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 if (AppearanceChanged != null) {
129 AppearanceChanged(this, EventArgs.Empty);
137 public bool AutoCheck {
149 [DefaultValue(ContentAlignment.MiddleLeft)]
150 public ContentAlignment CheckAlign {
152 return check_alignment;
156 if (value != check_alignment) {
157 check_alignment = value;
165 [RefreshProperties(RefreshProperties.All)]
166 [DefaultValue(false)]
167 public bool Checked {
169 if (check_state != CheckState.Unchecked) {
176 if (value && (check_state != CheckState.Checked)) {
177 check_state = CheckState.Checked;
179 OnCheckedChanged(EventArgs.Empty);
180 } else if (!value && (check_state != CheckState.Unchecked)) {
181 check_state = CheckState.Unchecked;
183 OnCheckedChanged(EventArgs.Empty);
188 [DefaultValue(CheckState.Unchecked)]
189 [RefreshProperties(RefreshProperties.All)]
191 public CheckState CheckState {
197 if (value != check_state) {
198 bool was_checked = (check_state != CheckState.Unchecked);
202 if (was_checked != (check_state != CheckState.Unchecked)) {
203 OnCheckedChanged(EventArgs.Empty);
206 OnCheckStateChanged(EventArgs.Empty);
212 [DefaultValue(ContentAlignment.MiddleLeft)]
214 public override ContentAlignment TextAlign {
216 return text_alignment;
220 if (value != text_alignment) {
221 text_alignment = value;
228 [DefaultValue(false)]
229 public bool ThreeState {
238 #endregion // Public Instance Properties
240 #region Protected Instance Properties
241 protected override CreateParams CreateParams {
243 return base.CreateParams;
247 protected override Size DefaultSize {
249 return new Size(104, 24);
252 #endregion // Protected Instance Properties
254 #region Public Instance Methods
255 public override string ToString() {
256 return base.ToString() + ", CheckState: " + (int)check_state;
258 #endregion // Public Instance Methods
260 #region Protected Instance Methods
261 protected override AccessibleObject CreateAccessibilityInstance() {
264 ao = base.CreateAccessibilityInstance ();
265 ao.role = AccessibleRole.CheckButton;
270 protected virtual void OnAppearanceChanged(EventArgs e) {
271 if (AppearanceChanged != null) {
272 AppearanceChanged(this, e);
276 protected virtual void OnCheckedChanged(EventArgs e) {
277 if (CheckedChanged != null) {
278 CheckedChanged(this, e);
282 protected virtual void OnCheckStateChanged(EventArgs e) {
283 if (CheckStateChanged != null) {
284 CheckStateChanged(this, e);
288 protected override void OnClick(EventArgs e) {
290 switch(check_state) {
291 case CheckState.Unchecked: {
293 CheckState = CheckState.Indeterminate;
295 CheckState = CheckState.Checked;
300 case CheckState.Indeterminate: {
301 CheckState = CheckState.Checked;
305 case CheckState.Checked: {
306 CheckState = CheckState.Unchecked;
315 protected override void OnHandleCreated(EventArgs e) {
316 base.OnHandleCreated (e);
319 protected override void OnMouseUp(MouseEventArgs mevent) {
320 base.OnMouseUp (mevent);
323 protected override bool ProcessMnemonic(char charCode) {
324 if (IsMnemonic(charCode, Text) == true) {
326 OnClick(EventArgs.Empty);
330 return base.ProcessMnemonic(charCode);
332 #endregion // Protected Instance Methods
335 public event EventHandler AppearanceChanged;
336 public event EventHandler CheckedChanged;
337 public event EventHandler CheckStateChanged;
342 [EditorBrowsable (EditorBrowsableState.Never)]
343 public event EventHandler DoubleClick;