/*

* Copyright (c) 2009 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:  This class is for showing the attendees in viewer mode.

 *

*/

#ifndef CESMRVIEWERATTENDEESFIELD_H

#define CESMRVIEWERATTENDEESFIELD_H

#include <caluser.h>

#include <eikedwob.h>

#include "cesmrfield.h"

#include "cesmrrichtextviewer.h"

class CESMRRichTextLink;

class CMRLabel;

/**

 * This class shows the attendees in viewer mode. It's possible to

 * use contact action menu via a single attendee.

 */

NONSHARABLE_CLASS( CESMRViewerAttendeesField ) : public CESMRField,

public MEikEdwinSizeObserver, public MESMRRichTextObserver

    {

public:

    /**

     * Constructor for the attendee field.

     *

     * @param CCalAttendee::TCalRole - Information that tells is this

     *                                 field for optional or for

     *                                 required attendees.

     * @return New attendees field object.

     */

    static CESMRViewerAttendeesField* NewL( CCalAttendee::TCalRole );

    /**

     * C++ Destructor.

     */

    ~CESMRViewerAttendeesField( );

protected: // From CCoeControl

    TInt CountComponentControls( ) const;

    CCoeControl* ComponentControl( TInt aInd ) const;

    void SizeChanged( );

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

    TSize MinimumSize();

protected: // From CESMRField

    void InitializeL();

    void SetOutlineFocusL( TBool aFocus );

    void InternalizeL( MESMRCalEntry& aEntry );

    void GetMinimumVisibleVerticalArea(TInt& aUpper, TInt& aLower);

    void GetCursorLineVerticalPos(TInt& aUpper, TInt& aLower);

    void ListObserverSet( );

    TBool ExecuteGenericCommandL( TInt aCommand );

protected: // From MEikEdwinSizeObserver

    TBool HandleEdwinSizeEventL(CEikEdwin* aEdwin, TEdwinSizeEvent aType,

            TSize aDesirableEdwinSize );

protected: // From MESMRRichTextObserver

    TBool HandleRichTextLinkSelection(const CESMRRichTextLink* aLink );

private: // Implementation

    CESMRViewerAttendeesField( CCalAttendee::TCalRole aType );

    void ConstructL( );

    HBufC* ClipTextLC( const TDesC& aText, const CFont& aFont, TInt aWidth );

    void UpdateAttendeesListL();

    TInt LineSpacing();

    TInt FocusMargin();

private: // data

    // Own: Title of this field

    CMRLabel* iTitle;

    // Not own: Container for all the attendees

    CESMRRichTextViewer* iRichTextViewer;

    // Size of the field after field has been expanded.

    TSize iExpandedSize;

    // Size of the title

    TSize iTitleSize;

    // Inofrmation about attendee type

    CCalAttendee::TCalRole iRole;

    // Not owned. Attendee list.

    RPointerArray<CCalAttendee> iCalAttendees;

    // Show all attendees.

    TBool iShowAllAttendees;

    };

#endif // CESMRVIEWERATTENDEESFIELD_H