364 lines
10 KiB
Plaintext
364 lines
10 KiB
Plaintext
/*
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* Harbour Project source code:
|
|
* DBEDIT() function
|
|
*
|
|
* Copyright 1999 {list of individual authors and e-mail addresses}
|
|
* 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 of the License, or
|
|
* (at your option) any later version, with one exception:
|
|
*
|
|
* The exception is that if you link the Harbour Runtime Library (HRL)
|
|
* and/or the Harbour Virtual Machine (HVM) 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 HRL
|
|
* and/or HVM code into it.
|
|
*
|
|
* 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 program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
|
|
* their web site at http://www.gnu.org/).
|
|
*
|
|
*/
|
|
|
|
#include "common.ch"
|
|
#include "dbedit.ch"
|
|
#include "inkey.ch"
|
|
#include "setcurs.ch"
|
|
|
|
#define HB_DBEMPTY() ( LastRec() == 0 .OR. ( ( Eof() .OR. RecNo() == LastRec() + 1 ) .AND. Bof() ) )
|
|
|
|
/* NOTE: Extension: Harbour supports codeblocks as the xUserFunc parameter
|
|
[vszakats] */
|
|
/* NOTE: Clipper is buggy and will throw an error if the number of
|
|
columns is zero. (Check: dbEdit(0,0,20,20,{})) [vszakats] */
|
|
/* NOTE: Clipper will throw an error if there's no database open [vszakats] */
|
|
/* NOTE: The NG says that the return value is NIL, but it's not. [vszakats] */
|
|
/* NOTE: There's an undocumented result code in Clipper (3), which is not
|
|
supported in Harbour. [vszakats] */
|
|
/* NOTE: Harbour is multithreading ready/reentrant, Clipper is not.
|
|
[vszakats] */
|
|
|
|
FUNCTION dbEdit(;
|
|
nTop,;
|
|
nLeft,;
|
|
nBottom,;
|
|
nRight,;
|
|
acColumns,;
|
|
xUserFunc,;
|
|
xColumnSayPictures,;
|
|
xColumnHeaders,;
|
|
xHeadingSeparators,;
|
|
xColumnSeparators,;
|
|
xFootingSeparators,;
|
|
xColumnFootings )
|
|
|
|
LOCAL oBrowse
|
|
LOCAL nKey
|
|
LOCAL bAction
|
|
LOCAL lException
|
|
|
|
LOCAL nOldCursor
|
|
|
|
LOCAL nPos
|
|
LOCAL nColCount
|
|
LOCAL oColumn
|
|
LOCAL nAliasPos
|
|
LOCAL cAlias
|
|
LOCAL cFieldName
|
|
LOCAL cHeading
|
|
LOCAL cBlock
|
|
LOCAL bBlock
|
|
|
|
IF !Used()
|
|
RETURN .F.
|
|
ENDIF
|
|
|
|
/* ------------------------------------------------------ */
|
|
/* Set up the environment, evaluate the passed parameters */
|
|
/* ------------------------------------------------------ */
|
|
|
|
IF !ISNUMBER( nTop ) .OR. nTop < 0
|
|
nTop := 0
|
|
ENDIF
|
|
IF !ISNUMBER( nLeft ) .OR. nLeft < 0
|
|
nLeft := 0
|
|
ENDIF
|
|
IF !ISNUMBER( nBottom ) .OR. nBottom > MaxRow() .OR. nBottom < nTop
|
|
nBottom := MaxRow()
|
|
ENDIF
|
|
IF !ISNUMBER( nRight ) .OR. nRight > MaxCol() .OR. nRight < nLeft
|
|
nRight := MaxCol()
|
|
ENDIF
|
|
|
|
oBrowse := TBrowseDB( nTop, nLeft, nBottom, nRight )
|
|
|
|
oBrowse:SkipBlock := {| nRecs | dbEditSkipped( nRecs ) }
|
|
oBrowse:HeadSep := iif( ISCHARACTER( xHeadingSeparators ), xHeadingSeparators, Chr( 205 ) + Chr( 209 ) + Chr( 205 ) )
|
|
oBrowse:ColSep := iif( ISCHARACTER( xColumnSeparators ), xColumnSeparators, " " + Chr( 179 ) + " " )
|
|
oBrowse:FootSep := iif( ISCHARACTER( xFootingSeparators ), xFootingSeparators, "" )
|
|
oBrowse:AutoLite := .F.
|
|
|
|
// Calculate the number of columns
|
|
|
|
IF ISARRAY( acColumns )
|
|
nColCount := Len( acColumns )
|
|
nPos := 1
|
|
DO WHILE nPos <= nColCount .AND. ISCHARACTER( acColumns[ nPos ] ) .AND. !Empty( acColumns[ nPos ] )
|
|
nPos++
|
|
ENDDO
|
|
nColCount := nPos - 1
|
|
|
|
IF nColCount == 0
|
|
RETURN .F.
|
|
ENDIF
|
|
ELSE
|
|
nColCount := FCount()
|
|
ENDIF
|
|
|
|
// Generate the TBrowse columns
|
|
|
|
FOR nPos := 1 TO nColCount
|
|
|
|
IF ISARRAY( acColumns )
|
|
IF ( nAliasPos := At( "->", acColumns[ nPos ] ) ) > 0
|
|
cAlias := SubStr( acColumns[ nPos ], 1, nAliasPos - 1 )
|
|
cFieldName := SubStr( acColumns[ nPos ], nAliasPos + 2 )
|
|
cHeading := cAlias + "->;" + cFieldName
|
|
ELSE
|
|
cHeading := acColumns[ nPos ]
|
|
ENDIF
|
|
cBlock := acColumns[ nPos ]
|
|
ELSE
|
|
cBlock := FieldName( nPos )
|
|
cHeading := cBlock
|
|
ENDIF
|
|
|
|
IF Type( cBlock ) == "M"
|
|
|
|
bBlock := {|| " <Memo> " }
|
|
|
|
ELSEIF "->" $ cBlock
|
|
|
|
IF Upper( cAlias ) == "M"
|
|
bBlock := MemvarBlock( cBlock )
|
|
ELSEIF Upper( cAlias ) == "FIELD"
|
|
bBlock := FieldWBlock( cFieldName, Select() )
|
|
ELSE
|
|
bBlock := FieldWBlock( cFieldName, Select( cAlias ) )
|
|
ENDIF
|
|
|
|
ELSEIF !Empty( FieldPos( cBlock ) )
|
|
bBlock := FieldWBlock( cBlock, Select() )
|
|
ELSE
|
|
bBlock := NIL
|
|
ENDIF
|
|
|
|
IF bBlock == NIL
|
|
bBlock := &( "{||" + cBlock + "}" )
|
|
ENDIF
|
|
|
|
IF ISARRAY( xColumnHeaders ) .AND. Len( xColumnHeaders ) >= nPos .AND. ISCHARACTER( xColumnHeaders[ nPos ] )
|
|
cHeading := xColumnHeaders[ nPos ]
|
|
ELSEIF ISCHARACTER( xColumnHeaders )
|
|
cHeading := xColumnHeaders
|
|
ENDIF
|
|
|
|
//
|
|
|
|
oColumn := TBColumnNew( cHeading, bBlock )
|
|
|
|
IF ISARRAY( xColumnSayPictures ) .AND. nPos <= Len( xColumnSayPictures ) .AND. ISCHARACTER( xColumnSayPictures[ nPos ] ) .AND. !Empty( xColumnSayPictures[ nPos ] )
|
|
oColumn:Picture := xColumnSayPictures[ nPos ]
|
|
ELSEIF ISCHARACTER( xColumnSayPictures ) .AND. !Empty( xColumnSayPictures )
|
|
oColumn:Picture := xColumnSayPictures
|
|
ENDIF
|
|
|
|
IF ISARRAY( xColumnFootings ) .AND. nPos <= Len( xColumnFootings ) .AND. ISCHARACTER( xColumnFootings[ nPos ] )
|
|
oColumn:Footing := xColumnFootings[ nPos ]
|
|
ELSEIF ISCHARACTER( xColumnFootings )
|
|
oColumn:Footing := xColumnFootings
|
|
ENDIF
|
|
|
|
IF ISARRAY( xHeadingSeparators ) .AND. nPos <= Len( xHeadingSeparators ) .AND. ISCHARACTER( xHeadingSeparators[ nPos ] )
|
|
oColumn:HeadSep := xHeadingSeparators[ nPos ]
|
|
ENDIF
|
|
|
|
IF ISARRAY( xColumnSeparators ) .AND. nPos <= Len( xColumnSeparators ) .AND. ISCHARACTER( xColumnSeparators[ nPos ] )
|
|
oColumn:ColSep := xColumnSeparators[ nPos ]
|
|
ENDIF
|
|
|
|
IF ISARRAY( xFootingSeparators ) .AND. nPos <= Len( xFootingSeparators ) .AND. ISCHARACTER( xFootingSeparators[ nPos ] )
|
|
oColumn:FootSep := xFootingSeparators[ nPos ]
|
|
ENDIF
|
|
|
|
oBrowse:AddColumn( oColumn )
|
|
|
|
NEXT
|
|
|
|
/* --------------------------- */
|
|
/* Go into the processing loop */
|
|
/* --------------------------- */
|
|
|
|
IF Eof()
|
|
dbGoBottom()
|
|
ENDIF
|
|
|
|
nOldCursor := SetCursor( SC_NONE )
|
|
lException := .F.
|
|
|
|
DO WHILE .T.
|
|
|
|
DO WHILE !oBrowse:Stabilize() .AND. NextKey() == 0
|
|
ENDDO
|
|
|
|
IF ( nKey := InKey() ) == 0
|
|
|
|
IF !lException
|
|
IF !dbEditCallUser( oBrowse, xUserFunc, 0 )
|
|
oBrowse:forceStable()
|
|
EXIT
|
|
ENDIF
|
|
oBrowse:forceStable()
|
|
ENDIF
|
|
|
|
oBrowse:Hilite()
|
|
nKey := InKey( 0 )
|
|
oBrowse:DeHilite()
|
|
|
|
IF ( bAction := SetKey( nKey ) ) != NIL
|
|
Eval( bAction, ProcName( 1 ), ProcLine( 1 ), "" )
|
|
LOOP
|
|
ENDIF
|
|
|
|
ENDIF
|
|
|
|
lException := .F.
|
|
|
|
DO CASE
|
|
CASE nKey == K_DOWN ; oBrowse:Down()
|
|
CASE nKey == K_UP ; oBrowse:Up()
|
|
CASE nKey == K_PGDN ; oBrowse:PageDown()
|
|
CASE nKey == K_PGUP ; oBrowse:PageUp()
|
|
CASE nKey == K_CTRL_PGUP ; oBrowse:GoTop()
|
|
CASE nKey == K_CTRL_PGDN ; oBrowse:GoBottom()
|
|
CASE nKey == K_RIGHT ; oBrowse:Right()
|
|
CASE nKey == K_LEFT ; oBrowse:Left()
|
|
CASE nKey == K_HOME ; oBrowse:Home()
|
|
CASE nKey == K_END ; oBrowse:End()
|
|
CASE nKey == K_CTRL_LEFT ; oBrowse:PanLeft()
|
|
CASE nKey == K_CTRL_RIGHT ; oBrowse:PanRight()
|
|
CASE nKey == K_CTRL_HOME ; oBrowse:PanHome()
|
|
CASE nKey == K_CTRL_END ; oBrowse:PanEnd()
|
|
OTHERWISE
|
|
IF !dbEditCallUser( oBrowse, xUserFunc, nKey )
|
|
EXIT
|
|
ENDIF
|
|
lException := .T.
|
|
ENDCASE
|
|
ENDDO
|
|
|
|
SetCursor( nOldCursor )
|
|
|
|
RETURN .T.
|
|
|
|
STATIC FUNCTION dbEditCallUser( oBrowse, xUserFunc, nKey )
|
|
LOCAL nMode
|
|
LOCAL nResult
|
|
LOCAL nPrevRecNo
|
|
|
|
DO CASE
|
|
CASE nKey != 0 ; nMode := DE_EXCEPT
|
|
CASE HB_DBEMPTY() ; nMode := DE_EMPTY
|
|
CASE oBrowse:hitBottom() ; nMode := DE_HITBOTTOM
|
|
CASE oBrowse:hitTop() ; nMode := DE_HITTOP
|
|
OTHERWISE ; nMode := DE_IDLE
|
|
ENDCASE
|
|
|
|
oBrowse:forceStable()
|
|
|
|
nPrevRecNo := RecNo()
|
|
|
|
IF ( ISCHARACTER( xUserFunc ) .AND. !Empty( xUserFunc ) ) .OR. ISBLOCK( xUserFunc )
|
|
nResult := Do( xUserFunc, nMode, oBrowse:ColPos() )
|
|
ELSE
|
|
nResult := iif( nKey == K_ENTER .OR. nKey == K_ESC, DE_ABORT, DE_CONT )
|
|
ENDIF
|
|
|
|
IF Eof() .AND. !HB_DBEMPTY()
|
|
dbSkip( -1 )
|
|
ENDIF
|
|
|
|
IF nResult == DE_REFRESH .OR. nPrevRecNo != RecNo()
|
|
|
|
IF nResult != DE_ABORT
|
|
|
|
IF Set( _SET_DELETED ) .AND. Deleted() .OR. !Empty( dbFilter() ) .AND. ! &( dbFilter() )
|
|
dbSkip( 1 )
|
|
ENDIF
|
|
|
|
IF Eof()
|
|
dbGoBottom()
|
|
ENDIF
|
|
|
|
nPrevRecNo := RecNo()
|
|
|
|
oBrowse:RefreshAll():forceStable()
|
|
DO WHILE nPrevRecNo != RecNo()
|
|
oBrowse:Up():forceStable()
|
|
ENDDO
|
|
|
|
ENDIF
|
|
|
|
ELSE
|
|
oBrowse:Refreshcurrent()
|
|
ENDIF
|
|
|
|
RETURN nResult != DE_ABORT
|
|
|
|
STATIC FUNCTION dbEditSkipped( nRecs )
|
|
LOCAL nSkipped := 0
|
|
|
|
IF LastRec() != 0
|
|
IF nRecs == 0
|
|
IF Eof()
|
|
dbSkip( -1 )
|
|
nSkipped := -1
|
|
ELSE
|
|
dbSkip( 0 )
|
|
ENDIF
|
|
ELSEIF nRecs > 0 .AND. RecNo() != LastRec() + 1
|
|
DO WHILE nSkipped < nRecs
|
|
dbSkip( 1 )
|
|
IF Eof()
|
|
dbSkip( -1 )
|
|
EXIT
|
|
ENDIF
|
|
nSkipped++
|
|
ENDDO
|
|
ELSEIF nRecs < 0
|
|
DO WHILE nSkipped > nRecs
|
|
dbSkip( -1 )
|
|
IF Bof()
|
|
EXIT
|
|
ENDIF
|
|
nSkipped--
|
|
ENDDO
|
|
ENDIF
|
|
ENDIF
|
|
|
|
RETURN nSkipped
|
|
|