/* * $Id$ */ /* * Harbour Project source code: * Text file browser class * * Copyright 2001 Maurilio Longo * www - http://www.harbour-project.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this software; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/). * * As a special exception, the Harbour Project gives permission for * additional uses of the text contained in its release of Harbour. * * The exception is that, if you link the Harbour libraries with other * files to produce an executable, this does not by itself cause the * resulting executable to be covered by the GNU General Public License. * Your use of that executable is in no way restricted on account of * linking the Harbour library code into it. * * This exception does not however invalidate any other reasons why * the executable file might be covered by the GNU General Public License. * * This exception applies only to the code released by the Harbour * Project under the name Harbour. If you copy code from other * Harbour Project or Free Software Foundation releases into a copy of * Harbour, as the General Public License permits, the exception does * not apply to the code that you add in this way. To avoid misleading * anyone as to the status of such modified files, you must delete * this exception notice from them. * * If you write modifications of your own for Harbour, it is your choice * whether to permit this exception to apply to your modifications. * If you do not wish that, delete this exception notice. * */ #include "hbclass.ch" #include "common.ch" #include "fileio.ch" #include "inkey.ch" // Color definitions and positions inside ::cColorSpec #define CLR_CODE 0 // color of code #define CLR_CURSOR 1 // color of hilighted line #define CLR_BKPT 2 // color of breakpoint line #define CLR_HIBKPT 3 // color of hilighted breakpoint line CLASS TBrwText FROM TEditor DATA cFileName // the name of the browsed file DATA nActiveLine // Active line inside Code Window (last executed one) DATA aBreakPoints // Array with line numbers of active Break Points DATA lLineNumbers // If .T. source code lines are preceded by their number METHOD New(nTop, nLeft, nBottom, nRight, cFileName, cColor) METHOD GoTop() // Methods available on a standard TBrowse, needed to handle a TEditor like a TBrowse METHOD GoBottom() METHOD Up() METHOD Down() METHOD Left() METHOD Right() METHOD PageUp() METHOD PageDown() METHOD RefreshAll() METHOD RefreshCurrent() METHOD GotoLine(n) // Moves active line cursor, that is it hilights last executed line of code METHOD GetLine(nRow) // Redefine TEditor method to add line number METHOD LineColor(nRow) // Redefine TEditor method to handle line coloring METHOD ToggleBreakPoint(nRow, lSet) // if lSet is .T. there is a BreakPoint active at nRow, // if lSet is .F. BreakPoint at nRow has to be removed METHOD Search( cString, lCaseSensitive, nMode ) // 0 from Begining to end, 1 Forward, 2 Backwards ENDCLASS METHOD New(nTop, nLeft, nBottom, nRight, cFileName, cColor) CLASS TBrwText DEFAULT cColor TO SetColor() ::cFileName := cFileName ::nActiveLine := 1 ::aBreakPoints := {} ::lLineNumbers := .T. Super:New("", nTop, nLeft, nBottom, nRight, .T.) Super:SetColor(cColor) Super:LoadFile(cFileName) return Self METHOD GoTop() CLASS TBrwText ::MoveCursor(K_CTRL_PGUP) return Self METHOD GoBottom() CLASS TBrwText ::MoveCursor(K_CTRL_PGDN) return Self METHOD Up() CLASS TBrwText ::MoveCursor(K_UP) return Self METHOD Left() CLASS TBrwText ::MoveCursor(K_LEFT) return Self METHOD Right() CLASS TBrwText ::MoveCursor(K_RIGHT) return Self METHOD Down() CLASS TBrwText ::MoveCursor(K_DOWN) return Self METHOD PageUp() CLASS TBrwText ::MoveCursor(K_PGUP) return Self METHOD PageDown() CLASS TBrwText ::MoveCursor(K_PGDN) return Self METHOD RefreshAll() CLASS TBrwText ::RefreshWindow() return Self METHOD RefreshCurrent() CLASS TBrwText ::RefreshLine() return Self METHOD GotoLine(n) CLASS TBrwText // We need to set active line before calling ::RefreshLine() since ::LineColor() // uses nActiveLine to decide which color to use to paint line ::nActiveLine := n ::RefreshLine() Super:GotoLine(n) // I need to call ::RefreshLine() here because TEditor does not repaint current line // if it needs not to and without this explicit call I don't see ActiveLine cursor movement ::RefreshLine() return Self METHOD GetLine(nRow) CLASS TBrwText return iif(::lLineNumbers, AllTrim(Str(nRow)) + ": ", "") + Super:GetLine(nRow) METHOD LineColor(nRow) CLASS TBrwText local cColor, lHilited, lBreak lHilited := (nRow == ::nActiveLine) lBreak := AScan(::aBreakPoints, nRow) > 0 if lHilited .AND. lBreak cColor := hb_ColorIndex(::cColorSpec, CLR_HIBKPT) elseif lHilited cColor := hb_ColorIndex(::cColorSpec, CLR_CURSOR) elseif lBreak cColor := hb_ColorIndex(::cColorSpec, CLR_BKPT) else cColor := hb_ColorIndex(::cColorSpec, CLR_CODE) endif return cColor METHOD ToggleBreakPoint(nRow, lSet) CLASS TBrwText local nAt := AScan(::aBreakPoints, nRow) if lSet // add it only if not present if nAt == 0 AAdd(::aBreakPoints, nRow) endif else if nAt <> 0 ADel( ::aBreakPoints, nAt ) ASize( ::aBreakPoints, Len( ::aBreakPoints ) - 1 ) endif endif return Self METHOD Search( cString, lCaseSensitive, nMode ) CLASS TBrwText local nFrom, nTo, nStep, nFor local lFound DEFAULT lCaseSensitive TO .f., ; nMode TO 0 lFound := .f. if !lCaseSensitive cString := Upper( cString ) endif do case case nMode == 0 // From Top nFrom := 1 nTo := ::naTextLen nStep := 1 case nMode == 1 // Forward nFrom := Min( ::nRow + 1, ::naTextLen ) nTo := ::naTextLen nStep := 1 case nMode == 2 // Backward nFrom := Max( ::nRow - 1, 1 ) nTo := 1 nStep := -1 end case for nFor := nFrom to nTo Step nStep if cString $ iif( lCaseSensitive, ::GetLine( nFor ), Upper( ::GetLine( nFor ) ) ) lFound := .t. ::GotoLine( nFor ) exit endif next return lFound