/* * Copyright (C) 2008 Apple Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef DOMTimer_h #define DOMTimer_h #include "SuspendableTimer.h" #include <memory> #include <wtf/RefCounted.h> namespace WebCore { class HTMLPlugInElement; class ScheduledAction; class DOMTimer final : public RefCounted<DOMTimer>, public SuspendableTimer { WTF_MAKE_NONCOPYABLE(DOMTimer); WTF_MAKE_FAST_ALLOCATED; public: // Creates a new timer owned by specified ScriptExecutionContext, starts it // and returns its Id. static int install(ScriptExecutionContext*, std::unique_ptr<ScheduledAction>, int timeout, bool singleShot); static void removeById(ScriptExecutionContext*, int timeoutId); // Notify that the interval may need updating (e.g. because the minimum interval // setting for the context has changed). void updateTimerIntervalIfNecessary(); static void scriptDidInteractWithPlugin(HTMLPlugInElement&); private: DOMTimer(ScriptExecutionContext*, std::unique_ptr<ScheduledAction>, int interval, bool singleShot); double intervalClampedToMinimum() const; // SuspendableTimer virtual void fired() override; virtual void didStop() override; virtual double alignedFireTime(double) const override; enum TimerThrottleState { Undetermined, ShouldThrottle, ShouldNotThrottle }; int m_timeoutId; int m_nestingLevel; std::unique_ptr<ScheduledAction> m_action; int m_originalInterval; TimerThrottleState m_throttleState; double m_currentTimerInterval; bool m_shouldForwardUserGesture; }; } // namespace WebCore #endif // DOMTimer_h