1 /* 2 * Copyright (C) 2008 Apple 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 COMPUTER, 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 27 #ifndef SuspendableTimer_h 28 #define SuspendableTimer_h 29 30 #include "core/dom/ActiveDOMObject.h" 31 #include "platform/Timer.h" 32 33 namespace WebCore { 34 35 class SuspendableTimer : public TimerBase, public ActiveDOMObject { 36 public: 37 explicit SuspendableTimer(ExecutionContext*); 38 virtual ~SuspendableTimer(); 39 40 // ActiveDOMObject 41 virtual bool hasPendingActivity() const; 42 virtual void stop(); 43 virtual void suspend(); 44 virtual void resume(); 45 46 private: 47 virtual void fired() = 0; 48 49 double m_nextFireInterval; 50 double m_repeatInterval; 51 bool m_active; 52 #if !ASSERT_DISABLED 53 bool m_suspended; 54 #endif 55 }; 56 57 } // namespace WebCore 58 59 #endif // SuspendableTimer_h 60