/* * 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. */ #ifndef WorkerContextExecutionProxy_h #define WorkerContextExecutionProxy_h #if ENABLE(WORKERS) #include <v8.h> #include "V8EventListenerList.h" #include "V8Index.h" #include <wtf/OwnPtr.h> #include <wtf/Vector.h> namespace WebCore { class Event; class EventTarget; class V8EventListener; class V8WorkerContextEventListener; class WorkerContext; class WorkerContextExecutionProxy { public: WorkerContextExecutionProxy(WorkerContext*); ~WorkerContextExecutionProxy(); // FIXME: following function should have camelCased names once V8 code-generating script is migrated. v8::Local<v8::Context> GetContext() { return v8::Local<v8::Context>::New(m_context); } v8::Local<v8::Function> GetConstructor(V8ClassIndex::V8WrapperType); void RemoveEventListener(V8EventListener*); static v8::Handle<v8::Value> ToV8Object(V8ClassIndex::V8WrapperType type, void* impl); static v8::Handle<v8::Value> EventToV8Object(Event* event); static v8::Handle<v8::Value> EventTargetToV8Object(EventTarget* target); static v8::Handle<v8::Value> WorkerContextToV8Object(WorkerContext* wc); // Finds/creates event listener wrappers. PassRefPtr<V8EventListener> findOrCreateEventListener(v8::Local<v8::Value> listener, bool isInline, bool findOnly); PassRefPtr<V8EventListener> findOrCreateObjectEventListener(v8::Local<v8::Value> object, bool isInline, bool findOnly); // Track the event so that we can detach it from the JS wrapper when a worker // terminates. This is needed because we need to be able to dispose these // events and releases references to their event targets: WorkerContext. void trackEvent(Event*); // Evaluate a script file in the current execution environment. v8::Local<v8::Value> evaluate(const String& script, const String& fileName, int baseLine); // Returns WorkerContext object. WorkerContext* workerContext() { return m_workerContext; } // Returns WorkerContextExecutionProxy object of the currently executing context. 0 will be returned if the current executing context is not the worker context. static WorkerContextExecutionProxy* retrieve(); private: void initV8IfNeeded(); void initContextIfNeeded(); void dispose(); PassRefPtr<V8EventListener> findOrCreateEventListenerHelper(v8::Local<v8::Value> object, bool isInline, bool findOnly, bool createObjectEventListener); // Run an already compiled script. v8::Local<v8::Value> runScript(v8::Handle<v8::Script>); static v8::Local<v8::Object> toV8(V8ClassIndex::V8WrapperType descType, V8ClassIndex::V8WrapperType cptrType, void* impl); static bool forgetV8EventObject(Event*); WorkerContext* m_workerContext; v8::Persistent<v8::Context> m_context; int m_recursion; OwnPtr<V8EventListenerList> m_listeners; Vector<Event*> m_events; }; } // namespace WebCore #endif // ENABLE(WORKERS) #endif // WorkerContextExecutionProxy_h