1 /* 2 * Copyright (C) 2010 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. 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 #ifndef ResponsivenessTimer_h 27 #define ResponsivenessTimer_h 28 29 #include "RunLoop.h" 30 31 namespace WebKit { 32 33 class ResponsivenessTimer { 34 public: 35 class Client { 36 public: ~Client()37 virtual ~Client() { } 38 virtual void didBecomeUnresponsive(ResponsivenessTimer*) = 0; 39 virtual void didBecomeResponsive(ResponsivenessTimer*) = 0; 40 }; 41 42 ResponsivenessTimer(ResponsivenessTimer::Client*); 43 ~ResponsivenessTimer(); 44 45 void start(); 46 void stop(); 47 48 void invalidate(); 49 isResponsive()50 bool isResponsive() { return m_isResponsive; } 51 52 private: 53 void timerFired(); 54 55 ResponsivenessTimer::Client* m_client; 56 bool m_isResponsive; 57 58 RunLoop::Timer<ResponsivenessTimer> m_timer; 59 }; 60 61 } // namespace WebKit 62 63 #endif // ResponsivenessTimer_h 64 65