/*

* Copyright (c) 2002 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:  Declaration of customized editor control.

*

*/

#ifndef NPDEDWINBASE_H

#define NPDEDWINBASE_H

#include "NpdEdwinExposer.h"

// INCLUDES

#include <eikedwin.h> //CEikEdwin

// FORWARD DECLARATIONS

#include <eikedwob.h>

class CNotepadEdwinLines;

class CAknsFrameBackgroundControlContext;

class CAknsBasicBackgroundControlContext;

class CEikDialog;

// CLASS DECLARATION

/**

* Customized editable window control.

* CNotepadEdwin is an editable window control class customized to implement

* the LAF of Notepad.

*  

* @lib NpdLib.lib

* @see CNotepadEditorDialog

*/

NONSHARABLE_CLASS(CNotepadEdwinBase) : public CBase,

    public MEikEdwinObserver

    {

    public: // New function

        /**

        * Constructor

        *

        */

         CNotepadEdwinBase();

        /**

 	* Destructor.

        *

        */

	~CNotepadEdwinBase();

        /**

        * Gets Edwin control from Derived class

        *

        */

        void Share(CEikEdwin* aEdwin, MNotepadEdwinExposer* aEdwinExposer);

        /**

        * Sets the layout of the edwin and the scrollbar.

        *

        */

        void DoEditorLayoutL();

        /**

        * Initialize the editor.

        * This function should be called from dialog's PostLayoutDynInitL.

        *

        */

        void InitNotepadEditorL( 

            CEikDialog* aParent,

            TBool aIsRichTextEditor, CNotepadEdwinLines* aEdwinLines);

        /**

        * Restrict format area of the editor to visible lines only.

        * This function calls iTextLayout->SetAmountToFormat().

        *

        */

        inline void SetAmountToFormat(TInt aDocumentSizeInCharacters);

        /**

 	* Gets an object whose type is encapsulated by 

 	* the specified TTypeUid object.

        *

        */

	TBool SupplyMopObject(TTypeUid aId,TTypeUid::Ptr& aPtr);

    protected:  // Functions from base classes

        /**

        * From MEikEdwinObserver.

        * Override to implement dynamically changing decoration.

        *

        * @param aEdwin edwin to observe

        * @param aEventType type of edwin event.

        */

        void HandleEdwinEventL(CEikEdwin* aEdwin, TEdwinEvent aEventType);

    public:

        /**

        * Set background color specified by LAF.

        */

        void SetBackgroundColorL();

       // Functions from base classes

        /**

        * From CCoeControl.

        * Call when a certain resource has changed.

        * @param aType type of event.

        */

        void HandleResourceChange(TInt aType);

        /**

        * From CCoeControl.

        * Call when a certain resource has changed.

        * We only handle KEikColorResourceChange.

        *

        * @param aType type of event.

        */

        void Draw(const TRect& aRect) const;

    private:

    	/**

    	* Updates the scroll layout

    	*/

    	void UpdateScrollLayout();

    private: // Data

    	TRect iBackgroundRect;

	CEikDialog*iParent;

	CEikEdwin* iEdwin; //not own

       	MNotepadEdwinExposer* iEdwinExposer; //not own

       	CNotepadEdwinLines* iEdwinLines; // not own

	CAknsFrameBackgroundControlContext* iBgContext; // Owned

	CAknsBasicBackgroundControlContext* iSkinContext;

	TBool iIsRichTextEditor;

    TBool iIsFirstTimeDrawEditor;

    TInt iTextLength;

    TInt iPreTextLength;

    TPoint iPointAtCursor;

    TInt iLineNumByYCoordinate;

    TInt iPreLineNumByYCoordinate;

    };

#include "NpdEdwinBase.inl"

#endif // NPDEDWIN_H

// End of File