1 /* 2 * Copyright (C) 2010 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. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef ScriptRunner_h 27 #define ScriptRunner_h 28 29 #include "CachedResourceHandle.h" 30 #include "Timer.h" 31 #include <wtf/Noncopyable.h> 32 #include <wtf/PassRefPtr.h> 33 #include <wtf/Vector.h> 34 35 namespace WebCore { 36 37 class CachedScript; 38 class Document; 39 class PendingScript; 40 class ScriptElement; 41 42 class ScriptRunner { 43 WTF_MAKE_NONCOPYABLE(ScriptRunner); WTF_MAKE_FAST_ALLOCATED; 44 public: create(Document * document)45 static PassOwnPtr<ScriptRunner> create(Document* document) { return new ScriptRunner(document); } 46 ~ScriptRunner(); 47 48 enum ExecutionType { ASYNC_EXECUTION, IN_ORDER_EXECUTION }; 49 void queueScriptForExecution(ScriptElement*, CachedResourceHandle<CachedScript>, ExecutionType); hasPendingScripts()50 bool hasPendingScripts() const { return !m_scriptsToExecuteSoon.isEmpty() || !m_scriptsToExecuteInOrder.isEmpty(); } 51 void suspend(); 52 void resume(); 53 void notifyInOrderScriptReady(); 54 55 private: 56 ScriptRunner(Document*); 57 58 void timerFired(Timer<ScriptRunner>*); 59 60 Document* m_document; 61 Vector<PendingScript> m_scriptsToExecuteInOrder; 62 Vector<PendingScript> m_scriptsToExecuteSoon; // http://www.whatwg.org/specs/web-apps/current-work/#set-of-scripts-that-will-execute-as-soon-as-possible 63 Timer<ScriptRunner> m_timer; 64 }; 65 66 } 67 68 #endif 69