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 "core/platform/Timer.h" 32 33 namespace WebCore { 34 35 class SuspendableTimer : public TimerBase, public ActiveDOMObject { 36 public: 37 explicit SuspendableTimer(ScriptExecutionContext*); 38 virtual ~SuspendableTimer(); 39 40 // ActiveDOMObject 41 virtual bool hasPendingActivity() const; 42 virtual void stop(); 43 virtual bool canSuspend() const; 44 virtual void suspend(ReasonForSuspension); 45 virtual void resume(); 46 47 private: 48 virtual void fired() = 0; 49 50 double m_nextFireInterval; 51 double m_repeatInterval; 52 bool m_active; 53 #if !ASSERT_DISABLED 54 bool m_suspended; 55 #endif 56 }; 57 58 } // namespace WebCore 59 60 #endif // SuspendableTimer_h 61 62
