1/*
2* Copyright (c) 2018 (https://github.com/phase1geo/Minder)
3*
4* This program is free software; you can redistribute it and/or
5* modify it under the terms of the GNU General Public
6* License as published by the Free Software Foundation; either
7* version 2 of the License, or (at your option) any later version.
8*
9* This program is distributed in the hope that it will be useful,
10* but WITHOUT ANY WARRANTY; without even the implied warranty of
11* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12* General Public License for more details.
13*
14* You should have received a copy of the GNU General Public
15* License along with this program; if not, write to the
16* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17* Boston, MA 02110-1301 USA
18*
19* Authored by: Trevor Williams <phase1geo@gmail.com>
20*/
21
22using Gtk;
23
24public class UndoConnectionDelete : UndoItem {
25
26  Connection _connection;
27
28  /* Constructor for deleting a connection */
29  public UndoConnectionDelete( Connection connection ) {
30    base( _( "delete connection" ) );
31    _connection = connection;
32  }
33
34  /* Undoes a connection change */
35  public override void undo( DrawArea da ) {
36    da.get_connections().add_connection( _connection );
37    da.set_current_connection( _connection );
38    da.queue_draw();
39    da.auto_save();
40  }
41
42  /* Redoes a connection change */
43  public override void redo( DrawArea da ) {
44    da.get_connections().remove_connection( _connection, false );
45    da.set_current_connection( null );
46    da.queue_draw();
47    da.auto_save();
48  }
49
50}
51