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/v8/ExceptionMessages.h" 35 #include "bindings/v8/ExceptionState.h" 36 #include "bindings/v8/V8Binding.h" 37 #include "bindings/v8/V8DOMWrapper.h" 38 #include "bindings/v8/V8GCController.h" 39 #include "bindings/v8/V8MutationCallback.h" 40 #include "core/dom/MutationObserver.h" 41 42 namespace WebCore { 43 44 void V8MutationObserver::constructorCustom(const v8::FunctionCallbackInfo<v8::Value>& info) 45 { 46 ExceptionState exceptionState(ExceptionState::ConstructionContext, "MutationObserver", info.Holder(), info.GetIsolate()); 47 if (info.Length() < 1) { 48 exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(1, info.Length())); 49 exceptionState.throwIfNeeded(); 50 return; 51 } 52 53 v8::Local<v8::Value> arg = info[0]; 54 if (!arg->IsFunction()) { 55 exceptionState.throwTypeError("Callback argument must be a function"); 56 exceptionState.throwIfNeeded(); 57 return; 58 } 59 60 v8::Handle<v8::Object> wrapper = info.Holder(); 61 62 OwnPtr<MutationCallback> callback = V8MutationCallback::create(v8::Handle<v8::Function>::Cast(arg), wrapper, ScriptState::current(info.GetIsolate())); 63 RefPtrWillBeRawPtr<MutationObserver> observer = MutationObserver::create(callback.release()); 64 65 V8DOMWrapper::associateObjectWithWrapper<V8MutationObserver>(observer.release(), &wrapperTypeInfo, wrapper, info.GetIsolate(), WrapperConfiguration::Dependent); 66 info.GetReturnValue().Set(wrapper); 67 } 68 69 void V8MutationObserver::visitDOMWrapper(void* object, const v8::Persistent<v8::Object>& wrapper, v8::Isolate* isolate) 70 { 71 MutationObserver* observer = static_cast<MutationObserver*>(object); 72 HashSet<Node*> observedNodes = observer->getObservedNodes(); 73 for (HashSet<Node*>::iterator it = observedNodes.begin(); it != observedNodes.end(); ++it) { 74 v8::UniqueId id(reinterpret_cast<intptr_t>(V8GCController::opaqueRootForGC(*it, isolate))); 75 isolate->SetReferenceFromGroup(id, wrapper); 76 } 77 } 78 79 } // namespace WebCore 80
