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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2004-2005 Novell, Inc.
//
// Authors:
// Dennis Hayes dennish@raytek.com
// Peter Bartok pbartok@novell.com
//
// COMPLETE
using System;
using System.ComponentModel;
using System.Drawing;
using System.Runtime.InteropServices;
namespace System.Windows.Forms {
[DefaultProperty("Checked")]
[DefaultEvent("CheckedChanged")]
public class CheckBox : ButtonBase {
#region Local Variables
internal Appearance appearance;
internal bool auto_check;
internal ContentAlignment check_alignment;
internal CheckState check_state;
internal bool three_state;
#endregion // Local Variables
#region CheckBoxAccessibleObject Subclass
[ComVisible(true)]
public class CheckBoxAccessibleObject : ButtonBaseAccessibleObject {
#region CheckBoxAccessibleObject Local Variables
private CheckBox owner;
#endregion // CheckBoxAccessibleObject Local Variables
#region CheckBoxAccessibleObject Constructors
public CheckBoxAccessibleObject(Control owner) : base(owner) {
this.owner = (CheckBox)owner;
}
#endregion // CheckBoxAccessibleObject Constructors
#region CheckBoxAccessibleObject Properties
public override string DefaultAction {
get {
return "Select";
}
}
public override AccessibleRole Role {
get {
return AccessibleRole.CheckButton;
}
}
public override AccessibleStates State {
get {
AccessibleStates retval;
retval = AccessibleStates.Default;
if (owner.check_state == CheckState.Checked) {
retval |= AccessibleStates.Checked;
}
if (owner.Focused) {
retval |= AccessibleStates.Focused;
}
if (owner.CanFocus) {
retval |= AccessibleStates.Focusable;
}
return retval;
}
}
#endregion // CheckBoxAccessibleObject Properties
}
#endregion // CheckBoxAccessibleObject Sub-class
#region Public Constructors
public CheckBox() {
appearance = Appearance.Normal;
auto_check = true;
check_alignment = ContentAlignment.MiddleLeft;
text_alignment = ContentAlignment.MiddleLeft;
SetStyle(ControlStyles.StandardDoubleClick, false);
}
#endregion // Public Constructors
#region Internal Methods
internal override void Draw (PaintEventArgs pe) {
ThemeEngine.Current.DrawCheckBox (pe.Graphics, this.ClientRectangle, this);
}
internal override void HaveDoubleClick() {
if (DoubleClick != null) DoubleClick(this, EventArgs.Empty);
}
#endregion // Internal Methods
#region Public Instance Properties
[DefaultValue(Appearance.Normal)]
[Localizable(true)]
public Appearance Appearance {
get {
return appearance;
}
set {
if (value != appearance) {
appearance = value;
if (AppearanceChanged != null) {
AppearanceChanged(this, EventArgs.Empty);
}
Redraw();
}
}
}
[DefaultValue(true)]
public bool AutoCheck {
get {
return auto_check;
}
set {
auto_check = value;
}
}
[Bindable(true)]
[Localizable(true)]
[DefaultValue(ContentAlignment.MiddleLeft)]
public ContentAlignment CheckAlign {
get {
return check_alignment;
}
set {
if (value != check_alignment) {
check_alignment = value;
Redraw();
}
}
}
[Bindable(true)]
[RefreshProperties(RefreshProperties.All)]
[DefaultValue(false)]
public bool Checked {
get {
if (check_state != CheckState.Unchecked) {
return true;
}
return false;
}
set {
if (value && (check_state != CheckState.Checked)) {
check_state = CheckState.Checked;
Redraw();
OnCheckedChanged(EventArgs.Empty);
} else if (!value && (check_state != CheckState.Unchecked)) {
check_state = CheckState.Unchecked;
Redraw();
OnCheckedChanged(EventArgs.Empty);
}
}
}
[DefaultValue(CheckState.Unchecked)]
[RefreshProperties(RefreshProperties.All)]
[Bindable(true)]
public CheckState CheckState {
get {
return check_state;
}
set {
if (value != check_state) {
bool was_checked = (check_state != CheckState.Unchecked);
check_state = value;
if (was_checked != (check_state != CheckState.Unchecked)) {
OnCheckedChanged(EventArgs.Empty);
}
OnCheckStateChanged(EventArgs.Empty);
Redraw();
}
}
}
[DefaultValue(ContentAlignment.MiddleLeft)]
[Localizable(true)]
public override ContentAlignment TextAlign {
get {
return text_alignment;
}
set {
if (value != text_alignment) {
text_alignment = value;
Redraw();
}
}
}
[DefaultValue(false)]
public bool ThreeState {
get {
return three_state;
}
set {
three_state = value;
}
}
#endregion // Public Instance Properties
#region Protected Instance Properties
protected override CreateParams CreateParams {
get {
return base.CreateParams;
}
}
protected override Size DefaultSize {
get {
return new Size(104, 24);
}
}
#endregion // Protected Instance Properties
#region Public Instance Methods
public override string ToString() {
return base.ToString() + ", CheckState: " + (int)check_state;
}
#endregion // Public Instance Methods
#region Protected Instance Methods
protected override AccessibleObject CreateAccessibilityInstance() {
AccessibleObject ao;
ao = base.CreateAccessibilityInstance ();
ao.role = AccessibleRole.CheckButton;
return ao;
}
protected virtual void OnAppearanceChanged(EventArgs e) {
if (AppearanceChanged != null) {
AppearanceChanged(this, e);
}
}
protected virtual void OnCheckedChanged(EventArgs e) {
if (CheckedChanged != null) {
CheckedChanged(this, e);
}
}
protected virtual void OnCheckStateChanged(EventArgs e) {
if (CheckStateChanged != null) {
CheckStateChanged(this, e);
}
}
protected override void OnClick(EventArgs e) {
if (auto_check) {
switch(check_state) {
case CheckState.Unchecked: {
if (three_state) {
CheckState = CheckState.Indeterminate;
} else {
CheckState = CheckState.Checked;
}
break;
}
case CheckState.Indeterminate: {
CheckState = CheckState.Checked;
break;
}
case CheckState.Checked: {
CheckState = CheckState.Unchecked;
break;
}
}
}
base.OnClick (e);
}
protected override void OnHandleCreated(EventArgs e) {
base.OnHandleCreated (e);
}
protected override void OnMouseUp(MouseEventArgs mevent) {
base.OnMouseUp (mevent);
}
protected override bool ProcessMnemonic(char charCode) {
if (IsMnemonic(charCode, Text) == true) {
Select();
OnClick(EventArgs.Empty);
return true;
}
return base.ProcessMnemonic(charCode);
}
#endregion // Protected Instance Methods
#region Events
public event EventHandler AppearanceChanged;
public event EventHandler CheckedChanged;
public event EventHandler CheckStateChanged;
#endregion // Events
#region Events
[Browsable(false)]
[EditorBrowsable (EditorBrowsableState.Never)]
public event EventHandler DoubleClick;
#endregion // Events
}
}
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