2007-07-25 Jonathan Pobst <monkey@jpobst.com>
[mono.git] / mcs / class / Managed.Windows.Forms / System.Windows.Forms / LabelEditTextBox.cs
1 // Permission is hereby granted, free of charge, to any person obtaining
2 // a copy of this software and associated documentation files (the
3 // "Software"), to deal in the Software without restriction, including
4 // without limitation the rights to use, copy, modify, merge, publish,
5 // distribute, sublicense, and/or sell copies of the Software, and to
6 // permit persons to whom the Software is furnished to do so, subject to
7 // the following conditions:
8 //
9 // The above copyright notice and this permission notice shall be
10 // included in all copies or substantial portions of the Software.
11 //
12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
19 //
20 // Copyright (c) 2006 Novell, Inc.
21 //
22 // Authors:
23 //      Jackson Harper (jackson@ximian.com)
24 //
25 //
26
27 // This is an internal class that allows us to use a textbox for label editing
28 // in the tree and in listview.  The textbox will make itself invisible when
29 // the user pressed the enter key
30
31 namespace System.Windows.Forms {
32
33         internal class LabelEditTextBox : FixedSizeTextBox {
34
35                 public LabelEditTextBox () : base (true, true)
36                 {
37                 }
38
39                 protected override bool IsInputKey (Keys key_data)
40                 {
41                         if ((key_data & Keys.Alt) == 0) {
42                                 switch (key_data & Keys.KeyCode) {
43                                 case Keys.Enter:
44                                         return true;
45                                 case Keys.Escape:
46                                         return true;
47                                 }
48                         }
49                         return base.IsInputKey (key_data);
50                 }
51
52                 protected override void OnKeyDown (KeyEventArgs e)
53                 {
54                         if (!Visible)
55                                 return;
56
57                         switch (e.KeyCode) {
58                                 case Keys.Return:
59                                         Visible = false;
60                                         e.Handled = true;
61                                         OnEditingFinished (e);
62                                         break;
63                                 case Keys.Escape:
64                                         Visible = false;
65                                         e.Handled = true;
66                                         OnEditingCancelled (e);
67                                         break;
68                         }
69                 }
70
71                 protected override void OnLostFocus (EventArgs e)
72                 {
73                         if (Visible) {
74                                 OnEditingFinished (e);
75                         }
76                 }
77
78                 protected void OnEditingCancelled (EventArgs e)
79                 {
80                         EventHandler eh = (EventHandler)(Events[EditingCancelledEvent]);
81                         if (eh != null)
82                                 eh (this, e);
83                 }
84
85                 protected void OnEditingFinished (EventArgs e)
86                 {
87                         EventHandler eh = (EventHandler)(Events [EditingFinishedEvent]);
88                         if (eh != null)
89                                 eh (this, e);
90                 }
91
92                 static object EditingCancelledEvent = new object ();
93                 public event EventHandler EditingCancelled {
94                         add { Events.AddHandler (EditingCancelledEvent, value); }
95                         remove { Events.RemoveHandler (EditingCancelledEvent, value); }
96                 }
97
98                 static object EditingFinishedEvent = new object ();
99                 public event EventHandler EditingFinished {
100                         add { Events.AddHandler (EditingFinishedEvent, value); }
101                         remove { Events.AddHandler (EditingFinishedEvent, value); }
102                 }
103         }
104 }
105