diff options
Diffstat (limited to 'WebCore/bindings/v8/V8DOMWrapper.cpp')
| -rw-r--r-- | WebCore/bindings/v8/V8DOMWrapper.cpp | 480 |
1 files changed, 0 insertions, 480 deletions
diff --git a/WebCore/bindings/v8/V8DOMWrapper.cpp b/WebCore/bindings/v8/V8DOMWrapper.cpp deleted file mode 100644 index 72f6bdc..0000000 --- a/WebCore/bindings/v8/V8DOMWrapper.cpp +++ /dev/null @@ -1,480 +0,0 @@ -/* - * Copyright (C) 2009 Google Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" -#include "V8DOMWrapper.h" - -#include "CSSMutableStyleDeclaration.h" -#include "DOMDataStore.h" -#include "DocumentLoader.h" -#include "FrameLoaderClient.h" -#include "Notification.h" -#include "ScriptController.h" -#include "V8AbstractEventListener.h" -#include "V8Binding.h" -#include "V8Collection.h" -#include "V8CustomEventListener.h" -#include "V8DedicatedWorkerContext.h" -#include "V8DOMApplicationCache.h" -#include "V8DOMMap.h" -#include "V8DOMWindow.h" -#include "V8EventListenerList.h" -#include "V8EventSource.h" -#include "V8FileReader.h" -#include "V8FileWriter.h" -#include "V8HTMLCollection.h" -#include "V8HTMLDocument.h" -#include "V8IDBRequest.h" -#include "V8IDBTransaction.h" -#include "V8IsolatedContext.h" -#include "V8Location.h" -#include "V8MessageChannel.h" -#include "V8NamedNodeMap.h" -#include "V8Node.h" -#include "V8NodeFilterCondition.h" -#include "V8NodeList.h" -#include "V8Notification.h" -#include "V8Proxy.h" -#include "V8SharedWorker.h" -#include "V8SharedWorkerContext.h" -#include "V8StyleSheet.h" -#include "V8WebSocket.h" -#include "V8Worker.h" -#include "V8WorkerContext.h" -#include "V8WorkerContextEventListener.h" -#include "V8XMLHttpRequest.h" -#include "ArrayBufferView.h" -#include "WebGLContextAttributes.h" -#include "WebGLUniformLocation.h" -#include "WorkerContextExecutionProxy.h" -#include "WrapperTypeInfo.h" - -#if ENABLE(SVG) -#include "SVGElementInstance.h" -#include "SVGPathSeg.h" -#include "V8SVGElementInstance.h" -#endif - -#if ENABLE(WEB_AUDIO) -#include "V8JavaScriptAudioNode.h" -#endif - -#include <algorithm> -#include <utility> -#include <v8-debug.h> -#include <wtf/Assertions.h> -#include <wtf/OwnArrayPtr.h> -#include <wtf/StdLibExtras.h> -#include <wtf/UnusedParam.h> - -namespace WebCore { - -typedef HashMap<Node*, v8::Object*> DOMNodeMap; -typedef HashMap<void*, v8::Object*> DOMObjectMap; - -// The caller must have increased obj's ref count. -void V8DOMWrapper::setJSWrapperForDOMObject(void* object, v8::Persistent<v8::Object> wrapper) -{ - ASSERT(V8DOMWrapper::maybeDOMWrapper(wrapper)); - ASSERT(!domWrapperType(wrapper)->toActiveDOMObjectFunction); - getDOMObjectMap().set(object, wrapper); -} - -// The caller must have increased obj's ref count. -void V8DOMWrapper::setJSWrapperForActiveDOMObject(void* object, v8::Persistent<v8::Object> wrapper) -{ - ASSERT(V8DOMWrapper::maybeDOMWrapper(wrapper)); - ASSERT(domWrapperType(wrapper)->toActiveDOMObjectFunction); - getActiveDOMObjectMap().set(object, wrapper); -} - -// The caller must have increased node's ref count. -void V8DOMWrapper::setJSWrapperForDOMNode(Node* node, v8::Persistent<v8::Object> wrapper) -{ - ASSERT(V8DOMWrapper::maybeDOMWrapper(wrapper)); - getDOMNodeMap().set(node, wrapper); -} - -v8::Local<v8::Function> V8DOMWrapper::getConstructor(WrapperTypeInfo* type, v8::Handle<v8::Value> objectPrototype) -{ - // A DOM constructor is a function instance created from a DOM constructor - // template. There is one instance per context. A DOM constructor is - // different from a normal function in two ways: - // 1) it cannot be called as constructor (aka, used to create a DOM object) - // 2) its __proto__ points to Object.prototype rather than - // Function.prototype. - // The reason for 2) is that, in Safari, a DOM constructor is a normal JS - // object, but not a function. Hotmail relies on the fact that, in Safari, - // HTMLElement.__proto__ == Object.prototype. - v8::Handle<v8::FunctionTemplate> functionTemplate = type->getTemplate(); - // Getting the function might fail if we're running out of - // stack or memory. - v8::TryCatch tryCatch; - v8::Local<v8::Function> value = functionTemplate->GetFunction(); - if (value.IsEmpty()) - return v8::Local<v8::Function>(); - // Hotmail fix, see comments above. - if (!objectPrototype.IsEmpty()) - value->SetPrototype(objectPrototype); - return value; -} - -v8::Local<v8::Function> V8DOMWrapper::getConstructorForContext(WrapperTypeInfo* type, v8::Handle<v8::Context> context) -{ - // Enter the scope for this context to get the correct constructor. - v8::Context::Scope scope(context); - - return getConstructor(type, V8DOMWindowShell::getHiddenObjectPrototype(context)); -} - -v8::Local<v8::Function> V8DOMWrapper::getConstructor(WrapperTypeInfo* type, DOMWindow* window) -{ - Frame* frame = window->frame(); - if (!frame) - return v8::Local<v8::Function>(); - - v8::Handle<v8::Context> context = V8Proxy::context(frame); - if (context.IsEmpty()) - return v8::Local<v8::Function>(); - - return getConstructorForContext(type, context); -} - -#if ENABLE(WORKERS) -v8::Local<v8::Function> V8DOMWrapper::getConstructor(WrapperTypeInfo* type, WorkerContext*) -{ - WorkerScriptController* controller = WorkerScriptController::controllerForContext(); - WorkerContextExecutionProxy* proxy = controller ? controller->proxy() : 0; - if (!proxy) - return v8::Local<v8::Function>(); - - v8::Handle<v8::Context> context = proxy->context(); - if (context.IsEmpty()) - return v8::Local<v8::Function>(); - - return getConstructorForContext(type, context); -} -#endif - -void V8DOMWrapper::setHiddenReference(v8::Handle<v8::Object> parent, v8::Handle<v8::Value> child) -{ - v8::Local<v8::Value> hiddenReferenceObject = parent->GetInternalField(v8DOMHiddenReferenceArrayIndex); - if (hiddenReferenceObject->IsNull() || hiddenReferenceObject->IsUndefined()) { - hiddenReferenceObject = v8::Array::New(); - parent->SetInternalField(v8DOMHiddenReferenceArrayIndex, hiddenReferenceObject); - } - v8::Local<v8::Array> hiddenReferenceArray = v8::Local<v8::Array>::Cast(hiddenReferenceObject); - hiddenReferenceArray->Set(v8::Integer::New(hiddenReferenceArray->Length()), child); -} - -void V8DOMWrapper::setHiddenWindowReference(Frame* frame, v8::Handle<v8::Value> jsObject) -{ - // Get DOMWindow - if (!frame) - return; // Object might be detached from window - v8::Handle<v8::Context> context = V8Proxy::context(frame); - if (context.IsEmpty()) - return; - - v8::Handle<v8::Object> global = context->Global(); - // Look for real DOM wrapper. - global = V8DOMWrapper::lookupDOMWrapper(V8DOMWindow::GetTemplate(), global); - ASSERT(!global.IsEmpty()); - - setHiddenReference(global, jsObject); -} - -WrapperTypeInfo* V8DOMWrapper::domWrapperType(v8::Handle<v8::Object> object) -{ - ASSERT(V8DOMWrapper::maybeDOMWrapper(object)); - return static_cast<WrapperTypeInfo*>(object->GetPointerFromInternalField(v8DOMWrapperTypeIndex)); -} - -PassRefPtr<NodeFilter> V8DOMWrapper::wrapNativeNodeFilter(v8::Handle<v8::Value> filter) -{ - // A NodeFilter is used when walking through a DOM tree or iterating tree - // nodes. - // FIXME: we may want to cache NodeFilterCondition and NodeFilter - // object, but it is minor. - // NodeFilter is passed to NodeIterator that has a ref counted pointer - // to NodeFilter. NodeFilter has a ref counted pointer to NodeFilterCondition. - // In NodeFilterCondition, filter object is persisted in its constructor, - // and disposed in its destructor. - return NodeFilter::create(V8NodeFilterCondition::create(filter)); -} - -static bool globalObjectPrototypeIsDOMWindow(v8::Handle<v8::Object> objectPrototype) -{ - // We can identify what type of context the global object is wrapping by looking at the - // internal field count of its prototype. This assumes WorkerContexts and DOMWindows have different numbers - // of internal fields, so a COMPILE_ASSERT is included to warn if this ever changes. -#if ENABLE(WORKERS) - COMPILE_ASSERT(V8DOMWindow::internalFieldCount != V8WorkerContext::internalFieldCount, - DOMWindowAndWorkerContextHaveUnequalFieldCounts); - COMPILE_ASSERT(V8DOMWindow::internalFieldCount != V8DedicatedWorkerContext::internalFieldCount, - DOMWindowAndDedicatedWorkerContextHaveUnequalFieldCounts); -#endif -#if ENABLE(SHARED_WORKERS) - COMPILE_ASSERT(V8DOMWindow::internalFieldCount != V8SharedWorkerContext::internalFieldCount, - DOMWindowAndSharedWorkerContextHaveUnequalFieldCounts); -#endif - return objectPrototype->InternalFieldCount() == V8DOMWindow::internalFieldCount; -} - -v8::Local<v8::Object> V8DOMWrapper::instantiateV8Object(V8Proxy* proxy, WrapperTypeInfo* type, void* impl) -{ - WorkerContext* workerContext = 0; - if (V8IsolatedContext::getEntered()) { - // This effectively disables the wrapper cache for isolated worlds. - proxy = 0; - // FIXME: Do we need a wrapper cache for the isolated world? We should - // see if the performance gains are worth while. - // We'll get one once we give the isolated context a proper window shell. - } else if (!proxy) { - v8::Handle<v8::Context> context = v8::Context::GetCurrent(); - if (!context.IsEmpty()) { - v8::Handle<v8::Object> globalPrototype = v8::Handle<v8::Object>::Cast(context->Global()->GetPrototype()); - if (globalObjectPrototypeIsDOMWindow(globalPrototype)) - proxy = V8Proxy::retrieve(V8DOMWindow::toNative(globalPrototype)->frame()); -#if ENABLE(WORKERS) - else - workerContext = V8WorkerContext::toNative(lookupDOMWrapper(V8WorkerContext::GetTemplate(), context->Global())); -#endif - } - } - - v8::Local<v8::Object> instance; - if (proxy) - // FIXME: Fix this to work properly with isolated worlds (see above). - instance = proxy->windowShell()->createWrapperFromCache(type); - else { - v8::Local<v8::Function> function; -#if ENABLE(WORKERS) - if (workerContext) - function = getConstructor(type, workerContext); - else -#endif - function = type->getTemplate()->GetFunction(); - instance = SafeAllocation::newInstance(function); - } - if (!instance.IsEmpty()) { - // Avoid setting the DOM wrapper for failed allocations. - setDOMWrapper(instance, type, impl); - if (type == &V8HTMLDocument::info) - instance = V8HTMLDocument::WrapInShadowObject(instance, static_cast<Node*>(impl)); - } - return instance; -} - -#ifndef NDEBUG -bool V8DOMWrapper::maybeDOMWrapper(v8::Handle<v8::Value> value) -{ - if (value.IsEmpty() || !value->IsObject()) - return false; - - v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(value); - if (!object->InternalFieldCount()) - return false; - - ASSERT(object->InternalFieldCount() >= v8DefaultWrapperInternalFieldCount); - - v8::Handle<v8::Value> wrapper = object->GetInternalField(v8DOMWrapperObjectIndex); - ASSERT(wrapper->IsNumber() || wrapper->IsExternal()); - - return true; -} -#endif - -bool V8DOMWrapper::isValidDOMObject(v8::Handle<v8::Value> value) -{ - if (value.IsEmpty() || !value->IsObject()) - return false; - return v8::Handle<v8::Object>::Cast(value)->InternalFieldCount(); -} - -bool V8DOMWrapper::isWrapperOfType(v8::Handle<v8::Value> value, WrapperTypeInfo* type) -{ - if (!isValidDOMObject(value)) - return false; - - v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(value); - ASSERT(object->InternalFieldCount() >= v8DefaultWrapperInternalFieldCount); - - v8::Handle<v8::Value> wrapper = object->GetInternalField(v8DOMWrapperObjectIndex); - ASSERT(wrapper->IsNumber() || wrapper->IsExternal()); - - WrapperTypeInfo* typeInfo = static_cast<WrapperTypeInfo*>(object->GetPointerFromInternalField(v8DOMWrapperTypeIndex)); - return typeInfo == type; -} - -v8::Handle<v8::Object> V8DOMWrapper::getWrapperSlow(Node* node) -{ - V8IsolatedContext* context = V8IsolatedContext::getEntered(); - if (LIKELY(!context)) { - v8::Persistent<v8::Object>* wrapper = node->wrapper(); - if (!wrapper) - return v8::Handle<v8::Object>(); - return *wrapper; - } - DOMNodeMapping& domNodeMap = context->world()->domDataStore()->domNodeMap(); - return domNodeMap.get(node); -} - -// A JS object of type EventTarget is limited to a small number of possible classes. -// Check EventTarget.h for new type conversion methods -v8::Handle<v8::Value> V8DOMWrapper::convertEventTargetToV8Object(EventTarget* target) -{ - if (!target) - return v8::Null(); - -#if ENABLE(SVG) - if (SVGElementInstance* instance = target->toSVGElementInstance()) - return toV8(instance); -#endif - -#if ENABLE(WORKERS) - if (Worker* worker = target->toWorker()) - return toV8(worker); - - if (DedicatedWorkerContext* workerContext = target->toDedicatedWorkerContext()) - return toV8(workerContext); -#endif // WORKERS - -#if ENABLE(SHARED_WORKERS) - if (SharedWorker* sharedWorker = target->toSharedWorker()) - return toV8(sharedWorker); - - if (SharedWorkerContext* sharedWorkerContext = target->toSharedWorkerContext()) - return toV8(sharedWorkerContext); -#endif // SHARED_WORKERS - -#if ENABLE(NOTIFICATIONS) - if (Notification* notification = target->toNotification()) - return toV8(notification); -#endif - -#if ENABLE(INDEXED_DATABASE) - if (IDBRequest* idbRequest = target->toIDBRequest()) - return toV8(idbRequest); - if (IDBTransaction* idbTransaction = target->toIDBTransaction()) - return toV8(idbTransaction); -#endif - -#if ENABLE(WEB_SOCKETS) - if (WebSocket* webSocket = target->toWebSocket()) - return toV8(webSocket); -#endif - - if (Node* node = target->toNode()) - return toV8(node); - - if (DOMWindow* domWindow = target->toDOMWindow()) - return toV8(domWindow); - - // XMLHttpRequest is created within its JS counterpart. - if (XMLHttpRequest* xmlHttpRequest = target->toXMLHttpRequest()) { - v8::Handle<v8::Object> wrapper = getActiveDOMObjectMap().get(xmlHttpRequest); - ASSERT(!wrapper.IsEmpty()); - return wrapper; - } - - // MessagePort is created within its JS counterpart - if (MessagePort* port = target->toMessagePort()) { - v8::Handle<v8::Object> wrapper = getActiveDOMObjectMap().get(port); - ASSERT(!wrapper.IsEmpty()); - return wrapper; - } - - if (XMLHttpRequestUpload* upload = target->toXMLHttpRequestUpload()) { - v8::Handle<v8::Object> wrapper = getDOMObjectMap().get(upload); - ASSERT(!wrapper.IsEmpty()); - return wrapper; - } - -#if ENABLE(OFFLINE_WEB_APPLICATIONS) - if (DOMApplicationCache* domAppCache = target->toDOMApplicationCache()) - return toV8(domAppCache); -#endif - -#if ENABLE(EVENTSOURCE) - if (EventSource* eventSource = target->toEventSource()) - return toV8(eventSource); -#endif - -#if ENABLE(BLOB) - if (FileReader* fileReader = target->toFileReader()) - return toV8(fileReader); -#endif - -#if ENABLE(FILE_SYSTEM) - if (FileWriter* fileWriter = target->toFileWriter()) - return toV8(fileWriter); -#endif - -#if ENABLE(WEB_AUDIO) - if (JavaScriptAudioNode* jsAudioNode = target->toJavaScriptAudioNode()) - return toV8(jsAudioNode); -#endif - - ASSERT(0); - return notHandledByInterceptor(); -} - -PassRefPtr<EventListener> V8DOMWrapper::getEventListener(v8::Local<v8::Value> value, bool isAttribute, ListenerLookupType lookup) -{ - v8::Handle<v8::Context> context = v8::Context::GetCurrent(); - if (context.IsEmpty()) - return 0; - if (lookup == ListenerFindOnly) - return V8EventListenerList::findWrapper(value, isAttribute); - v8::Handle<v8::Object> globalPrototype = v8::Handle<v8::Object>::Cast(context->Global()->GetPrototype()); - if (globalObjectPrototypeIsDOMWindow(globalPrototype)) - return V8EventListenerList::findOrCreateWrapper<V8EventListener>(value, isAttribute); -#if ENABLE(WORKERS) - return V8EventListenerList::findOrCreateWrapper<V8WorkerContextEventListener>(value, isAttribute); -#else - return 0; -#endif -} - -#if ENABLE(XPATH) -// XPath-related utilities -RefPtr<XPathNSResolver> V8DOMWrapper::getXPathNSResolver(v8::Handle<v8::Value> value, V8Proxy* proxy) -{ - RefPtr<XPathNSResolver> resolver; - if (V8XPathNSResolver::HasInstance(value)) - resolver = V8XPathNSResolver::toNative(v8::Handle<v8::Object>::Cast(value)); - else if (value->IsObject()) - resolver = V8CustomXPathNSResolver::create(value->ToObject()); - return resolver; -} -#endif - -} // namespace WebCore |