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// 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 <list>
#include <wtf/HashSet.h>
#include "v8.h"
#include "v8_index.h"
namespace WebCore {
class Event;
class EventTarget;
class V8EventListener;
class WorkerContext;
class WorkerContextExecutionProxy {
public:
WorkerContextExecutionProxy(WorkerContext*);
~WorkerContextExecutionProxy();
// Returns a local handle of the context.
v8::Local<v8::Context> GetContext() {
return v8::Local<v8::Context>::New(m_context);
}
// Returns the dom constructor function for the given node type.
v8::Local<v8::Function> GetConstructor(V8ClassIndex::V8WrapperType t);
// Finds or creates an event listener;
PassRefPtr<V8EventListener> FindOrCreateEventListener(
v8::Local<v8::Value> listener, bool is_inline, bool find_only);
// Removes an event listener;
void RemoveEventListener(V8EventListener* listener);
// 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* event);
// Evaluate a script file in the current execution environment.
v8::Local<v8::Value> Evaluate(const String& str,
const String& file_name,
int base_line);
// Returns WorkerContext object.
WorkerContext* worker_context() { return m_workerContext; }
// Returns WorkerContextExecutionProxy object of the currently executing
// context.
static WorkerContextExecutionProxy* retrieve();
// Returns the JS wrapper of object.
static v8::Handle<v8::Value> ToV8Object(V8ClassIndex::V8WrapperType type,
void* imp);
static v8::Handle<v8::Value> EventToV8Object(Event* event);
static v8::Handle<v8::Value> EventTargetToV8Object(EventTarget* target);
static v8::Handle<v8::Value> WorkerContextToV8Object(WorkerContext* wc);
private:
void InitContextIfNeeded();
void Dispose();
// Run an already compiled script.
v8::Local<v8::Value> RunScript(v8::Handle<v8::Script> script);
static v8::Local<v8::Object> InstantiateV8Object(
V8ClassIndex::V8WrapperType desc_type,
V8ClassIndex::V8WrapperType cptr_type,
void* impl);
static bool ForgetV8EventObject(Event* event);
WorkerContext* m_workerContext;
v8::Persistent<v8::Context> m_context;
int m_recursion;
typedef std::list<V8EventListener*> EventListenerList;
EventListenerList m_listeners;
typedef HashSet<Event*> EventSet;
EventSet m_events;
};
} // namespace WebCore
#endif // ENABLE(WORKERS)
#endif // WorkerContextExecutionProxy_h_
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