1/*
2* Copyright (c) 2020 (https://github.com/phase1geo/Outliner)
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
22public class UndoTextClearTags : UndoTextItem {
23
24  public int                start { private set; get; }
25  public int                end   { private set; get; }
26  public Array<UndoTagInfo> tags  { private set; get; }
27
28  /* Default constructor */
29  public UndoTextClearTags( int start, int end, Array<UndoTagInfo> tags, int cursor ) {
30    base( _( "clear formatting" ), UndoTextOp.TAGCLEAR, cursor, cursor );
31    this.start = start;
32    this.end   = end;
33    this.tags  = tags;
34  }
35
36  /* Causes the stored item to be put into the before state */
37  public override void undo_text( DrawArea da, CanvasText ct ) {
38    ct.text.apply_tags( tags, start );
39    da.queue_draw();
40  }
41
42  /* Causes the stored item to be put into the after state */
43  public override void redo_text( DrawArea da, CanvasText ct ) {
44    ct.text.remove_all_tags( start, end );
45    da.queue_draw();
46  }
47
48  /* Merges the given item with the current one */
49  public override bool merge( CanvasText ct, UndoTextItem item ) {
50    return( false );
51  }
52
53}
54