/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  tabbed view control implementation class with doublestyle listbox 

*

*/

#ifndef     __CVIMPSTUIDOUBLELISTBOXTABVIEWCONTROL_H

#define     __CVIMPSTUIDOUBLELISTBOXTABVIEWCONTROL_H

#include "mvimpstuitabbedviewcontrol.h"

#include "mvimpstprocessArrayobserver.h"

#include "cvimpstuidoublestylelistbox.h"

class CVIMPSTUiDoubleStyleListBox;

// CLASS DECLARATION

/**

 * Tabbed view control. Shows list of contacts.

 *  @lib vimpstui.lib

 *  @since S60 v5.0 

 */

class CVIMPSTUiDoubleListBoxTabViewControl :public CCoeControl,

								            public MVIMPSTProcessArrayObserver,

								            public MEikListBoxObserver,

        									public MCoeControlObserver,

        									public MVIMPSTUiTabbedViewControl

    {

    public: // Constructor and destructor

        /**

         * Creates a new CImContactsTabbedViewControl.

         *

         * @param aTabbedView reference to view.

         * @param aKeyEventHandler Key event handler to be used

         * @param aCommandHandler reference to commandhandler

         * @param aServiceId Id of the service

         * @param aBrandHandler reference to brandhandler

         * @param aEngine reference to engine

         */

        static CVIMPSTUiDoubleListBoxTabViewControl* NewL( CVIMPSTUiTabbedView& aTabbedView, MPbk2KeyEventHandler* aKeyEventHandler, 

        										MVIMPSTCmdHandler& aCommandHandler,

        										TUint32 aServiceId,

        										CVIMPSTUiBrandData& aBrandHandler,

        										MVIMPSTEngine& aEngine );

        /**

         * Creates a new CImContactsTabbedViewControl and leaves it to

         * cleanup stack.

         * @see NewL

         *

         * @param aTabbedView reference to view.

         * @param aKeyEventHandler Key event handler to be used

         * @param aCommandHandler reference to commandhandler

         * @param aServiceId Id of the service

         * @param aBrandHandler reference to brandhandler

         * @param aEngine reference to engine

         */

        static CVIMPSTUiDoubleListBoxTabViewControl* NewLC( CVIMPSTUiTabbedView& aTabbedView,MPbk2KeyEventHandler* aKeyEventHandler,

        											MVIMPSTCmdHandler& aCommandHandler,

        											TUint32 aServiceId,

        											CVIMPSTUiBrandData& aBrandHandler,

        											MVIMPSTEngine& aEngine  );

        /**

         * Destructor.

         */

        ~CVIMPSTUiDoubleListBoxTabViewControl();

    public : // from MIMArrayProcessObserver

        /**

         * @see MIMArrayProcessObserver.

         */

        void HandleAdditionL(TVIMPSTEnums::TItem type, TInt aIndex);

       	 /**

          * @see MIMArrayProcessObserver.

          */

     	void HandleDeletionL(TVIMPSTEnums::TItem type, TInt aIndex);

     	/**

     	 * @see MIMArrayProcessObserver.

     	 */

     	void  HandleAvatarChangeL( const TDesC& aUserId );

    public://from MEikListBoxObserver

		/**

         * From MEikListBoxObserver, Handles event's generated by listbox

		 * @see MEikListBoxObserver

         */

		void HandleListBoxEventL( CEikListBox* aListBox,

			TListBoxEvent aEventType );

    public: //from MCoeControlObserver

    	/**

	     * Handles events from findpane and forwards them to listbox filter.

	     * @see MCoeControlObserver

	     */

	    void HandleControlEventL( CCoeControl* aControl,TCoeEvent aEventType );

        /**

         * Get access to listbox model's filter

         * @return model's filter

         */                     

        CAknListBoxFilterItems* ListFilter();

    public: // New functions

        /**

         * Returns the currently focused item's index.

         * @return TInt, current item index.

         */

        TInt CurrentItemIndex() const;

        /**

         * Sets the currently focused item's index.

         *

         * @param aIndex new currently focused index

         */

        void SetCurrentItemIndex( TInt aIndex );

		/**

         * Sets the currently focused item's index and updates the control

         * on the display.

         *

         * @param aIndex new currently focused index

         */

        void SetCurrentItemIndexAndDraw( TInt aIndex );

        /**

         * Handles item addition for this control.

         */

        void HandleItemAdditionL();

        /**

         * Handles item removal for this control.

         */

        void HandleItemRemovalL();

        /**

         * Sets list box empty text.

         *

         * @param aResourceId resource id of a empty text

         */

        void SetListEmptyTextL( TInt aResourceId );

        /**

         * send the message using selected item

         * this will launch the conversation view if im is enabled.

         */

        void SendMessageL();

        /**

         * Updates view after edit.

         * @param aIndex is the index of item that has changed.

         * @param aType is list item type. 

         */

        void UpdateViewL( TInt aIndex, TVIMPSTEnums::TItem aType);

     	/**

     	 * @see MVIMPSTUiTabbedViewControl.

     	 */

        /**

	     * LoadsBitmap array.

	     */	

        void LoadBitmapsL();

        /**

         * Gets the owned listbox control

         *

         * @return the owned list box

         */

        CVIMPSTUiDoubleStyleListBox& ListBox() const;

        /**

        * Activates find-pane

		*/

		void ActivateFindPaneL();

        /**

        * De-activates find-pane

		*/

		void DeactivateFindPaneL();

	   /**

		*Handle the avatar deletion in UI

		*/

		void SetFocussedId(const TDesC& aContact)  ;

		/**

		* the avatar deletion in UI

		*/

		TPtrC GetFocussedId() ;

    private: // From CCoeControl, standard control functionality

        /**

         * @see CCoeControl

         */

        TKeyResponse OfferKeyEventL

            ( const TKeyEvent& aKeyEvent, TEventCode aType );

        /**

         * @see CCoeControl

         */

        void SizeChanged();

        /**

         * @see CCoeControl

         */

        TInt CountComponentControls() const;

        /**

         * @see CCoeControl

         */

        CCoeControl* ComponentControl( TInt aIndex ) const;

        /**

         * @see CCoeControl

         */

        void FocusChanged( TDrawNow aDrawNow );

    private: // Implementation

        /**

         * Standard C++ constructor

         *

         * @param aTabbedView reference to view.

         * @param aKeyEventHandler Key event handler to be used

         * @param aCommandHandler reference to commandhandler

         * @param aServiceId Id of the service

         * @param aBrandHandler reference to brandhandler

         * @param aEngine reference to engine

         */    

        CVIMPSTUiDoubleListBoxTabViewControl(   CVIMPSTUiTabbedView& aTabbedView,MPbk2KeyEventHandler* aKeyEventHandler,

                    							MVIMPSTCmdHandler& aCommandHandler,

                    							TUint32 aServiceId,

                    							CVIMPSTUiBrandData& aBrandHandler,

                    							MVIMPSTEngine& aEngine );

        /**

         * Performs the 2nd phase of construction.

         * 

         */        

        void ConstructL();

		/**

         * Layouts current components according to AVKON LAF

		 */

		void SetLayout();

		/**

		 *  NOTE : PASSING NULL DESCRIPTOR IS NOT ALLOWED  

		 *  NO CHECK FOR THE NULL DESCPRIPTOR

		 * 

		 *  Utility function to create Icons from

		 *  image data using Image processor

		 * 

		 * @param aAvatarContent : avatar content 

		 * 

		 * @return  CGulIcon icon created , returns NULL in case of errors

		 */

		CGulIcon*  AvatarToIconL( const TDesC8& aAvatarContent );

		void SetFocusAndMakeItemVisible();

    public:

        /**

        * Sets the iClrFindPaneFlag

        */

        void SetClrFindPaneFlag(TBool aFlag);

        /**

        * Checks if the last contact is focused and Sets the iLastItemFlag

        */            

        void CheckAndSetLastItemFlag(); 

        /**

         * returns the CCoeControl* pointer

         */

        CCoeControl* CoeControl();

        /**

         * Sets the lock status of softkeys

         * @param aLock new status of lock (ETrue: locked, EFalse: Unlocked)

         */                     

        void SetCbaLockL( TBool aLock );

        /**

         * Updates Softkeys according to current focus

         * @param aUseDefaultCba Flag to force the default sofkeys for view.

         * Default value is false.

         */                     

        void UpdateCbaL( TBool aUseDefaultCba = EFalse );

    private: // Data

    	// not owned

    	 CVIMPSTUiTabbedView& iTabbedView;

    	// Not owned: key event handler

    	MPbk2KeyEventHandler* iKeyEventHandler;

    	//Holds the Ref to CMd Handler - Doesnt Own

    	MVIMPSTCmdHandler& iCommandHandler;

    	//Doesnt Own

        MVIMPSTProcessArray& iArrayProcess;         

        //Service Id 

		TUint32 iServiceId ;

		//doesnt own - Brand Handler

		CVIMPSTUiBrandData& iBrandHandler;

		//doesnt own - Engine Handler

		MVIMPSTEngine& iEngine;

        // Owns. Listbox to view friends-list data

        CVIMPSTUiDoubleStyleListBox* iListBox;

        // Owns. Search field.

		CAknSearchField* iFindbox;

		// is find pane visible.

        TBool iFindPaneIsVisible;

        //current state

        TBool iCurrentState;

          // Owns: Flag to check whether the last contact was selected

        TBool iLastItemFlag;

        CFbsBitmap* iBitmap;  

        TInt iAvatarError;

        // CBA. not owned

        CEikButtonGroupContainer* iCba;     

        // Lock status foc softkeys

        TBool iCbaLock;

        // Storage for previous focus

        TVIMPSTEnums::TItem iLastFocusedItemType;

        //flag to check to clear find pane

        TBool iClrFindPaneFlag;

		//indicate command to be executed on enter key Event.

		TInt iCurrentCmdToExe;

    };

#endif // __CVIMPSTUIDOUBLELISTBOXTABVIEWCONTROL_H

// End of file