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 UndoConnectedNode : UndoItem {
25
26  private Node       _node;
27  private Connection _conn;
28  private int        _index;
29
30  public UndoConnectedNode( Node node, int index, Connection conn ) {
31    base( _( "connected node" ) );
32    _node  = node;
33    _conn  = conn;
34    _index = index;
35  }
36
37  public override void undo( DrawArea da ) {
38    da.remove_root( _index );
39    da.get_connections().remove_connection( _conn, false );
40    if( da.get_current_node() == _node ) {
41      da.set_current_node( null );
42    }
43    da.queue_draw();
44    da.auto_save();
45  }
46
47  public override void redo( DrawArea da ) {
48    da.get_nodes().insert_val( _index, _node );
49    da.get_connections().add_connection( _conn );
50    da.set_current_node( _node );
51    da.queue_draw();
52    da.auto_save();
53  }
54
55}
56