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/*
* Copyright (C) 2013 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "bindings/v8/V8MutationCallback.h"
#include "V8MutationObserver.h"
#include "V8MutationRecord.h"
#include "bindings/v8/ScriptController.h"
#include "bindings/v8/V8Binding.h"
#include "bindings/v8/V8HiddenPropertyName.h"
#include "core/dom/ExecutionContext.h"
#include "wtf/Assertions.h"
namespace WebCore {
V8MutationCallback::V8MutationCallback(v8::Handle<v8::Function> callback, ExecutionContext* context, v8::Handle<v8::Object> owner, v8::Isolate* isolate)
: ActiveDOMCallback(context)
, m_callback(isolate, callback)
, m_world(DOMWrapperWorld::current())
, m_isolate(isolate)
{
owner->SetHiddenValue(V8HiddenPropertyName::callback(m_isolate), callback);
m_callback.setWeak(this, &setWeakCallback);
}
void V8MutationCallback::call(const Vector<RefPtr<MutationRecord> >& mutations, MutationObserver* observer)
{
if (!canInvokeCallback())
return;
v8::HandleScope handleScope(m_isolate);
v8::Handle<v8::Context> v8Context = toV8Context(executionContext(), m_world.get());
if (v8Context.IsEmpty())
return;
v8::Context::Scope scope(v8Context);
v8::Handle<v8::Function> callback = m_callback.newLocal(m_isolate);
if (callback.IsEmpty())
return;
v8::Handle<v8::Value> observerHandle = toV8(observer, v8::Handle<v8::Object>(), m_isolate);
if (observerHandle.IsEmpty()) {
if (!isScriptControllerTerminating())
CRASH();
return;
}
if (!observerHandle->IsObject())
return;
v8::Handle<v8::Object> thisObject = v8::Handle<v8::Object>::Cast(observerHandle);
v8::Handle<v8::Value> argv[] = { v8Array(mutations, m_isolate), observerHandle };
v8::TryCatch exceptionCatcher;
exceptionCatcher.SetVerbose(true);
ScriptController::callFunction(executionContext(), callback, thisObject, 2, argv, m_isolate);
}
void V8MutationCallback::setWeakCallback(const v8::WeakCallbackData<v8::Function, V8MutationCallback>& data)
{
data.GetParameter()->m_callback.clear();
}
} // namespace WebCore
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