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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/core/v8/V8MutationCallback.h"
#include "bindings/core/v8/ScriptController.h"
#include "bindings/core/v8/V8Binding.h"
#include "bindings/core/v8/V8HiddenValue.h"
#include "bindings/core/v8/V8MutationObserver.h"
#include "bindings/core/v8/V8MutationRecord.h"
#include "core/dom/ExecutionContext.h"
#include "wtf/Assertions.h"
namespace blink {
V8MutationCallback::V8MutationCallback(v8::Handle<v8::Function> callback, v8::Handle<v8::Object> owner, ScriptState* scriptState)
: ActiveDOMCallback(scriptState->executionContext())
, m_callback(scriptState->isolate(), callback)
, m_scriptState(scriptState)
{
V8HiddenValue::setHiddenValue(scriptState->isolate(), owner, V8HiddenValue::callback(scriptState->isolate()), callback);
m_callback.setWeak(this, &setWeakCallback);
}
V8MutationCallback::~V8MutationCallback()
{
}
void V8MutationCallback::call(const WillBeHeapVector<RefPtrWillBeMember<MutationRecord> >& mutations, MutationObserver* observer)
{
if (!canInvokeCallback())
return;
v8::Isolate* isolate = m_scriptState->isolate();
if (!m_scriptState->contextIsValid())
return;
ScriptState::Scope scope(m_scriptState.get());
if (m_callback.isEmpty())
return;
v8::Handle<v8::Value> observerHandle = toV8(observer, m_scriptState->context()->Global(), 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[] = { toV8(mutations, m_scriptState->context()->Global(), isolate), observerHandle };
v8::TryCatch exceptionCatcher;
exceptionCatcher.SetVerbose(true);
ScriptController::callFunction(executionContext(), m_callback.newLocal(isolate), thisObject, WTF_ARRAY_LENGTH(argv), argv, isolate);
}
void V8MutationCallback::setWeakCallback(const v8::WeakCallbackData<v8::Function, V8MutationCallback>& data)
{
data.GetParameter()->m_callback.clear();
}
void V8MutationCallback::trace(Visitor* visitor)
{
MutationCallback::trace(visitor);
ActiveDOMCallback::trace(visitor);
}
} // namespace blink
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