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       1             : /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef WEBGL_CONTEXT_LOSS_HANDLER_H_
       7             : #define WEBGL_CONTEXT_LOSS_HANDLER_H_
       8             : 
       9             : #include "mozilla/WeakPtr.h"
      10             : #include "nsCOMPtr.h"
      11             : 
      12             : class nsIThread;
      13             : class nsITimer;
      14             : 
      15             : namespace mozilla {
      16             : class WebGLContext;
      17             : 
      18             : class WebGLContextLossHandler final : public SupportsWeakPtr<WebGLContextLossHandler>
      19             : {
      20             :     WebGLContext* const mWebGL;
      21             :     const nsCOMPtr<nsITimer> mTimer; // If we don't hold a ref to the timer, it will think
      22             :     bool mTimerPending;              // that it's been discarded, and be canceled 'for our
      23             :     bool mShouldRunTimerAgain;       // convenience'.
      24             : #ifdef DEBUG
      25             :     nsISerialEventTarget* const mEventTarget;
      26             : #endif
      27             : 
      28             :     friend class WatchdogTimerEvent;
      29             : 
      30             : public:
      31           0 :     MOZ_DECLARE_WEAKREFERENCE_TYPENAME(WebGLContextLossHandler)
      32             : 
      33             :     explicit WebGLContextLossHandler(WebGLContext* webgl);
      34             :     ~WebGLContextLossHandler();
      35             : 
      36             :     void RunTimer();
      37             : 
      38             : private:
      39             :     void TimerCallback();
      40             : };
      41             : 
      42             : } // namespace mozilla
      43             : 
      44             : #endif // WEBGL_CONTEXT_LOSS_HANDLER_H_