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 UndoTextTagRemove : UndoTextItem {
23
24  public int       start  { private set; get; }
25  public int       end    { private set; get; }
26  public FormatTag tag    { private set; get; }
27  public string?   extra  { private set; get; }
28  public bool      parsed { private set; get; }
29
30  /* Default constructor */
31  public UndoTextTagRemove( int start, int end, FormatTag tag, string? extra, bool parsed, int cursor ) {
32    base( _( "format tag remove" ), UndoTextOp.TAGDEL, cursor, cursor );
33    this.start  = start;
34    this.end    = end;
35    this.tag    = tag;
36    this.extra  = extra;
37    this.parsed = parsed;
38  }
39
40  /* Causes the stored item to be put into the before state */
41  public override void undo_text( DrawArea da, CanvasText ct ) {
42    ct.text.add_tag( tag, start, end, parsed, extra );
43    ct.set_cursor_only( start_cursor );
44    da.queue_draw();
45  }
46
47  /* Causes the stored item to be put into the after state */
48  public override void redo_text( DrawArea da, CanvasText ct ) {
49    ct.text.remove_tag( tag, start, end );
50    ct.set_cursor_only( end_cursor );
51    da.queue_draw();
52  }
53
54  /* Merges the given item with the current one */
55  public override bool merge( CanvasText ct, UndoTextItem item ) {
56    return( false );
57  }
58
59}
60