author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 01:32:07 +0300 | |
changeset 2 | 303757a437d3 |
parent 0 | 4f2f89ce4247 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (C) 2009 Google Inc. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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#include "config.h" |
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#include "V8DOMWrapper.h" |
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|
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#include "CSSMutableStyleDeclaration.h" |
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#include "DOMDataStore.h" |
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#include "DocumentLoader.h" |
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#include "FrameLoaderClient.h" |
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#include "Notification.h" |
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#include "ScriptController.h" |
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#include "V8AbstractEventListener.h" |
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#include "V8Binding.h" |
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#include "V8Collection.h" |
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#include "V8CustomEventListener.h" |
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#include "V8DedicatedWorkerContext.h" |
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#include "V8DOMApplicationCache.h" |
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#include "V8DOMMap.h" |
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#include "V8DOMWindow.h" |
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#include "V8EventListenerList.h" |
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#include "V8EventSource.h" |
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#include "V8FileReader.h" |
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#include "V8HTMLCollection.h" |
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#include "V8HTMLDocument.h" |
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#include "V8IDBRequest.h" |
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#include "V8IsolatedContext.h" |
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#include "V8Location.h" |
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#include "V8MessageChannel.h" |
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#include "V8NamedNodeMap.h" |
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#include "V8Node.h" |
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#include "V8NodeFilterCondition.h" |
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#include "V8NodeList.h" |
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#include "V8Notification.h" |
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#include "V8Proxy.h" |
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#include "V8SharedWorker.h" |
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#include "V8SharedWorkerContext.h" |
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#include "V8StyleSheet.h" |
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#include "V8WebSocket.h" |
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#include "V8Worker.h" |
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#include "V8WorkerContext.h" |
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#include "V8WorkerContextEventListener.h" |
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#include "V8XMLHttpRequest.h" |
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#include "ArrayBufferView.h" |
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#include "WebGLContextAttributes.h" |
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#include "WebGLUniformLocation.h" |
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#include "WorkerContextExecutionProxy.h" |
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#include "WrapperTypeInfo.h" |
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#if ENABLE(SVG) |
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#include "SVGElementInstance.h" |
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#include "SVGPathSeg.h" |
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#include "V8SVGElementInstance.h" |
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#endif |
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#include <algorithm> |
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#include <utility> |
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#include <v8-debug.h> |
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#include <wtf/Assertions.h> |
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#include <wtf/OwnArrayPtr.h> |
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#include <wtf/StdLibExtras.h> |
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#include <wtf/UnusedParam.h> |
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namespace WebCore { |
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typedef HashMap<Node*, v8::Object*> DOMNodeMap; |
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typedef HashMap<void*, v8::Object*> DOMObjectMap; |
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// The caller must have increased obj's ref count. |
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void V8DOMWrapper::setJSWrapperForDOMObject(void* object, v8::Persistent<v8::Object> wrapper) |
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{ |
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ASSERT(V8DOMWrapper::maybeDOMWrapper(wrapper)); |
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ASSERT(!domWrapperType(wrapper)->toActiveDOMObjectFunction); |
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getDOMObjectMap().set(object, wrapper); |
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} |
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103 |
|
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// The caller must have increased obj's ref count. |
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void V8DOMWrapper::setJSWrapperForActiveDOMObject(void* object, v8::Persistent<v8::Object> wrapper) |
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106 |
{ |
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ASSERT(V8DOMWrapper::maybeDOMWrapper(wrapper)); |
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ASSERT(domWrapperType(wrapper)->toActiveDOMObjectFunction); |
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getActiveDOMObjectMap().set(object, wrapper); |
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} |
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111 |
|
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// The caller must have increased node's ref count. |
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void V8DOMWrapper::setJSWrapperForDOMNode(Node* node, v8::Persistent<v8::Object> wrapper) |
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114 |
{ |
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ASSERT(V8DOMWrapper::maybeDOMWrapper(wrapper)); |
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getDOMNodeMap().set(node, wrapper); |
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} |
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118 |
|
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v8::Local<v8::Function> V8DOMWrapper::getConstructor(WrapperTypeInfo* type, v8::Handle<v8::Value> objectPrototype) |
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120 |
{ |
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// A DOM constructor is a function instance created from a DOM constructor |
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// template. There is one instance per context. A DOM constructor is |
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// different from a normal function in two ways: |
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// 1) it cannot be called as constructor (aka, used to create a DOM object) |
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// 2) its __proto__ points to Object.prototype rather than |
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// Function.prototype. |
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// The reason for 2) is that, in Safari, a DOM constructor is a normal JS |
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// object, but not a function. Hotmail relies on the fact that, in Safari, |
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// HTMLElement.__proto__ == Object.prototype. |
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v8::Handle<v8::FunctionTemplate> functionTemplate = type->getTemplate(); |
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// Getting the function might fail if we're running out of |
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// stack or memory. |
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v8::TryCatch tryCatch; |
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v8::Local<v8::Function> value = functionTemplate->GetFunction(); |
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if (value.IsEmpty()) |
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return v8::Local<v8::Function>(); |
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// Hotmail fix, see comments above. |
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if (!objectPrototype.IsEmpty()) |
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value->SetPrototype(objectPrototype); |
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return value; |
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} |
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142 |
|
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v8::Local<v8::Function> V8DOMWrapper::getConstructorForContext(WrapperTypeInfo* type, v8::Handle<v8::Context> context) |
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144 |
{ |
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// Enter the scope for this context to get the correct constructor. |
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v8::Context::Scope scope(context); |
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|
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return getConstructor(type, V8DOMWindowShell::getHiddenObjectPrototype(context)); |
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} |
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150 |
|
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v8::Local<v8::Function> V8DOMWrapper::getConstructor(WrapperTypeInfo* type, DOMWindow* window) |
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{ |
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Frame* frame = window->frame(); |
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if (!frame) |
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return v8::Local<v8::Function>(); |
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|
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v8::Handle<v8::Context> context = V8Proxy::context(frame); |
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if (context.IsEmpty()) |
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return v8::Local<v8::Function>(); |
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|
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return getConstructorForContext(type, context); |
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} |
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163 |
|
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#if ENABLE(WORKERS) |
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v8::Local<v8::Function> V8DOMWrapper::getConstructor(WrapperTypeInfo* type, WorkerContext*) |
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{ |
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WorkerScriptController* controller = WorkerScriptController::controllerForContext(); |
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WorkerContextExecutionProxy* proxy = controller ? controller->proxy() : 0; |
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if (!proxy) |
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return v8::Local<v8::Function>(); |
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|
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v8::Handle<v8::Context> context = proxy->context(); |
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if (context.IsEmpty()) |
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return v8::Local<v8::Function>(); |
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|
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return getConstructorForContext(type, context); |
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} |
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#endif |
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|
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void V8DOMWrapper::setHiddenReference(v8::Handle<v8::Object> parent, v8::Handle<v8::Value> child) |
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{ |
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v8::Local<v8::Value> hiddenReferenceObject = parent->GetInternalField(v8DOMHiddenReferenceArrayIndex); |
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if (hiddenReferenceObject->IsNull() || hiddenReferenceObject->IsUndefined()) { |
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hiddenReferenceObject = v8::Array::New(); |
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parent->SetInternalField(v8DOMHiddenReferenceArrayIndex, hiddenReferenceObject); |
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} |
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v8::Local<v8::Array> hiddenReferenceArray = v8::Local<v8::Array>::Cast(hiddenReferenceObject); |
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hiddenReferenceArray->Set(v8::Integer::New(hiddenReferenceArray->Length()), child); |
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} |
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|
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void V8DOMWrapper::setHiddenWindowReference(Frame* frame, v8::Handle<v8::Value> jsObject) |
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{ |
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// Get DOMWindow |
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if (!frame) |
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return; // Object might be detached from window |
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v8::Handle<v8::Context> context = V8Proxy::context(frame); |
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if (context.IsEmpty()) |
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return; |
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|
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v8::Handle<v8::Object> global = context->Global(); |
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// Look for real DOM wrapper. |
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global = V8DOMWrapper::lookupDOMWrapper(V8DOMWindow::GetTemplate(), global); |
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ASSERT(!global.IsEmpty()); |
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|
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setHiddenReference(global, jsObject); |
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} |
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207 |
|
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WrapperTypeInfo* V8DOMWrapper::domWrapperType(v8::Handle<v8::Object> object) |
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{ |
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ASSERT(V8DOMWrapper::maybeDOMWrapper(object)); |
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return static_cast<WrapperTypeInfo*>(object->GetPointerFromInternalField(v8DOMWrapperTypeIndex)); |
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} |
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213 |
|
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PassRefPtr<NodeFilter> V8DOMWrapper::wrapNativeNodeFilter(v8::Handle<v8::Value> filter) |
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215 |
{ |
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// A NodeFilter is used when walking through a DOM tree or iterating tree |
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// nodes. |
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// FIXME: we may want to cache NodeFilterCondition and NodeFilter |
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// object, but it is minor. |
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// NodeFilter is passed to NodeIterator that has a ref counted pointer |
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// to NodeFilter. NodeFilter has a ref counted pointer to NodeFilterCondition. |
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// In NodeFilterCondition, filter object is persisted in its constructor, |
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// and disposed in its destructor. |
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if (!filter->IsFunction()) |
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return 0; |
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226 |
|
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return NodeFilter::create(V8NodeFilterCondition::create(filter)); |
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} |
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229 |
|
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static bool globalObjectPrototypeIsDOMWindow(v8::Handle<v8::Object> objectPrototype) |
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{ |
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// We can identify what type of context the global object is wrapping by looking at the |
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// internal field count of its prototype. This assumes WorkerContexts and DOMWindows have different numbers |
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// of internal fields, so a COMPILE_ASSERT is included to warn if this ever changes. |
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#if ENABLE(WORKERS) |
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COMPILE_ASSERT(V8DOMWindow::internalFieldCount != V8WorkerContext::internalFieldCount, |
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DOMWindowAndWorkerContextHaveUnequalFieldCounts); |
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COMPILE_ASSERT(V8DOMWindow::internalFieldCount != V8DedicatedWorkerContext::internalFieldCount, |
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DOMWindowAndDedicatedWorkerContextHaveUnequalFieldCounts); |
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#endif |
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#if ENABLE(SHARED_WORKERS) |
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COMPILE_ASSERT(V8DOMWindow::internalFieldCount != V8SharedWorkerContext::internalFieldCount, |
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DOMWindowAndSharedWorkerContextHaveUnequalFieldCounts); |
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#endif |
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return objectPrototype->InternalFieldCount() == V8DOMWindow::internalFieldCount; |
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} |
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247 |
|
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v8::Local<v8::Object> V8DOMWrapper::instantiateV8Object(V8Proxy* proxy, WrapperTypeInfo* type, void* impl) |
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249 |
{ |
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WorkerContext* workerContext = 0; |
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if (V8IsolatedContext::getEntered()) { |
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// This effectively disables the wrapper cache for isolated worlds. |
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proxy = 0; |
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// FIXME: Do we need a wrapper cache for the isolated world? We should |
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// see if the performance gains are worth while. |
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// We'll get one once we give the isolated context a proper window shell. |
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} else if (!proxy) { |
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v8::Handle<v8::Context> context = v8::Context::GetCurrent(); |
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if (!context.IsEmpty()) { |
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v8::Handle<v8::Object> globalPrototype = v8::Handle<v8::Object>::Cast(context->Global()->GetPrototype()); |
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if (globalObjectPrototypeIsDOMWindow(globalPrototype)) |
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proxy = V8Proxy::retrieve(V8DOMWindow::toNative(globalPrototype)->frame()); |
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#if ENABLE(WORKERS) |
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else |
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workerContext = V8WorkerContext::toNative(lookupDOMWrapper(V8WorkerContext::GetTemplate(), context->Global())); |
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#endif |
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} |
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} |
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269 |
|
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v8::Local<v8::Object> instance; |
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if (proxy) |
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// FIXME: Fix this to work properly with isolated worlds (see above). |
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instance = proxy->windowShell()->createWrapperFromCache(type); |
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else { |
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v8::Local<v8::Function> function; |
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#if ENABLE(WORKERS) |
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if (workerContext) |
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function = getConstructor(type, workerContext); |
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else |
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#endif |
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function = type->getTemplate()->GetFunction(); |
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instance = SafeAllocation::newInstance(function); |
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} |
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if (!instance.IsEmpty()) { |
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// Avoid setting the DOM wrapper for failed allocations. |
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setDOMWrapper(instance, type, impl); |
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} |
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return instance; |
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} |
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290 |
|
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#ifndef NDEBUG |
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bool V8DOMWrapper::maybeDOMWrapper(v8::Handle<v8::Value> value) |
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{ |
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if (value.IsEmpty() || !value->IsObject()) |
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return false; |
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|
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v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(value); |
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if (!object->InternalFieldCount()) |
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return false; |
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|
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ASSERT(object->InternalFieldCount() >= v8DefaultWrapperInternalFieldCount); |
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|
302 |
|
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v8::Handle<v8::Value> wrapper = object->GetInternalField(v8DOMWrapperObjectIndex); |
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ASSERT(wrapper->IsNumber() || wrapper->IsExternal()); |
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|
305 |
|
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return true; |
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} |
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#endif |
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|
309 |
|
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|
310 |
bool V8DOMWrapper::isValidDOMObject(v8::Handle<v8::Value> value) |
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|
311 |
{ |
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|
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if (value.IsEmpty() || !value->IsObject()) |
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|
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return false; |
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return v8::Handle<v8::Object>::Cast(value)->InternalFieldCount(); |
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|
315 |
} |
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|
316 |
|
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|
317 |
bool V8DOMWrapper::isWrapperOfType(v8::Handle<v8::Value> value, WrapperTypeInfo* type) |
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|
318 |
{ |
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|
319 |
if (!isValidDOMObject(value)) |
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|
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return false; |
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|
321 |
|
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|
322 |
v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(value); |
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|
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ASSERT(object->InternalFieldCount() >= v8DefaultWrapperInternalFieldCount); |
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|
324 |
|
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|
325 |
v8::Handle<v8::Value> wrapper = object->GetInternalField(v8DOMWrapperObjectIndex); |
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|
326 |
ASSERT(wrapper->IsNumber() || wrapper->IsExternal()); |
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|
327 |
|
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|
328 |
WrapperTypeInfo* typeInfo = static_cast<WrapperTypeInfo*>(object->GetPointerFromInternalField(v8DOMWrapperTypeIndex)); |
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|
329 |
return typeInfo == type; |
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|
330 |
} |
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|
331 |
|
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|
332 |
v8::Handle<v8::Object> V8DOMWrapper::getWrapper(Node* node) |
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|
333 |
{ |
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|
334 |
ASSERT(WTF::isMainThread()); |
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|
335 |
V8IsolatedContext* context = V8IsolatedContext::getEntered(); |
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|
336 |
if (LIKELY(!context)) { |
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|
337 |
v8::Persistent<v8::Object>* wrapper = node->wrapper(); |
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|
338 |
if (!wrapper) |
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|
339 |
return v8::Handle<v8::Object>(); |
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|
340 |
return *wrapper; |
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|
341 |
} |
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|
342 |
|
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|
343 |
DOMNodeMapping& domNodeMap = context->world()->domDataStore()->domNodeMap(); |
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|
344 |
return domNodeMap.get(node); |
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|
345 |
} |
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|
346 |
|
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|
347 |
// A JS object of type EventTarget is limited to a small number of possible classes. |
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|
348 |
// Check EventTarget.h for new type conversion methods |
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|
349 |
v8::Handle<v8::Value> V8DOMWrapper::convertEventTargetToV8Object(EventTarget* target) |
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|
350 |
{ |
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|
351 |
if (!target) |
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|
352 |
return v8::Null(); |
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|
353 |
|
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|
354 |
#if ENABLE(SVG) |
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|
355 |
if (SVGElementInstance* instance = target->toSVGElementInstance()) |
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|
356 |
return toV8(instance); |
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|
357 |
#endif |
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|
358 |
|
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|
359 |
#if ENABLE(WORKERS) |
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|
360 |
if (Worker* worker = target->toWorker()) |
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|
361 |
return toV8(worker); |
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|
362 |
|
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Revision: 201037
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|
363 |
if (DedicatedWorkerContext* workerContext = target->toDedicatedWorkerContext()) |
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|
364 |
return toV8(workerContext); |
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|
365 |
#endif // WORKERS |
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|
366 |
|
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Revision: 201037
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|
367 |
#if ENABLE(SHARED_WORKERS) |
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|
368 |
if (SharedWorker* sharedWorker = target->toSharedWorker()) |
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|
369 |
return toV8(sharedWorker); |
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|
370 |
|
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|
371 |
if (SharedWorkerContext* sharedWorkerContext = target->toSharedWorkerContext()) |
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Revision: 201037
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|
372 |
return toV8(sharedWorkerContext); |
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|
373 |
#endif // SHARED_WORKERS |
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|
374 |
|
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Revision: 201037
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|
375 |
#if ENABLE(NOTIFICATIONS) |
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|
376 |
if (Notification* notification = target->toNotification()) |
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|
377 |
return toV8(notification); |
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|
378 |
#endif |
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diff
changeset
|
379 |
|
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Revision: 201037
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diff
changeset
|
380 |
#if ENABLE(INDEXED_DATABASE) |
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Revision: 201037
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|
381 |
if (IDBRequest* idbRequest = target->toIDBRequest()) |
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Revision: 201037
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|
382 |
return toV8(idbRequest); |
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Revision: 201037
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diff
changeset
|
383 |
#endif |
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Revision: 201037
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diff
changeset
|
384 |
|
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Revision: 201037
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diff
changeset
|
385 |
#if ENABLE(WEB_SOCKETS) |
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Revision: 201037
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diff
changeset
|
386 |
if (WebSocket* webSocket = target->toWebSocket()) |
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Revision: 201037
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diff
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|
387 |
return toV8(webSocket); |
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Revision: 201037
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diff
changeset
|
388 |
#endif |
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Revision: 201037
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parents:
diff
changeset
|
389 |
|
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Revision: 201037
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parents:
diff
changeset
|
390 |
if (Node* node = target->toNode()) |
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Revision: 201037
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diff
changeset
|
391 |
return toV8(node); |
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Revision: 201037
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parents:
diff
changeset
|
392 |
|
4f2f89ce4247
Revision: 201037
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parents:
diff
changeset
|
393 |
if (DOMWindow* domWindow = target->toDOMWindow()) |
4f2f89ce4247
Revision: 201037
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diff
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|
394 |
return toV8(domWindow); |
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Revision: 201037
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parents:
diff
changeset
|
395 |
|
4f2f89ce4247
Revision: 201037
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parents:
diff
changeset
|
396 |
// XMLHttpRequest is created within its JS counterpart. |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
397 |
if (XMLHttpRequest* xmlHttpRequest = target->toXMLHttpRequest()) { |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
398 |
v8::Handle<v8::Object> wrapper = getActiveDOMObjectMap().get(xmlHttpRequest); |
4f2f89ce4247
Revision: 201037
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parents:
diff
changeset
|
399 |
ASSERT(!wrapper.IsEmpty()); |
4f2f89ce4247
Revision: 201037
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diff
changeset
|
400 |
return wrapper; |
4f2f89ce4247
Revision: 201037
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parents:
diff
changeset
|
401 |
} |
4f2f89ce4247
Revision: 201037
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parents:
diff
changeset
|
402 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
403 |
// MessagePort is created within its JS counterpart |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
404 |
if (MessagePort* port = target->toMessagePort()) { |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
405 |
v8::Handle<v8::Object> wrapper = getActiveDOMObjectMap().get(port); |
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ASSERT(!wrapper.IsEmpty()); |
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return wrapper; |
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408 |
} |
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409 |
|
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if (XMLHttpRequestUpload* upload = target->toXMLHttpRequestUpload()) { |
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v8::Handle<v8::Object> wrapper = getDOMObjectMap().get(upload); |
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412 |
ASSERT(!wrapper.IsEmpty()); |
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return wrapper; |
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414 |
} |
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|
415 |
|
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416 |
#if ENABLE(OFFLINE_WEB_APPLICATIONS) |
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if (DOMApplicationCache* domAppCache = target->toDOMApplicationCache()) |
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return toV8(domAppCache); |
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#endif |
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420 |
|
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421 |
#if ENABLE(EVENTSOURCE) |
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if (EventSource* eventSource = target->toEventSource()) |
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return toV8(eventSource); |
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#endif |
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425 |
|
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#if ENABLE(FILE_READER) |
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if (FileReader* fileReader = target->toFileReader()) |
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return toV8(fileReader); |
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429 |
#endif |
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430 |
|
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ASSERT(0); |
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return notHandledByInterceptor(); |
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} |
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|
434 |
|
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435 |
PassRefPtr<EventListener> V8DOMWrapper::getEventListener(v8::Local<v8::Value> value, bool isAttribute, ListenerLookupType lookup) |
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436 |
{ |
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v8::Handle<v8::Context> context = v8::Context::GetCurrent(); |
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if (context.IsEmpty()) |
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439 |
return 0; |
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if (lookup == ListenerFindOnly) |
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return V8EventListenerList::findWrapper(value, isAttribute); |
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v8::Handle<v8::Object> globalPrototype = v8::Handle<v8::Object>::Cast(context->Global()->GetPrototype()); |
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if (globalObjectPrototypeIsDOMWindow(globalPrototype)) |
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return V8EventListenerList::findOrCreateWrapper<V8EventListener>(value, isAttribute); |
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#if ENABLE(WORKERS) |
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return V8EventListenerList::findOrCreateWrapper<V8WorkerContextEventListener>(value, isAttribute); |
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447 |
#else |
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448 |
return 0; |
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449 |
#endif |
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450 |
} |
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|
451 |
|
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|
452 |
} // namespace WebCore |