/*

* Copyright (c) 2005-2009 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: 

*

*/

 /********************************************************************************

 *

 * System Includes

 *

 ********************************************************************************/

#include <e32std.h>

#include <e32base.h>

#include <eikenv.h>

/********************************************************************************

 *

 * Local Includes

 *

 ********************************************************************************/

#include "MsgWin.h"

/********************************************************************************

 *

 * TMsgWinDesOverflow

 *

 * Locally defined class to allow us to handle a text buffer overflow

 * within the call to 'AppendFormat' used to format the text for

 * the message window.

 *

 * If the overflow occurs the overridden method 'Overflow' is called.

 *

 ********************************************************************************/

class TMsgWinDesOverflow : public TDesOverflow

{

public:

	// From base interface class TDesOverflow.

	/* virtual */ void Overflow( TDes &aDes );

};

/********************************************************************************

 *

 * TMsgWinDesOverflow -- Overflow implementation

 *

 * Called if the buffer overflowed in the call to AppendFormat.

 * We replace the last few character with ellipses to indicate there

 * was more text that could not be shown.

 * The user has lost the end of their text anyway so changing the last few

 * characters will not make things worse.

 *

 ********************************************************************************/

void TMsgWinDesOverflow::Overflow( TDes &aDes )

{

	_LIT( ellipses, "..." );

	const TInt ellipsesLength = ellipses.operator const TDesC&().Length();

	TInt textLength = aDes.MaxLength();

	aDes.Replace( textLength - ellipsesLength, ellipsesLength, ellipses );

}

/********************************************************************************

 *

 * TMsgWin::Show

 *

 * Format the text the user passed and show a simple message window.

 * If the text was too long for our fixed buffer then we handle

 * the buffer overflow.

 *

 ********************************************************************************/

void TMsgWin::Show( TPtrC text, ... )

{

	static const TInt defLength = 64;

	TBuf<defLength> buffer(  _L("") );

	VA_LIST list;

	VA_START( list, text );

	buffer.Zero();

	// Use locally defined call for handling overflows.

	TMsgWinDesOverflow	overflowHandler;

	buffer.AppendFormatList( text, list, &overflowHandler);

	VA_END(list);

	CEikonEnv::Static()->AlertWin( buffer, _L("") );

}