1/* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include "config.h" 32#include "bindings/core/v8/V8MutationObserver.h" 33 34#include "bindings/core/v8/ExceptionMessages.h" 35#include "bindings/core/v8/ExceptionState.h" 36#include "bindings/core/v8/V8Binding.h" 37#include "bindings/core/v8/V8DOMWrapper.h" 38#include "bindings/core/v8/V8GCController.h" 39#include "bindings/core/v8/V8MutationCallback.h" 40#include "core/dom/MutationObserver.h" 41#include "core/dom/Node.h" 42 43namespace blink { 44 45void V8MutationObserver::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info) 46{ 47 ExceptionState exceptionState(ExceptionState::ConstructionContext, "MutationObserver", info.Holder(), info.GetIsolate()); 48 if (info.Length() < 1) { 49 exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(1, info.Length())); 50 exceptionState.throwIfNeeded(); 51 return; 52 } 53 54 v8::Local<v8::Value> arg = info[0]; 55 if (!arg->IsFunction()) { 56 exceptionState.throwTypeError("Callback argument must be a function"); 57 exceptionState.throwIfNeeded(); 58 return; 59 } 60 61 v8::Handle<v8::Object> wrapper = info.Holder(); 62 63 OwnPtr<MutationCallback> callback = V8MutationCallback::create(v8::Handle<v8::Function>::Cast(arg), wrapper, ScriptState::current(info.GetIsolate())); 64 RefPtrWillBeRawPtr<MutationObserver> observer = MutationObserver::create(callback.release()); 65 66 V8DOMWrapper::associateObjectWithWrapper<V8MutationObserver>(observer.release(), &wrapperTypeInfo, wrapper, info.GetIsolate()); 67 info.GetReturnValue().Set(wrapper); 68} 69 70void V8MutationObserver::visitDOMWrapper(ScriptWrappableBase* internalPointer, const v8::Persistent<v8::Object>& wrapper, v8::Isolate* isolate) 71{ 72 MutationObserver* observer = internalPointer->toImpl<MutationObserver>(); 73 WillBeHeapHashSet<RawPtrWillBeMember<Node> > observedNodes = observer->getObservedNodes(); 74 for (WillBeHeapHashSet<RawPtrWillBeMember<Node> >::iterator it = observedNodes.begin(); it != observedNodes.end(); ++it) { 75 v8::UniqueId id(reinterpret_cast<intptr_t>(V8GCController::opaqueRootForGC(*it, isolate))); 76 isolate->SetReferenceFromGroup(id, wrapper); 77 } 78} 79 80} // namespace blink 81