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- #!/usr/bin/wish -f
- # 'CBB' -- Check Book Balancer
- #
- # undo.tcl -- Undo routines.
- #
- # Written by Curtis Olson. Started December 7, 1996.
- #
- # Copyright (C) 1994 - 1997 Curtis L. Olson - curt@sledge.mn.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.
- #
- # 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.
- #
- # $Id: undo.tcl,v 2.5 1997/04/11 20:26:52 curt Exp $
- # (Log is kept at end of this file)
-
-
- #------------------------------------------------------------------------------
- # Procedures to handle undo functionality
- #------------------------------------------------------------------------------
-
- proc undoInit {} {
- global undo
-
- set undo(command) ""
- set undo(data) ""
- }
-
- proc undoRegister arg {
- global undo
-
- set pos [string first " " $arg]
- set undo(command) [string range $arg 0 [expr $pos - 1]]
- set undo(data) [string range $arg [expr $pos + 1] end]
- }
-
- proc undoAction {} {
- global cbb key eng undo
-
- if { $cbb(debug) } { puts "un$undo(command) $undo(data)" }
-
- if { "$undo(command)" == "delete" } {
- # reinsert
-
- update_globals $undo(data)
- set key ""
- done_entering
- } elseif { "$undo(command)" == "insert" } {
- # delete
-
- set pos [string first "\t" $undo(data)]
- set key [string range $undo(data) 0 [expr $pos - 1]]
-
- puts $eng "delete_trans $key"; flush $eng
- gets $eng result
- if { $cbb(debug) } { puts "deleting: $result" }
-
- set cbb(index1) [find_index_from_key [listGetSize] $key]
- if { [expr $cbb(index1) < 0] } {
- set cbb(index1) 0
- }
- update_rest $cbb(index1) $key
- } elseif { "$undo(command)" == "edit" } {
- # change back
-
- set newkey [string range $undo(data) 0 10]
- if { $cbb(debug) } { puts "first need to delete $newkey" }
- puts $eng "delete_trans $newkey"; flush $eng
- gets $eng result
- if { $cbb(debug) } { puts "deleting: $result" }
-
- set cbb(index1) [find_index_from_key [listGetSize] $newkey]
- if { [expr $cbb(index1) < 0] } {
- set cbb(index1) 0
- }
- update_rest $cbb(index1) $newkey
-
- if { $cbb(debug) } {
- puts "-> [string range $undo(data) 12 end]"
- }
-
- update_globals [string range $undo(data) 12 end]
- done_entering
- } else {
- cbbWindow.ok "Nothing to undo :-("
- tkwait window .ok
- }
-
- undoInit
- clear_entry_area
- }
-
-
- # ----------------------------------------------------------------------------
- # $Log: undo.tcl,v $
- # Revision 2.5 1997/04/11 20:26:52 curt
- # $index1, $index2 wrapped up so they are now $cbb(index1), and $cbb(index2)
- #
- # Revision 2.4 1997/01/02 04:38:39 curt
- # Changes over the 1996 holidays:
- # - Converted listbox to text widget. This allows us to do nice
- # things with alternating background colors, highliting, red
- # negative numbers, etc.
- # - Negative transactions are now drawn in red.
- # - Added a Goto <Today> option.
- # - <Home> & <End> were double bound. Now, listbox can be traversed with
- # <Meta-Home> and <Meta-End>
- #
- # Revision 2.3 1996/12/17 14:54:03 curt
- # Updated copyright date.
- #
- # Revision 2.2 1996/12/14 17:15:26 curt
- # The great overhaul of December '96.
- #
- # Revision 2.1 1996/12/08 07:37:50 curt
- # Initial revision.
- #
-
-