basiclocationinfodisplay/blid/ui/inc/MKeyProcessor.h
author Simon Howkins <simonh@symbian.org>
Mon, 15 Nov 2010 15:22:23 +0000
branchRCL_3
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/*
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* Copyright (c) 2005 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: 
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*     Interface which allows subscribers to consume key event or pass the event
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*     to other view class.
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*       
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*
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*/
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#ifndef MKEYPROCESSOR_H
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#define MKEYPROCESSOR_H
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// INCLUDES
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#include <w32std.h>
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// FORWARD DECLARATIONS
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class MAknTabObserver;
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// ===========================================================================
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// MKeyProcessor
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// ===========================================================================
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/**
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*	An interface a CCoeControl class can implement to forward the keyevents 
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*   before the actual control gets the key events. This is useful in 
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*   situations where the control consumes keys which you need.
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*/
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class MKeyProcessor
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    {
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    public:
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    /**
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     * process the keyevent befor it reaches the control
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     * @param aKeyEvent the event fired
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     * @param aType the type of event
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     * @return ETrue if key event was consumed, otherwise EFalse
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     */
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    virtual TBool ProcessKeyEventL( const TKeyEvent& aKeyEvent,
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                                    TEventCode aType ) = 0;
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	/**
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     * returns the pointer to MAknTabObserver interface
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     * @return pointer to the MAknTabObserver interface
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     */
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    virtual MAknTabObserver* TabObserver() = 0;
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    };
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#endif //MKEYPROCESSOR_H
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// End of File