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1 /* | |
2 * Copyright (C) 2013 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 | |
6 * are met: | |
7 * 1. Redistributions of source code must retain the above copyright | |
8 * notice, this list of conditions and the following disclaimer. | |
9 * 2. Redistributions in binary form must reproduce the above copyright | |
10 * notice, this list of conditions and the following disclaimer in the | |
11 * documentation and/or other materials provided with the distribution. | |
12 * | |
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' | |
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS | |
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
23 * THE POSSIBILITY OF SUCH DAMAGE. | |
24 */ | |
25 | |
26 #include "config.h" | |
27 #include "bindings/v8/V8MutationCallback.h" | |
28 | |
29 #include "bindings/core/v8/V8MutationObserver.h" | |
30 #include "bindings/core/v8/V8MutationRecord.h" | |
31 #include "bindings/v8/ScriptController.h" | |
32 #include "bindings/v8/V8Binding.h" | |
33 #include "bindings/v8/V8HiddenValue.h" | |
34 #include "core/dom/ExecutionContext.h" | |
35 #include "wtf/Assertions.h" | |
36 | |
37 namespace WebCore { | |
38 | |
39 V8MutationCallback::V8MutationCallback(v8::Handle<v8::Function> callback, v8::Ha
ndle<v8::Object> owner, ScriptState* scriptState) | |
40 : ActiveDOMCallback(scriptState->executionContext()) | |
41 , m_callback(scriptState->isolate(), callback) | |
42 , m_scriptState(scriptState) | |
43 { | |
44 V8HiddenValue::setHiddenValue(scriptState->isolate(), owner, V8HiddenValue::
callback(scriptState->isolate()), callback); | |
45 m_callback.setWeak(this, &setWeakCallback); | |
46 } | |
47 | |
48 void V8MutationCallback::call(const WillBeHeapVector<RefPtrWillBeMember<Mutation
Record> >& mutations, MutationObserver* observer) | |
49 { | |
50 if (!canInvokeCallback()) | |
51 return; | |
52 | |
53 v8::Isolate* isolate = m_scriptState->isolate(); | |
54 | |
55 if (m_scriptState->contextIsEmpty()) | |
56 return; | |
57 ScriptState::Scope scope(m_scriptState.get()); | |
58 | |
59 if (m_callback.isEmpty()) | |
60 return; | |
61 v8::Handle<v8::Value> observerHandle = toV8(observer, m_scriptState->context
()->Global(), isolate); | |
62 if (observerHandle.IsEmpty()) { | |
63 if (!isScriptControllerTerminating()) | |
64 CRASH(); | |
65 return; | |
66 } | |
67 | |
68 if (!observerHandle->IsObject()) | |
69 return; | |
70 | |
71 v8::Handle<v8::Object> thisObject = v8::Handle<v8::Object>::Cast(observerHan
dle); | |
72 v8::Handle<v8::Value> argv[] = { v8Array(mutations, m_scriptState->context()
->Global(), isolate), observerHandle }; | |
73 | |
74 v8::TryCatch exceptionCatcher; | |
75 exceptionCatcher.SetVerbose(true); | |
76 ScriptController::callFunction(executionContext(), m_callback.newLocal(isola
te), thisObject, WTF_ARRAY_LENGTH(argv), argv, isolate); | |
77 } | |
78 | |
79 void V8MutationCallback::setWeakCallback(const v8::WeakCallbackData<v8::Function
, V8MutationCallback>& data) | |
80 { | |
81 data.GetParameter()->m_callback.clear(); | |
82 } | |
83 | |
84 } // namespace WebCore | |
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