mpxplugins/viewplugins/views/commoncontainer/inc/mpxcommoncontainersearchfield.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:45:05 +0200
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/*
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* Copyright (c) 2008 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:  Class that implements Search Field feature.
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*
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*/
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#ifndef CMPXCOMMONCONTAINERSEARCHFIELD_H
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#define CMPXCOMMONCONTAINERSEARCHFIELD_H
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// INCLUDE FILES
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#include <coecntrl.h>
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#include <eikedwin.h>
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#include <Avkon.mbg>
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// FORWARD DECLARATION
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class CAknInputFrame;
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class CMPXCommonContainerSearchField;
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class CMPXCommonContainerSearchFieldWrapper;
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// CLASS DECLARATION
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/**
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 * Class for handling key events. Has higher priority than FEP,
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 * to be able to catch up/down key event and forward them to Search
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 * Field's editor.
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 */
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NONSHARABLE_CLASS( CMPXCommonContainerSearchFieldKeyHandler ) :
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                           public CCoeControl,
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                           public MEikEdwinObserver
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    {
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    public:
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        /**
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         * public constructor.
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         *
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         * @param aSearchField Reference to Search Field that key events are controlled.
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         */
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        CMPXCommonContainerSearchFieldKeyHandler( CMPXCommonContainerSearchField& aSearchField );
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        /**
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         * Catches key events before FEP could do it.
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         *
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         * @param aKeyEvent Key event.
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         * @param aType Key event type.
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         * @return Response whether key was handled or not.
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         */
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        TKeyResponse OfferKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType );
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        /**
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         * Catches EEventTextUpdate event.
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         *
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         * @param aEdwin Pointer to editor.
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         * @param aEventType Editor event type.
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         */
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        void HandleEdwinEventL( CEikEdwin* aEdwin, TEdwinEvent aEventType );
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        /**
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         * Put control to control stack or remove it from there.
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         *
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         * @param aEnable ETrue puts control to the control stack with higher
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         *        priority than FEP has. EFalse removes control from the stack.
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         */
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        void EnableL( TBool aEnable );
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        /**
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         * Resets key handling situation by setting iFirstKeyEvent to ETrue.
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         */
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        void Reset();
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    /**
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     * Get LeftRightEvent.
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     */
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    TBool IsLeftRightEvent();
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    /**
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     * SetFirstKey.
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     */
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    void SetFirstKeyEvent( TBool aFirstKeyEvent );
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    protected:
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        /**
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         * Key event catching enable flag.
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         */
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        TBool iEnabled;
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        /**
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         * Only first key event is catched.
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         */
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        TBool iFirstKeyEvent;
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        /**
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         * Flag for LeftRightEvent.
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         */
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        TBool iLeftRightEvent;
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        /**
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         * Search Field control of which key events are catched.
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         */
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        CMPXCommonContainerSearchField& iSearchField;
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    };
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/**
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 * Search Field class for component.
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 *
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 */
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NONSHARABLE_CLASS( CMPXCommonContainerSearchField ) : public CCoeControl,
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                                         public MCoeControlObserver,
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                                         public MCoeFepObserver
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    {
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    public:
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        /**
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         * Two-phased constructor. Leaves on failure.
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         *
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         * @param aParent Parent control.
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         * @param aFindKeywordMode ETrue if the pane is a find keyword pane.
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         * @return The constructed Search Field control.
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         */
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        static CMPXCommonContainerSearchField* NewL( CMPXCommonContainerSearchFieldWrapper* aParent,
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                                        TBool aFindKeywordMode = ETrue );
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        /**
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         * Destructor.
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         */
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        virtual ~CMPXCommonContainerSearchField();
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        /**
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         * Shows or hides to Search Field.
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         *
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         * @param ETrue to set visible
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         */
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        void MakeVisibleL( TBool aVisible );
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        /**
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         * Non-leaving version of MakeVisibleL.
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         *
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         * @param ETrue to set visible
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         */
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		void MakeVisible( TBool aVisible );
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        /**
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         * Called to handle change in Search Field size.
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         */
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        void HandleFindSizeChanged();
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        /**
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         * Enable key event handler.
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         *
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         * @param aEnable ETrue to enable.
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         */
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        void EnableKeyEventHandlerL( TBool aEnable );
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    public:	// From MCoeControlObserver
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        /**
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         * Handle control event.
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         *
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         * @param aControl The control.
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         * @param aEventType Event type.
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         */
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	    void HandleControlEventL( CCoeControl* aControl, TCoeEvent aEventType );
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    public: // From CCoeControl
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        /**
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         * Handles key event.
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         *
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         * @param aKeyEvent The key event.
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         * @param aType Key event type.
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         * @return Response whether event was consumed.
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         */
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        TKeyResponse OfferKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType );
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        /**
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         * HandlePointerEventL, from CCoeControl.
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         *
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         * @param aPointerEvent Pointer event.
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         */
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        void HandlePointerEventL( const TPointerEvent& aPointerEvent );
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        /**
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         * Count component controls.
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         *
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         * @return Number of component controls
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         */
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        TInt CountComponentControls() const;
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        /**
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         * Get a component control by index.
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         *
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         * @param aIndex Index of component control to be returned
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         * @return Component control or NULL
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         */
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        CCoeControl* ComponentControl( TInt aIndex ) const;
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        /**
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         * Sets the OrdinalPosition of Search Field.
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         *
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         * @param aPos The OrdinalPosition
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         */
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        void SetOrdinalPosition( TInt aPos );
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    public: // Text manipulation.
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        /**
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         * Lengt of the text in the editor.
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         *
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         * @return The text length
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         */
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        TInt TextLength() const;
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        /**
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         * Get text from the editor.
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         *
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         * @return text from the editor
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         */
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        HBufC* GetTextLC() const;
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        /**
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         * Set text.
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         *
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         * @param aTxt Text to set, appended if needed.
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         */
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        void SetTextL( const TDesC& aTxt );
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        /**
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         * Selects all text in the editor, see CEikEdwin's SelectAllL().
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         */
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        void SelectAllL();
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        /**
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         * Set info text.
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         *
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         * @param aText Text to be displayed as info
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         */
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        void SetInfoTextL( const TDesC& aText );
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        /**
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         * Perform clipboard functionality.
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         *
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         * @param aClipboardFunc Function to perform.
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         */
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        void ClipboardL( CEikEdwin::TClipboardFunc aClipboardFunc );
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        /**
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         * Returns editor control of Search Field.
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         *
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         * @return Editor control.
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         */
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        CEikEdwin* Editor() const;
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        /**
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         * Checks if client's keyword needs updating, and updates if needed.
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         */
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        void UpdateFindKeywordL();
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    public: // Observer support.
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        /**
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         * Handles resource change.
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         *
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         * @param aType Type of resource change.
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         */
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		void HandleResourceChange( TInt aType );
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        /**
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         * Handles the completion of a FEP transaction.
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         */
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		void HandleCompletionOfTransactionL();
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        /**
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         * Handles the start of a FEP transaction.
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         */
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		void HandleStartOfTransactionL();
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    protected: // Construction.
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        /**
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         * Constructor.
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         *
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         * @param aFindKeywordMode ETrue if the pane is a find keyword pane.
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         */
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        CMPXCommonContainerSearchField( TBool aFindKeywordMode );
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        /**
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         * Second-phase constructor. Leaves on failure.
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         *
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         * @param aParent Parent control.
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         */
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        void ConstructL( CMPXCommonContainerSearchFieldWrapper* aParent );
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    protected: // From CCoeControl.
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        /**
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         * Handle size change, layout and draw components.
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         */
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        void SizeChanged();
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        /**
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         * Handle focus change.
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         *
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         * @param aDrawNow ETrue if immediate draw is needed.
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         */
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        void FocusChanged( TDrawNow aDrawNow );
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   318
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    private:
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   320
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        /**
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        * Set the text and redraw.
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        *
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        * @param aTxt Text to set.
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        */
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        void DoSetTextL( const TDesC& aTxt );
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        /**
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         * Activates virtual keyboard.
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         */
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        void ActivateVkbL();
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   332
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    protected: // Data.
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   334
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        /**
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         * Pointer to parent (control).
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         * Not own.
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         */
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        CMPXCommonContainerSearchFieldWrapper* iParent;
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   340
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        /**
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         * If the control is in find keyword pane mode.
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         */
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		TBool iFindKeywordMode;
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		/**
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		 * HandleFEPFind.
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		 */
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		TBool iHandleFEPFind;
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   350
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		/**
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		 * The previously typed text into iEditor.
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		 */
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		HBufC* iPrevKeyword;
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   355
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		/**
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		 * Editor.
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		 * Own.
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		 */
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        CEikEdwin* iEditor;
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        /**
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         * Input frame.
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         * Own.
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         */
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        CAknInputFrame* iInputFrame;
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        /**
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         * Key handler.
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         * Own.
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         */
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        CMPXCommonContainerSearchFieldKeyHandler *iSearchFieldKeyHandler;
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    };
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#endif // CMPXCOMMONCONTAINERSEARCHFIELD_H