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 UndoNodeReparent : UndoItem {
25
26  private Node _node;
27  private int  _first_index;
28  private int  _last_index;
29
30  /* Default constructor */
31  public UndoNodeReparent( Node node, int first_index, int last_index ) {
32    base( _( "reparent children" ) );
33    _node        = node;
34    _first_index = first_index;
35    _last_index  = last_index;
36  }
37
38  /* Performs an undo operation for this data */
39  public override void undo( DrawArea da ) {
40    da.animator.add_nodes( da.get_nodes(), "undo_make_children_siblings" );
41    for( int i=(_last_index - 1); i>=_first_index; i-- ) {
42      var child = _node.parent.children().index( i );
43      child.detach( child.side );
44      child.attach( _node, 0, null );
45    }
46    da.animator.animate();
47    da.auto_save();
48  }
49
50  /* Performs a redo operation */
51  public override void redo( DrawArea da ) {
52    _node.make_children_siblings( _node.parent, false );
53    da.auto_save();
54  }
55
56}
57