author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 08:46:30 +0200 | |
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/* |
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: Implements the buffer timeout logic specific to the speech item |
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* trainer. Is notified about the speech item trainer action requests, |
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* and decides when to actually fire the buffered actions |
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* |
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*/ |
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#ifndef NSSVASCTRAININGACTIONTRACKER_H |
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#define NSSVASCTRAININGACTIONTRACKER_H |
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#include <e32base.h> |
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/** |
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* An interface for the objects to be notifiable by the CNssTrainingActionTracker |
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*/ |
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class MDelayedNotifiable |
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{ |
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public: |
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virtual void RunBufferedActionsL() = 0; |
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}; |
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/** |
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* Implements the buffer timeout logic specific to the speech item |
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* trainer. Is notified about the speech item trainer action requests, |
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* and decides when to actually fire the buffered actions |
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*/ |
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NONSHARABLE_CLASS( CNssTrainingActionTracker ) : public CTimer |
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{ |
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public: |
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static CNssTrainingActionTracker* NewL( MDelayedNotifiable& aNotifiable ); |
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/** |
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* Is called by the client to notify tracker about the request to |
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* perform a potentially bufferable action. It is up to tracker |
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* when to stop recording the action requests and fire the |
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* delayed actions via MDelayedNotifiable::DoBufferedActionsL |
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* |
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* DoBufferedActionsL is always called asynchronously. Even if tracker |
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* decides to fire the delayable actions immediately |
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*/ |
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void ActionRequestedL(); |
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~CNssTrainingActionTracker(); |
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protected: |
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// Fired when timer is expired |
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void RunL(); |
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private: |
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CNssTrainingActionTracker( MDelayedNotifiable& aNotifiable ); |
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void ConstructL(); |
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/** |
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* static callback required by CAsyncCallBack* iAsyncCallback |
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* @param pX A pointer to this object |
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*/ |
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static TInt FireActionsImmediately( TAny* pX ); |
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/** |
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* Call back the host |
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*/ |
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void DoFireActionsL(); |
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/** |
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* Another action requested. Start waiting [again] |
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*/ |
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void RestartTimer(); |
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private: |
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// Observer |
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MDelayedNotifiable& iHost; |
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// Utility for firing the action immediately, but asynchronously |
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CAsyncCallBack* iAsyncCallback; |
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// ETrue when tracker has some actions to fire in the queue |
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TBool iUnfiredActions; |
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}; |
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#endif // NSSVASCTRAININGACTIONTRACKER_H |
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// End of file |