81c9b0506c
* contrib/*
* Deleted 'www.' from harbour-project.org website name.
(www.harbour-project.org -> harbour-project.org)
248 lines
6.9 KiB
Plaintext
248 lines
6.9 KiB
Plaintext
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* Browse() for ODBC data
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*
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* Copyright 1999 Antonio Linares <alinares@fivetech.com> for code derived from browse.prg
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* Copyright 1999-2001 Viktor Szakats (harbour.01 syenar.hu) for original FieldBlock function
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* Copyright 1999 Paul Tucker <ptucker@sympatico.ca> for original Skipped function
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* Copyright 2002 Tomaz Zupan <tomaz.zupan@orpo.si> modifications for ODBC
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* www - http://harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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/* CREDITS:
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* This code is mostly derived work from harbours RTL browse.prg, browdb.prg.
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* and fieldbl.prg. Only minor changes were needed to adapt them to ODBC.
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*/
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#include "common.ch"
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#include "inkey.ch"
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#include "setcurs.ch"
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FUNCTION BrowseODBC( nTop, nLeft, nBottom, nRight, oDataSource )
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LOCAL oBrw
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LOCAL cOldScreen
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LOCAL n, nOldCursor
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LOCAL nKey := 0
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LOCAL lExit := .F.
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LOCAL bAction
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LOCAL oColumn
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// TODO: Check if datasource is open
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// IF ! Used()
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// RETURN .F.
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// ENDIF
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IF PCount() < 4
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nTop := 1
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nLeft := 0
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nBottom := MaxRow()
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nRight := MaxCol()
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ENDIF
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nOldCursor := SetCursor( SC_NONE )
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cOldScreen := SaveScreen( nTop, nLeft, nBottom, nRight )
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@ nTop, nLeft TO nBottom, nRight
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@ nTop + 1, nLeft + 1 SAY Space( nRight - nLeft - 1 )
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oBrw := TBrowseNew( nTop + 2, nLeft + 1, nBottom - 1, nRight - 1 )
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oBrw:SkipBlock := { | nRecs | Skipped( nRecs,oDataSource ) }
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oBrw:GoTopBlock := { || oDataSource:first() }
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oBrw:GoBottomBlock := { || oDataSource:last() }
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oBrw:HeadSep := "-"
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// TODO: Find out number of columns in ODBC result set, up to then you have to add columns by hand
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FOR n := 1 to Len( oDataSource:Fields )
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oColumn:= TBColumn():New( oDataSource:Fields[ n ]:FieldName, ODBCFget( oDataSource:Fields[ n ]:FieldName, oDataSource ) )
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oBrw:AddColumn( oColumn )
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NEXT
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oBrw:Configure()
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oBrw:ForceStable()
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DO WHILE ! lExit
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IF nKey == 0
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DO WHILE !oBrw:stabilize() .AND. NextKey() == 0
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ENDDO
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ENDIF
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IF NextKey() == 0
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oBrw:forceStable()
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Statline( oBrw, oDataSource)
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nKey := Inkey( 0 )
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IF ( bAction := SetKey( nKey ) ) != NIL
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Eval( bAction, ProcName( 1 ), ProcLine( 1 ), "" )
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LOOP
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ENDIF
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ELSE
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nKey := Inkey()
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ENDIF
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DO CASE
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CASE nKey == K_ESC
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lExit := .T.
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CASE nKey == K_UP
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oBrw:Up()
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CASE nKey == K_DOWN
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oBrw:Down()
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CASE nKey == K_END
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oBrw:End()
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CASE nKey == K_HOME
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oBrw:Home()
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CASE nKey == K_LEFT
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oBrw:Left()
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CASE nKey == K_RIGHT
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oBrw:Right()
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CASE nKey == K_PGUP
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oBrw:PageUp()
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CASE nKey == K_PGDN
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oBrw:PageDown()
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CASE nKey == K_CTRL_PGUP
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oBrw:GoTop()
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CASE nKey == K_CTRL_PGDN
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oBrw:GoBottom()
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CASE nKey == K_CTRL_LEFT
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oBrw:panLeft()
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CASE nKey == K_CTRL_RIGHT
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oBrw:panRight()
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CASE nKey == K_CTRL_HOME
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oBrw:panHome()
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CASE nKey == K_CTRL_END
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oBrw:panEnd()
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ENDCASE
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ENDDO
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RestScreen( nTop, nLeft, nBottom, nRight, cOldScreen )
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SetCursor( nOldCursor )
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RETURN .T.
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STATIC PROCEDURE Statline( oBrw, oDataSource )
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LOCAL nTop := oBrw:nTop - 1
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LOCAL nRight := oBrw:nRight
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@ nTop, nRight - 27 SAY "Record "
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IF oDataSource:LastRec() == 0
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@ nTop, nRight - 20 SAY "<none> "
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ELSEIF oDataSource:RecNo() == oDataSource:LastRec() + 1
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@ nTop, nRight - 40 SAY " "
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@ nTop, nRight - 20 SAY " <new>"
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ELSE
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@ nTop, nRight - 20 SAY PadR( LTrim( Str( oDataSource:RecNo() ) ) + "/" +;
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Ltrim( Str( oDataSource:LastRec() ) ), 16 ) +;
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iif( oBrw:hitTop, "<bof>", " " )+;
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iif( oBrw:hitBottom, "<eof>", " " )
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ENDIF
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RETURN
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STATIC FUNCTION Skipped( nRecs, oDataSource )
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LOCAL nSkipped := 0
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IF ! oDataSource:Eof()
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IF nRecs == 0
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// ODBC doesn't have Skip( 0 )
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ELSEIF nRecs > 0
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DO WHILE nSkipped < nRecs
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IF ! oDataSource:Eof()
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oDataSource:next( )
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IF oDataSource:Eof()
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oDataSource:prior( )
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EXIT
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ENDIF
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nSkipped++
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ENDIF
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ENDDO
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ELSEIF nRecs < 0
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DO WHILE nSkipped > nRecs
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IF ! oDataSource:Bof()
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oDataSource:prior( )
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IF oDataSource:Bof()
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EXIT
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ENDIF
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nSkipped--
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ENDIF
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ENDDO
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ENDIF
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ENDIF
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RETURN nSkipped
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STATIC FUNCTION ODBCFGet( cFieldName, oDataSource )
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IF ISCHARACTER( cFieldName )
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// For changing value rather write a decent SQL statement
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RETURN {| x | iif( x == NIL, oDataSource:FieldByName( cFieldName ):value, NIL ) }
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ENDIF
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RETURN NIL
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