/*

* Copyright (c) 2007 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:  Container class for compose view

*

*/

#ifndef CNCSSUBJECTFIELD_H

#define CNCSSUBJECTFIELD_H

#include <aknview.h>

#include <AknDef.h>

#include "ncseditor.h"

#include "ncscontrol.h"

#include"ncsconstants.h"

class CEikImage;

class MNcsFieldSizeObserver;

class CNcsHeaderContainer;

// CLASS DECLARATION

/**

*  CNcsSubjectField container control class.

*

*  @lib -

*  @since S60 v3.0

*/

class CNcsSubjectField : public CCoeControl, public MEikEdwinSizeObserver, public MNcsControl

    {

public: // Constructors and destructor

        /**

        * NewL.

        * Two-phased constructor.

        * Create a CNcsSubjectField object, which will draw itself to aRect

        * @since S60 v3.0

        * @param aParent parent window.

        * @param aText caption text

        * @return a pointer to the created instance of CNcsSubjectField.

        */

    static CNcsSubjectField* NewL( TInt aLabelTextId,

                                   MNcsFieldSizeObserver* aSizeObserver,

                                   CNcsHeaderContainer* aParentControl );

    virtual ~CNcsSubjectField();

public: // new functions

    TInt MinimumHeight();

    void SetSubjectL( const TDesC& aSubject );

    CNcsEditor* Editor() const;

    TInt LineCount() const;

    TInt CursorLineNumber() const;

    TInt CursorPosition() const;

    TInt ScrollableLines() const;

    TInt GetNumChars() const;

    const TDesC& GetLabelText() const;

    // <cmail> Platform layout change       

    TInt LayoutLineCount() const;

    // </cmail> Platform layout change    

    void GetLineRectL( TRect& aLineRect ) const;

    void SetMaxLabelLength( TInt aMaxLength );

    TInt GetMinLabelLength() const;

    void SelectAllTextL();

    void SetTextColorL( TLogicalRgb aColor );

public: // from CoeControl

        /**

        * SetContainerWinowL

        * Set the cotainer window this control should raw in

        * @since S60 v3.0

        * @param aContainer The window continer that owns this control

        */

    void SetContainerWindowL(const CCoeControl& aContainer);

    /**

    * Draw

    * Draw this CNcsSubjectField to the screen.

    * @since S60 v3.0

    * @param aRect the rectangle of this view that needs updating

    */

    void Draw( const TRect& aRect ) const;

    /**

    * From CCoeControl

    */

    void SizeChanged();

    void PositionChanged();

    TKeyResponse OfferKeyEventL( const TKeyEvent& aKeyEvent, TEventCode aType );

    void FocusChanged(TDrawNow aDrawNow);                  

    void HandleResourceChange( TInt aType );

    /**

    * From MEikEdwinSizeObserver

    */

    TBool HandleEdwinSizeEventL( CEikEdwin* aEdwin, TEdwinSizeEvent aEventType, TSize aDesirableEdwinSize );

    inline void Reposition( TPoint& aPt, TInt aWidth );

private:

    CNcsSubjectField( MNcsFieldSizeObserver* aSizeObserver, CNcsHeaderContainer* aParentControl );

    void ConstructL( TInt aLabelTextId );

    void UpdateColors();

    void UpdateFontSize();

    void HandleFocusChangedL();

    static TInt DoHandleFocusChanged( TAny* aSelfPtr ); 

    //<cmail>

    void HandlePointerEventL( const TPointerEvent& aPointerEvent );

    //</cmail>

private: // data

    CNcsHeaderContainer* iParentControl; // not owned

    /*

    * text field

    * Own

    */

    CNcsLabel* iLabel;

// <cmail> Platform layout changes

    const CFont* iFont; // not owned, needs to be released in the end

// </cmail> Platform layout changes

    /*

    * text field

    * Own

    */

    CNcsEditor* iTextEditor;

    TInt iEditorMinimumHeight;

    TInt iMaximumLabelLength;         

    TRgb iBorderColor;

    TRgb iBgColor;

    CAsyncCallBack* iFocusChangeHandler;

    TBool iDrawAfterFocusChange;

// <cmail> Platform layout changes

    TInt iEditorLineCount;

// </cmail> Platform layout changes

    };

#endif // CNCSSUBJECTFIELD_H