (null)]
 212                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 213                 [NotifyParentProperty (true)]
 214                 [WebCategory ("Style")]
 215                 [PersistenceMode (PersistenceMode.InnerProperty)]
 216                 [WebSysDescription ("The style applied to the header.")]
 217                 public virtual TableItemStyle HeaderStyle {
 218                         get {
 219                                 if (headerStyle == null) {
 220                                         headerStyle = new TableItemStyle ();
 221                                         if (IsTrackingViewState)
 222                                                 headerStyle.TrackViewState ();
 223                                 }
 224
 225                                 return headerStyle;
 226                         }
 227                 }
 228
 229                 [Browsable (false)]
 230                 [DefaultValue (null)]
 231                 [TemplateContainer (typeof (DataListItem))]
 232                 [PersistenceMode (PersistenceMode.InnerProperty)]
 233                 [WebSysDescription ("The template used for the header.")]
 234                 public virtual ITemplate HeaderTemplate {
 235                         get { return headerTemplate; }
 236                         set { headerTemplate = value; }
 237                 }
 238
 239                 [Browsable (false)]
 240                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 241                 [WebSysDescription ("A colletion containing all items.")]
 242                 public virtual DataListItemCollection Items {
 243                         get {
 244                                 if (items == null) {
 245                                         if (itemsArray == null) {
 246                                                 EnsureChildControls ();
 247                                                 itemsArray = new ArrayList ();
 248                                         }
 249                                         items = new DataListItemCollection (itemsArray);
 250                                 }
 251
 252                                 return items;
 253                         }
 254                 }
 255
 256                 [DefaultValue (null)]
 257                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 258                 [NotifyParentProperty (true)]
 259                 [WebCategory ("Style")]
 260                 [PersistenceMode (PersistenceMode.InnerProperty)]
 261                 [WebSysDescription ("The style applied to items.")]
 262                 public virtual TableItemStyle ItemStyle {
 263                         get {
 264                                 if (itemStyle == null) {
 265                                         itemStyle = new TableItemStyle ();
 266                                         if (IsTrackingViewState)
 267                                                 itemStyle.TrackViewState ();
 268                                 }
 269
 270                                 return itemStyle;
 271                         }
 272                 }
 273
 274                 [Browsable (false)]
 275                 [DefaultValue (null)]
 276                 [TemplateContainer (typeof (DataListItem))]
 277                 [PersistenceMode (PersistenceMode.InnerProperty)]
 278                 [WebSysDescription ("The template used for items.")]
 279                 public virtual ITemplate ItemTemplate {
 280                         get { return itemTemplate; }
 281                         set { itemTemplate = value; }
 282                 }
 283
 284
 285                 [DefaultValue (0), Bindable (true), WebCategory ("Layout")]
 286                 [WebSysDescription ("The number of columns that should be used.")]
 287                 public virtual int RepeatColumns {
 288                         get {
 289                                 object o = ViewState ["RepeatColumns"];
 290                                 if (o != null)
 291                                         return (int) o;
 292
 293                                 return 0;
 294                         }
 295                         set {
 296                                 if (value < 0)
 297                                         throw new ArgumentOutOfRangeException ("value", "RepeatColumns value has to be 0 for 'not set' or > 0.");
 298
 299                                 ViewState ["RepeatColumns"] = value;
 300                         }
 301                 }
 302
 303                 [DefaultValue (typeof (RepeatDirection), "Vertical"), Bindable (true), WebCategory ("Layout")]
 304                 [WebSysDescription ("Which direction should be used when filling the columns.")]
 305                 public virtual RepeatDirection RepeatDirection {
 306                         get {
 307                                 object o = ViewState ["RepeatDirection"];
 308                                 if (o != null)
 309                                         return (RepeatDirection) o;
 310
 311                                 return RepeatDirection.Vertical;
 312                         }
 313                         set {
 314                                 if (!Enum.IsDefined (typeof (RepeatDirection), value))
 315                                         throw new ArgumentOutOfRangeException ("value", "Only valid enumeration members are allowed");
 316
 317                                 ViewState ["RepeatDirection"] = value;
 318                         }
 319                 }
 320
 321                 [DefaultValue (typeof (RepeatLayout), "Table"), Bindable (true), WebCategory ("Layout")]
 322                 [WebSysDescription ("The type of layout - mechanism that is used.")]
 323                 public virtual RepeatLayout RepeatLayout {
 324                         get {
 325                                 object o = ViewState ["RepeatLayout"];
 326                                 if (o != null)
 327                                         return (RepeatLayout) o;
 328
 329                                 return RepeatLayout.Table;
 330                         }
 331                         set {
 332                                 if (!Enum.IsDefined (typeof (RepeatLayout), value))
 333                                         throw new ArgumentOutOfRangeException ("value", "Only valid enumeration members are allowed");
 334
 335                                 ViewState ["RepeatLayout"] = value;
 336                         }
 337                 }
 338
 339                 [DefaultValue (-1), Bindable (true)]
 340                 [WebSysDescription ("The currently selected item index number.")]
 341                 public virtual int SelectedIndex {
 342                         get {
 343                                 object o = ViewState ["SelectedIndex"];
 344                                 if (o != null)
 345                                         return (int) o;
 346
 347                                 return -1;
 348                         }
 349                         set {
 350                                 //FIXME: Looks like a bug in Microsoft's specs.
 351                                 // Exception is missing in document. I haven't tested the case
 352                                 // But I think exception should follow
 353                                 if (value < -1)
 354                                         throw new ArgumentOutOfRangeException("value");
 355
 356                                 int prevSel = SelectedIndex;
 357                                 ViewState ["SelectedIndex"] = value;
 358                                 DataListItem prevSelItem;
 359                                 ListItemType liType;
 360
 361                                 if (itemsArray != null) {
 362                                         if (prevSel >= 0 && prevSel < itemsArray.Count) {
 363                                                 prevSelItem = (DataListItem) itemsArray [prevSel];
 364                                                 if (prevSelItem.ItemType != ListItemType.EditItem) {
 365                                                         liType = ((prevSel % 2) == 0 ? ListItemType.AlternatingItem :
 366                                                                                        ListItemType.Item);
 367
 368                                                         prevSelItem.SetItemType (liType);
 369                                                 }
 370                                         }
 371
 372                                         if (value >= 0 && value < itemsArray.Count) {
 373                                                 prevSelItem = (DataListItem) itemsArray [value];
 374                                                 if (prevSelItem.ItemType != ListItemType.EditItem) {
 375                                                         prevSelItem.SetItemType (ListItemType.SelectedItem);
 376                                                 }
 377                                         }
 378                                 }
 379                         }
 380                 }
 381
 382                 [Browsable (false)]
 383                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 384                 [WebSysDescription ("The currently selected item.")]
 385                 public virtual DataListItem SelectedItem {
 386                         get {
 387                                 if (SelectedIndex == -1)
 388                                         return null;
 389
 390                                 return Items [SelectedIndex];
 391                         }
 392                 }
 393
 394                 [DefaultValue (null)]
 395                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 396                 [NotifyParentProperty (true)]
 397                 [WebCategory ("Style")]
 398                 [PersistenceMode (PersistenceMode.InnerProperty)]
 399                 [WebSysDescription ("The style used for the currently selected item.")]
 400                 public virtual TableItemStyle SelectedItemStyle {
 401                         get {
 402                                 if (selectedItemStyle == null) {
 403                                         selectedItemStyle = new TableItemStyle ();
 404                                         if (IsTrackingViewState)
 405                                                 selectedItemStyle.TrackViewState ();
 406                                 }
 407
 408                                 return selectedItemStyle;
 409                         }
 410                 }
 411
 412                 [Browsable (false)]
 413                 [DefaultValue (null)]
 414                 [TemplateContainer (typeof (DataListItem))]
 415                 [PersistenceMode (PersistenceMode.InnerProperty)]
 416                 [WebSysDescription ("The template used for currently selected items.")]
 417                 public virtual ITemplate SelectedItemTemplate {
 418                         get { return selectedItemTemplate; }
 419                         set { selectedItemTemplate = value; }
 420                 }
 421
 422                 [DefaultValue (null)]
 423                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 424                 [NotifyParentProperty (true)]
 425                 [WebCategory ("Style")]
 426                 [PersistenceMode (PersistenceMode.InnerProperty)]
 427                 [WebSysDescription ("The style applied to separators.")]
 428                 public virtual TableItemStyle SeparatorStyle {
 429                         get {
 430                                 if (separatorStyle == null) {
 431                                         separatorStyle = new TableItemStyle ();
 432                                         if (IsTrackingViewState)
 433                                                 separatorStyle.TrackViewState ();
 434                                 }
 435
 436                                 return separatorStyle;
 437                         }
 438                 }
 439
 440                 [Browsable (false)]
 441                 [DefaultValue (null)]
 442                 [TemplateContainer (typeof (DataListItem))]
 443                 [PersistenceMode (PersistenceMode.InnerProperty)]
 444                 [WebSysDescription ("The template used for separators.")]
 445                 public virtual ITemplate SeparatorTemplate {
 446                         get { return separatorTemplate; }
 447                         set { separatorTemplate = value; }
 448                 }
 449
 450                 [DefaultValue (true), Bindable (true), WebCategory ("Appearance")]
 451                 [WebSysDescription ("Display the header for the DataList.")]
 452                 public virtual bool ShowHeader {
 453                         get {
 454                                 object o = ViewState ["ShowHeader"];
 455                                 if (o != null)
 456                                         return (bool) o;
 457
 458                                 return true;
 459                         }
 460                         set { ViewState ["ShowHeader"] = value; }
 461                 }
 462
 463                 [DefaultValue (true), Bindable (true), WebCategory ("Appearance")]
 464                 [WebSysDescription ("Display the footer for the DataList.")]
 465                 public virtual bool ShowFooter {
 466                         get {
 467                                 object o = ViewState ["ShowFooter"];
 468                                 if (o != null)
 469                                         return (bool) o;
 470
 471                                 return true;
 472                         }
 473                         set
 474                         {
 475                                 ViewState["ShowFooter"] = value;
 476                         }
 477                 }
 478
 479                 [WebCategory ("Action")]
 480                 [WebSysDescription ("Raised when a cancel command is generated.")]
 481                 public event DataListCommandEventHandler CancelCommand {
 482                         add { Events.AddHandler (CancelCommandEvent, value); }
 483                         remove { Events.RemoveHandler (CancelCommandEvent, value); }
 484                 }
 485
 486                 [WebCategory ("Action")]
 487                 [WebSysDescription ("Raised when a delete command is generated.")]
 488                 public event DataListCommandEventHandler DeleteCommand {
 489                         add { Events.AddHandler (DeleteCommandEvent, value); }
 490                         remove { Events.RemoveHandler (DeleteCommandEvent, value); }
 491                 }
 492
 493                 [WebCategory ("Action")]
 494                 [WebSysDescription ("Raised when an edit command is generated.")]
 495                 public event DataListCommandEventHandler EditCommand {
 496                         add { Events.AddHandler (EditCommandEvent, value); }
 497                         remove { Events.RemoveHandler (EditCommandEvent, value); }
 498                 }
 499
 500                 [WebCategory ("Action")]
 501                 [WebSysDescription ("Raised when an item command is generated.")]
 502                 public event DataListCommandEventHandler ItemCommand {
 503                         add { Events.AddHandler (ItemCommandEvent, value); }
 504                         remove { Events.RemoveHandler (ItemCommandEvent, value); }
 505                 }
 506
 507                 [WebCategory ("Behavior")]
 508                 [WebSysDescription ("Raised when a new item is created.")]
 509                 public event DataListItemEventHandler ItemCreated {
 510                         add { Events.AddHandler (ItemCreatedEvent, value); }
 511                         remove { Events.RemoveHandler (ItemCreatedEvent, value); }
 512                 }
 513
 514                 [WebCategory ("Behavior")]
 515                 [WebSysDescription ("Raised when a item gets data-bound.")]
 516                 public event DataListItemEventHandler ItemDataBound {
 517                         add { Events.AddHandler (ItemDataBoundEvent, value); }
 518                         remove { Events.RemoveHandler (ItemDataBoundEvent, value); }
 519                 }
 520
 521                 [WebCategory ("Action")]
 522                 [WebSysDescription ("Raised when an update command is generated.")]
 523                 public event DataListCommandEventHandler UpdateCommand {
 524                         add { Events.AddHandler (UpdateCommandEvent, value); }
 525                         remove { Events.RemoveHandler (UpdateCommandEvent, value); }
 526                 }
 527
 528                 protected override Style CreateControlStyle ()
 529                 {
 530                         TableStyle retVal = new TableStyle (ViewState);
 531                         retVal.CellSpacing = 0;
 532                         return retVal;
 533                 }
 534
 535                 protected override void LoadViewState (object savedState)
 536                 {
 537                         if (savedState == null)
 538                                 return;
 539
 540                         object [] states = (object []) savedState;
 541
 542                         if (states [0] != null)
 543                                 base.LoadViewState (states [0]);
 544                         if (states [1] != null)
 545                                 alternatingItemStyle.LoadViewState (states [1]);
 546                         if (states [2] != null)
 547                                 editItemStyle.LoadViewState (states [2]);
 548                         if (states [3] != null)
 549                                 footerStyle.LoadViewState (states [3]);
 550                         if (states [4] != null)
 551                                 headerStyle.LoadViewState (states [4]);
 552                         if (states [5] != null)
 553                                 itemStyle.LoadViewState (states [5]);
 554                         if (states [6] != null)
 555                                 selectedItemStyle.LoadViewState (states [6]);
 556                         if (states [7] != null)
 557                                 separatorStyle.LoadViewState (states [7]);
 558                 }
 559
 560                 protected override object SaveViewState()
 561                 {
 562                         object [] states = new object [8];
 563                         states [0] = base.SaveViewState ();
 564                         states [1] = (alternatingItemStyle == null ? null : alternatingItemStyle.SaveViewState ());
 565                         states [2] = (editItemStyle == null        ? null : editItemStyle.SaveViewState ());
 566                         states [3] = (footerStyle == null          ? null : footerStyle.SaveViewState ());
 567                         states [4] = (headerStyle == null          ? null : headerStyle.SaveViewState ());
 568                         states [5] = (itemStyle == null            ? null : itemStyle.SaveViewState ());
 569                         states [6] = (selectedItemStyle == null    ? null : selectedItemStyle.SaveViewState ());
 570                         states [7] = (separatorStyle == null       ? null : separatorStyle.SaveViewState ());
 571                         return states;
 572                 }
 573
 574                 protected override void TrackViewState ()
 575                 {
 576                         base.TrackViewState ();
 577                         if (alternatingItemStyle != null)
 578                                 alternatingItemStyle.TrackViewState ();
 579                         if (editItemStyle != null)
 580                                 editItemStyle.TrackViewState ();
 581                         if (footerStyle != null)
 582                                 footerStyle.TrackViewState ();
 583                         if (headerStyle != null)
 584                                 headerStyle.TrackViewState ();
 585                         if (itemStyle != null)
 586                                 itemStyle.TrackViewState ();
 587                         if (selectedItemStyle != null)
 588                                 selectedItemStyle.TrackViewState ();
 589                         if (separatorStyle != null)
 590                                 separatorStyle.TrackViewState ();
 591                 }
 592
 593                 protected override bool OnBubbleEvent (object source, EventArgs e)
 594                 {
 595                         if (!(e is DataListCommandEventArgs))
 596                                 return false;
 597
 598                         DataListCommandEventArgs args = (DataListCommandEventArgs) e;
 599                         OnItemCommand (args);
 600                         string cmdName = args.CommandName.ToLower ();
 601
 602                         if (cmdName == "cancel") {
 603                                 OnCancelCommand (args);
 604                         } else if (cmdName == "delete") {
 605                                 OnDeleteCommand (args);
 606                         } else if (cmdName == "edit") {
 607                                 OnEditCommand (args);
 608                         } else if (cmdName == "select") {
 609                                 SelectedIndex = args.Item.ItemIndex;
 610                                 OnSelectedIndexChanged (EventArgs.Empty);
 611                         } else if (cmdName == "update") {
 612                                 OnUpdateCommand (args);
 613                         }
 614
 615                         return true;
 616                 }
 617
 618                 void InvokeCommandEvent (DataListCommandEventArgs args, object key)
 619                 {
 620                         DataListCommandEventHandler dlceh = (DataListCommandEventHandler) Events [key];
 621                         if (dlceh != null)
 622                                 dlceh (this, args);
 623                 }
 624
 625                 void InvokeItemEvent (DataListItemEventArgs args, object key)
 626                 {
 627                         DataListItemEventHandler dlieh = (DataListItemEventHandler) Events [key];
 628                         if (dlieh != null)
 629                                 dlieh (this, args);
 630                 }
 631
 632                 protected virtual void OnCancelCommand (DataListCommandEventArgs e)
 633                 {
 634                         InvokeCommandEvent (e, CancelCommandEvent);
 635                 }
 636
 637                 protected virtual void OnDeleteCommand (DataListCommandEventArgs e)
 638                 {
 639                         InvokeCommandEvent (e, DeleteCommandEvent);
 640                 }
 641
 642                 protected virtual void OnEditCommand (DataListCommandEventArgs e)
 643                 {
 644                         InvokeCommandEvent (e, EditCommandEvent);
 645                 }
 646
 647                 protected virtual void OnItemCommand (DataListCommandEventArgs e)
 648                 {
 649                         InvokeCommandEvent (e, ItemCommandEvent);
 650                 }
 651
 652                 protected virtual void OnItemCreated (DataListItemEventArgs e)
 653                 {
 654                         InvokeItemEvent (e, ItemCreatedEvent);
 655                 }
 656
 657                 protected virtual void OnItemDataBound (DataListItemEventArgs e)
 658                 {
 659                         InvokeItemEvent (e, ItemDataBoundEvent);
 660                 }
 661
 662                 protected virtual void OnUpdateCommand (DataListCommandEventArgs e)
 663                 {
 664                         InvokeCommandEvent (e, UpdateCommandEvent);
 665                 }
 666
 667                 protected override void RenderContents (HtmlTextWriter writer)
 668                 {
 669                         if (Controls.Count == 0)
 670                                 return;
 671
 672                         RepeatInfo repeater = new RepeatInfo ();
 673                         Table templateTable = null;
 674                         if (extractTemplateRows) {
 675                                 repeater.RepeatDirection = RepeatDirection.Vertical;
 676                                 repeater.RepeatLayout  = RepeatLayout.Flow;
 677                                 repeater.RepeatColumns = 1;
 678                                 repeater.OuterTableImplied = true;
 679
 680                                 templateTable = new Table ();
 681                                 templateTable.ID = ClientID;
 682                                 templateTable.CopyBaseAttributes (this);
 683                                 templateTable.ApplyStyle (ControlStyle);
 684                                 templateTable.RenderBeginTag (writer);
 685                         } else {
 686                                 repeater.RepeatDirection = RepeatDirection;
 687                                 repeater.RepeatLayout = RepeatLayout;
 688                                 repeater.RepeatColumns = RepeatColumns;
 689                         }
 690
 691                         repeater.RenderRepeater (writer, this, ControlStyle, this);
 692                         if (templateTable != null) {
 693                                 templateTable.RenderEndTag (writer);
 694                         }
 695                 }
 696
 697                 private DataListItem GetItem (ListItemType itemType, int repeatIndex)
 698                 {
 699                         DataListItem retVal = null;
 700                         switch (itemType) {
 701                         case ListItemType.Header:
 702                                 retVal = (DataListItem) Controls [0];
 703                                 break;
 704                         case ListItemType.Footer:
 705                                 retVal = (DataListItem) Controls [Controls.Count - 1];
 706                                 break;
 707                         case ListItemType.Item:
 708                                 goto case ListItemType.EditItem;
 709                         case ListItemType.AlternatingItem:
 710                                 goto case ListItemType.EditItem;
 711                         case ListItemType.SelectedItem:
 712                                 goto case ListItemType.EditItem;
 713                         case ListItemType.EditItem:
 714                                 retVal = (DataListItem) itemsArray [repeatIndex];
 715                                 break;
 716                         case ListItemType.Separator:
 717                                 int index = 2 * repeatIndex + 1;
 718                                 if (headerTemplate != null)
 719                                         index ++;
 720                                 retVal = (DataListItem) Controls [index];
 721                                 break;
 722                         }
 723                         return retVal;
 724                 }
 725
 726                 /// <summary>
 727                 /// Undocumented
 728                 /// </summary>
 729                 protected override void CreateControlHierarchy (bool useDataSource)
 730                 {
 731                         IEnumerable source = null;
 732                         ArrayList dkeys = DataKeysArray;
 733
 734                         if (itemsArray != null) {
 735                                 itemsArray.Clear ();
 736                         } else {
 737                                 itemsArray = new ArrayList ();
 738                         }
 739
 740                         extractTemplateRows = ExtractTemplateRows;
 741                         if (!useDataSource) {
 742                                 int count = (int) ViewState ["_!ItemCount"];
 743                                 if (count != -1) {
 744                                         source = new DataSourceInternal (count);
 745                                         itemsArray.Capacity = count;
 746                                 }
 747                         } else {
 748                                 dkeys.Clear ();
 749                                 source = GetResolvedDataSource ();
 750                                 if (source is ICollection) {
 751                                         dkeys.Capacity = ((ICollection) source).Count;
 752                                         itemsArray.Capacity = ((ICollection) source).Count;
 753                                 }
 754                         }
 755
 756                         int itemCount = 0;
 757                         if (source != null) {
 758                                 int index = 0;
 759                                 int editIndex = EditItemIndex;
 760                                 int selIndex = SelectedIndex;
 761                                 string dataKey = DataKeyField;
 762
 763                                 if (headerTemplate != null)
 764                                         CreateItem (-1, ListItemType.Header, useDataSource, null);
 765
 766                                 foreach (object current in source) {
 767                                         if (useDataSource) {
 768                                                 try {
 769                                                         dkeys.Add (DataBinder.GetPropertyValue (current, dataKey));
 770                                                 } catch {
 771                                                         dkeys.Add (dkeys.Count);
 772                                                 }
 773                                         }
 774
 775                                         ListItemType type = ListItemType.Item;
 776                                         if (index == editIndex) {
 777                                                 type = ListItemType.EditItem;
 778                                         } else if (index == selIndex) {
 779                                                 type = ListItemType.SelectedItem;
 780                                         } else if ((index % 2) != 0) {
 781                                                 type = ListItemType.AlternatingItem;
 782                                         }
 783
 784                                         itemsArray.Add (CreateItem (index, type, useDataSource, current));
 785                                         if (separatorTemplate != null)
 786                                                 CreateItem (index, ListItemType.Separator, useDataSource, null);
 787                                         itemCount++;
 788                                         index++;
 789                                 }
 790
 791                                 if (footerTemplate != null)
 792                                         CreateItem (-1, ListItemType.Footer, useDataSource, null);
 793                         }
 794
 795                         if (useDataSource)
 796                                 ViewState ["_!ItemCount"] = (source != null ? itemCount : -1);
 797                 }
 798
 799                 /// <summary>
 800                 /// Undocumented
 801                 /// </summary>
 802                 protected virtual DataListItem CreateItem (int itemIndex, ListItemType itemType)
 803                 {
 804                         return new DataListItem (itemIndex, itemType);
 805                 }
 806
 807                 private DataListItem CreateItem (int itemIndex, ListItemType itemType, bool dataBind, object dataItem)
 808                 {
 809                         DataListItem retVal = CreateItem (itemIndex, itemType);
 810                         DataListItemEventArgs e = new DataListItemEventArgs (retVal);
 811                         InitializeItem (retVal);
 812                         if (dataBind)
 813                                 retVal.DataItem = dataItem;
 814
 815                         OnItemCreated (e);
 816                         Controls.Add (retVal);
 817
 818                         if (dataBind) {
 819                                 retVal.DataBind ();
 820                                 OnItemDataBound (e);
 821                                 retVal.DataItem = null;
 822                         }
 823
 824                         return retVal;
 825                 }
 826
 827                 /// <summary>
 828                 /// Undocumented
 829                 /// </summary>
 830                 protected override void PrepareControlHierarchy ()
 831                 {
 832                         if (Controls.Count == 0)
 833                                 return;
 834
 835                         Style defaultStyle = null;
 836                         Style rowStyle = null;
 837
 838                         if (alternatingItemStyle != null) {
 839                                 defaultStyle = new TableItemStyle ();
 840                                 defaultStyle.CopyFrom (itemStyle);
 841                                 defaultStyle.CopyFrom (alternatingItemStyle);
 842                         } else {
 843                                 defaultStyle = itemStyle;
 844                         }
 845
 846                         foreach (DataListItem current in Controls) {
 847                                 rowStyle = null;
 848                                 switch (current.ItemType) {
 849                                 case ListItemType.Header:
 850                                         if (headerStyle != null)
 851                                                 rowStyle = headerStyle;
 852                                         break;
 853                                 case ListItemType.Footer:
 854                                         if (footerStyle != null)
 855                                                 rowStyle = footerStyle;
 856                                         break;
 857                                 case ListItemType.Separator:
 858                                         rowStyle = separatorStyle;
 859                                         break;
 860                                 case ListItemType.Item:
 861                                         rowStyle = itemStyle;
 862                                         break;
 863                                 case ListItemType.AlternatingItem:
 864                                         rowStyle = defaultStyle;
 865                                         break;
 866                                 case ListItemType.SelectedItem:
 867                                         rowStyle = new TableItemStyle ();
 868                                         if ((current.ItemIndex % 2) == 0) {
 869                                                 rowStyle.CopyFrom (itemStyle);
 870                                         } else {
 871                                                 rowStyle.CopyFrom (defaultStyle);
 872                                         }
 873                                         rowStyle.CopyFrom (selectedItemStyle);
 874                                         break;
 875                                 case ListItemType.EditItem:
 876                                         rowStyle = new TableItemStyle ();
 877                                         if ((current.ItemIndex % 2) == 0) {
 878                                                 rowStyle.CopyFrom (itemStyle);
 879                                         } else {
 880                                                 rowStyle.CopyFrom (defaultStyle);
 881                                         }
 882
 883                                         if (current.ItemIndex == SelectedIndex)
 884                                                 rowStyle.CopyFrom (selectedItemStyle);
 885
 886                                         rowStyle.CopyFrom (editItemStyle);
 887                                         break;
 888                                 }
 889
 890                                 if (rowStyle == null)
 891                                         continue;
 892
 893                                 if (!extractTemplateRows) {
 894                                         current.MergeStyle (rowStyle);
 895                                         continue;
 896                                 }
 897
 898                                 if (current.HasControls ()) {
 899                                         int len = current.Controls.Count;
 900                                         for (int i = 0 ; i < len ; i++) {
 901                                                 Control currentCtrl = current.Controls [i];
 902                                                 if (!(currentCtrl is Table))
 903                                                         continue;
 904
 905                                                 foreach (TableRow cRow in ((Table) currentCtrl).Rows)
 906                                                         cRow.MergeStyle (rowStyle);
 907                                         }
 908                                 }
 909                         }
 910                 }
 911
 912                 /// <summary>
 913                 /// Undocumented
 914                 /// </summary>
 915                 protected virtual void InitializeItem (DataListItem item)
 916                 {
 917                         ListItemType type = item.ItemType;
 918                         ITemplate template = itemTemplate;
 919
 920                         switch (type) {
 921                         case ListItemType.Header:
 922                                 template = headerTemplate;
 923                                 break;
 924                         case ListItemType.Footer:
 925                                 template = footerTemplate;
 926                                 break;
 927                         case ListItemType.AlternatingItem:
 928                                 if (alternatingItemTemplate != null)
 929                                         template = alternatingItemTemplate;
 930                                 break;
 931                         case ListItemType.SelectedItem:
 932                                 if (selectedItemTemplate != null) {
 933                                         template = selectedItemTemplate;
 934                                         break;
 935                                 }
 936
 937                                 if ((item.ItemIndex % 2) != 0)
 938                                         goto case ListItemType.AlternatingItem;
 939                                 break;
 940                         case ListItemType.EditItem:
 941                                 if (editItemTemplate != null) {
 942                                         template = editItemTemplate;
 943                                         break;
 944                                 }
 945
 946                                 if (item.ItemIndex == SelectedIndex)
 947                                         goto case ListItemType.SelectedItem;
 948
 949                                 if ((item.ItemIndex % 2) != 0)
 950                                         goto case ListItemType.AlternatingItem;
 951                                 break;
 952                         case ListItemType.Separator:
 953                                 template = separatorTemplate;
 954                                 break;
 955                         }
 956
 957                         if (template != null)
 958                                 template.InstantiateIn (item);
 959                 }
 960
 961                 bool IRepeatInfoUser.HasFooter {
 962                         get { return (ShowFooter && footerTemplate != null); }
 963                 }
 964
 965                 bool IRepeatInfoUser.HasHeader {
 966                         get { return (ShowHeader && headerTemplate != null); }
 967                 }
 968
 969                 bool IRepeatInfoUser.HasSeparators {
 970                         get { return (separatorTemplate != null); }
 971                 }
 972
 973                 int IRepeatInfoUser.RepeatedItemCount {
 974                         get {
 975                                 if (itemsArray != null)
 976                                         return itemsArray.Count;
 977
 978                                 return 0;
 979                         }
 980                 }
 981
 982                 void IRepeatInfoUser.RenderItem (ListItemType itemType,
 983                                                  int repeatIndex,
 984                                                  RepeatInfo repeatInfo,
 985                                                  HtmlTextWriter writer)
 986                 {
 987                         DataListItem item = GetItem (itemType, repeatIndex);
 988                         if (item != null)
 989                                 item.RenderItem (writer,
 990                                                  extractTemplateRows,
 991                                                  (repeatInfo.RepeatLayout == RepeatLayout.Table));
 992                 }
 993
 994                 Style IRepeatInfoUser.GetItemStyle (ListItemType itemType, int repeatIndex)
 995                 {
 996                         DataListItem item = GetItem (itemType, repeatIndex);
 997                         if (item == null || !item.ControlStyleCreated)
 998                                 return null;
 999
1000                         return item.ControlStyle;
1001                 }
1002         }
1003 }
1004