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//------------------------------------------------------------------------------
// <copyright file="ToolStripComboBox.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Windows.Forms {
using System;
using System.Drawing;
using System.Windows.Forms;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing.Design;
using System.Collections.Specialized;
using System.Drawing.Drawing2D;
using System.Windows.Forms.Design;
using System.Security;
using System.Security.Permissions;
using System.Runtime.InteropServices;
using System.Windows.Forms.Internal;
using System.Globalization;
/// <include file='doc\ToolStripComboBox.uex' path='docs/doc[@for="ToolStripComboBox"]/*' />
/// <devdoc/>
[ToolStripItemDesignerAvailability(ToolStripItemDesignerAvailability.MenuStrip | ToolStripItemDesignerAvailability.ToolStrip | ToolStripItemDesignerAvailability.ContextMenuStrip)]
[DefaultProperty("Items")]
public class ToolStripComboBox : ToolStripControlHost {
internal static readonly object EventDropDown = new object();
internal static readonly object EventDropDownClosed = new object();
internal static readonly object EventDropDownStyleChanged = new object();
internal static readonly object EventSelectedIndexChanged = new object();
internal static readonly object EventSelectionChangeCommitted = new object();
internal static readonly object EventTextUpdate = new object();
private static readonly Padding dropDownPadding = new Padding(2);
private static readonly Padding padding = new Padding(1, 0, 1, 0);
private Padding scaledDropDownPadding = dropDownPadding;
private Padding scaledPadding = padding;
/// <include file='doc\ToolStripComboBox.uex' path='docs/doc[@for="ToolStripComboBox.ToolStripComboBox"]/*' />
public ToolStripComboBox() : base(CreateControlInstance()) {
ToolStripComboBoxControl combo = Control as ToolStripComboBoxControl;
combo.Owner = this;
if (DpiHelper.EnableToolStripHighDpiImprovements) {
scaledPadding = DpiHelper.LogicalToDeviceUnits(padding);
scaledDropDownPadding = DpiHelper.LogicalToDeviceUnits(dropDownPadding);
}
}
public ToolStripComboBox(string name) : this() {
this.Name = name;
}
/// <include file='doc\ToolStripComboBox.uex' path='docs/doc[@for="ToolStripComboBox.ToolStripComboBox1"]/*' />
[EditorBrowsable(EditorBrowsableState.Never)]
public ToolStripComboBox(Control c) : base(c) {
throw new NotSupportedException(SR.GetString(SR.ToolStripMustSupplyItsOwnComboBox));
}
/// <summary>
/// Constructs the new instance of the accessibility object for this ToolStripComboBox ToolStrip item.
/// </summary>
/// <returns>
/// The new instance of the accessibility object for this ToolStripComboBox ToolStrip item
/// </returns>
protected override AccessibleObject CreateAccessibilityInstance() {
if (AccessibilityImprovements.Level3) {
return new ToolStripComboBoxAccessibleObject(this);
}
return base.CreateAccessibilityInstance();
}
[System.Runtime.InteropServices.ComVisible(true)]
internal class ToolStripComboBoxAccessibleObject : ToolStripItemAccessibleObject {
private ToolStripComboBox ownerItem = null;
public ToolStripComboBoxAccessibleObject(ToolStripComboBox ownerItem) : base(ownerItem) {
this.ownerItem = ownerItem;
}
public override string DefaultAction {
get {
// Note: empty value is provided due to this Accessible object
// represents the control container but not the contained ComboBox
// control itself.
return string.Empty;
}
}
public override void DoDefaultAction() {
// Do nothing.
}
public override AccessibleRole Role {
get {
AccessibleRole role = Owner.AccessibleRole;
if (role != AccessibleRole.Default) {
return role;
}
return AccessibleRole.ComboBox;
}
}
internal override UnsafeNativeMethods.IRawElementProviderFragment FragmentNavigate(UnsafeNativeMethods.NavigateDirection direction) {
if (direction == UnsafeNativeMethods.NavigateDirection.FirstChild ||
direction == UnsafeNativeMethods.NavigateDirection.LastChild) {
return this.ownerItem.ComboBox.AccessibilityObject;
}
// Handle Parent and other directions in base ToolStripItem.FragmentNavigate() method.
return base.FragmentNavigate(direction);
}
internal override UnsafeNativeMethods.IRawElementProviderFragmentRoot FragmentRoot {
get {
return this.ownerItem.RootToolStrip.AccessibilityObject;
}
}
}
private static Control CreateControlInstance() {
ComboBox comboBox = new ToolStripComboBoxControl();
comboBox.FlatStyle = FlatStyle.Popup;
comboBox.Font = ToolStripManager.DefaultFont;
return comboBox;
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.AutoCompleteCustomSource"]/*' />
[
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
Localizable(true),
SRDescription(SR.ComboBoxAutoCompleteCustomSourceDescr),
Editor("System.Windows.Forms.Design.ListControlStringCollectionEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
Browsable(true), EditorBrowsable(EditorBrowsableState.Always)
]
public System.Windows.Forms.AutoCompleteStringCollection AutoCompleteCustomSource {
get { return ComboBox.AutoCompleteCustomSource; }
set { ComboBox.AutoCompleteCustomSource = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.AutoCompleteMode"]/*' />
[
DefaultValue(AutoCompleteMode.None),
SRDescription(SR.ComboBoxAutoCompleteModeDescr),
Browsable(true), EditorBrowsable(EditorBrowsableState.Always)
]
public AutoCompleteMode AutoCompleteMode {
get { return ComboBox.AutoCompleteMode; }
set { ComboBox.AutoCompleteMode = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.AutoCompleteSource"]/*' />
[
DefaultValue(AutoCompleteSource.None),
SRDescription(SR.ComboBoxAutoCompleteSourceDescr),
Browsable(true), EditorBrowsable(EditorBrowsableState.Always)
]
public AutoCompleteSource AutoCompleteSource {
get { return ComboBox.AutoCompleteSource; }
set { ComboBox.AutoCompleteSource = value;}
}
[
Browsable(false),
EditorBrowsable(EditorBrowsableState.Never),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
]
public override Image BackgroundImage {
get {
return base.BackgroundImage;
}
set {
base.BackgroundImage = value;
}
}
[
Browsable(false),
EditorBrowsable(EditorBrowsableState.Never),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
]
public override ImageLayout BackgroundImageLayout {
get {
return base.BackgroundImageLayout;
}
set {
base.BackgroundImageLayout = value;
}
}
/// <include file='doc\ToolStripComboBox.uex' path='docs/doc[@for="ToolStripComboBox.ComboBox"]/*' />
[Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
public ComboBox ComboBox {
get{
return Control as ComboBox;
}
}
/// <include file='doc\ToolStripComboBox.uex' path='docs/doc[@for="ToolStripComboBox.DefaultSize"]/*' />
protected override Size DefaultSize {
get {
return new Size(100,22);
}
}
/// <include file='doc\ToolStripComboBox.uex' path='docs/doc[@for="ToolStripComboBox.DefaultMargin"]/*' />
/// <devdoc>
/// Deriving classes can override this to configure a default size for their control.
/// This is more efficient than setting the size in the control's constructor.
/// </devdoc>
protected internal override Padding DefaultMargin {
get {
if (IsOnDropDown) {
return scaledDropDownPadding;
}
else {
return scaledPadding;
}
}
}
[
Browsable(false),
EditorBrowsable(EditorBrowsableState.Never)
]
public new event EventHandler DoubleClick {
add {
base.DoubleClick+=value;
}
remove {
base.DoubleClick -= value;
}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.DropDown"]/*' />
[SRCategory(SR.CatBehavior), SRDescription(SR.ComboBoxOnDropDownDescr)]
public event EventHandler DropDown {
add {
Events.AddHandler(EventDropDown, value);
}
remove {
Events.RemoveHandler(EventDropDown, value);
}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.DropDown"]/*' />
[SRCategory(SR.CatBehavior), SRDescription(SR.ComboBoxOnDropDownClosedDescr)]
public event EventHandler DropDownClosed {
add {
Events.AddHandler(EventDropDownClosed, value);
}
remove {
Events.RemoveHandler(EventDropDownClosed, value);
}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.DropDownStyleChanged"]/*' />
[SRCategory(SR.CatBehavior), SRDescription(SR.ComboBoxDropDownStyleChangedDescr)]
public event EventHandler DropDownStyleChanged {
add {
Events.AddHandler(EventDropDownStyleChanged, value);
}
remove {
Events.RemoveHandler(EventDropDownStyleChanged, value);
}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.DropDownHeight"]/*' />
[
SRCategory(SR.CatBehavior),
SRDescription(SR.ComboBoxDropDownHeightDescr),
Browsable(true), EditorBrowsable(EditorBrowsableState.Always),
DefaultValue(106)
]
public int DropDownHeight {
get { return ComboBox.DropDownHeight; }
set { ComboBox.DropDownHeight = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.DropDownStyle"]/*' />
[
SRCategory(SR.CatAppearance),
DefaultValue(ComboBoxStyle.DropDown),
SRDescription(SR.ComboBoxStyleDescr),
RefreshPropertiesAttribute(RefreshProperties.Repaint)
]
public ComboBoxStyle DropDownStyle {
get { return ComboBox.DropDownStyle; }
set { ComboBox.DropDownStyle = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.DropDownWidth"]/*' />
[
SRCategory(SR.CatBehavior),
SRDescription(SR.ComboBoxDropDownWidthDescr)
]
public int DropDownWidth {
get { return ComboBox.DropDownWidth; }
set { ComboBox.DropDownWidth = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.DroppedDown"]/*' />
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
SRDescription(SR.ComboBoxDroppedDownDescr)
]
public bool DroppedDown {
get { return ComboBox.DroppedDown; }
set { ComboBox.DroppedDown = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.FlatStyle"]/*' />
[
SRCategory(SR.CatAppearance),
DefaultValue(FlatStyle.Popup),
Localizable(true),
SRDescription(SR.ComboBoxFlatStyleDescr)
]
public FlatStyle FlatStyle {
get { return ComboBox.FlatStyle; }
set { ComboBox.FlatStyle = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.IntegralHeight"]/*' />
[
SRCategory(SR.CatBehavior),
DefaultValue(true),
Localizable(true),
SRDescription(SR.ComboBoxIntegralHeightDescr)
]
public bool IntegralHeight {
get { return ComboBox.IntegralHeight; }
set { ComboBox.IntegralHeight = value;}
}
/// <include file='doc\ToolStripComboBox.uex' path='docs/doc[@for="ToolStripComboBox.Items"]/*' />
/// <devdoc>
/// Collection of the items contained in this ComboBox.
/// </devdoc>
[
SRCategory(SR.CatData),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
Localizable(true),
SRDescription(SR.ComboBoxItemsDescr),
Editor("System.Windows.Forms.Design.ListControlStringCollectionEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor))
]
public ComboBox.ObjectCollection Items {
get{
return ComboBox.Items;
}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.MaxDropDownItems"]/*' />
[
SRCategory(SR.CatBehavior),
DefaultValue(8),
Localizable(true),
SRDescription(SR.ComboBoxMaxDropDownItemsDescr)
]
public int MaxDropDownItems {
get { return ComboBox.MaxDropDownItems; }
set { ComboBox.MaxDropDownItems = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.MaxLength"]/*' />
[
SRCategory(SR.CatBehavior),
DefaultValue(0),
Localizable(true),
SRDescription(SR.ComboBoxMaxLengthDescr)
]
public int MaxLength {
get { return ComboBox.MaxLength; }
set { ComboBox.MaxLength = value; }
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.SelectedIndex"]/*' />
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
SRDescription(SR.ComboBoxSelectedIndexDescr)
]
public int SelectedIndex {
get { return ComboBox.SelectedIndex; }
set { ComboBox.SelectedIndex = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.SelectedIndexChanged"]/*' />
[SRCategory(SR.CatBehavior), SRDescription(SR.selectedIndexChangedEventDescr)]
public event EventHandler SelectedIndexChanged {
add {
Events.AddHandler(EventSelectedIndexChanged, value);
}
remove {
Events.RemoveHandler(EventSelectedIndexChanged, value);
}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.SelectedItem"]/*' />
[
Browsable(false),
Bindable(true),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
SRDescription(SR.ComboBoxSelectedItemDescr)
]
public object SelectedItem {
get { return ComboBox.SelectedItem; }
set { ComboBox.SelectedItem = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.SelectedText"]/*' />
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
SRDescription(SR.ComboBoxSelectedTextDescr)
]
public string SelectedText {
get { return ComboBox.SelectedText; }
set { ComboBox.SelectedText = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.SelectionLength"]/*' />
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
SRDescription(SR.ComboBoxSelectionLengthDescr)
]
public int SelectionLength {
get { return ComboBox.SelectionLength; }
set { ComboBox.SelectionLength = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.SelectionStart"]/*' />
[
Browsable(false),
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden),
SRDescription(SR.ComboBoxSelectionStartDescr)
]
public int SelectionStart {
get { return ComboBox.SelectionStart; }
set { ComboBox.SelectionStart = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.Sorted"]/*' />
[
SRCategory(SR.CatBehavior),
DefaultValue(false),
SRDescription(SR.ComboBoxSortedDescr)
]
public bool Sorted {
get { return ComboBox.Sorted; }
set {ComboBox.Sorted = value;}
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.TextUpdate"]/*' />
[SRCategory(SR.CatBehavior), SRDescription(SR.ComboBoxOnTextUpdateDescr)]
public event EventHandler TextUpdate {
add {
Events.AddHandler(EventTextUpdate, value);
}
remove {
Events.RemoveHandler(EventTextUpdate, value);
}
}
#region WrappedMethods
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.BeginUpdate"]/*' />
public void BeginUpdate() { ComboBox.BeginUpdate(); }
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.EndUpdate"]/*' />
public void EndUpdate() { ComboBox.EndUpdate(); }
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.FindString"]/*' />
public int FindString(string s) { return ComboBox.FindString(s); }
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.FindString1"]/*' />
public int FindString(string s, int startIndex) { return ComboBox.FindString(s, startIndex); }
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.FindStringExact"]/*' />
public int FindStringExact(string s) { return ComboBox.FindStringExact(s); }
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.FindStringExact1"]/*' />
public int FindStringExact(string s, int startIndex) { return ComboBox.FindStringExact(s, startIndex); }
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.GetItemHeight"]/*' />
public int GetItemHeight(int index) { return ComboBox.GetItemHeight(index); }
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.Select"]/*' />
public void Select(int start, int length) { ComboBox.Select(start, length); }
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.SelectAll"]/*' />
public void SelectAll() { ComboBox.SelectAll(); }
#endregion WrappedMethods
/// <include file='doc\ToolStripComboBox.uex' path='docs/doc[@for="ToolStripComboBox.GetPreferredSize"]/*' />
public override Size GetPreferredSize(Size constrainingSize) {
//
Size preferredSize = base.GetPreferredSize(constrainingSize);
preferredSize.Width = Math.Max(preferredSize.Width, 75);
return preferredSize;
}
private void HandleDropDown(object sender, System.EventArgs e) {
OnDropDown(e);
}
private void HandleDropDownClosed(object sender, System.EventArgs e) {
OnDropDownClosed(e);
}
private void HandleDropDownStyleChanged(object sender, System.EventArgs e) {
OnDropDownStyleChanged(e);
}
private void HandleSelectedIndexChanged(object sender, System.EventArgs e) {
OnSelectedIndexChanged(e);
}
private void HandleSelectionChangeCommitted(object sender, System.EventArgs e) {
OnSelectionChangeCommitted(e);
}
private void HandleTextUpdate(object sender, System.EventArgs e) {
OnTextUpdate(e);
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.OnDropDown"]/*' />
protected virtual void OnDropDown(EventArgs e) {
if (ParentInternal != null) {
// PERF, SECREVIEW: dont call Application.RemoveMessageFilter as this could
// get called a lot and we want to have to assert AWP.
Application.ThreadContext.FromCurrent().RemoveMessageFilter(ParentInternal.RestoreFocusFilter);
ToolStripManager.ModalMenuFilter.SuspendMenuMode();
}
RaiseEvent(EventDropDown, e);
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.OnDropDown"]/*' />
protected virtual void OnDropDownClosed(EventArgs e) {
if (ParentInternal != null) {
// PERF, SECREVIEW: dont call Application.RemoveMessageFilter as this could
// get called a lot and we want to have to assert AWP.
Application.ThreadContext.FromCurrent().RemoveMessageFilter(ParentInternal.RestoreFocusFilter);
ToolStripManager.ModalMenuFilter.ResumeMenuMode();
}
RaiseEvent(EventDropDownClosed, e);
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.OnDropDownStyleChanged"]/*' />
protected virtual void OnDropDownStyleChanged(EventArgs e) {
RaiseEvent(EventDropDownStyleChanged, e);
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.OnSelectedIndexChanged"]/*' />
protected virtual void OnSelectedIndexChanged(EventArgs e) {
RaiseEvent(EventSelectedIndexChanged, e);
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.OnSelectionChangeCommitted"]/*' />
protected virtual void OnSelectionChangeCommitted(EventArgs e) {
RaiseEvent(EventSelectionChangeCommitted, e);
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.OnTextUpdate"]/*' />
protected virtual void OnTextUpdate(EventArgs e) {
RaiseEvent(EventTextUpdate, e);
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.OnSubscribeControlEvents"]/*' />
protected override void OnSubscribeControlEvents(Control control) {
ComboBox comboBox = control as ComboBox;
if (comboBox != null) {
// Please keep this alphabetized and in sync with Unsubscribe
//
comboBox.DropDown += new EventHandler(HandleDropDown);
comboBox.DropDownClosed += new EventHandler(HandleDropDownClosed);
comboBox.DropDownStyleChanged += new EventHandler(HandleDropDownStyleChanged);
comboBox.SelectedIndexChanged += new EventHandler(HandleSelectedIndexChanged);
comboBox.SelectionChangeCommitted += new EventHandler(HandleSelectionChangeCommitted);
comboBox.TextUpdate += new EventHandler(HandleTextUpdate);
}
base.OnSubscribeControlEvents(control);
}
/// <include file='doc\WinBarComboBox.uex' path='docs/doc[@for="ToolStripComboBox.OnUnsubscribeControlEvents"]/*' />
protected override void OnUnsubscribeControlEvents(Control control) {
ComboBox comboBox = control as ComboBox;
if (comboBox != null) {
// Please keep this alphabetized and in sync with Unsubscribe
//
comboBox.DropDown -= new EventHandler(HandleDropDown);
comboBox.DropDownClosed -= new EventHandler(HandleDropDownClosed);
comboBox.DropDownStyleChanged -= new EventHandler(HandleDropDownStyleChanged);
comboBox.SelectedIndexChanged -= new EventHandler(HandleSelectedIndexChanged);
comboBox.SelectionChangeCommitted -= new EventHandler(HandleSelectionChangeCommitted);
comboBox.TextUpdate -= new EventHandler(HandleTextUpdate);
}
base.OnUnsubscribeControlEvents(control);
}
private bool ShouldSerializeDropDownWidth() {
return ComboBox.ShouldSerializeDropDownWidth();
}
internal override bool ShouldSerializeFont() {
return !object.Equals(this.Font, ToolStripManager.DefaultFont);
}
public override string ToString() {
return base.ToString() + ", Items.Count: " + Items.Count.ToString(CultureInfo.CurrentCulture);
}
internal class ToolStripComboBoxControl : ComboBox {
private ToolStripComboBox owner = null;
public ToolStripComboBoxControl() {
this.FlatStyle = FlatStyle.Popup;
SetStyle(ControlStyles.ResizeRedraw | ControlStyles.OptimizedDoubleBuffer, true);
}
public ToolStripComboBox Owner {
get { return owner; }
set { owner = value; }
}
private ProfessionalColorTable ColorTable {
get {
if (Owner != null) {
ToolStripProfessionalRenderer renderer = Owner.Renderer as ToolStripProfessionalRenderer;
if (renderer != null) {
return renderer.ColorTable;
}
}
return ProfessionalColors.ColorTable;
}
}
/// <summary>
/// Constructs the new instance of the accessibility object for this ToolStripComboBoxControl.
/// </summary>
/// <returns>
/// The new instance of the accessibility object for this ToolStripComboBoxControl item
/// </returns>
protected override AccessibleObject CreateAccessibilityInstance() {
if (AccessibilityImprovements.Level3) {
return new ToolStripComboBoxControlAccessibleObject(this);
}
return base.CreateAccessibilityInstance();
}
internal override FlatComboAdapter CreateFlatComboAdapterInstance() {
return new ToolStripComboBoxFlatComboAdapter(this);
}
internal class ToolStripComboBoxFlatComboAdapter : FlatComboAdapter {
public ToolStripComboBoxFlatComboAdapter(ComboBox comboBox) : base(comboBox, /*smallButton=*/true) {
}
private static bool UseBaseAdapter(ComboBox comboBox) {
ToolStripComboBoxControl toolStripComboBox = comboBox as ToolStripComboBoxControl;
if (toolStripComboBox == null || !(toolStripComboBox.Owner.Renderer is ToolStripProfessionalRenderer)) {
Debug.Assert(toolStripComboBox != null, "Why are we here and not a toolstrip combo?");
return true;
}
return false;
}
private static ProfessionalColorTable GetColorTable(ToolStripComboBoxControl toolStripComboBoxControl) {
if (toolStripComboBoxControl != null) {
return toolStripComboBoxControl.ColorTable;
}
return ProfessionalColors.ColorTable;
}
protected override Color GetOuterBorderColor(ComboBox comboBox) {
if (UseBaseAdapter(comboBox)) {
return base.GetOuterBorderColor(comboBox);
}
return (comboBox.Enabled) ? SystemColors.Window : GetColorTable(comboBox as ToolStripComboBoxControl).ComboBoxBorder;
}
protected override Color GetPopupOuterBorderColor(ComboBox comboBox, bool focused) {
if (UseBaseAdapter(comboBox)) {
return base.GetPopupOuterBorderColor(comboBox, focused);
}
if (!comboBox.Enabled) {
return SystemColors.ControlDark;
}
return (focused) ? GetColorTable(comboBox as ToolStripComboBoxControl).ComboBoxBorder : SystemColors.Window;
}
protected override void DrawFlatComboDropDown(ComboBox comboBox, Graphics g, Rectangle dropDownRect) {
if (UseBaseAdapter(comboBox)) {
base.DrawFlatComboDropDown(comboBox, g, dropDownRect);
return;
}
if (!comboBox.Enabled || !ToolStripManager.VisualStylesEnabled) {
g.FillRectangle(SystemBrushes.Control, dropDownRect);
}
else {
ToolStripComboBoxControl toolStripComboBox = comboBox as ToolStripComboBoxControl;
ProfessionalColorTable colorTable = GetColorTable(toolStripComboBox);
if (!comboBox.DroppedDown) {
bool focused = comboBox.ContainsFocus || comboBox.MouseIsOver;
if (focused) {
using (Brush b = new LinearGradientBrush(dropDownRect, colorTable.ComboBoxButtonSelectedGradientBegin, colorTable.ComboBoxButtonSelectedGradientEnd, LinearGradientMode.Vertical)) {
g.FillRectangle(b, dropDownRect);
}
}
else if (toolStripComboBox.Owner.IsOnOverflow) {
using (Brush b = new SolidBrush(colorTable.ComboBoxButtonOnOverflow)) {
g.FillRectangle(b, dropDownRect);
}
}
else {
using (Brush b = new LinearGradientBrush(dropDownRect, colorTable.ComboBoxButtonGradientBegin, colorTable.ComboBoxButtonGradientEnd, LinearGradientMode.Vertical)) {
g.FillRectangle(b, dropDownRect);
}
}
}
else {
using (Brush b = new LinearGradientBrush(dropDownRect, colorTable.ComboBoxButtonPressedGradientBegin, colorTable.ComboBoxButtonPressedGradientEnd, LinearGradientMode.Vertical)) {
g.FillRectangle(b, dropDownRect);
}
}
}
Brush brush;
if (comboBox.Enabled) {
if (AccessibilityImprovements.Level2 && SystemInformation.HighContrast && (comboBox.ContainsFocus || comboBox.MouseIsOver) && ToolStripManager.VisualStylesEnabled) {
brush = SystemBrushes.HighlightText;
}
else {
brush = SystemBrushes.ControlText;
}
}
else {
brush = SystemBrushes.GrayText;
}
Point middle = new Point(dropDownRect.Left + dropDownRect.Width / 2, dropDownRect.Top + dropDownRect.Height / 2);
// if the width is odd - favor pushing it over one pixel right.
middle.X += (dropDownRect.Width % 2);
g.FillPolygon(brush, new Point[] {
new Point(middle.X - FlatComboAdapter.Offset2Pixels, middle.Y - 1),
new Point(middle.X + FlatComboAdapter.Offset2Pixels + 1, middle.Y - 1),
new Point(middle.X, middle.Y + FlatComboAdapter.Offset2Pixels)
});
}
}
protected override bool IsInputKey(Keys keyData) {
if ((keyData & Keys.Alt) == Keys.Alt) {
if ((keyData & Keys.Down) == Keys.Down || (keyData & Keys.Up) == Keys.Up) {
return true;
}
}
return base.IsInputKey(keyData);
}
protected override void OnDropDownClosed(EventArgs e) {
base.OnDropDownClosed(e);
Invalidate();
Update();
}
internal override bool SupportsUiaProviders {
get {
return AccessibilityImprovements.Level3;
}
}
internal class ToolStripComboBoxControlAccessibleObject : ComboBoxUiaProvider {
private ComboBox.ChildAccessibleObject childAccessibleObject;
public ToolStripComboBoxControlAccessibleObject(ToolStripComboBoxControl toolStripComboBoxControl) : base(toolStripComboBoxControl) {
childAccessibleObject = new ChildAccessibleObject(toolStripComboBoxControl, toolStripComboBoxControl.Handle);
}
internal override UnsafeNativeMethods.IRawElementProviderFragment FragmentNavigate(UnsafeNativeMethods.NavigateDirection direction) {
switch (direction) {
case UnsafeNativeMethods.NavigateDirection.Parent:
case UnsafeNativeMethods.NavigateDirection.PreviousSibling:
case UnsafeNativeMethods.NavigateDirection.NextSibling:
var toolStripComboBoxControl = Owner as ToolStripComboBoxControl;
if (toolStripComboBoxControl != null) {
return toolStripComboBoxControl.Owner.AccessibilityObject.FragmentNavigate(direction);
}
break;
}
return base.FragmentNavigate(direction);
}
internal override UnsafeNativeMethods.IRawElementProviderFragmentRoot FragmentRoot {
get {
var toolStripComboBoxControl = this.Owner as ToolStripComboBoxControl;
if (toolStripComboBoxControl != null) {
return toolStripComboBoxControl.Owner.Owner.AccessibilityObject;
}
return base.FragmentRoot;
}
}
internal override object GetPropertyValue(int propertyID) {
switch (propertyID) {
case NativeMethods.UIA_ControlTypePropertyId:
return NativeMethods.UIA_ComboBoxControlTypeId;
case NativeMethods.UIA_IsOffscreenPropertyId:
return (this.State & AccessibleStates.Offscreen) == AccessibleStates.Offscreen;
}
return base.GetPropertyValue(propertyID);
}
internal override bool IsPatternSupported(int patternId)
{
if (patternId == NativeMethods.UIA_ExpandCollapsePatternId ||
patternId == NativeMethods.UIA_ValuePatternId) {
return true;
}
return base.IsPatternSupported(patternId);
}
}
}
}
}
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