class/Mono.WebBrowser/Mono.Mozilla/DOM/Document.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2007, 2008 Novell, Inc.
  21 //
  22 // Authors:
  23 //      Andreia Gaita (avidigal@novell.com)
  24 //
  25
  26 using System;
  27 using System.Runtime.InteropServices;
  28 using System.Text;
  29 using System.Collections;
  30 using Mono.WebBrowser;
  31 using Mono.WebBrowser.DOM;
  32
  33 namespace Mono.Mozilla.DOM
  34 {
  35         internal class Document : Node, IDocument
  36         {
  37
  38                 internal nsIDOMDocument node {
  39                         get { return base.node as nsIDOMDocument;}
  40                         set { base.node = value as nsIDOMDocument; }
  41                 }
  42
  43                 public Document (WebBrowser control, nsIDOMHTMLDocument document)
  44                         : base (control, document)
  45                 {
  46                         if (control.platform != control.enginePlatform)
  47                                 this.node = nsDOMHTMLDocument.GetProxy (control, document);
  48                         else
  49                                 this.node = document;
  50                 }
  51
  52                 public Document (WebBrowser control, nsIDOMDocument document)
  53                         : base (control, document)
  54                 {
  55                         if (control.platform != control.enginePlatform)
  56                                 this.node = nsDOMDocument.GetProxy (control, document);
  57                         else
  58                                 this.node = document;
  59                 }
  60
  61                 #region IDisposable Members
  62                 protected override void Dispose (bool disposing)
  63                 {
  64                         if (!disposed) {
  65                                 if (disposing) {
  66                                         this.resources.Clear ();
  67                                         this.node = null;
  68                                 }
  69                         }
  70                         base.Dispose (disposing);
  71                 }
  72                 #endregion
  73
  74                 #region Internal
  75                 internal new nsIDOMDocument XPComObject
  76                 {
  77                         get { return this.node; }
  78                 }
  79                 #endregion
  80
  81                 #region IDocument Properties
  82
  83                 public IElement Active {
  84                         get {
  85                                 nsIDOMElement element;
  86                                 nsIWebBrowserFocus webBrowserFocus = (nsIWebBrowserFocus) (control.navigation.navigation);
  87                                 if (webBrowserFocus == null)
  88                                         return null;
  89                                 webBrowserFocus.getFocusedElement (out element);
  90                                 return (IElement)GetTypedNode (element);
  91 //                              if ((element as nsIDOMHTMLElement) != null)
  92 //                                      return new HTMLElement (control, element as nsIDOMHTMLElement) as IElement;
  93 //                              return new Element (control, element) as IElement;
  94                         }
  95                 }
  96
  97                 public string ActiveLinkColor {
  98                         get {
  99                                 if (!(node is nsIDOMHTMLDocument))
 100                                         return String.Empty;
 101                                 nsIDOMHTMLElement element;
 102                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 103                                 ((nsIDOMHTMLBodyElement)element).getALink(storage);
 104                                 return Base.StringGet (storage);
 105                         }
 106                         set {
 107                                 if (!(node is nsIDOMHTMLDocument))
 108                                         return;
 109                                 Base.StringSet (storage, value);
 110                                 nsIDOMHTMLElement element;
 111                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 112                                 ((nsIDOMHTMLBodyElement)element).setALink(storage);
 113                         }
 114                 }
 115
 116                 public IElementCollection Anchors {
 117                         get {
 118                                 if (!(node is nsIDOMHTMLDocument))
 119                                         return null;
 120                                 nsIDOMHTMLCollection ret;
 121                                 ((nsIDOMHTMLDocument)node).getAnchors (out ret);
 122                                 return new HTMLElementCollection(control, (nsIDOMNodeList)ret);
 123                         }
 124
 125                 }
 126
 127                 public IElementCollection Applets {
 128                         get {
 129                                 if (!(node is nsIDOMHTMLDocument))
 130                                         return null;
 131                                 nsIDOMHTMLCollection ret;
 132                                 ((nsIDOMHTMLDocument)node).getApplets (out ret);
 133                                 return new HTMLElementCollection(control, (nsIDOMNodeList)ret);
 134                         }
 135
 136                 }
 137
 138                 public string Background {
 139                         get {
 140                                 if (!(node is nsIDOMHTMLDocument))
 141                                         return String.Empty;
 142                                 nsIDOMHTMLElement element;
 143                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 144                                 ((nsIDOMHTMLBodyElement)element).getBackground(storage);
 145                                 return Base.StringGet (storage);
 146                         }
 147                         set {
 148                                 if (!(node is nsIDOMHTMLDocument))
 149                                         return;
 150                                 Base.StringSet (storage, value);
 151                                 nsIDOMHTMLElement element;
 152                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 153                                 ((nsIDOMHTMLBodyElement)element).setBackground(storage);
 154                         }
 155                 }
 156
 157                 public string BackColor {
 158                         get {
 159                                 if (!(node is nsIDOMHTMLDocument))
 160                                         return String.Empty;
 161                                 nsIDOMHTMLElement element;
 162                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 163                                 ((nsIDOMHTMLBodyElement)element).getBgColor(storage);
 164                                 return Base.StringGet (storage);
 165                         }
 166                         set {
 167                                 if (!(node is nsIDOMHTMLDocument))
 168                                         return;
 169                                 Base.StringSet (storage, value);
 170                                 nsIDOMHTMLElement element;
 171                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 172                                 ((nsIDOMHTMLBodyElement)element).setBgColor(storage);
 173                         }
 174                 }
 175
 176                 public IElement Body {
 177                         get {
 178                                 if (!(node is nsIDOMHTMLDocument))
 179                                         return null;
 180
 181                                 if (!resources.Contains ("Body")) {
 182                                         nsIDOMHTMLElement element;
 183                                         ((nsIDOMHTMLDocument)node).getBody (out element);
 184                                         resources.Add ("Body", GetTypedNode (element));
 185                                 }
 186                                 return resources["Body"] as IElement;
 187                         }
 188                 }
 189
 190                 // This is the most ugly code *ever*. TODO: find out why a simple thing as getting the
 191                 // document encoding is not available in any frozen public interface
 192                 public string Charset {
 193                         get {
 194                                 nsIDOMDocumentView docView = (nsIDOMDocumentView) this.node;
 195                                 nsIDOMAbstractView abstractView;
 196                                 docView.getDefaultView (out abstractView);
 197
 198                                 nsIInterfaceRequestor requestor = (nsIInterfaceRequestor) abstractView;
 199
 200                                 IntPtr ret;
 201                                 requestor.getInterface (typeof(nsIDocCharset).GUID, out ret);
 202                                 nsIDocCharset charset = (nsIDocCharset) Marshal.GetObjectForIUnknown (ret);
 203
 204                                 StringBuilder s = new StringBuilder (30);
 205                                 IntPtr r = Marshal.StringToHGlobalUni (s.ToString ());
 206                                 charset.getCharset (ref r);
 207
 208                                 return Marshal.PtrToStringAnsi (r);
 209                         }
 210                         set {
 211                                 nsIDOMDocumentView docView = (nsIDOMDocumentView) this.node;
 212                                 nsIDOMAbstractView abstractView;
 213                                 docView.getDefaultView (out abstractView);
 214
 215                                 nsIInterfaceRequestor requestor = (nsIInterfaceRequestor) abstractView;
 216
 217                                 IntPtr ret;
 218                                 requestor.getInterface (typeof (nsIDocCharset).GUID, out ret);
 219                                 nsIDocCharset charset = (nsIDocCharset) Marshal.GetTypedObjectForIUnknown (ret, typeof (nsIDocCharset));
 220
 221                                 charset.setCharset (value);
 222                                 control.navigation.Go (this.Url, LoadFlags.CharsetChange);
 223                         }
 224                 }
 225
 226                 public string Cookie {
 227                         get {
 228                                 if (!(node is nsIDOMHTMLDocument))
 229                                         return String.Empty;
 230                                 ((nsIDOMHTMLDocument)node).getCookie (storage);
 231                                 return Base.StringGet (storage);
 232                         }
 233                         set {
 234                                 if (!(node is nsIDOMHTMLDocument))
 235                                         return;
 236                                 Base.StringSet (storage, value);
 237                                 ((nsIDOMHTMLDocument)node).setCookie (storage);
 238                         }
 239                 }
 240                 public string Domain {
 241                         get {
 242                                 if (!(node is nsIDOMHTMLDocument))
 243                                         return String.Empty;
 244                                 ((nsIDOMHTMLDocument)node).getDomain (storage);
 245                                 return Base.StringGet (storage);
 246                         }
 247                 }
 248                 public IElement DocumentElement {
 249                         get {
 250                                 if (!resources.Contains ("DocumentElement")) {
 251                                         nsIDOMElement element;
 252                                         this.node.getDocumentElement (out element);
 253                                         resources.Add ("DocumentElement", GetTypedNode (element));
 254                                 }
 255                                 return resources["DocumentElement"] as IElement;
 256                         }
 257                 }
 258
 259                 public IDocumentType DocType {
 260                         get {
 261                                 nsIDOMDocumentType doctype;
 262                                 this.node.getDoctype (out doctype);
 263                                 return new DocumentType (this.control, doctype);
 264                         }
 265                 }
 266
 267
 268                 public string ForeColor {
 269                         get {
 270                                 if (!(node is nsIDOMHTMLDocument))
 271                                         return String.Empty;
 272                                 nsIDOMHTMLElement element;
 273                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 274                                 ((nsIDOMHTMLBodyElement)element).getText(storage);
 275                                 return Base.StringGet (storage);
 276                         }
 277                         set {
 278                                 if (!(node is nsIDOMHTMLDocument))
 279                                         return;
 280                                 Base.StringSet (storage, value);
 281                                 nsIDOMHTMLElement element;
 282                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 283                                 ((nsIDOMHTMLBodyElement)element).setText(storage);
 284                         }
 285                 }
 286
 287                 public IElementCollection Forms {
 288                         get {
 289                                 if (!(node is nsIDOMHTMLDocument))
 290                                         return null;
 291                                 nsIDOMHTMLCollection ret;
 292                                 ((nsIDOMHTMLDocument)node).getForms (out ret);
 293                                 return new HTMLElementCollection(control, (nsIDOMNodeList)ret);
 294                         }
 295
 296                 }
 297
 298                 public IElementCollection Images {
 299                         get {
 300                                 if (!(node is nsIDOMHTMLDocument))
 301                                         return null;
 302                                 nsIDOMHTMLCollection ret;
 303                                 ((nsIDOMHTMLDocument)node).getImages (out ret);
 304                                 return new HTMLElementCollection(control, (nsIDOMNodeList)ret);
 305                         }
 306
 307                 }
 308
 309                 public IDOMImplementation Implementation {
 310                         get {
 311                                 nsIDOMDOMImplementation implementation;
 312                                 node.getImplementation (out implementation);
 313                                 return new DOMImplementation (this.control, implementation);
 314                         }
 315                 }
 316
 317                 public string LinkColor {
 318                         get {
 319                                 if (!(node is nsIDOMHTMLDocument))
 320                                         return String.Empty;
 321                                 nsIDOMHTMLElement element;
 322                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 323                                 ((nsIDOMHTMLBodyElement)element).getLink(storage);
 324                                 return Base.StringGet (storage);
 325                         }
 326                         set {
 327                                 if (!(node is nsIDOMHTMLDocument))
 328                                         return;
 329                                 Base.StringSet (storage, value);
 330                                 nsIDOMHTMLElement element;
 331                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 332                                 ((nsIDOMHTMLBodyElement)element).setLink(storage);
 333                         }
 334                 }
 335
 336                 public IElementCollection Links {
 337                         get {
 338                                 if (!(node is nsIDOMHTMLDocument))
 339                                         return null;
 340                                 nsIDOMHTMLCollection ret;
 341                                 ((nsIDOMHTMLDocument)node).getLinks (out ret);
 342                                 return new HTMLElementCollection(control, (nsIDOMNodeList)ret);
 343                         }
 344
 345                 }
 346
 347                 public IStylesheetList Stylesheets
 348                 {
 349                         get {
 350                                 nsIDOMStyleSheetList styleList;
 351                                 nsIDOMDocumentStyle docStyle = ((nsIDOMDocumentStyle)this.node);
 352                                 docStyle.getStyleSheets (out styleList);
 353                                 return new StylesheetList (this.control, styleList);
 354                         }
 355                 }
 356
 357                 public string Title {
 358                         get {
 359                                 if (!(node is nsIDOMHTMLDocument))
 360                                         return String.Empty;
 361                                 ((nsIDOMHTMLDocument)node).getTitle (storage);
 362                                 return Base.StringGet (storage);
 363                         }
 364                         set {
 365                                 Base.StringSet (storage, value);
 366                                 ((nsIDOMHTMLDocument)node).setTitle (storage);
 367                         }
 368                 }
 369
 370                 public string Url {
 371                         get {
 372                                 if (!(node is nsIDOMHTMLDocument))
 373                                         return String.Empty;
 374                                 ((nsIDOMHTMLDocument)node).getURL (storage);
 375                                 return Base.StringGet (storage);
 376                         }
 377                 }
 378
 379                 public string VisitedLinkColor {
 380                         get {
 381                                 if (!(node is nsIDOMHTMLDocument))
 382                                         return String.Empty;
 383                                 nsIDOMHTMLElement element;
 384                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 385                                 ((nsIDOMHTMLBodyElement)element).getVLink(storage);
 386                                 return Base.StringGet (storage);
 387                         }
 388                         set {
 389                                 if (!(node is nsIDOMHTMLDocument))
 390                                         return;
 391                                 Base.StringSet (storage, value);
 392                                 nsIDOMHTMLElement element;
 393                                 ((nsIDOMHTMLDocument)node).getBody (out element);
 394                                 ((nsIDOMHTMLBodyElement)element).setVLink(storage);
 395                         }
 396                 }
 397
 398                 public IWindow Window {
 399                         get {
 400                                 nsIDOMDocumentView docView = (nsIDOMDocumentView) this.node;
 401                                 nsIDOMAbstractView abstractView;
 402                                 docView.getDefaultView (out abstractView);
 403                                 nsIInterfaceRequestor requestor = (nsIInterfaceRequestor) abstractView;
 404                                 if (requestor == null)
 405                                         return null;
 406                                 IntPtr ret;
 407                                 requestor.getInterface (typeof(nsIDOMWindow).GUID, out ret);
 408                                 nsIDOMWindow window = (nsIDOMWindow) Marshal.GetObjectForIUnknown (ret);
 409                                 return new Window (this.control, window);
 410                         }
 411                 }
 412
 413                 #endregion
 414
 415                 #region Public IDocument Methods
 416                 public IAttribute CreateAttribute (string name)
 417                 {
 418                         nsIDOMAttr nsAttribute;
 419                         Base.StringSet (storage, name);
 420                         this.node.createAttribute (storage, out nsAttribute);
 421                         return new Attribute (control, nsAttribute);
 422                 }
 423
 424                 public IElement CreateElement (string tagName)
 425                 {
 426                         nsIDOMElement nsElement;
 427                         Base.StringSet (storage, tagName);
 428                         this.node.createElement (storage, out nsElement);
 429                         if (node is nsIDOMHTMLDocument)
 430                                 return new HTMLElement (control, (nsIDOMHTMLElement)nsElement);
 431                         return new Element (control, nsElement);
 432                 }
 433
 434                 public IElement GetElementById (string id)
 435                 {
 436                         if (!resources.Contains ("GetElementById" + id)) {
 437                                 nsIDOMElement nsElement;
 438                                 Base.StringSet (storage, id);
 439                                 this.node.getElementById (storage, out nsElement);
 440                                 if (nsElement == null)
 441                                         return null;
 442                                 resources.Add ("GetElementById" + id, GetTypedNode (nsElement));
 443                         }
 444                         return resources["GetElementById" + id] as IElement;
 445                 }
 446
 447                 public IElementCollection GetElementsByTagName (string name)
 448                 {
 449                         if (!resources.Contains ("GetElementsByTagName" + name)) {
 450                                 nsIDOMNodeList nodes;
 451                                 this.node.getElementsByTagName (storage, out nodes);
 452                                 if (nodes == null)
 453                                         return null;
 454                                 resources.Add ("GetElementsByTagName" + name, new HTMLElementCollection(control, nodes));
 455                         }
 456                         return resources["GetElementsByTagName" + name] as IElementCollection;
 457                 }
 458
 459                 public IElement GetElement (int x, int y)
 460                 {
 461                         nsIDOMNodeList nodes;
 462                         this.node.getChildNodes (out nodes);
 463                         HTMLElementCollection col = new HTMLElementCollection(control, nodes);
 464                         IElement ret = null;
 465                         foreach (Element el in col) {
 466                                 if (el.Left <= x && el.Top <= y &&
 467                                         el.Left + el.Width >= x && el.Top + el.Height >= y) {
 468                                         ret = el;
 469                                         break;
 470                                 }
 471                         }
 472                         return ret;
 473                 }
 474
 475                 public void Write (string text) {
 476                         if (!(node is nsIDOMHTMLDocument))
 477                                 return;
 478                         Base.StringSet (storage, text);
 479                         ((nsIDOMHTMLDocument)node).write (storage);
 480                 }
 481
 482                 public string InvokeScript (string script)
 483                 {
 484                         return Base.EvalScript (this.control, script);
 485                 }
 486
 487                 #endregion
 488
 489                 #region Events
 490                 private System.ComponentModel.EventHandlerList events;
 491                 internal System.ComponentModel.EventHandlerList Events {
 492                         get {
 493                                 if (events == null)
 494                                         events = new System.ComponentModel.EventHandlerList();
 495
 496                                 return events;
 497                         }
 498                 }
 499                 internal static object LoadStoppedEvent = new object ();
 500                 public event EventHandler LoadStopped
 501                 {
 502                         add { Events.AddHandler (LoadStoppedEvent, value); }
 503                         remove { Events.RemoveHandler (LoadStoppedEvent, value); }
 504                 }
 505                 #endregion
 506
 507
 508                 public override int GetHashCode () {
 509                         return this.node.GetHashCode ();
 510                 }
 511         }
 512 }