// textview.cpp

// 

// Copyright (c) 2009 - 2010 Accenture. All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the "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:

// Accenture - Initial contribution

//

#include <e32cmn.h>

#include <e32cons.h>

#include "textview.h"

#include "filebuffer.h"

CTextView::CTextView(MConsoleProvider& aConsoleProvider, CFedBufferBase& aBuffer, TInt aPriority)

	: CFedViewBase(aConsoleProvider, aPriority), iBuffer(aBuffer)

	{

	iBuffer.IncRef();

	CActiveScheduler::Add(this);

	}

void CTextView::ConstructL()

	{

	User::LeaveIfError(iBuffer.RegisterClient(*this, iDes, iRange, iRangeStartLineNumber));

	// Make iLine as big as it will ever need to be

	TSize size = iConsole.ScreenSize();

	iLine.CreateL(size.iWidth);

	}

CTextView::~CTextView()

	{

	Cancel();

	iLine.Close();

	iBuffer.DecRef();

	}

void CTextView::DoCancel()

	{

	ASSERT(EFalse);

	}

void CTextView::RunL()

{

	ASSERT(EFalse);

/*

	if(iStatus.Int() != KErrNone)

		return;

	//redraw by calling DoDrawL if iDrawPoint is within iWindow and iActive is ETrue

	switch(iState)

		{

		case EStateGetData:

			iState = EStateNone;

			if(iActive)

				DoDrawL();

			break;

		default:;

		}

*/

}

TInt CTextView::RunError(TInt aError)

{

	return aError;

}

//MViewController

void CTextView::ShowCursor()

	{

	if (iBuffer.Editable())

		{

		// Don't show a cursor if the file isn't editable

		iConsole.SetCursorHeight(20);

		}

	}

void CTextView::HideCursor()

	{

	iConsole.SetCursorHeight(0);

	}

void CTextView::ResizeL(const TWindow& aWindow)

	{

	iActive = ETrue;

	TWindow oldWindow = iWindow;

	StoreWindow(aWindow);

	iLine.Zero();

	iLine.ReAllocL(iConsole.ScreenSize().iWidth);

	DoResizeL(oldWindow);

	}

void CTextView::RedrawL(const TWindow& aWindow)

	{

	iActive = ETrue;

	StoreWindow(aWindow);

	DoRedrawL();

	}

void CTextView::DeactivateL()

	{

	iActive = EFalse;

	}

//MSharedCacheClient

void CTextView::InvalidateBuffer(TRequestStatus& aStatus)

{

	aStatus = KRequestPending;

	iDes.Set(NULL, 0);

	TRequestStatus* stat = &aStatus;

	User::RequestComplete(stat, KErrNone);

}

void CTextView::RequestData(TBool aFromTheTop, TInt aOffset)

	{

	if (aFromTheTop) iDrawPoint.SetXY(iWindow.iX, iWindow.iY);

	TInt err = iBuffer.GetData(*this, aOffset);

	if (err)

		{

		HandleDataLoadError(err);

		}

	else

		{

		DoDrawL();

		}

	}

void CTextView::SeekData(TInt aDocumentPosition, TInt aNumLines)

	{

	if (aDocumentPosition == 0 && aNumLines <= 0)

		{

		// Nothing to do

		return;

		}

	iDrawPoint.SetXY(iWindow.iX, iWindow.iY); // Seeks always cause a redraw from the top

	TInt err = iBuffer.SeekFromOffset(*this, aDocumentPosition, aNumLines, iWindow.iWidth-1); // minus one because we can't use the last char

	if (err)

		{

		HandleDataLoadError(err);

		}

	else

		{

		DoDrawL();

		}

	}

void CTextView::UpdateCursor(const TPoint& aNewPos)

	{

	ASSERT(aNewPos.iX >= 0);

	ASSERT(aNewPos.iY >= 0);

	iCursor = aNewPos;

	ValidateCursor();

	if (iActive)

		{

		ShowCursor();

		iConsole.SetCursorPosAbs(iCursor + iWindow.Origin());

		}

	}

void CTextView::ValidateCursor()

	{

	// Subclasses can override for additional validation

	if(iCursor.iX < 0)

		iCursor.iX = 0;

	if(iCursor.iX >= iWindow.iWidth)

		iCursor.iX = iWindow.iWidth - 1;

	if(iCursor.iY < 0)

		iCursor.iY = 0;

	if(iCursor.iY >= iWindow.iHeight)

		iCursor.iY = iWindow.iHeight -1;

	}

CFedBufferBase& CTextView::Buffer()

	{

	return iBuffer;

	}

void CTextView::HandleDataLoadError(TInt aError)

	{

	iConsoleProvider.InfoPrint(_L("Error loading data: %d"), aError);

	}