text: /*
   * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Library General Public
   * License as published by the Free Software Foundation; either
   * version 2 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Library General Public License for more details.
   *
   * You should have received a copy of the GNU Library General Public License
   * along with this library; see the file COPYING.LIB.  If not, write to
   * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   * Boston, MA 02110-1301, USA.
   */
  
  #include "config.h"
  #include "JSDocument.h"
  
  #include "ExceptionCode.h"
  #include "Frame.h"
  #include "FrameLoader.h"
  #include "HTMLDocument.h"
  #include "JSCanvasRenderingContext2D.h"
  #if ENABLE(3D_CANVAS)
  #include "JSWebGLRenderingContext.h"
  #endif
  #include "JSDOMWindowCustom.h"
  #include "JSHTMLDocument.h"
  #include "JSLocation.h"
  #include "Location.h"
  #include "ScriptController.h"
  
  #if ENABLE(SVG)
  #include "JSSVGDocument.h"
  #include "SVGDocument.h"
  #endif
  
  #include <wtf/GetPtr.h>
  
  using namespace JSC;
  
  namespace WebCore {
  
  void JSDocument::markChildren(MarkStack& markStack)
  {
      JSNode::markChildren(markStack);
  
      Document* document = impl();
      JSGlobalData& globalData = *Heap::heap(this)->globalData();
  
      markDOMNodesForDocument(markStack, document);
      markActiveObjectsForContext(markStack, globalData, document);
      markDOMObjectWrapper(markStack, globalData, document->implementation());
      markDOMObjectWrapper(markStack, globalData, document->styleSheets());
  }
  
  JSValue JSDocument::location(ExecState* exec) const
  {
      Frame* frame = static_cast<Document*>(impl())->frame();
      if (!frame)
          return jsNull();
  
      Location* location = frame->domWindow()->location();
      if (DOMObject* wrapper = getCachedDOMObjectWrapper(exec, location))
          return wrapper;
  
      JSLocation* jsLocation = new (exec) JSLocation(getDOMStructure<JSLocation>(exec, globalObject()), globalObject(), location);
      cacheDOMObjectWrapper(exec, location, jsLocation);
      return jsLocation;
  }
  
  void JSDocument::setLocation(ExecState* exec, JSValue value)
  {
      Frame* frame = static_cast<Document*>(impl())->frame();
      if (!frame)
          return;
  
      String str = value.toString(exec);
  
      // IE and Mozilla both resolve the URL relative to the source frame,
      // not the target frame.
      Frame* activeFrame = asJSDOMWindow(exec->dynamicGlobalObject())->impl()->frame();
      if (activeFrame)
          str = activeFrame->document()->completeURL(str).string();
  
      bool userGesture = activeFrame->script()->processingUserGesture();
      frame->redirectScheduler()->scheduleLocationChange(str, activeFrame->loader()->outgoingReferrer(), !activeFrame->script()->anyPageIsProcessingUserGesture(), false, userGesture);
  }
  
  JSValue toJS(ExecState* exec, JSDOMGlobalObject* globalObject, Document* document)
  {
      if (!document)
          return jsNull();
  
      DOMObject* wrapper = getCachedDOMNodeWrapper(exec, document, document);
      if (wrapper)
          return wrapper;
  
      if (document->isHTMLDocument())
          wrapper = CREATE_DOM_NODE_WRAPPER(exec, globalObject, HTMLDocument, document);
  #if ENABLE(SVG)
      else if (document->isSVGDocument())
          wrapper = CREATE_DOM_NODE_WRAPPER(exec, globalObject, SVGDocument, document);
  #endif
      else
          wrapper = CREATE_DOM_NODE_WRAPPER(exec, globalObject, Document, document);
  
      // Make sure the document is kept around by the window object, and works right with the
      // back/forward cache.
      if (!document->frame()) {
          size_t nodeCount = 0;
          for (Node* n = document; n; n = n->traverseNextNode())
              nodeCount++;
          
          exec->heap()->reportExtraMemoryCost(nodeCount * sizeof(Node));
      }
  
      return wrapper;
  }
  
  } // namespace WebCore
  