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

   1 //
   2 // System.Web.UI.WebControls.DataList.cs
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (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 using System.Collections;
  30 using System.ComponentModel;
  31 using System.Globalization;
  32 using System.Security.Permissions;
  33 using System.Web.Util;
  34
  35 namespace System.Web.UI.WebControls {
  36
  37         // CAS
  38         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  39         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  40         // attributes
  41         [Designer ("System.Web.UI.Design.WebControls.DataListDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  42 #if NET_2_0
  43         [ControlValueProperty ("SelectedValue")]
  44         [Editor ("System.Web.UI.Design.WebControls.DataListComponentEditor, " + Consts.AssemblySystem_Design, "System.ComponentModel.ComponentEditor, " + Consts.AssemblySystem)]
  45 #else
  46         [Editor ("System.Web.UI.Design.WebControls.DataListComponentEditor, " + Consts.AssemblySystem_Design, typeof (System.ComponentModel.ComponentEditor))]
  47 #endif
  48         public class DataList : BaseDataList, INamingContainer, IRepeatInfoUser {
  49
  50                 public const string CancelCommandName = "Cancel";
  51                 public const string DeleteCommandName = "Delete";
  52                 public const string EditCommandName = "Edit";
  53                 public const string SelectCommandName = "Select";
  54                 public const string UpdateCommandName = "Update";
  55
  56
  57                 private static readonly object cancelCommandEvent = new object ();
  58                 private static readonly object deleteCommandEvent = new object ();
  59                 private static readonly object editCommandEvent = new object ();
  60                 private static readonly object itemCommandEvent = new object ();
  61                 private static readonly object itemCreatedEvent = new object ();
  62                 private static readonly object itemDataBoundEvent = new object ();
  63                 private static readonly object updateCommandEvent = new object ();
  64
  65                 private TableItemStyle alternatingItemStyle;
  66                 private TableItemStyle editItemStyle;
  67                 private TableItemStyle footerStyle;
  68                 private TableItemStyle headerStyle;
  69                 private TableItemStyle itemStyle;
  70                 private TableItemStyle selectedItemStyle;
  71                 private TableItemStyle separatorStyle;
  72
  73                 private ITemplate alternatingItemTemplate;
  74                 private ITemplate editItemTemplate;
  75                 private ITemplate footerTemplate;
  76                 private ITemplate headerTemplate;
  77                 private ITemplate itemTemplate;
  78                 private ITemplate selectedItemTemplate;
  79                 private ITemplate separatorTemplate;
  80
  81                 private DataListItemCollection items;
  82                 private ArrayList list;
  83                 private int idx;
  84
  85 #if NET_2_0
  86                 //private int editIndex;
  87                 private int selectedIndex;
  88
  89                 public DataList ()
  90                 {
  91                         //editIndex = -1;
  92                         selectedIndex = -1;
  93                         idx = -1;
  94                 }
  95 #else
  96                 public DataList ()
  97                 {
  98                         idx = -1;
  99                 }
 100 #endif
 101
 102
 103                 [DefaultValue (null)]
 104                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 105                 [NotifyParentProperty (true)]
 106                 [PersistenceMode (PersistenceMode.InnerProperty)]
 107                 [WebSysDescription ("")]
 108                 [WebCategory ("Style")]
 109                 public virtual TableItemStyle AlternatingItemStyle {
 110                         get {
 111                                 if (alternatingItemStyle == null) {
 112                                         alternatingItemStyle = new TableItemStyle ();
 113                                         if (IsTrackingViewState) {
 114                                                 alternatingItemStyle.TrackViewState ();
 115                                         }
 116                                 }
 117                                 return alternatingItemStyle;
 118                         }
 119                 }
 120
 121                 [Browsable (false)]
 122                 [DefaultValue (null)]
 123                 [TemplateContainer (typeof (DataListItem))]
 124                 [PersistenceMode (PersistenceMode.InnerProperty)]
 125                 [WebSysDescription ("")]
 126                 [WebCategory ("Style")]
 127                 public virtual ITemplate AlternatingItemTemplate {
 128                         get { return alternatingItemTemplate; }
 129                         set { alternatingItemTemplate = value; }
 130                 }
 131
 132                 [DefaultValue (-1)]
 133                 [WebSysDescription ("")]
 134                 [WebCategory ("Misc")]
 135                 public virtual int EditItemIndex {
 136                         get {
 137                                 object o = ViewState ["EditItemIndex"];
 138                                 return (o == null) ? -1 : (int) o;
 139                         }
 140                         set {
 141                                 if (value < -1)
 142                                         throw new ArgumentOutOfRangeException ("EditItemIndex", "< -1");
 143                                 ViewState ["EditItemIndex"] = value;
 144                         }
 145                 }
 146
 147                 [DefaultValue (null)]
 148                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 149                 [NotifyParentProperty (true)]
 150                 [PersistenceMode (PersistenceMode.InnerProperty)]
 151                 [WebSysDescription ("")]
 152                 [WebCategory ("Style")]
 153                 public virtual TableItemStyle EditItemStyle {
 154                         get {
 155                                 if (editItemStyle == null) {
 156                                         editItemStyle = new TableItemStyle ();
 157                                         if (IsTrackingViewState) {
 158                                                 editItemStyle.TrackViewState ();
 159                                         }
 160                                 }
 161                                 return editItemStyle;
 162                         }
 163                 }
 164
 165                 [Browsable (false)]
 166                 [DefaultValue (null)]
 167                 [TemplateContainer (typeof (DataListItem))]
 168                 [PersistenceMode (PersistenceMode.InnerProperty)]
 169                 [WebSysDescription ("")]
 170                 [WebCategory ("Style")]
 171                 public virtual ITemplate EditItemTemplate {
 172                         get { return editItemTemplate; }
 173                         set { editItemTemplate = value; }
 174                 }
 175
 176                 [DefaultValue (false)]
 177                 [WebSysDescription ("")]
 178                 [WebCategory ("Misc")]
 179                 public virtual bool ExtractTemplateRows {
 180                         get {
 181                                 object o = ViewState ["ExtractTemplateRows"];
 182                                 return (o == null) ? false : (bool) o;
 183                         }
 184                         set { ViewState ["ExtractTemplateRows"] = value; }
 185                 }
 186
 187                 [DefaultValue (null)]
 188                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 189                 [NotifyParentProperty (true)]
 190                 [PersistenceMode (PersistenceMode.InnerProperty)]
 191                 [WebSysDescription ("")]
 192                 [WebCategory ("Style")]
 193                 public virtual TableItemStyle FooterStyle {
 194                         get {
 195                                 if (footerStyle == null) {
 196                                         footerStyle = new TableItemStyle ();
 197                                         if (IsTrackingViewState) {
 198                                                 footerStyle.TrackViewState ();
 199                                         }
 200                                 }
 201                                 return footerStyle;
 202                         }
 203                 }
 204
 205                 [Browsable (false)]
 206                 [DefaultValue (null)]
 207                 [TemplateContainer (typeof (DataListItem))]
 208                 [PersistenceMode (PersistenceMode.InnerProperty)]
 209                 [WebSysDescription ("")]
 210                 [WebCategory ("Style")]
 211                 public virtual ITemplate FooterTemplate {
 212                         get { return footerTemplate; }
 213                         set { footerTemplate = value; }
 214                 }
 215
 216                 // yes! they do NOT match in fx1.1
 217                 [DefaultValue (GridLines.None)]
 218                 public override GridLines GridLines {
 219                         get {
 220                                 if (!ControlStyleCreated) {
 221 #if NET_2_0
 222                                         return GridLines.None;
 223 #else
 224                                         return GridLines.Both;
 225 #endif
 226                                 }
 227                                 return TableStyle.GridLines;
 228                         }
 229                         set { TableStyle.GridLines = value; }
 230                 }
 231
 232                 [DefaultValue (null)]
 233                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 234                 [NotifyParentProperty (true)]
 235                 [PersistenceMode (PersistenceMode.InnerProperty)]
 236                 [WebSysDescription ("")]
 237                 [WebCategory ("Style")]
 238                 public virtual TableItemStyle HeaderStyle {
 239                         get {
 240                                 if (headerStyle == null) {
 241                                         headerStyle = new TableItemStyle ();
 242                                         if (IsTrackingViewState) {
 243                                                 headerStyle.TrackViewState ();
 244                                         }
 245                                 }
 246                                 return headerStyle;
 247                         }
 248                 }
 249
 250                 [Browsable (false)]
 251                 [DefaultValue (null)]
 252                 [TemplateContainer (typeof (DataListItem))]
 253                 [PersistenceMode (PersistenceMode.InnerProperty)]
 254                 [WebSysDescription ("")]
 255                 [WebCategory ("Style")]
 256                 public virtual ITemplate HeaderTemplate {
 257                         get { return headerTemplate; }
 258                         set { headerTemplate = value; }
 259                 }
 260
 261                 [Browsable (false)]
 262                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 263                 [WebSysDescription ("")]
 264                 [WebCategory ("Style")]
 265                 public virtual DataListItemCollection Items {
 266                         get {
 267                                 if (items == null)
 268                                         items = new DataListItemCollection (ItemList);
 269                                 return items;
 270                         }
 271                 }
 272
 273                 [DefaultValue (null)]
 274                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 275                 [NotifyParentProperty (true)]
 276                 [PersistenceMode (PersistenceMode.InnerProperty)]
 277                 [WebSysDescription ("")]
 278                 [WebCategory ("Style")]
 279                 public virtual TableItemStyle ItemStyle {
 280                         get {
 281                                 if (itemStyle == null) {
 282                                         itemStyle = new TableItemStyle ();
 283                                         if (IsTrackingViewState) {
 284                                                 itemStyle.TrackViewState ();
 285                                         }
 286                                 }
 287                                 return itemStyle;
 288                         }
 289                 }
 290
 291                 [Browsable (false)]
 292                 [DefaultValue (null)]
 293                 [TemplateContainer (typeof (DataListItem))]
 294                 [PersistenceMode (PersistenceMode.InnerProperty)]
 295                 [WebSysDescription ("")]
 296                 [WebCategory ("Style")]
 297                 public virtual ITemplate ItemTemplate {
 298                         get { return itemTemplate; }
 299                         set { itemTemplate = value; }
 300                 }
 301
 302 #if ONLY_1_1
 303                 [Bindable (true)]
 304 #endif
 305                 [DefaultValue (0)]
 306                 [WebSysDescription ("")]
 307                 [WebCategory ("Layout")]
 308                 public virtual int RepeatColumns {
 309                         get {
 310                                 object o = ViewState ["RepeatColumns"];
 311                                 return (o == null) ? 0 : (int) o;
 312                         }
 313                         set {
 314                                 if (value < 0)
 315                                         throw new ArgumentOutOfRangeException ("value", "RepeatColumns value has to be 0 for 'not set' or > 0.");
 316
 317                                 ViewState ["RepeatColumns"] = value;
 318                         }
 319                 }
 320
 321 #if ONLY_1_1
 322                 [Bindable (true)]
 323 #endif
 324                 [DefaultValue (RepeatDirection.Vertical)]
 325                 [WebSysDescription ("")]
 326                 [WebCategory ("Layout")]
 327                 public virtual RepeatDirection RepeatDirection {
 328                         get {
 329                                 object o = ViewState ["RepeatDirection"];
 330                                 return (o == null) ? RepeatDirection.Vertical : (RepeatDirection) o;
 331                         }
 332                         set { ViewState ["RepeatDirection"] = value; }
 333                 }
 334
 335 #if ONLY_1_1
 336                 [Bindable (true)]
 337 #endif
 338                 [DefaultValue (RepeatLayout.Table)]
 339                 [WebSysDescription ("")]
 340                 [WebCategory ("Layout")]
 341                 public virtual RepeatLayout RepeatLayout {
 342                         get {
 343                                 object o = ViewState ["RepeatLayout"];
 344                                 return (o == null) ? RepeatLayout.Table : (RepeatLayout) o;
 345                         }
 346                         set { ViewState ["RepeatLayout"] = value; }
 347                 }
 348
 349                 [Bindable (true)]
 350                 [DefaultValue (-1)]
 351                 [WebSysDescription ("")]
 352                 [WebCategory ("Layout")]
 353                 public virtual int SelectedIndex {
 354                         get {
 355                                 object o = ViewState ["SelectedIndex"];
 356                                 return (o == null) ? -1 : (int) o;
 357                         }
 358                         set {
 359                                 if (value < -1)
 360                                         throw new ArgumentOutOfRangeException ("SelectedIndex", "< -1");
 361                                 ViewState ["SelectedIndex"] = value;
 362                         }
 363                 }
 364
 365                 [Browsable (false)]
 366                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 367                 [WebSysDescription ("")]
 368                 [WebCategory ("Layout")]
 369                 public virtual DataListItem SelectedItem {
 370                         get {
 371                                 if (SelectedIndex < 0)
 372                                         return null;
 373                                 if (SelectedIndex >= Items.Count)
 374                                         throw new ArgumentOutOfRangeException ("SelectedItem", ">= Items.Count");
 375                                 return items [SelectedIndex];
 376                         }
 377                 }
 378
 379                 [DefaultValue (null)]
 380                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 381                 [NotifyParentProperty (true)]
 382                 [PersistenceMode (PersistenceMode.InnerProperty)]
 383                 [WebSysDescription ("")]
 384                 [WebCategory ("Style")]
 385                 public virtual TableItemStyle SelectedItemStyle {
 386                         get {
 387                                 if (selectedItemStyle == null) {
 388                                         selectedItemStyle = new TableItemStyle ();
 389                                         if (IsTrackingViewState) {
 390                                                 selectedItemStyle.TrackViewState ();
 391                                         }
 392                                 }
 393                                 return selectedItemStyle;
 394                         }
 395                 }
 396
 397                 [Browsable (false)]
 398                 [DefaultValue (null)]
 399                 [TemplateContainer (typeof (DataListItem))]
 400                 [PersistenceMode (PersistenceMode.InnerProperty)]
 401                 [WebSysDescription ("")]
 402                 [WebCategory ("Style")]
 403                 public virtual ITemplate SelectedItemTemplate {
 404                         get { return selectedItemTemplate; }
 405                         set { selectedItemTemplate = value; }
 406                 }
 407
 408                 [DefaultValue (null)]
 409                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
 410                 [NotifyParentProperty (true)]
 411                 [PersistenceMode (PersistenceMode.InnerProperty)]
 412                 [WebSysDescription ("")]
 413                 [WebCategory ("Style")]
 414                 public virtual TableItemStyle SeparatorStyle {
 415                         get {
 416                                 if (separatorStyle == null) {
 417                                         separatorStyle = new TableItemStyle ();
 418                                         if (IsTrackingViewState) {
 419                                                 separatorStyle.TrackViewState ();
 420                                         }
 421                                 }
 422                                 return separatorStyle;
 423                         }
 424                 }
 425
 426                 [Browsable (false)]
 427                 [DefaultValue (null)]
 428                 [TemplateContainer (typeof (DataListItem))]
 429                 [PersistenceMode (PersistenceMode.InnerProperty)]
 430                 [WebSysDescription ("")]
 431                 [WebCategory ("Style")]
 432                 public virtual ITemplate SeparatorTemplate {
 433                         get { return separatorTemplate; }
 434                         set { separatorTemplate = value; }
 435                 }
 436
 437 #if ONLY_1_1
 438                 [Bindable (true)]
 439 #endif
 440                 [DefaultValue (true)]
 441                 [WebSysDescription ("")]
 442                 [WebCategory ("Appearance")]
 443                 public virtual bool ShowFooter {
 444                         get {
 445                                 object o = ViewState ["ShowFooter"];
 446                                 return (o == null) ? true : (bool) o;
 447                         }
 448                         set { ViewState ["ShowFooter"] = value; }
 449                 }
 450
 451 #if ONLY_1_1
 452                 [Bindable (true)]
 453 #endif
 454                 [DefaultValue (true)]
 455                 [WebSysDescription ("")]
 456                 [WebCategory ("Appearance")]
 457                 public virtual bool ShowHeader {
 458                         get {
 459                                 object o = ViewState ["ShowHeader"];
 460                                 return (o == null) ? true : (bool) o;
 461                         }
 462                         set { ViewState ["ShowHeader"] = value; }
 463                 }
 464
 465 #if NET_2_0
 466                 [MonoTODO ("incomplete")]
 467                 [Browsable (false)]
 468                 public object SelectedValue {
 469                         get {
 470                                 if (DataKeyField.Length == 0)
 471                                         throw new InvalidOperationException (Locale.GetText ("No DataKeyField present."));
 472
 473                                 if ((SelectedIndex >= 0) && (selectedIndex < DataKeys.Count)) {
 474                                         return DataKeys [selectedIndex];
 475                                 }
 476
 477                                 return null;
 478                         }
 479                 }
 480
 481                 protected override HtmlTextWriterTag TagKey {
 482                         get { return HtmlTextWriterTag.Table; }
 483                 }
 484 #endif
 485
 486                 private TableStyle TableStyle {
 487                         // this will throw an InvalidCasException just like we need
 488                         get { return (TableStyle) ControlStyle; }
 489                 }
 490
 491                 private ArrayList ItemList {
 492                         get {
 493                                 if (list == null)
 494                                         list = new ArrayList ();
 495                                 return list;
 496                         }
 497                 }
 498
 499                 void DoItem (int i, ListItemType t, object d, bool databind)
 500                 {
 501                         DataListItem itm = CreateItem (i, t);
 502                         if (databind)
 503                                 itm.DataItem = d;
 504                         DataListItemEventArgs e = new DataListItemEventArgs (itm);
 505                         InitializeItem (itm);
 506
 507                         //
 508                         // It is very important that this be called *before* data
 509                         // binding. Otherwise, we won't save our state in the viewstate.
 510                         //
 511                         Controls.Add (itm);
 512                         if (i != -1)
 513                                 ItemList.Add (itm);
 514
 515                         OnItemCreated (e);
 516
 517                         if (databind) {
 518                                 itm.DataBind ();
 519                                 OnItemDataBound (e);
 520                                 itm.DataItem = null;
 521                         }
 522                 }
 523
 524                 private void DoItemInLoop (int i, object d, bool databind, ListItemType type)
 525                 {
 526                         DoItem (i, type, d, databind);
 527                         if (SeparatorTemplate != null)
 528                                 DoItem (i, ListItemType.Separator, null, databind);
 529
 530                 }
 531
 532                 protected override void CreateControlHierarchy (bool useDataSource)
 533                 {
 534                         Controls.Clear();
 535                         ItemList.Clear ();
 536
 537                         IEnumerable ds = null;
 538                         ArrayList keys = null;
 539
 540                         if (useDataSource) {
 541                                 idx = 0;
 542 #if NET_2_0
 543                                 if (IsBoundUsingDataSourceID)
 544                                         ds = GetData();
 545                                 else
 546 #endif
 547                                 ds = DataSourceResolver.ResolveDataSource (DataSource, DataMember);
 548                                 keys = DataKeysArray;
 549                                 keys.Clear ();
 550                         } else {
 551                                 idx = (int) ViewState ["Items"];
 552                         }
 553
 554                         if ((ds == null) && (idx == 0))
 555                                 return;
 556
 557                         if (headerTemplate != null)
 558                                 DoItem (-1, ListItemType.Header, null, useDataSource);
 559
 560                         // items
 561                         int selected_index = SelectedIndex;
 562                         int edit_item_index = EditItemIndex;
 563                         ListItemType type;
 564                         if (ds != null) {
 565                                 string key = DataKeyField;
 566                                 foreach (object o in ds) {
 567                                         if (useDataSource && key != "")
 568                                                 keys.Add (DataBinder.GetPropertyValue (o, key));
 569                                         type = ListItemType.Item;
 570                                         if (idx == edit_item_index)
 571                                                 type = ListItemType.EditItem;
 572                                         else if (idx == selected_index)
 573                                                 type = ListItemType.SelectedItem;
 574                                         else if ((idx & 1) != 0)
 575                                                 type = ListItemType.AlternatingItem;
 576
 577                                         DoItemInLoop (idx, o, useDataSource, type);
 578                                         idx++;
 579                                 }
 580                         } else {
 581                                 for (int i = 0; i < idx; i++) {
 582                                         type = ListItemType.Item;
 583                                         if (i == edit_item_index)
 584                                                 type = ListItemType.EditItem;
 585                                         else if (i == selected_index)
 586                                                 type = ListItemType.SelectedItem;
 587                                         else if ((i & 1) != 0)
 588                                                 type = ListItemType.AlternatingItem;
 589
 590                                         DoItemInLoop (i, null, useDataSource, type);
 591                                 }
 592                         }
 593
 594                         if (footerTemplate != null)
 595                                 DoItem (-1, ListItemType.Footer, null, useDataSource);
 596
 597                         ViewState ["Items"] = idx;
 598                 }
 599
 600                 protected override Style CreateControlStyle ()
 601                 {
 602 #if NET_2_0
 603                         // not kept (directly) in the DataList ViewState
 604                         TableStyle tableStyle = new TableStyle ();
 605 #else
 606                         TableStyle tableStyle = new TableStyle (ViewState);
 607 #endif
 608                         tableStyle.CellSpacing = 0;
 609                         return tableStyle;
 610                 }
 611
 612                 protected virtual DataListItem CreateItem (int itemIndex, ListItemType itemType)
 613                 {
 614                         return new DataListItem (itemIndex, itemType);
 615                 }
 616
 617                 protected virtual void InitializeItem (DataListItem item)
 618                 {
 619                         ITemplate t = null;
 620
 621                         switch (item.ItemType) {
 622                         case ListItemType.Header:
 623                                 t = HeaderTemplate;
 624                                 break;
 625                         case ListItemType.Footer:
 626                                 t = FooterTemplate;
 627                                 break;
 628                         case ListItemType.Separator:
 629                                 t = SeparatorTemplate;
 630                                 break;
 631                         case ListItemType.Item:
 632                         case ListItemType.AlternatingItem:
 633                         case ListItemType.SelectedItem:
 634                         case ListItemType.EditItem:
 635                                 int index = item.ItemIndex;
 636                                 if ((item.ItemType == ListItemType.EditItem) && (EditItemTemplate != null))
 637                                         t = EditItemTemplate;
 638                                 else if ((item.ItemType == ListItemType.SelectedItem) && (SelectedItemTemplate != null))
 639                                         t = SelectedItemTemplate;
 640                                 else if ((item.ItemType == ListItemType.AlternatingItem) && (AlternatingItemTemplate != null))
 641                                         t = AlternatingItemTemplate;
 642                                 else
 643                                         t = ItemTemplate;
 644                                 break;
 645                         }
 646
 647                         if (t != null)
 648                                 t.InstantiateIn (item);
 649                 }
 650
 651                 protected override void LoadViewState (object savedState)
 652                 {
 653                         object[] state = (object[]) savedState;
 654                         base.LoadViewState (state [0]);
 655                         if (state [1] != null)
 656                                 ItemStyle.LoadViewState (state [1]);
 657                         if (state [2] != null)
 658                                 SelectedItemStyle.LoadViewState (state [2]);
 659                         if (state [3] != null)
 660                                 AlternatingItemStyle.LoadViewState (state [3]);
 661                         if (state [4] != null)
 662                                 EditItemStyle.LoadViewState (state [4]);
 663                         if (state [5] != null)
 664                                 SeparatorStyle.LoadViewState (state [5]);
 665                         if (state [6] != null)
 666                                 HeaderStyle.LoadViewState (state [6]);
 667                         if (state [7] != null)
 668                                 FooterStyle.LoadViewState (state [7]);
 669 #if NET_2_0
 670                         if (state [8] != null)
 671                                 ControlStyle.LoadViewState (state [8]);
 672 #endif
 673                 }
 674
 675                 protected override bool OnBubbleEvent (object source, EventArgs e)
 676                 {
 677                         DataListCommandEventArgs dlca = (e as DataListCommandEventArgs);
 678                         if (dlca == null)
 679                                 return false;
 680
 681                         string cn = dlca.CommandName;
 682                         CultureInfo inv = CultureInfo.InvariantCulture;
 683
 684                         OnItemCommand (dlca);
 685                         if (String.Compare (cn, CancelCommandName, true, inv) == 0) {
 686                                 OnCancelCommand (dlca);
 687                         } else if (String.Compare (cn, DeleteCommandName, true, inv) == 0) {
 688                                 OnDeleteCommand (dlca);
 689                         } else if (String.Compare (cn, EditCommandName, true, inv) == 0) {
 690                                 OnEditCommand (dlca);
 691                         } else if (String.Compare (cn, SelectCommandName, true, inv) == 0) {
 692                                 SelectedIndex = dlca.Item.ItemIndex;
 693                                 OnSelectedIndexChanged (dlca);
 694                         } else if (String.Compare (cn, UpdateCommandName, true, inv) == 0) {
 695                                 OnUpdateCommand (dlca);
 696                         }
 697                         return true;
 698                 }
 699
 700                 protected virtual void OnCancelCommand (DataListCommandEventArgs e)
 701                 {
 702                         DataListCommandEventHandler cancelCommand = (DataListCommandEventHandler) Events [cancelCommandEvent];
 703                         if (cancelCommand != null)
 704                                 cancelCommand (this, e);
 705                 }
 706
 707                 protected virtual void OnDeleteCommand (DataListCommandEventArgs e)
 708                 {
 709                         DataListCommandEventHandler deleteCommand = (DataListCommandEventHandler) Events [deleteCommandEvent];
 710                         if (deleteCommand != null)
 711                                 deleteCommand (this, e);
 712                 }
 713
 714                 protected virtual void OnEditCommand (DataListCommandEventArgs e)
 715                 {
 716                         DataListCommandEventHandler editCommand = (DataListCommandEventHandler) Events [editCommandEvent];
 717                         if (editCommand != null)
 718                                 editCommand (this, e);
 719                 }
 720 #if NET_2_0
 721                 protected internal override void OnInit (EventArgs e)
 722                 {
 723                         // EditItemIndex and SelectedIndex now use the Control State (i.e not the View State)
 724                         Page.RegisterRequiresControlState (this);
 725                         base.OnInit (e);
 726                 }
 727 #endif
 728                 protected virtual void OnItemCommand (DataListCommandEventArgs e)
 729                 {
 730                         DataListCommandEventHandler itemCommand = (DataListCommandEventHandler) Events [itemCommandEvent];
 731                         if (itemCommand != null)
 732                                 itemCommand (this, e);
 733                 }
 734
 735                 protected virtual void OnItemCreated (DataListItemEventArgs e)
 736                 {
 737                         DataListItemEventHandler itemCreated = (DataListItemEventHandler) Events [itemCreatedEvent];
 738                         if (itemCreated != null)
 739                                 itemCreated (this, e);
 740                 }
 741
 742                 protected virtual void OnItemDataBound (DataListItemEventArgs e)
 743                 {
 744                         DataListItemEventHandler itemDataBound = (DataListItemEventHandler) Events [itemDataBoundEvent];
 745                         if (itemDataBound != null)
 746                                 itemDataBound (this, e);
 747                 }
 748
 749                 protected virtual void OnUpdateCommand (DataListCommandEventArgs e)
 750                 {
 751                         DataListCommandEventHandler updateCommand = (DataListCommandEventHandler) Events [updateCommandEvent];
 752                         if (updateCommand != null)
 753                                 updateCommand (this, e);
 754                 }
 755
 756                 protected override void PrepareControlHierarchy ()
 757                 {
 758                         if (!HasControls () || Controls.Count == 0)
 759                                 return; // No one called CreateControlHierarchy() with DataSource != null
 760
 761                         Style alt = null;
 762                         foreach (DataListItem item in Controls) {
 763                                 switch (item.ItemType) {
 764                                 case ListItemType.Item:
 765                                         item.MergeStyle (itemStyle);
 766                                         break;
 767                                 case ListItemType.AlternatingItem:
 768                                         if (alt == null) {
 769                                                 if (alternatingItemStyle != null) {
 770                                                         alt = new TableItemStyle ();
 771                                                         alt.CopyFrom (itemStyle);
 772                                                         alt.CopyFrom (alternatingItemStyle);
 773                                                 } else {
 774                                                         alt = itemStyle;
 775                                                 }
 776                                         }
 777
 778                                         item.MergeStyle (alt);
 779                                         break;
 780                                 case ListItemType.EditItem:
 781                                         if (editItemStyle != null) {
 782                                                 item.MergeStyle (editItemStyle);
 783                                         } else {
 784                                                 item.MergeStyle (itemStyle);
 785                                         }
 786                                         break;
 787                                 case ListItemType.Footer:
 788                                         if (!ShowFooter) {
 789                                                 item.Visible = false;
 790                                                 break;
 791                                         }
 792                                         if (footerStyle != null) {
 793                                                 item.MergeStyle (footerStyle);
 794                                         }
 795                                         break;
 796                                 case ListItemType.Header:
 797                                         if (!ShowHeader) {
 798                                                 item.Visible = false;
 799                                                 break;
 800                                         }
 801                                         if (headerStyle != null) {
 802                                                 item.MergeStyle (headerStyle);
 803                                         }
 804                                         break;
 805                                 case ListItemType.SelectedItem:
 806                                         if (selectedItemStyle != null) {
 807                                                 item.MergeStyle (selectedItemStyle);
 808                                         } else {
 809                                                 item.MergeStyle (itemStyle);
 810                                         }
 811                                         break;
 812                                 case ListItemType.Separator:
 813                                         if (separatorStyle != null) {
 814                                                 item.MergeStyle(separatorStyle);
 815                                         }
 816                                         else {
 817                                                 item.MergeStyle (itemStyle);
 818                                         }
 819                                         break;
 820                                 }
 821                         }
 822                 }
 823
 824 #if NET_2_0
 825                 protected internal
 826 #else
 827                 protected
 828 #endif
 829                 override void RenderContents (HtmlTextWriter writer)
 830                 {
 831                         if (Items.Count == 0)
 832                                 return;
 833
 834                         RepeatInfo ri = new RepeatInfo ();
 835                         ri.RepeatColumns = RepeatColumns;
 836                         ri.RepeatDirection = RepeatDirection;
 837                         ri.RepeatLayout = RepeatLayout;
 838                         ri.CaptionAlign = CaptionAlign;
 839                         ri.Caption = Caption;
 840                         ri.UseAccessibleHeader = UseAccessibleHeader;
 841 /*
 842 // debugging stuff that I prefer to keep for a while
 843 Console.WriteLine ("RepeatColumns {0}", ri.RepeatColumns);
 844 Console.WriteLine ("RepeatDirection {0}", ri.RepeatDirection);
 845 Console.WriteLine ("RepeatLayout {0}", ri.RepeatLayout);
 846 Console.WriteLine ("OuterTableImplied {0}", ExtractTemplateRows);
 847 Console.WriteLine ("IRepeatInfoUser.HasFooter {0}", (ShowFooter && (footerTemplate != null)));
 848 Console.WriteLine ("IRepeatInfoUser.HasHeader {0}", (ShowHeader && (headerTemplate != null)));
 849 Console.WriteLine ("IRepeatInfoUser.HasSeparators {0}", (separatorTemplate != null));
 850 Console.WriteLine ("IRepeatInfoUser.RepeatedItemCount {0}", Items.Count);
 851 for (int i=0; i < Items.Count; i++) {
 852         DataListItem dli = Items [i];
 853         Console.WriteLine ("{0}: Index {1}, Type {2}", i, dli.ItemIndex, dli.ItemType);
 854 }
 855 */
 856                         bool extract = ExtractTemplateRows;
 857                         if (extract) {
 858                                 ri.OuterTableImplied = true;
 859                                 writer.AddAttribute (HtmlTextWriterAttribute.Id, ClientID);
 860                                 if (ControlStyleCreated) {
 861                                         ControlStyle.AddAttributesToRender (writer);
 862                                 }
 863                                 writer.RenderBeginTag (HtmlTextWriterTag.Table);
 864                                 ri.RenderRepeater (writer, this, ControlStyle, this);
 865                                 writer.RenderEndTag ();
 866                         } else {
 867                                 ri.RenderRepeater (writer, this, ControlStyle, this);
 868                         }
 869                 }
 870
 871                 protected override object SaveViewState ()
 872                 {
 873 #if NET_2_0
 874                         object[] state = new object [9];
 875 #else
 876                         object[] state = new object [8];
 877 #endif
 878                         state[0] = base.SaveViewState ();
 879                         if (itemStyle != null)
 880                                 state [1] = itemStyle.SaveViewState ();
 881                         if (selectedItemStyle != null)
 882                                 state [2] = selectedItemStyle.SaveViewState ();
 883                         if (alternatingItemStyle != null)
 884                                 state [3] = alternatingItemStyle.SaveViewState ();
 885                         if (editItemStyle != null)
 886                                 state [4] = editItemStyle.SaveViewState ();
 887                         if (separatorStyle != null)
 888                                 state [5] = separatorStyle.SaveViewState ();
 889                         if (headerStyle != null)
 890                                 state [6] = headerStyle.SaveViewState ();
 891                         if (footerStyle != null)
 892                                 state [7] = footerStyle.SaveViewState ();
 893 #if NET_2_0
 894                         if (ControlStyleCreated)
 895                                 state [8] = ControlStyle.SaveViewState ();
 896 #endif
 897                         return state;
 898                 }
 899
 900                 protected override void TrackViewState ()
 901                 {
 902                         base.TrackViewState ();
 903                         if (alternatingItemStyle != null)
 904                                 alternatingItemStyle.TrackViewState ();
 905                         if (editItemStyle != null)
 906                                 editItemStyle.TrackViewState ();
 907                         if (footerStyle != null)
 908                                 footerStyle.TrackViewState ();
 909                         if (headerStyle != null)
 910                                 headerStyle.TrackViewState ();
 911                         if (itemStyle != null)
 912                                 itemStyle.TrackViewState ();
 913                         if (selectedItemStyle != null)
 914                                 selectedItemStyle.TrackViewState ();
 915                         if (separatorStyle != null)
 916                                 separatorStyle.TrackViewState ();
 917 #if NET_2_0
 918                         if (ControlStyleCreated)
 919                                 ControlStyle.TrackViewState ();
 920 #endif
 921                 }
 922
 923
 924                 [WebSysDescription ("")]
 925                 [WebCategory ("Action")]
 926                 public event DataListCommandEventHandler CancelCommand {
 927                         add { Events.AddHandler (cancelCommandEvent, value); }
 928                         remove { Events.RemoveHandler (cancelCommandEvent, value); }
 929                 }
 930
 931                 [WebSysDescription ("")]
 932                 [WebCategory ("Action")]
 933                 public event DataListCommandEventHandler DeleteCommand {
 934                         add { Events.AddHandler (deleteCommandEvent, value); }
 935                         remove { Events.RemoveHandler (deleteCommandEvent, value); }
 936                 }
 937
 938                 [WebSysDescription ("")]
 939                 [WebCategory ("Action")]
 940                 public event DataListCommandEventHandler EditCommand {
 941                         add { Events.AddHandler (editCommandEvent, value); }
 942                         remove { Events.RemoveHandler (editCommandEvent, value); }
 943                 }
 944
 945                 [WebSysDescription ("")]
 946                 [WebCategory ("Action")]
 947                 public event DataListCommandEventHandler ItemCommand {
 948                         add { Events.AddHandler (itemCommandEvent, value); }
 949                         remove { Events.RemoveHandler (itemCommandEvent, value); }
 950                 }
 951
 952                 [WebSysDescription ("")]
 953                 [WebCategory ("Action")]
 954                 public event DataListItemEventHandler ItemCreated {
 955                         add { Events.AddHandler (itemCreatedEvent, value); }
 956                         remove { Events.RemoveHandler (itemCreatedEvent, value); }
 957                 }
 958
 959                 [WebSysDescription ("")]
 960                 [WebCategory ("Action")]
 961                 public event DataListItemEventHandler ItemDataBound {
 962                         add { Events.AddHandler (itemDataBoundEvent, value); }
 963                         remove { Events.RemoveHandler (itemDataBoundEvent, value); }
 964                 }
 965
 966                 [WebSysDescription ("")]
 967                 [WebCategory ("Action")]
 968                 public event DataListCommandEventHandler UpdateCommand {
 969                         add { Events.AddHandler (updateCommandEvent, value); }
 970                         remove { Events.RemoveHandler (updateCommandEvent, value); }
 971                 }
 972
 973
 974                 // IRepeatInfoUser support
 975
 976                 bool IRepeatInfoUser.HasFooter {
 977                         get { return (ShowFooter && (footerTemplate != null)); }
 978                 }
 979
 980                 bool IRepeatInfoUser.HasHeader {
 981                         get { return (ShowHeader && (headerTemplate != null)); }
 982                 }
 983
 984                 bool IRepeatInfoUser.HasSeparators {
 985                         get { return (separatorTemplate != null); }
 986                 }
 987
 988                 // don't include header, footer and separators in the count
 989                 int IRepeatInfoUser.RepeatedItemCount {
 990                         get {
 991                                 if (idx == -1) {
 992                                         object o = ViewState ["Items"];
 993                                         idx = (o == null) ? 0 : (int) o;
 994                                 }
 995                                 return idx;
 996                         }
 997                 }
 998
 999                 Style IRepeatInfoUser.GetItemStyle (ListItemType itemType, int repeatIndex)
1000                 {
1001                         DataListItem item = null;
1002                         switch (itemType) {
1003                         case ListItemType.Header:
1004                         case ListItemType.Footer:
1005                                 if (repeatIndex >= 0 && (!HasControls () || repeatIndex >= Controls.Count))
1006                                         throw new ArgumentOutOfRangeException ();
1007
1008                                 item = FindFirstItem (itemType);
1009                                 break;
1010                         case ListItemType.Item:
1011                         case ListItemType.AlternatingItem:
1012                         case ListItemType.SelectedItem:
1013                         case ListItemType.EditItem:
1014                                 if (repeatIndex >= 0 && (!HasControls () || repeatIndex >= Controls.Count))
1015                                         throw new ArgumentOutOfRangeException ();
1016
1017                                 item = FindBestItem (repeatIndex);
1018                                 break;
1019                         case ListItemType.Separator:
1020                                 if (repeatIndex >= 0 && (!HasControls () || repeatIndex >= Controls.Count))
1021                                         throw new ArgumentOutOfRangeException ();
1022
1023                                 item = FindSpecificItem (itemType, repeatIndex);
1024                                 break;
1025                         default:
1026                                 item = null;
1027                                 break;
1028                         }
1029
1030                         if (item == null || item.ControlStyleCreated == false)
1031                                 return null;
1032
1033                         return item.ControlStyle;
1034                 }
1035
1036                 // Header and Footer don't have a "real" index (-1)
1037                 private DataListItem FindFirstItem (ListItemType itemType)
1038                 {
1039                         for (int i = 0; i < Controls.Count; i++) {
1040                                 DataListItem item = (Controls [i] as DataListItem);
1041                                 if ((item != null) && (item.ItemType == itemType))
1042                                         return item;
1043                         }
1044                         return null;
1045                 }
1046
1047                 // Both Type and Index must match (e.g. Separator)
1048                 private DataListItem FindSpecificItem (ListItemType itemType, int repeatIndex)
1049                 {
1050                         for (int i = 0; i < Controls.Count; i++) {
1051                                 DataListItem item = (Controls [i] as DataListItem);
1052                                 if ((item != null) && (item.ItemType == itemType) && (item.ItemIndex == repeatIndex))
1053                                         return item;
1054                         }
1055                         return null;
1056                 }
1057
1058                 // we get call for Item even for AlternatingItem :(
1059                 private DataListItem FindBestItem (int repeatIndex)
1060                 {
1061                         for (int i = 0; i < Controls.Count; i++) {
1062                                 DataListItem item = (Controls [i] as DataListItem);
1063                                 if ((item != null) && (item.ItemIndex == repeatIndex)) {
1064                                         switch (item.ItemType) {
1065                                         case ListItemType.Item:
1066                                         case ListItemType.AlternatingItem:
1067                                         case ListItemType.SelectedItem:
1068                                         case ListItemType.EditItem:
1069                                                 return item;
1070                                         default:
1071                                                 return null;
1072                                         }
1073                                 }
1074                         }
1075                         return null;
1076                 }
1077
1078                 void IRepeatInfoUser.RenderItem (ListItemType itemType, int repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer)
1079                 {
1080                         // if possible take the easy way out...
1081                         if (!HasControls ())
1082                                 return;
1083
1084                         DataListItem item = null;
1085                         switch (itemType) {
1086                         case ListItemType.Header:
1087                         case ListItemType.Footer:
1088                                 item = FindFirstItem (itemType);
1089                                 break;
1090                         case ListItemType.Item:
1091                         case ListItemType.AlternatingItem:
1092                         case ListItemType.SelectedItem:
1093                         case ListItemType.EditItem:
1094                                 item = FindBestItem (repeatIndex);
1095                                 break;
1096                         case ListItemType.Separator:
1097                                 item = FindSpecificItem (itemType, repeatIndex);
1098                                 break;
1099                         }
1100
1101                         if (item != null) {
1102                                 bool extract = ExtractTemplateRows;
1103                                 bool table = (RepeatLayout == RepeatLayout.Table);
1104                                 if (!table || extract) {
1105                                         // sadly RepeatInfo doesn't support Style for RepeatLayout.Flow
1106                                         Style s = (this as IRepeatInfoUser).GetItemStyle (itemType, repeatIndex);
1107                                         if (s != null)
1108                                                 item.ControlStyle.CopyFrom (s);
1109                                 }
1110 //Console.WriteLine ("RenderItem #{0} type {1}", repeatIndex, itemType);
1111                                 item.RenderItem (writer, extract, table);
1112                         } else {
1113 //Console.WriteLine ("Couldn't find #{0} type {1} out of {2} items / {3} controls", repeatIndex, itemType, Items.Count, Controls.Count);
1114                         }
1115                 }
1116         }
1117 }