/platform/external/webkit/WebCore/bindings/js/JSDocumentCustom.cpp

  1/*
  2 * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
  3 *
  4 * This library is free software; you can redistribute it and/or
  5 * modify it under the terms of the GNU Library General Public
  6 * License as published by the Free Software Foundation; either
  7 * version 2 of the License, or (at your option) any later version.
  8 *
  9 * This library is distributed in the hope that it will be useful,
 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 12 * Library General Public License for more details.
 13 *
 14 * You should have received a copy of the GNU Library General Public License
 15 * along with this library; see the file COPYING.LIB.  If not, write to
 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 17 * Boston, MA 02110-1301, USA.
 18 */
 19
 20#include "config.h"
 21#include "JSDocument.h"
 22
 23#include "ExceptionCode.h"
 24#include "Frame.h"
 25#include "FrameLoader.h"
 26#include "HTMLDocument.h"
 27#include "JSCanvasRenderingContext2D.h"
 28#if ENABLE(3D_CANVAS)
 29#include "JSWebGLRenderingContext.h"
 30#endif
 31#include "JSDOMWindowCustom.h"
 32#include "JSHTMLDocument.h"
 33#include "JSLocation.h"
 34#include "Location.h"
 35#include "ScriptController.h"
 36
 37#if ENABLE(SVG)
 38#include "JSSVGDocument.h"
 39#include "SVGDocument.h"
 40#endif
 41
 42#include <wtf/GetPtr.h>
 43
 44using namespace JSC;
 45
 46namespace WebCore {
 47
 48void JSDocument::markChildren(MarkStack& markStack)
 49{
 50    JSNode::markChildren(markStack);
 51
 52    Document* document = impl();
 53    JSGlobalData& globalData = *Heap::heap(this)->globalData();
 54
 55    markDOMNodesForDocument(markStack, document);
 56    markActiveObjectsForContext(markStack, globalData, document);
 57    markDOMObjectWrapper(markStack, globalData, document->implementation());
 58    markDOMObjectWrapper(markStack, globalData, document->styleSheets());
 59}
 60
 61JSValue JSDocument::location(ExecState* exec) const
 62{
 63    Frame* frame = static_cast<Document*>(impl())->frame();
 64    if (!frame)
 65        return jsNull();
 66
 67    Location* location = frame->domWindow()->location();
 68    if (DOMObject* wrapper = getCachedDOMObjectWrapper(exec, location))
 69        return wrapper;
 70
 71    JSLocation* jsLocation = new (exec) JSLocation(getDOMStructure<JSLocation>(exec, globalObject()), globalObject(), location);
 72    cacheDOMObjectWrapper(exec, location, jsLocation);
 73    return jsLocation;
 74}
 75
 76void JSDocument::setLocation(ExecState* exec, JSValue value)
 77{
 78    Frame* frame = static_cast<Document*>(impl())->frame();
 79    if (!frame)
 80        return;
 81
 82    String str = value.toString(exec);
 83
 84    // IE and Mozilla both resolve the URL relative to the source frame,
 85    // not the target frame.
 86    Frame* activeFrame = asJSDOMWindow(exec->dynamicGlobalObject())->impl()->frame();
 87    if (activeFrame)
 88        str = activeFrame->document()->completeURL(str).string();
 89
 90    bool userGesture = activeFrame->script()->processingUserGesture(currentWorld(exec));
 91    frame->redirectScheduler()->scheduleLocationChange(str, activeFrame->loader()->outgoingReferrer(), !activeFrame->script()->anyPageIsProcessingUserGesture(), false, userGesture);
 92}
 93
 94JSValue toJS(ExecState* exec, JSDOMGlobalObject* globalObject, Document* document)
 95{
 96    if (!document)
 97        return jsNull();
 98
 99    DOMObject* wrapper = getCachedDOMNodeWrapper(exec, document, document);
100    if (wrapper)
101        return wrapper;
102
103    if (document->isHTMLDocument())
104        wrapper = CREATE_DOM_NODE_WRAPPER(exec, globalObject, HTMLDocument, document);
105#if ENABLE(SVG)
106    else if (document->isSVGDocument())
107        wrapper = CREATE_DOM_NODE_WRAPPER(exec, globalObject, SVGDocument, document);
108#endif
109    else
110        wrapper = CREATE_DOM_NODE_WRAPPER(exec, globalObject, Document, document);
111
112    // Make sure the document is kept around by the window object, and works right with the
113    // back/forward cache.
114    if (!document->frame()) {
115        size_t nodeCount = 0;
116        for (Node* n = document; n; n = n->traverseNextNode())
117            nodeCount++;
118        
119        exec->heap()->reportExtraMemoryCost(nodeCount * sizeof(Node));
120    }
121
122    return wrapper;
123}
124
125} // namespace WebCore