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      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(WEBGL)
     29 #include "JSWebGLRenderingContext.h"
     30 #endif
     31 #include "JSDOMWindowCustom.h"
     32 #include "JSHTMLDocument.h"
     33 #include "JSLocation.h"
     34 #include "JSTouch.h"
     35 #include "JSTouchList.h"
     36 #include "Location.h"
     37 #include "ScriptController.h"
     38 #include "TouchList.h"
     39 
     40 #if ENABLE(SVG)
     41 #include "JSSVGDocument.h"
     42 #include "SVGDocument.h"
     43 #endif
     44 
     45 #include <wtf/GetPtr.h>
     46 
     47 using namespace JSC;
     48 
     49 namespace WebCore {
     50 
     51 void JSDocument::markChildren(MarkStack& markStack)
     52 {
     53     JSNode::markChildren(markStack);
     54 
     55     Document* document = impl();
     56     JSGlobalData& globalData = *Heap::heap(this)->globalData();
     57 
     58     markActiveObjectsForContext(markStack, globalData, document);
     59     markDOMObjectWrapper(markStack, globalData, document->implementation());
     60     markDOMObjectWrapper(markStack, globalData, document->styleSheets());
     61 }
     62 
     63 JSValue JSDocument::location(ExecState* exec) const
     64 {
     65     Frame* frame = static_cast<Document*>(impl())->frame();
     66     if (!frame)
     67         return jsNull();
     68 
     69     Location* location = frame->domWindow()->location();
     70     if (JSDOMWrapper* wrapper = getCachedWrapper(currentWorld(exec), location))
     71         return wrapper;
     72 
     73     JSLocation* jsLocation = new (exec) JSLocation(getDOMStructure<JSLocation>(exec, globalObject()), globalObject(), location);
     74     cacheWrapper(currentWorld(exec), location, jsLocation);
     75     return jsLocation;
     76 }
     77 
     78 void JSDocument::setLocation(ExecState* exec, JSValue value)
     79 {
     80     Frame* frame = static_cast<Document*>(impl())->frame();
     81     if (!frame)
     82         return;
     83 
     84     String str = ustringToString(value.toString(exec));
     85 
     86     Frame* lexicalFrame = asJSDOMWindow(exec->lexicalGlobalObject())->impl()->frame();
     87 
     88     // IE and Mozilla both resolve the URL relative to the source frame,
     89     // not the target frame.
     90     Frame* activeFrame = asJSDOMWindow(exec->dynamicGlobalObject())->impl()->frame();
     91     str = activeFrame->document()->completeURL(str).string();
     92 
     93     frame->navigationScheduler()->scheduleLocationChange(lexicalFrame->document()->securityOrigin(),
     94         str, activeFrame->loader()->outgoingReferrer(), !activeFrame->script()->anyPageIsProcessingUserGesture(), false);
     95 }
     96 
     97 JSValue toJS(ExecState* exec, JSDOMGlobalObject* globalObject, Document* document)
     98 {
     99     if (!document)
    100         return jsNull();
    101 
    102     JSDOMWrapper* wrapper = getCachedWrapper(currentWorld(exec), document);
    103     if (wrapper)
    104         return wrapper;
    105 
    106     if (document->isHTMLDocument())
    107         wrapper = CREATE_DOM_NODE_WRAPPER(exec, globalObject, HTMLDocument, document);
    108 #if ENABLE(SVG)
    109     else if (document->isSVGDocument())
    110         wrapper = CREATE_DOM_NODE_WRAPPER(exec, globalObject, SVGDocument, document);
    111 #endif
    112     else
    113         wrapper = CREATE_DOM_NODE_WRAPPER(exec, globalObject, Document, document);
    114 
    115     // Make sure the document is kept around by the window object, and works right with the
    116     // back/forward cache.
    117     if (!document->frame()) {
    118         size_t nodeCount = 0;
    119         for (Node* n = document; n; n = n->traverseNextNode())
    120             nodeCount++;
    121 
    122         exec->heap()->reportExtraMemoryCost(nodeCount * sizeof(Node));
    123     }
    124 
    125     return wrapper;
    126 }
    127 
    128 #if ENABLE(TOUCH_EVENTS)
    129 JSValue JSDocument::createTouchList(ExecState* exec)
    130 {
    131     RefPtr<TouchList> touchList = TouchList::create();
    132 
    133     for (int i = 0; i < exec->argumentCount(); i++)
    134         touchList->append(toTouch(exec->argument(i)));
    135 
    136     return toJS(exec, touchList.release());
    137 }
    138 #endif
    139 
    140 } // namespace WebCore
    141