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 27#include "config.h" 28#include "JSMutationCallback.h" 29 30#include "JSDOMGlobalObject.h" 31#include "JSMainThreadExecState.h" 32#include "JSMutationObserver.h" 33#include "JSMutationRecord.h" 34#include "ScriptExecutionContext.h" 35#include <heap/WeakInlines.h> 36#include <runtime/JSLock.h> 37 38using namespace JSC; 39 40namespace WebCore { 41 42JSMutationCallback::JSMutationCallback(JSObject* callback, JSDOMGlobalObject* globalObject) 43 : ActiveDOMCallback(globalObject->scriptExecutionContext()) 44 , m_callback(PassWeak<JSObject>(callback)) 45 , m_isolatedWorld(globalObject->world()) 46{ 47} 48 49JSMutationCallback::~JSMutationCallback() 50{ 51} 52 53void JSMutationCallback::call(const Vector<RefPtr<MutationRecord> >& mutations, MutationObserver* observer) 54{ 55 if (!canInvokeCallback()) 56 return; 57 58 RefPtr<JSMutationCallback> protect(this); 59 60 JSLockHolder lock(m_isolatedWorld->vm()); 61 62 if (!m_callback) 63 return; 64 65 JSValue callback = m_callback.get(); 66 CallData callData; 67 CallType callType = getCallData(callback, callData); 68 if (callType == CallTypeNone) { 69 ASSERT_NOT_REACHED(); 70 return; 71 } 72 73 ScriptExecutionContext* context = scriptExecutionContext(); 74 if (!context) 75 return; 76 ASSERT(context->isDocument()); 77 78 JSDOMGlobalObject* globalObject = toJSDOMGlobalObject(context, m_isolatedWorld.get()); 79 ExecState* exec = globalObject->globalExec(); 80 81 JSValue jsObserver = toJS(exec, globalObject, observer); 82 83 MarkedArgumentBuffer args; 84 args.append(jsArray(exec, globalObject, mutations)); 85 args.append(jsObserver); 86 87 InspectorInstrumentationCookie cookie = JSMainThreadExecState::instrumentFunctionCall(context, callType, callData); 88 89 JSMainThreadExecState::call(exec, callback, callType, callData, jsObserver, args); 90 91 InspectorInstrumentation::didCallFunction(cookie); 92 93 if (exec->hadException()) 94 reportCurrentException(exec); 95} 96 97} // namespace WebCore 98