| /* |
| * Copyright (C) 2006, 2007, 2008, 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" |
| |
| #if ENABLE(WORKERS) |
| |
| #include "V8WorkerContextEventListener.h" |
| |
| #include "V8Binding.h" |
| #include "V8DOMWrapper.h" |
| #include "V8Event.h" |
| #include "WorkerContext.h" |
| #include "WorkerContextExecutionProxy.h" |
| |
| namespace WebCore { |
| |
| static WorkerContextExecutionProxy* workerProxy(ScriptExecutionContext* context) |
| { |
| ASSERT(context->isWorkerContext()); |
| WorkerContext* workerContext = static_cast<WorkerContext*>(context); |
| return workerContext->script()->proxy(); |
| } |
| |
| V8WorkerContextEventListener::V8WorkerContextEventListener(v8::Local<v8::Object> listener, bool isInline, const WorldContextHandle& worldContext) |
| : V8EventListener(listener, isInline, worldContext) |
| { |
| } |
| |
| void V8WorkerContextEventListener::handleEvent(ScriptExecutionContext* context, Event* event) |
| { |
| if (!context) |
| return; |
| |
| // The callback function on XMLHttpRequest can clear the event listener and destroys 'this' object. Keep a local reference to it. |
| // See issue 889829. |
| RefPtr<V8AbstractEventListener> protect(this); |
| |
| v8::HandleScope handleScope; |
| |
| WorkerContextExecutionProxy* proxy = workerProxy(context); |
| if (!proxy) |
| return; |
| |
| v8::Handle<v8::Context> v8Context = proxy->context(); |
| if (v8Context.IsEmpty()) |
| return; |
| |
| // Enter the V8 context in which to perform the event handling. |
| v8::Context::Scope scope(v8Context); |
| |
| // Get the V8 wrapper for the event object. |
| v8::Handle<v8::Value> jsEvent = toV8(event); |
| |
| invokeEventHandler(context, event, jsEvent); |
| } |
| |
| v8::Local<v8::Value> V8WorkerContextEventListener::callListenerFunction(ScriptExecutionContext* context, v8::Handle<v8::Value> jsEvent, Event* event) |
| { |
| v8::Local<v8::Function> handlerFunction = getListenerFunction(context); |
| v8::Local<v8::Object> receiver = getReceiverObject(context, event); |
| if (handlerFunction.IsEmpty() || receiver.IsEmpty()) |
| return v8::Local<v8::Value>(); |
| |
| v8::Handle<v8::Value> parameters[1] = { jsEvent }; |
| v8::Local<v8::Value> result = handlerFunction->Call(receiver, 1, parameters); |
| |
| if (WorkerContextExecutionProxy* proxy = workerProxy(context)) |
| proxy->trackEvent(event); |
| |
| return result; |
| } |
| |
| v8::Local<v8::Object> V8WorkerContextEventListener::getReceiverObject(ScriptExecutionContext* context, Event* event) |
| { |
| v8::Local<v8::Object> listener = getListenerObject(context); |
| |
| if (!listener.IsEmpty() && !listener->IsFunction()) |
| return listener; |
| |
| EventTarget* target = event->currentTarget(); |
| v8::Handle<v8::Value> value = V8DOMWrapper::convertEventTargetToV8Object(target); |
| if (value.IsEmpty()) |
| return v8::Local<v8::Object>(); |
| return v8::Local<v8::Object>::New(v8::Handle<v8::Object>::Cast(value)); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // WORKERS |