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:
9 // The above copyright notice and this permission notice shall be
10 // included in all copies or substantial portions of the Software.
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.
20 // Copyright (c) 2004-2005 Novell, Inc.
23 // Dennis Hayes dennish@raytek.com
24 // Peter Bartok pbartok@novell.com
30 using System
.ComponentModel
;
32 using System
.Runtime
.InteropServices
;
34 namespace System
.Windows
.Forms
{
35 [DefaultProperty("Checked")]
36 [DefaultEvent("CheckedChanged")]
37 public class CheckBox
: ButtonBase
{
38 #region Local Variables
39 internal Appearance appearance
;
40 internal bool auto_check
;
41 internal ContentAlignment check_alignment
;
42 internal CheckState check_state
;
43 internal bool three_state
;
44 #endregion // Local Variables
46 #region CheckBoxAccessibleObject Subclass
48 public class CheckBoxAccessibleObject
: ButtonBaseAccessibleObject
{
49 #region CheckBoxAccessibleObject Local Variables
50 private CheckBox owner
;
51 #endregion // CheckBoxAccessibleObject Local Variables
53 #region CheckBoxAccessibleObject Constructors
54 public CheckBoxAccessibleObject(Control owner
) : base(owner
) {
55 this.owner
= (CheckBox
)owner
;
57 #endregion // CheckBoxAccessibleObject Constructors
59 #region CheckBoxAccessibleObject Properties
60 public override string DefaultAction
{
66 public override AccessibleRole Role
{
68 return AccessibleRole
.CheckButton
;
72 public override AccessibleStates State
{
74 AccessibleStates retval
;
76 retval
= AccessibleStates
.Default
;
78 if (owner
.check_state
== CheckState
.Checked
) {
79 retval
|= AccessibleStates
.Checked
;
83 retval
|= AccessibleStates
.Focused
;
87 retval
|= AccessibleStates
.Focusable
;
93 #endregion // CheckBoxAccessibleObject Properties
95 #endregion // CheckBoxAccessibleObject Sub-class
97 #region Public Constructors
99 appearance
= Appearance
.Normal
;
101 check_alignment
= ContentAlignment
.MiddleLeft
;
102 text_alignment
= ContentAlignment
.MiddleLeft
;
103 SetStyle(ControlStyles
.StandardDoubleClick
, false);
105 #endregion // Public Constructors
107 #region Internal Methods
108 internal override void Draw (PaintEventArgs pe
) {
109 ThemeEngine
.Current
.DrawCheckBox (pe
.Graphics
, this.ClientRectangle
, this);
112 internal override void HaveDoubleClick() {
113 if (DoubleClick
!= null) DoubleClick(this, EventArgs
.Empty
);
115 #endregion // Internal Methods
117 #region Public Instance Properties
118 [DefaultValue(Appearance
.Normal
)]
120 public Appearance Appearance
{
126 if (value != appearance
) {
128 OnAppearanceChanged (EventArgs
.Empty
);
135 public bool AutoCheck
{
147 [DefaultValue(ContentAlignment
.MiddleLeft
)]
148 public ContentAlignment CheckAlign
{
150 return check_alignment
;
154 if (value != check_alignment
) {
155 check_alignment
= value;
163 [RefreshProperties(RefreshProperties
.All
)]
164 [DefaultValue(false)]
165 public bool Checked
{
167 if (check_state
!= CheckState
.Unchecked
) {
174 if (value && (check_state
!= CheckState
.Checked
)) {
175 check_state
= CheckState
.Checked
;
177 OnCheckedChanged(EventArgs
.Empty
);
178 } else if (!value && (check_state
!= CheckState
.Unchecked
)) {
179 check_state
= CheckState
.Unchecked
;
181 OnCheckedChanged(EventArgs
.Empty
);
186 [DefaultValue(CheckState
.Unchecked
)]
187 [RefreshProperties(RefreshProperties
.All
)]
189 public CheckState CheckState
{
195 if (value != check_state
) {
196 bool was_checked
= (check_state
!= CheckState
.Unchecked
);
200 if (was_checked
!= (check_state
!= CheckState
.Unchecked
)) {
201 OnCheckedChanged(EventArgs
.Empty
);
204 OnCheckStateChanged(EventArgs
.Empty
);
210 [DefaultValue(ContentAlignment
.MiddleLeft
)]
212 public override ContentAlignment TextAlign
{
214 return text_alignment
;
218 if (value != text_alignment
) {
219 text_alignment
= value;
226 [DefaultValue(false)]
227 public bool ThreeState
{
236 #endregion // Public Instance Properties
238 #region Protected Instance Properties
239 protected override CreateParams CreateParams
{
241 return base.CreateParams
;
245 protected override Size DefaultSize
{
247 return new Size(104, 24);
250 #endregion // Protected Instance Properties
252 #region Public Instance Methods
253 public override string ToString() {
254 return base.ToString() + ", CheckState: " + (int)check_state
;
256 #endregion // Public Instance Methods
258 #region Protected Instance Methods
259 protected override AccessibleObject
CreateAccessibilityInstance() {
262 ao
= base.CreateAccessibilityInstance ();
263 ao
.role
= AccessibleRole
.CheckButton
;
268 protected virtual void OnAppearanceChanged(EventArgs e
) {
269 EventHandler eh
= (EventHandler
)(Events
[AppearanceChangedEvent
]);
274 protected virtual void OnCheckedChanged(EventArgs e
) {
275 EventHandler eh
= (EventHandler
)(Events
[CheckedChangedEvent
]);
280 protected virtual void OnCheckStateChanged(EventArgs e
) {
281 EventHandler eh
= (EventHandler
)(Events
[CheckStateChangedEvent
]);
286 protected override void OnClick(EventArgs e
) {
288 switch(check_state
) {
289 case CheckState
.Unchecked
: {
291 CheckState
= CheckState
.Indeterminate
;
293 CheckState
= CheckState
.Checked
;
298 case CheckState
.Indeterminate
: {
299 CheckState
= CheckState
.Checked
;
303 case CheckState
.Checked
: {
304 CheckState
= CheckState
.Unchecked
;
313 protected override void OnHandleCreated(EventArgs e
) {
314 base.OnHandleCreated (e
);
317 protected override void OnMouseUp(MouseEventArgs mevent
) {
318 base.OnMouseUp (mevent
);
321 protected override bool ProcessMnemonic(char charCode
) {
322 if (IsMnemonic(charCode
, Text
) == true) {
324 OnClick(EventArgs
.Empty
);
328 return base.ProcessMnemonic(charCode
);
330 #endregion // Protected Instance Methods
333 static object AppearanceChangedEvent
= new object ();
334 static object CheckedChangedEvent
= new object ();
335 static object CheckStateChangedEvent
= new object ();
337 public event EventHandler AppearanceChanged
{
338 add { Events.AddHandler (AppearanceChangedEvent, value); }
339 remove { Events.RemoveHandler (AppearanceChangedEvent, value); }
342 public event EventHandler CheckedChanged
{
343 add { Events.AddHandler (CheckedChangedEvent, value); }
344 remove { Events.RemoveHandler (CheckedChangedEvent, value); }
347 public event EventHandler CheckStateChanged
{
348 add { Events.AddHandler (CheckStateChangedEvent, value); }
349 remove { Events.RemoveHandler (CheckStateChangedEvent, value); }
354 // XXX have a look at this and determine if it
355 // manipulates base.DoubleClick, and see if
356 // HaveDoubleClick can just call OnDoubleClick.
358 [EditorBrowsable (EditorBrowsableState
.Never
)]
359 public new event EventHandler DoubleClick
;