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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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