author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 31 Mar 2010 21:32:56 +0300 | |
branch | RCL_3 |
changeset 8 | b2f9a76933e1 |
parent 0 | bf1d17376201 |
permissions | -rw-r--r-- |
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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: Voice command service interfaces, that are private for the |
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* : vcommand API implementation |
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* |
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*/ |
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#ifndef VCOMMANDINTERNALAPI_H |
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#define VCOMMANDINTERNALAPI_H |
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#include <e32def.h> |
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#include <e32cmn.h> |
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#include <s32strm.h> |
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#include <vcommandapi.h> |
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// context for voice commands tags |
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_LIT( KVoiceCommandContext, "COMMAND" ); |
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|
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/** |
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* VCommand with a link to the VAS. This link is a command id |
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* Stored VCommand can be played back |
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*/ |
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class CStoredVCommand : public CVCommand |
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{ |
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private: |
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// suppress inherited constructors by making them private |
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/** |
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* Factory function. Create a const snapshop of exe-ui-vastext collection |
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* @param aText Text to be trained by VAS. Can be of any length, however |
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* only first KNssVasDbTagName characters will be trained by VAS |
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* @see KNssVasDbTagName in nssvasdbkonsts.h |
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* @param aRunnable Executable to be fired when the command is recognized. |
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* VCommand takes the ownership on the aRunnable |
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* @param aUi visible strings to be displayed in VC App. VCommand takes |
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* the ownership on the aUi |
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*/ |
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static CVCommand* NewL( const TDesC& aText, const CVCRunnable& aRunnable, |
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const CVCCommandUi& aUi ); |
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/** |
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* Internalizes the command from stream |
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* @leave KErrNotSupported if the stream data format is unsupported |
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* e.g. if it has been written by newer implementation |
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*/ |
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static CVCommand* NewL( RReadStream &aStream ); |
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public: |
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// constructors with the commandId |
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/** |
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* Factory function. Create a const snapshop of exe-ui-vastext collection |
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* @param aText Text to be trained by VAS. Can be of any length, however |
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* only first KNssVasDbTagName characters will be trained by VAS |
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* @see KNssVasDbTagName in nssvasdbkonsts.h |
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* @param aRunnable Executable to be fired when the command is recognized. |
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* VCommand takes the ownership on the aRunnable |
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* @param aUi visible strings to be displayed in VC App. VCommand takes |
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* the ownership on the aUi |
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*/ |
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static CStoredVCommand* NewL( const TDesC& aText, const CVCRunnable& aRunnable, |
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const CVCCommandUi& aUi, TInt aCommandId ); |
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|
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/** |
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* Internalizes the command from stream |
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* @leave KErrNotSupported if the stream data format is unsupported |
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* e.g. if it has been written by newer implementation |
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*/ |
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static CStoredVCommand* NewL( RReadStream &aStream, TInt aCommandId ); |
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|
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/** |
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* @return CommandId |
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*/ |
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TInt CommandId() const; |
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|
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/** |
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* Attempts to play back the text expected to be recognized. |
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* To be playable command has to be added to CVCommandHandler AND |
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* then retrieved back |
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* |
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* @param aHandler CVCommandHandler where the command is stored |
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* @todo Consider storing link to CVCommandHandler within the CStoredVCommand |
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* Pros: No clumsy aHandler argument for the playback |
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* Pros: No need to remember in which handler the command is stored |
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* and why specifying storage is needed during the playback |
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* Cons: In case of internal link the linked handler should still |
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* exist. It cannot be e.g. destroyed and recreated later even |
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* if the latter one is using the same VAS |
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* |
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* @param aPlayEventHandler Entity that handles the playback callbacks |
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* @see NssVasMPlayEventHandler.h |
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* |
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* @leave KErrBadHandle if the current command has not been retrieved |
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* from CVCommandHandler (i.e. was not trained for recognition) |
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* @leave KErrNotFound if this command cannot be found in aHandler |
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* @leave KErrNotReady @see nssvasmspeechitem.h MNssSpeechItem::TNssSpeechItemResult |
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* EVasUnexpectedRequest |
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* @leave KErrInUse @see nssvasmspeechitem.h MNssSpeechItem::TNssSpeechItemResult |
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* EVasInUse |
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* @leave KErrArgument @see nssvasmspeechitem.h MNssSpeechItem::TNssSpeechItemResult |
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* EVasInvalidParameter |
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* @leave KErrGeneral @see nssvasmspeechitem.h MNssSpeechItem::TNssSpeechItemResult |
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* EVasPlayFailed |
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*/ |
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void PlaySpokenTextL( const CVCommandHandler& aHandler, |
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MNssPlayEventHandler& aPlayEventHandler ) const; |
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|
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/** |
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* Plays back the user-specified alternative spoken text. |
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* Otherwise is identical to PlaySpokenTextL |
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* @see PlaySpokenTextL |
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* @leave KErrNotFound if this command cannot be found in aHandler of if |
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* it doesn't have a user-specified text |
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*/ |
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void PlayAlternativeSpokenTextL( const CVCommandHandler& aHandler, |
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MNssPlayEventHandler& aPlayEventHandler ) const; |
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|
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/** |
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* Cancels playback of a spoken or alternative spoken text |
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* To be playable command has to be added to CVCommandHandler AND |
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* then retrieved back. After this function neither HandlePlayStarted, |
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* nor HandlePlayComplete will be called |
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* |
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* @param aHandler CVCommandHandler where the command is stored |
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* |
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* @leave KErrBadHandle if the current command has not been retrieved |
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* from CVCommandHandler (i.e. was not trained for recognition) |
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* @leave KErrNotReady if playback has never been started |
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* |
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*/ |
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void CancelPlaybackL( const CVCommandHandler& aHandler ) const; |
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143 |
|
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protected: |
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145 |
/** |
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* @see CVCommand::ConstructL |
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*/ |
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void ConstructL( const TDesC& aText, const CVCRunnable& aRunnable, |
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const CVCCommandUi& aUi, TInt aCommandId ); |
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/** |
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* @see CVCommand::ConstructL |
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*/ |
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void ConstructL( RReadStream& aStream, TInt aCommandId ); |
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154 |
|
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155 |
/** |
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* Clone itself |
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* Is used for copying via NewL( CVCommand& aOriginal ) |
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*/ |
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CVCommand* CloneL() const; |
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|
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private: |
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TInt iCommandId; |
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}; |
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|
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165 |
|
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166 |
/** |
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* Interface for storing, listing and removing voice commands to/from VAS |
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*/ |
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class MVCService |
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{ |
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171 |
public: |
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/** |
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* Synchronous. Service doesn't take the ownership, but makes an own copy |
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* Duplicates can be added |
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* @todo should we check for duplicates and leave with KErrAlreadyExists? |
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*/ |
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virtual void AddCommandL( const CVCommand& aCommand ) = 0; |
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|
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/** |
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* Synchronous. Service doesn't take the ownership, but makes an own copy |
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* Duplicates can be added |
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* @todo Should we check for duplicates and leave with KErrAlreadyExists? |
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* @param aIgnoreErrors If ETrue, even if some commands fail to be trained, |
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* handler adds all that are trainable |
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*/ |
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virtual void AddCommandsL( const RVCommandArray& aCommands, |
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TBool aIgnoreErrors = EFalse ) = 0; |
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|
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/** |
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* Synchronous. Removes the command from the system |
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* @param aCommand Reference to the command to be removed. Existing commands are |
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* compared against aCommand. All the matches are removed from VAS |
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* @leave KErrNotFound No such command |
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*/ |
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virtual void RemoveCommandL( const CVCommand& aCommand ) = 0; |
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|
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/** |
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* Synchronous. |
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* @param aCommands Reference to the list of commands to be removed. Existing commands are |
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* compared against aCommands items. All the matches are removed from VAS |
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* @param aIgnoreErrors If ETrue, even if some commands fail to be removed, |
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* handler will remove as many as possible |
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*/ |
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virtual void RemoveCommandsL( const RVCommandArray& aCommands, |
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TBool aIgnoreErrors = EFalse ) = 0; |
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|
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|
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/** |
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* Synchronous |
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* @return an array of the commands in the system |
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* Ownership of the array is transfered to the client |
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* The returned CVCommandArray contains copies of all the |
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* commands currently stored in this handler |
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*/ |
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virtual CVCommandArray* ListCommandsL() = 0; |
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/** |
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* This method is not intended to be called directly. |
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* Use CVCommand::PlaySpokenTextL instead |
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* @see CVCommand::PlaySpokenTextL |
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* @see CStoredVCommand::PlaySpokenTextL |
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*/ |
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virtual void PlaySpokenTextL( const CStoredVCommand& aCommand, |
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MNssPlayEventHandler& aPlayEventHandler ) = 0; |
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|
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/** |
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* This method is not intended to be called directly. |
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* Use CVCommand::PlayAlternativeSpokenTextL instead |
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* @see CVCommand::PlayAlternativeSpokenTextL |
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* @see CStoredVCommand::PlayAlternativeSpokenTextL |
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*/ |
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virtual void PlayAlternativeSpokenTextL( const CStoredVCommand& aCommand, |
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MNssPlayEventHandler& aPlayEventHandler ) = 0; |
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/** |
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* This method is not intended to be called directly. |
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* Use CVCommand::CancelPlaybackL instead |
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* @see CVCommand::CancelPlaybackL |
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* @see CStoredVCommand::CancelPlaybackL |
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*/ |
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virtual void CancelPlaybackL( const CStoredVCommand& aCommand ) = 0; |
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virtual ~MVCService() {}; |
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}; |
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#endif // VCOMMANDINTERNALAPI_H |