1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
using System;
using Xwt.Backends;
using System.ComponentModel;
using Xwt.Drawing;
namespace Xwt
{
public class Expander: Widget
{
EventHandler expandChanged;
Xwt.Widget child;
protected new class WidgetBackendHost: Widget.WidgetBackendHost, IExpandEventSink
{
public void ExpandChanged ()
{
((Expander)Parent).OnExpandChanged (EventArgs.Empty);
}
}
protected override BackendHost CreateBackendHost ()
{
return new WidgetBackendHost ();
}
IExpanderBackend Backend {
get { return (IExpanderBackend)BackendHost.Backend; }
}
public Expander ()
{
}
public string Label {
get {
return Backend.Label;
}
set {
Backend.Label = value;
}
}
public bool Expanded {
get {
return Backend.Expanded;
}
set {
Backend.Expanded = value;
}
}
public new Widget Content {
get { return child; }
set {
if (child != null)
UnregisterChild (child);
child = value;
if (child != null)
RegisterChild (child);
Backend.SetContent ((IWidgetBackend)GetBackend (child));
OnPreferredSizeChanged ();
}
}
protected void OnExpandChanged (EventArgs args)
{
if (expandChanged != null)
expandChanged (this, args);
}
public event EventHandler ExpandChanged {
add {
BackendHost.OnBeforeEventAdd (ExpandEvent.ExpandChanged, expandChanged);
expandChanged += value;
}
remove {
expandChanged -= value;
BackendHost.OnAfterEventRemove (ExpandEvent.ExpandChanged, expandChanged);
}
}
}
}
|