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