michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: //
michael@0: // nsRepeatService
michael@0: //
michael@0: #ifndef nsRepeatService_h__
michael@0: #define nsRepeatService_h__
michael@0: 
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsITimer.h"
michael@0: 
michael@0: #define INITAL_REPEAT_DELAY 250
michael@0: 
michael@0: #ifdef XP_MACOSX
michael@0: #define REPEAT_DELAY        25
michael@0: #else
michael@0: #define REPEAT_DELAY        50
michael@0: #endif
michael@0: 
michael@0: class nsITimer;
michael@0: 
michael@0: class nsRepeatService : public nsITimerCallback
michael@0: {
michael@0: public:
michael@0: 
michael@0:   typedef void (* Callback)(void* aData);
michael@0:     
michael@0:   NS_DECL_NSITIMERCALLBACK
michael@0: 
michael@0:   // Start dispatching timer events to the callback. There is no memory
michael@0:   // management of aData here; it is the caller's responsibility to call
michael@0:   // Stop() before aData's memory is released.
michael@0:   void Start(Callback aCallback, void* aData,
michael@0:              uint32_t aInitialDelay = INITAL_REPEAT_DELAY);
michael@0:   // Stop dispatching timer events to the callback. If the repeat service
michael@0:   // is not currently configured with the given callback and data, this
michael@0:   // is just ignored.
michael@0:   void Stop(Callback aCallback, void* aData);
michael@0: 
michael@0:   static nsRepeatService* GetInstance();
michael@0:   static void Shutdown();
michael@0: 
michael@0:   NS_DECL_ISUPPORTS
michael@0:   virtual ~nsRepeatService();
michael@0: 
michael@0: protected:
michael@0:   nsRepeatService();
michael@0: 
michael@0: private:
michael@0:   Callback           mCallback;
michael@0:   void*              mCallbackData;
michael@0:   nsCOMPtr<nsITimer> mRepeatTimer;
michael@0:   static nsRepeatService* gInstance;
michael@0: 
michael@0: }; // class nsRepeatService
michael@0: 
michael@0: #endif