/*

* Copyright (c) 2007-2008 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:  textview class

*

*/

#ifndef _CIMCVAPPTEXTVIEWCONTROL_H

#define _CIMCVAPPTEXTVIEWCONTROL_H

//  INCLUDES

#include <eiksbobs.h> // MEikScrollBarObserver

#include <eikbctrl.h>

#include <frmtlay.h> // TCursorSelection

#include "mimcvapptextview.h"

// FORWARD DECLARATIONS

class CTextLayout;

class CTextView;

class CEikScrollBarFrame;

class CAknsBasicBackgroundControlContext;

class CIMCVAppCustomDraw;

// CLASS DECLARATION

/**

*  Text viewer component

*  @since 5.0

*/

class CIMCVAppTextViewControl : public CCoeControl,

						   public MIMCVAppTextView,

                           public MEikScrollBarObserver

    {

    public:  // Constructors and destructor

        /**

         * Two-phased constructor.

         * @param aRect Draw area

         * @param aParent Parent control

         * @param aTextLayout Text to be viewed

         * @return Instance of this class

         */

        static CIMCVAppTextViewControl* NewL( const TRect& aRect, 

                                         const CCoeControl& aParent,

                                         MLayDoc* aTextLayout );

        /**

         * Destructor.

         */

        virtual ~CIMCVAppTextViewControl();

		void UpdateChatViewL ();

		/**

		 * Update the view

		 */

		void SmileyDialogLaunched (TBool aLaunched);

		void UpdateViewL();

    protected:  // New functions

        /**

         * Updates scrollbars

         */

        void UpdateScrollBarsL( TBool aScrollDraw = ETrue );

        /**

         * Set highlight state

         */

        void SetHighlighted( TBool aIsHighlighted );

        /**

         * Get scrollbars

         */

        const CEikScrollBarFrame* ScrollBarFrame();

        /**

         * Finds the document position which is located at aPoint

         * @param aPoint Location to find

         * @return Document position or 

         *         KErrNotFound if not found

         */

        TInt FindDocPos( TPoint aPoint );

    protected:  // Functions from MIMCVAppTextView

        /**

         * @see MIMCVAppTextView

         */

        void HandleFormatChangedL( TCursorSelection& aChanged,

                                   TBool aPreserverFocus = EFalse );

        /**

         * @see MIMCVAppTextView

         */

        void HandleInsertDeleteL( TCursorSelection& aChanged, 

                                  TInt aDeletedChars );

        /**

         * @see MIMCVAppTextView

         */

        void HandleAdditionL( TBool aFirst, 

                              TCursorSelection& aSelection, 

                              TBool aTop  );

        /**

         * @see MIMCVAppTextView

         */

        void ScrollVisibleL( TCursorSelection& aSelection, TBool aTop );

        /**

         * @see MIMCVAppTextView

         */

        TCursorSelection ScrollSelection();

        /**

         * @see MIMCVAppTextView

         */

        void ScrollLinesL( TInt aAmount );

        /**

         * @see MIMCVAppTextView

        */

   public:

        TBool IsVisible( TInt aPos );

        /**

         * @see MIMCVAppTextView

         */

     protected:

        TBool ParagraphFits( TInt aPos );

        /**

         * @see MIMCVAppTextView

         */

        void Redraw();

        /**

         * @see MIMCVAppTextView

         */

        void SetPenBehaviour( TPenBehaviour aPen );

        /**

         * @see MIMCVAppTextView

         */

        MIMCVAppTextView::TPenBehaviour PenBehaviour();

        /**

         * @see MIMCVAppTextView

         */

        void ProcessStylusEventL( const TPointerEvent& aPointerEvent );

        /**

         * @see MIMCVAppTextView

         */

        void HandleGlobalChangeNoRedrawL(

            TViewYPosQualifier aYPosQualifier = TViewYPosQualifier() );

    public: // from MObjectProvider

	    TTypeUid::Ptr MopSupplyObject(TTypeUid aId);        

    protected: // from MEikScrollBarObserver

    	void HandleScrollEventL( CEikScrollBar* aScrollBar, 

    	                         TEikScrollEvent aEventType );

    protected:  // Functions from CCoeControl

        /**

         * @see CCoeControl

         */

        TKeyResponse OfferKeyEventL( const TKeyEvent& aKeyEvent, 

                                     TEventCode aType );

        /**

         * @see CCoeControl

         */

        void HandlePointerEventL( const TPointerEvent& aPointerEvent );        

        /**

         * @see CCoeControl

         */

        void Draw( const TRect& aRect ) const;

        /**

         * @see CCoeControl

         */

        void SizeChanged();

        /**

         * @see CCoeControl

         */

	    TInt CountComponentControls() const;

        /**

         * @see CCoeControl

         */

        CCoeControl* ComponentControl(TInt aIndex) const;

    protected:

        /**

        * C++ default constructor.

        */

        CIMCVAppTextViewControl();

        /**

        * By default Symbian 2nd phase constructor is private.

        * @param aRect Draw area

        * @param aParent Parent control

        * @param aTextLayout Text to be viewed

        */

        void ConstructL( const TRect& aRect, const CCoeControl& aParent,

                         MLayDoc* aTextLayout );

    private:    // Data

        // Owns. rectangle in which to view text

        TRect iViewRect;

        // Owns. text layout

        CTextLayout* iLayout;

        // Owns. text view           

        CTextView* iTextView;

        // Owns. custom drawer for skins

        CIMCVAppCustomDraw* iCustomDraw;

        // Owns. scroll bar container

        CEikScrollBarFrame* iScrollBar;

        // Is control in stack?

        TBool iAddedToStack;

        //owns

        CAknsBasicBackgroundControlContext* iBgContext; // Skin background control context

        // Own. Clipping region to prevent flickering

        RRegion* iClipping;

        // Highlight state inside text view

        TBool iIsHighlighted;

        // Determines how this contol reacts to pointer events

        TPenBehaviour iPenType;

		TBool iSmileyDialogLaunched;

    };

#endif      // _CIMCVAPPTEXTVIEWCONTROL_H

// End of File