| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_TIMEOUT_MONITOR_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_INPUT_TIMEOUT_MONITOR_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/callback.h" |
| #include "base/time/time.h" |
| #include "base/timer/timer.h" |
| #include "content/common/content_export.h" |
| |
| namespace content { |
| |
| // Utility class for handling a timeout callback with periodic starts and stops. |
| class CONTENT_EXPORT TimeoutMonitor { |
| public: |
| typedef base::Closure TimeoutHandler; |
| |
| explicit TimeoutMonitor(const TimeoutHandler& timeout_handler); |
| ~TimeoutMonitor(); |
| |
| // Schedule the timeout timer to fire at |delay| into the future. If a timeout |
| // has already been scheduled, reschedule only if |delay| is sooner than the |
| // currently scheduled timeout time. |
| void Start(base::TimeDelta delay); |
| |
| void Restart(base::TimeDelta delay); |
| void Stop(); |
| bool IsRunning() const; |
| |
| private: |
| void CheckTimedOut(); |
| |
| TimeoutHandler timeout_handler_; |
| |
| // Indicates a time in the future when we would consider the input as |
| // having timed out, if it does not receive an appropriate stop request. |
| base::Time time_when_considered_timed_out_; |
| |
| // This timer runs to check if |time_when_considered_timed_out_| has past. |
| base::OneShotTimer<TimeoutMonitor> timeout_timer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TimeoutMonitor); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_TIMEOUT_MONITOR_H_ |