// Copyright (c) 2002-2009 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:

// rev:	mjdavey, symbian@mjdss.com, July 2002

// for:	Typhoon (7.0s) & JetStream (8.0)

// 

//

#include "CConsoleReader.h"

//-----------------------------------------------------------------------------

CConsoleReader* CConsoleReader::NewL(CConsoleBase& aConsole)

{

CConsoleReader* self = new (ELeave) CConsoleReader(aConsole);

return self;

}

//-----------------------------------------------------------------------------

CConsoleReader::~CConsoleReader()

{

CActive::Cancel();

}

//-----------------------------------------------------------------------------

CConsoleReader::CConsoleReader(CConsoleBase& aConsole)

	: 

	CActive(EPriorityUserInput), 

	iConsole(aConsole)

{

CActiveScheduler::Add(this);

}

//-----------------------------------------------------------------------------

void CConsoleReader::ReadLine(TDes& aData, TRequestStatus& aCallbackStatus)

{

// Set data buffer and call back request status

iData = &aData;

iCallbackStatus = &aCallbackStatus;

*iCallbackStatus = KRequestPending;

// Set mode

iMode = ELineMode;

// Issue character request

IssueRequest();

}

//-----------------------------------------------------------------------------

void CConsoleReader::ReadChar(TDes& aData, TRequestStatus& aCallbackStatus)

{

// Set data buffer and call back request status

iData = &aData;

iCallbackStatus = &aCallbackStatus;

*iCallbackStatus = KRequestPending;

// Set mode

iMode = ECharMode;

// Issue character request

IssueRequest();

}

//-----------------------------------------------------------------------------

void CConsoleReader::ReadCancel()

{

Cancel();

}

//-----------------------------------------------------------------------------

void CConsoleReader::IssueRequest()

{

__ASSERT_DEBUG( !IsActive(), User::Panic(_L("Reader"), KErrCorrupt) );

// Issue read character request

iConsole.Read(iStatus);

// Wait for request to be handled;

SetActive();

}

//-----------------------------------------------------------------------------

void CConsoleReader::RunL()

{

ProcessKeyPress(TChar(iConsole.KeyCode()));

}

//-----------------------------------------------------------------------------

void CConsoleReader::DoCancel()

{

iConsole.ReadCancel();

User::RequestComplete(iCallbackStatus, KErrCancel);

}

//-----------------------------------------------------------------------------

void CConsoleReader::ProcessKeyPress(TChar aKey)

{

TBuf<1> charBuf;

charBuf.Format(_L("%d"), (TInt)aKey);

switch( aKey )

	{

	case EKeyBackspace:

	case EKeyDelete:

		// Reduce the data length and request another key press

		if( iData->Length() > 0 )

			{

			iData->SetLength(iData->Length() - 1);

			iConsole.Write(charBuf);

			}

		if( iMode == ECharMode )

			{

			// Complete the request

			User::RequestComplete(iCallbackStatus, KErrNone);

			iCallbackStatus = NULL;

			}

		else

			{

			// Get the next key press

			IssueRequest();

			}

		break;

	case EKeyEnter:

		// Write the new line to the console and complete the callback request status

		iConsole.Write(KTxtNewLine);

		User::RequestComplete(iCallbackStatus, KErrNone);

		iCallbackStatus = NULL;

		break;

	default:

		// Append to input line, display and request another key press

		iData->Append(aKey);

		iConsole.Write(charBuf);

		if( iMode == ECharMode )

			{

			// Add a carriage return

			iConsole.Write(KTxtNewLine);

			// Complete the request

			User::RequestComplete(iCallbackStatus, KErrNone);

			iCallbackStatus = NULL;

			}

		else

			// Get the next key press

			IssueRequest();

		break;

	}

}

//-----------------------------------------------------------------------------

//	End of File

//-----------------------------------------------------------------------------