| /* |
| * 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.makeWeak(this, &makeWeakCallback); |
| } |
| |
| 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::makeWeakCallback(v8::Isolate*, v8::Persistent<v8::Function>*, V8MutationCallback* callback) |
| { |
| callback->m_callback.clear(); |
| } |
| |
| } // namespace WebCore |