// cmdwindow.cpp+
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// +
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// Copyright (c) 2009 - 2010 Accenture. All rights reserved.+
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// This component and the accompanying materials are made available+
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// under the terms of the "Eclipse Public License v1.0"+
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// which accompanies this distribution, and is available+
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".+
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// +
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// Initial Contributors:+
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// Accenture - Initial contribution+
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//+
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#include "cmdwindow.h"+
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#include <e32cons.h>+
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#include <BADESCA.H>+
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+
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const TInt KInfoPrintTime = 2500000; // 2.5 seconds+
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+
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CCommandWindow* CCommandWindow::NewL(RFs& aFs, CColorConsoleBase& aConsole)+
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	{+
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	CCommandWindow* self = new(ELeave) CCommandWindow(aFs, aConsole);+
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	CleanupStack::PushL(self);+
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	self->ConstructL();+
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	CleanupStack::Pop(self);+
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	return self;+
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	}+
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+
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CCommandWindow* CCommandWindow::NewL(RFs& aFs, CConsoleBase& aConsole)+
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	{+
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	CCommandWindow* self = new(ELeave) CCommandWindow(aFs, aConsole);+
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	CleanupStack::PushL(self);+
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	self->ConstructL();+
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	CleanupStack::Pop(self);+
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	return self;+
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	}+
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+
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CCommandWindow::CCommandWindow(RFs& aFs, CConsoleBase& aConsole)+
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	: iFs(aFs), iConsole(aConsole), iColorConsole(NULL), iConsoleAdapter(aConsole)+
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	{}+
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+
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CCommandWindow::CCommandWindow(RFs& aFs, CColorConsoleBase& aConsole)+
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	: iFs(aFs), iConsole(aConsole), iColorConsole(&aConsole), iConsoleAdapter(aConsole)+
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	{}+
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+
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void CCommandWindow::ConstructL()+
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	{+
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	iInfoPrintDismisser = CPeriodic::NewL(CActive::EPriorityStandard);+
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	TBuf<64> buf;+
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+
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	User::LeaveIfError(iFs.PrivatePath(buf));+
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	buf.Insert(0, _L("c:"));+
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	buf.Append(_L("fed_filehistory"));+
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	iFileNameLineEditor = CLineEditor::NewL(iFs, iConsoleAdapter, *this, *this, buf);+
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+
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	User::LeaveIfError(iFs.PrivatePath(buf));+
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	buf.Insert(0, _L("c:"));+
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	buf.Append(_L("fed_generalhistory"));+
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	iGeneralLineEditor = CLineEditor::NewL(iFs, iConsoleAdapter, *this, *this, buf);+
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	}+
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+
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CCommandWindow::~CCommandWindow()+
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	{+
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	if (iInfoPrintDismisser) iInfoPrintDismisser->Cancel();+
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	delete iInfoPrintDismisser;+
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	delete iGeneralLineEditor;+
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	delete iFileNameLineEditor;+
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	}+
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+
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CConsoleBase& CCommandWindow::Console()+
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	{+
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	return iConsole;+
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	}+
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+
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CColorConsoleBase* CCommandWindow::ColorConsole()+
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	{+
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	return iColorConsole;+
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	}+
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+
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class TOverflow16 : public TDes16Overflow+
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	{+
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public:+
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	void Overflow(TDes16 &) {}+
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	};+
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+
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void CCommandWindow::WriteStatus(const TDesC& aNameToTruncate, TRefByValue<const TDesC> aFmt, ...)+
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	{+
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	TDes& buf = iLastStatus;+
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	buf.Zero();+
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	VA_LIST args;+
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	VA_START(args, aFmt);+
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	TOverflow16 overflow;+
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	buf.AppendFormatList(aFmt, args, &overflow);+
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	VA_END(args);+
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+
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	const TInt availWidth = iWindow.iWidth - 1;+
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	buf.SetLength(Min(buf.Length(), availWidth));+
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	TInt widthForName = availWidth - buf.Length();+
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	buf.Insert(0, aNameToTruncate.Right(widthForName));+
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	if (buf.Length() < iWindow.iWidth) buf.Append(' ');+
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	buf.AppendFill('-', iWindow.iWidth - buf.Length() - 1); // Don't fill to edge of screen, that causes a wrap+
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+
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	DoWriteLine(buf);+
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	}+
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+
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void CCommandWindow::DoWriteLine(const TDesC& aLine, TInt aHighlightStart, TInt aHighlightLength)+
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	{+
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	TPoint cursor = iConsole.CursorPos();+
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	iConsole.SetCursorHeight(0);+
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	iConsole.SetPos(iWindow.iX, iWindow.iY);+
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	if (aHighlightLength && ColorConsole())+
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		{+
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		TPtrC left = aLine.Left(aHighlightStart);+
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		TPtrC mid = aLine.Mid(aHighlightStart, aHighlightLength);+
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		TPtrC right = aLine.Mid(aHighlightStart + aHighlightLength);+
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		ColorConsole()->Write(left);+
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		ColorConsole()->SetTextAttribute(ETextAttributeInverse);+
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		ColorConsole()->Write(mid);+
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		ColorConsole()->SetTextAttribute(ETextAttributeNormal);+
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		ColorConsole()->Write(right);+
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		}+
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	else+
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		{+
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		iConsole.Write(aLine);+
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		}+
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	iConsole.SetCursorPosAbs(cursor);+
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	iConsole.SetCursorHeight(20);+
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	}+
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+
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void CCommandWindow::InfoPrint(TRefByValue<const TDesC> aFmt, ...)+
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	{+
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	iInfoPrintDismisser->Cancel(); // If there's already a print onscreen, we bin it straight away (same as how User::InfoPrint works)+
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	TBuf<256> buf;+
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	VA_LIST args;+
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	VA_START(args, aFmt);+
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	TOverflow16 overflow;+
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	buf.AppendFormatList(aFmt, args, &overflow);+
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	VA_END(args);+
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+
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	buf.SetLength(Min(buf.Length(), iWindow.iWidth-5)); // 4 for -[ and ]-, and one more to avoid hitting the final column+
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	TInt highlightLen = buf.Length() + 2; // Highlight the [] as well+
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	buf.Insert(0, _L("-["));+
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	buf.Append(_L("]-"));+
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	TInt fillWidth = iWindow.iWidth - buf.Length() - 1;+
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	TInt left = fillWidth / 2;+
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	TInt highlightStart = left+1;+
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	TInt right = fillWidth - left;+
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	while(left--)+
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		{+
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		buf.Insert(0, _L("-"));+
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		}+
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	buf.AppendFill('-', right);+
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	DoWriteLine(buf, highlightStart, highlightLen);+
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	iInfoPrintDismisser->Start(KInfoPrintTime, KInfoPrintTime, TCallBack(&DismissInfoPrint, this));+
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	}+
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+
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TInt CCommandWindow::DismissInfoPrint(TAny* aSelf)+
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	{+
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	CCommandWindow* self = static_cast<CCommandWindow*>(aSelf);+
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	// Restore previous status+
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	self->DoWriteLine(self->iLastStatus);+
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	self->iInfoPrintDismisser->Cancel();+
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	return 0;+
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	}+
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+
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TKeyCode CCommandWindow::Query(const TDesC& aPrompt, const TDesC& aValidKeys)+
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	{+
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	TPoint cursor = iConsole.CursorPos();+
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	iQuery = aPrompt;+
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	iQuery.Append(_L("[ ]"));+
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	iQuery.AppendFill('-', iQuery.MaxLength() - iQuery.Length());+
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	iQuery.SetLength(iWindow.iWidth - 1);+
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	DoWriteLine(iQuery);+
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	iConsole.SetPos(iWindow.iX + aPrompt.Length()+1, iWindow.iY);+
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	iConsole.SetCursorHeight(20);+
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	TKeyCode res = EKeyNull;+
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	while (aValidKeys.Locate(res) == KErrNotFound)+
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		{+
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		res = iConsole.Getch();+
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		}+
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	// Print the key that the user entered, between the square brackets+
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	if (TChar(res).IsPrint())+
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		{+
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		TBuf<1> chbuf;+
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		chbuf.Append(res);+
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		iConsole.Write(chbuf);+
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		}+
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	iConsole.SetCursorPosAbs(cursor);+
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	// Async clear the query (in case we are called repeatedly)+
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	iInfoPrintDismisser->Cancel();+
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	iInfoPrintDismisser->Start(0, KInfoPrintTime, TCallBack(&DismissInfoPrint, this));+
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	return res;+
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	}+
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+
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TBool CCommandWindow::QueryText(const TDesC& aPrompt, TDes& aText)+
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	{+
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	iLineEditor = iGeneralLineEditor;+
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	return DoQueryText(aPrompt, aText);+
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	}+
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+
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TBool CCommandWindow::QueryFilename(const TDesC& aPrompt, TFileName& aFileName)+
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	{+
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	iLineEditor = iFileNameLineEditor;+
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	TBool res = DoQueryText(aPrompt, aFileName);+
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	if (res)+
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		{+
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		IoUtils::TFileName2 fn2(aFileName);+
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		TRAPD(err, fn2.MakeAbsoluteL(iFs));+
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		if (err) res = EFalse;+
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		aFileName.Copy(fn2);+
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		}+
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	return res;+
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	}+
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+
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TBool CCommandWindow::DoQueryText(const TDesC& aPrompt, TDes& aText)+
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	{+
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	// Get cursor in right position+
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	TPoint cursor = iConsole.CursorPos();+
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	// Clear the way+
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	iConsole.SetPos(iWindow.iX, iWindow.iY);+
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	iQuery.Fill(' ', iWindow.iWidth-1);+
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	iConsole.Write(iQuery);+
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	iConsole.SetPos(iWindow.iX, iWindow.iY);+
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	// Start the line editor going+
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	iLineEditor->Start(aPrompt, aText);+
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	iLineEditor->ReinstatePromptAndUserInput();+
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	iFinished = EFalse;+
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	TBool result = ETrue;+
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	iResultForQuery = &aText;+
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	while (!iFinished)+
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		{+
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		TKeyCode ch = iConsole.Getch();+
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		if (ch == EKeyEscape) +
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			{+
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			result = EFalse;+
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			break;+
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			}+
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		if (ch == EKeyEnter)+
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			{+
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			// Fool line editor by moving cursor up a line, so when it does its newline it doesn't screw us up+
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			iConsole.SetCursorPosRel(TPoint(0, -1));+
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			}+
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		iLineEditor->HandleKey(ch, iConsole.KeyModifiers());+
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		}+
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	iConsole.SetCursorPosAbs(cursor);+
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	// Async clear the query (in case of... something. Velociraptors maybe?)+
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	iInfoPrintDismisser->Cancel();+
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	iInfoPrintDismisser->Start(0, KInfoPrintTime, TCallBack(&DismissInfoPrint, this));+
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	return result;+
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	}+
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+
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RFs& CCommandWindow::Fs()+
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	{+
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	return iFs;+
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	}+
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+
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void CCommandWindow::LeoHandleLine(const TDesC& aLine)+
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	{+
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	iFinished = ETrue;+
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	*iResultForQuery = aLine.Left(iResultForQuery->MaxLength());+
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	}+
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+
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_LIT(KFileNameSlash, "\\");+
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_LIT(KDriveColonSlash, ":\\");+
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_LIT(KTab, "\t");+
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_LIT(KSpace, " ");+
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+
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// This code ripped from ptf+
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void CCommandWindow::LcCompleteLineL(TConsoleLine& aLine, const TChar& /*aEscapeChar*/)+
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	{+
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	if (iLineEditor != iFileNameLineEditor) return; // Don't autocomplete for anything that isn't a filename+
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+
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	IoUtils::TFileName2 fileNameMatch;+
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	fileNameMatch.Copy(aLine.ContentsToCursor());+
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	+
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	CDesCArray* suggestions = new(ELeave) CDesC16ArrayFlat(16);+
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	CleanupStack::PushL(suggestions);+
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+
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	if (fileNameMatch.Length()==0)+
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		{+
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		SuggestDrivesL(suggestions);+
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		}+
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	else if (fileNameMatch.Length() == 2 && TChar(fileNameMatch[0]).IsAlpha() && fileNameMatch[1] == ':')+
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		{+
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		fileNameMatch.Append(KFileNameSlash);+
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		}+
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+
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	if (!fileNameMatch.IsAbsolute())+
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		{+
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		fileNameMatch.MakeAbsoluteL(iFs);+
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		}+
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	+
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	TPtrC relativeDir = aLine.ContentsToCursor();+
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	relativeDir.Set(relativeDir.Left(relativeDir.LocateReverse('\\')+1)); // Remove any name to the right of the last backslash+
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		+
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	fileNameMatch.Append('*');+
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	+
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	CDir* files = NULL;+
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	User::LeaveIfError(iFs.GetDir(fileNameMatch, KEntryAttNormal | KEntryAttDir, ESortByName, files));+
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	CleanupStack::PushL(files);+
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		+
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	TInt numFiles = files->Count();+
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	if (numFiles == 1)+
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		{+
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		fileNameMatch.SetLength(fileNameMatch.DriveAndPath().Length());+
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		fileNameMatch.AppendComponentL((*files)[0].iName);+
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		TEntry entry;+
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		User::LeaveIfError(iFs.Entry(fileNameMatch, entry));+
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		suggestions->AppendL(fileNameMatch.NameAndExt());+
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		CompleteL(aLine, *suggestions, &relativeDir, entry.IsDir() ? &KFileNameSlash : NULL);+
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		}+
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	else if (numFiles > 0)+
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		{+
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		for (TInt i=0; i<numFiles; ++i)+
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			{+
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			suggestions->AppendL((*files)[i].iName);+
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			}+
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		CompleteL(aLine, *suggestions, &relativeDir, NULL);+
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		}+
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	+
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	CleanupStack::PopAndDestroy(2, suggestions); // files, suggestions+
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	}+
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+
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void CCommandWindow::SuggestDrivesL(CDesCArray* aSuggestions)+
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	{+
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	TDriveList drives;+
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	User::LeaveIfError(iFs.DriveList(drives));+
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	+
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	for (TInt i=0; i<drives.Length(); ++i)+
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		{+
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		if (drives[i])+
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			{+
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			TBuf<3> buf;+
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			+
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			TChar driveChar;+
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			User::LeaveIfError(iFs.DriveToChar(i, driveChar));+
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			+
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			buf.Append(driveChar);+
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			buf.Append(KDriveColonSlash);+
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			aSuggestions->AppendL(buf);						+
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			}+
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		}+
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	}+
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	+
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void CCommandWindow::CompleteL(TConsoleLine& aLine, const CDesCArray& aPossibilities, const TDesC* aPrefix, const TDesC* aSuffix)+
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	{+
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	const TInt numPossibilities = aPossibilities.Count();+
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+
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	if (numPossibilities > 1)+
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		{+
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		// Fill out possibilities buffer.+
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		IoUtils::CTextBuffer* possibilities = IoUtils::CTextBuffer::NewLC(0x100);+
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		for (TInt i = 0; i < numPossibilities; ++i)+
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			{+
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			possibilities->AppendL(aPossibilities[i]);+
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			if (i != (numPossibilities - 1))+
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				{+
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				possibilities->AppendL(KTab);+
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				}+
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			}+
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+
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		aLine.PrintCompletionPossibilitiesL(possibilities->Descriptor());+
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		CleanupStack::PopAndDestroy(possibilities);+
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		}+
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+
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	if (numPossibilities > 0)+
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		{+
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		IoUtils::CTextBuffer* completion = IoUtils::CTextBuffer::NewLC(0x100);+
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		TPtrC commonChars(NULL, 0);+
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		if (numPossibilities > 1)+
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			{+
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			// Find common leading characters of the possibilities.+
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			TInt commonCharPos = -1;+
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			TBool finished(EFalse);+
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			do+
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				{+
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				++commonCharPos;+
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				TChar character(0);+
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				for (TInt i = 0; i < numPossibilities; ++i)+
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					{+
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					if (commonCharPos >= aPossibilities[i].Length())+
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						{+
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						finished = ETrue;+
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						break;+
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						}+
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					else if (i == 0)+
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						{+
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						character = aPossibilities[0][commonCharPos];+
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						character.Fold();+
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						}+
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					else+
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						{+
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						TChar c(aPossibilities[i][commonCharPos]);+
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						c.Fold();+
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						if (c != character)+
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							{+
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							finished = ETrue;+
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							break;+
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							}+
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						}+
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					}+
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				}+
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				while (!finished);+
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+
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			commonChars.Set(aPossibilities[0].Mid(0, commonCharPos));+
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			}+
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		else+
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			{+
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			commonChars.Set(aPossibilities[0]);+
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			}+
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+
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		if (aPrefix)+
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			{+
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			completion->AppendL(*aPrefix);+
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			}+
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		completion->AppendL(commonChars);+
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+
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		if ((numPossibilities == 1) && (aSuffix))+
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			{+
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			completion->AppendL(*aSuffix);+
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			}+
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			+
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		if ((numPossibilities == 1) && (!aSuffix))+
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			{+
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			completion->AppendL(KSpace);+
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			}+
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			+
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		if (completion->Descriptor().Length() > 0)+
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			{+
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			aLine.Replace(0, completion->Descriptor());+
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			}+
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		CleanupStack::PopAndDestroy(completion);+
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		}+
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	}+
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