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
43 namespace blink {
44
constructorCustom(const v8::FunctionCallbackInfo<v8::Value> & info)45 void 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
visitDOMWrapper(ScriptWrappableBase * internalPointer,const v8::Persistent<v8::Object> & wrapper,v8::Isolate * isolate)70 void 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