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/*
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* Copyright (c) 2005-2007 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: Used for handling XUIKON events
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*
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*/
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#ifndef C_EVENTHANDLER_H
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#define C_EVENTHANDLER_H
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#include <e32base.h>
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#include "xnvolumecontrolobserver.h"
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#include "xnvolumecontrol.h"
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class CXnNodeAppIf;
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class CXnProperty;
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class MAiFwEventHandler;
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class MAiStrParser;
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class TXnUiEngineAppIf;
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class CXnDomNode;
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namespace AiXmlUiController
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{
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class CXmlUiController;
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class CContentRenderer;
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class MAiUiEventHandler;
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class MAiApplicationEventHandler;
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class CAIEventHandler;
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/**
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* @ingroup group_xmluicontroller
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*
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* This class is used for handling XUIKON events.
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*
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* Events described in Content Model are handled in here. This class parses
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* the events and decides what to do with them. Events are either consumed in
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* UI or in case of a plug-in event forwarded to XML AI Framework for further
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* processing.
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*
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* @lib AiXmlUiMain
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*/
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class CAIXuikonEventHandler : public CBase,
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public MXnVolumeControlObserver
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{
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public:
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static CAIXuikonEventHandler* NewL(CXmlUiController& aXmlUiController,
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CContentRenderer& aRenderer);
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~CAIXuikonEventHandler();
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/**
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* Handle interaction notification from XUIKON UI engine.
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*
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* @see CXnAppUiAdapter::HandleXuikonEventL
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*/
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void HandleXuikonEventL( CXnNodeAppIf& aOrigin,
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CXnNodeAppIf& aTrigger,
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CXnDomNode& aTriggerDefinition,
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CXnDomNode& aEvent );
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/**
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* Set handler for plug-in events
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* @param aPluginEventHandler Pointer to event handler
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*/
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void SetFwEventHandler( MAiFwEventHandler* aPluginEventHandler );
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/**
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* Set handler for UI events
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* @param aUiEventHandler Pointer to event handler
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*/
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void SetUiEventHandler( MAiUiEventHandler* aUiEventHandler );
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/**
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* Set handler for application events
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* @param aApplicationEventHandler Pointer to event handler
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*/
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void SetApplicationEventHandler( MAiApplicationEventHandler*
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aApplicationEventHandler );
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// from MXnVolumeControlObserver
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/**
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* Called when volume value is changed.
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*/
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void VolumeChanged( TInt aValue );
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private:
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CAIXuikonEventHandler(CXmlUiController& aUiController,
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CContentRenderer& aRenderer);
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void ConstructL();
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TBool HandleSystemEventL( const TDesC8& aEventText, CXnDomNode& aEvent );
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TBool HandleUiEventL( const TDesC8& aEventText, CXnNodeAppIf& aOrigin );
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TBool HandleApplicationEventL( const TDesC8& aEventText );
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void DispatchEventL( CXnDomNode& aEvent,
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CXnNodeAppIf& aOrigin,
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CXnDomNode& aTriggerDefinition );
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void HandlePluginEventL( CXnDomNode& aEvent );
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void ParseParameterStringL(const TDesC8& aSourcePtr, TPtrC8& aTargetPtr);
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private: // data
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class CNullEventHandler;
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/**
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* String parser utility. Own.
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*/
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MAiStrParser* iStrParser;
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/**
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* Reference to XML ui controller.
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*/
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CXmlUiController& iUiController;
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/**
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* Reference to content renderer.
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*/
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CContentRenderer& iContentRenderer;
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/**
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* Null event handler.
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*/
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CNullEventHandler* iNullEventHandler;
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/**
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* Plug-in event handler.
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* Doesn't own.
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*/
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MAiFwEventHandler* iFwEventHandler;
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/**
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* UI event handler.
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* Doesn't own.
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*/
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MAiUiEventHandler* iUiEventHandler;
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/**
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* Application event handler.
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* Doesn't own.
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*/
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MAiApplicationEventHandler* iApplicationEventHandler;
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/**
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* Volume control event.
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* Owned.
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*/
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HBufC* iVolumeEvent;
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/**
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* Volume control interface.
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* Not owned.
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*/
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XnVolumeControlInterface::MXnVolumeControlInterface* iVolumeControl;
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/**
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* AiEvent handler
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* Owned
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*/
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CAIEventHandler* iAiEventHandler;
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};
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} // namespace AiXmlUiController
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#endif // C_EVENTHANDLER_H
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