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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Runtime.CompilerServices;
using System.Windows.Forms.Automation;
using Windows.Win32.System.Variant;
using Windows.Win32.UI.Accessibility;
using IAccessible = Accessibility.IAccessible;
namespace System.Windows.Forms.Tests.AccessibleObjects;
public class Control_ControlAccessibleObjectTests
{
// These controls return an empty "AccessKey" property because they have a ControlStyles.UseTextForAccessibility flag
// with "false" value, which prohibits the use of text to create the AccessKey.
// This behavior is consistent with .NET Framework 4.7.2
private static readonly Type[] s_controlsNotUseTextForAccessibility =
[
typeof(CheckedListBox),
typeof(ComboBox),
typeof(DataGridViewComboBoxEditingControl),
typeof(DataGridViewTextBoxEditingControl),
typeof(DateTimePicker),
typeof(DomainUpDown),
typeof(HScrollBar),
typeof(ListBox),
typeof(ListView),
typeof(MaskedTextBox),
typeof(NumericUpDown),
typeof(ProgressBar),
typeof(RichTextBox),
typeof(TextBox),
typeof(TrackBar),
typeof(TreeView),
typeof(VScrollBar),
typeof(WebBrowser),
];
// These controls have special conditions for setting the Text property.
// Please check if the control type isn't contained here in cases where text change is needed
// otherwise an error can be thrown.
private static readonly Type[] s_controlsIgnoringTextChangesForTests =
[
typeof(DateTimePicker), typeof(WebBrowser)
];
[WinFormsFact]
public void ControlAccessibleObject_Ctor_ControlWithoutHandle()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.False(ownerControl.IsHandleCreated);
Assert.True(accessibleObject.Bounds.X >= 0);
Assert.True(accessibleObject.Bounds.Y >= 0);
Assert.Equal(0, accessibleObject.Bounds.Width);
Assert.Equal(0, accessibleObject.Bounds.Height);
Assert.Equal(IntPtr.Zero, accessibleObject.HandleInternal);
Assert.Null(accessibleObject.DefaultAction);
Assert.Null(accessibleObject.Description);
Assert.Null(accessibleObject.Help);
Assert.Null(accessibleObject.KeyboardShortcut);
Assert.Null(accessibleObject.Name);
Assert.Same(ownerControl, accessibleObject.Owner);
Assert.Null(accessibleObject.Parent);
Assert.Equal(AccessibleRole.None, accessibleObject.Role);
Assert.Equal(AccessibleStates.None, accessibleObject.State);
Assert.Equal(string.Empty, accessibleObject.Value);
}
[WinFormsFact]
public void ControlAccessibleObject_Ctor_ControlWithHandle()
{
using Control ownerControl = new();
Assert.NotEqual(IntPtr.Zero, ownerControl.Handle);
int invalidatedCallCount = 0;
ownerControl.Invalidated += (sender, e) => invalidatedCallCount++;
int styleChangedCallCount = 0;
ownerControl.StyleChanged += (sender, e) => styleChangedCallCount++;
int createdCallCount = 0;
ownerControl.HandleCreated += (sender, e) => createdCallCount++;
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.True(ownerControl.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
Assert.True(accessibleObject.Bounds.X >= 0);
Assert.True(accessibleObject.Bounds.Y >= 0);
Assert.Equal(0, accessibleObject.Bounds.Width);
Assert.Equal(0, accessibleObject.Bounds.Height);
Assert.Null(accessibleObject.DefaultAction);
Assert.Null(accessibleObject.Description);
Assert.Equal(ownerControl.Handle, accessibleObject.Handle);
Assert.Null(accessibleObject.Help);
Assert.Null(accessibleObject.KeyboardShortcut);
Assert.Null(accessibleObject.Name);
Assert.Same(ownerControl, accessibleObject.Owner);
Assert.NotNull(accessibleObject.Parent);
Assert.Equal(AccessibleRole.Client, accessibleObject.Role);
Assert.Equal(AccessibleStates.Focusable, accessibleObject.State);
Assert.Null(accessibleObject.Value);
}
[WinFormsFact]
public void ControlAccessibleObject_Ctor_NullControl_ThrowsArgumentNullException()
{
Assert.Throws<ArgumentNullException>("ownerControl", () => new Control.ControlAccessibleObject(null));
}
[WinFormsFact]
public void ControlAccessibleObject_created_via_owner_ensure_handle_set_when_owner_created()
{
using Control ownerControl = new();
AccessibleObject accessibleObject = ownerControl.AccessibilityObject;
Assert.IsType<Control.ControlAccessibleObject>(accessibleObject);
Control.ControlAccessibleObject controlAccessibleObject = (Control.ControlAccessibleObject)accessibleObject;
Assert.False(ownerControl.IsHandleCreated);
Assert.Equal(IntPtr.Zero, controlAccessibleObject.HandleInternal);
// force the owner control to create its handle
ownerControl.CreateControl();
Assert.True(ownerControl.IsHandleCreated);
Assert.Equal(ownerControl.Handle, controlAccessibleObject.Handle);
}
[WinFormsFact]
public void ControlAccessibleObject_created_via_owner_ensure_handle_reset_when_owner_destroyed()
{
using Control ownerControl = new();
ownerControl.CreateControl();
AccessibleObject accessibleObject = ownerControl.AccessibilityObject;
Assert.IsType<Control.ControlAccessibleObject>(accessibleObject);
Control.ControlAccessibleObject controlAccessibleObject = (Control.ControlAccessibleObject)accessibleObject;
Assert.True(ownerControl.IsHandleCreated);
Assert.Equal(ownerControl.Handle, controlAccessibleObject.Handle);
ownerControl.Dispose();
Assert.False(ownerControl.IsHandleCreated);
Assert.Equal(IntPtr.Zero, controlAccessibleObject.Handle);
}
[WinFormsFact]
public void ControlAccessibleObject_created_detached_owner_ensure_handle_set_when_owner_created()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.False(ownerControl.IsHandleCreated);
Assert.Equal(IntPtr.Zero, accessibleObject.HandleInternal);
// force the owner control to create its handle
ownerControl.CreateControl();
Assert.True(ownerControl.IsHandleCreated);
Assert.Equal(ownerControl.Handle, accessibleObject.Handle);
}
[WinFormsFact]
public void ControlAccessibleObject_created_detached_owner_ensure_handle_reset_when_owner_destroyed()
{
using Control ownerControl = new();
var controlAccessibleObject = new Control.ControlAccessibleObject(ownerControl);
ownerControl.CreateControl();
Assert.True(ownerControl.IsHandleCreated);
Assert.Equal(ownerControl.Handle, controlAccessibleObject.Handle);
ownerControl.Dispose();
Assert.False(ownerControl.IsHandleCreated);
// NB: Detached object, so we don't get notifications
Assert.NotEqual(IntPtr.Zero, controlAccessibleObject.Handle);
}
[WinFormsTheory]
[StringWithNullData]
public void ControlAccessibleObject_DefaultAction_GetWithAccessibleDefaultActionDescription_ReturnsExpected(string accessibleDefaultActionDescription)
{
using Control ownerControl = new()
{
AccessibleDefaultActionDescription = accessibleDefaultActionDescription
};
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(accessibleDefaultActionDescription, accessibleObject.DefaultAction);
}
[WinFormsTheory]
[StringWithNullData]
public void ControlAccessibleObject_GetPropertyValue_LegacyIAccessibleDefaultActionPropertyId_ReturnsExpected(string accessibleDefaultActionDescription)
{
using Control ownerControl = new()
{
AccessibleDefaultActionDescription = accessibleDefaultActionDescription
};
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
if (!string.IsNullOrEmpty(accessibleDefaultActionDescription))
{
Assert.Equal(accessibleDefaultActionDescription, ((BSTR)accessibleObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_LegacyIAccessibleDefaultActionPropertyId)).ToStringAndFree());
}
else
{
Assert.Equal(VARIANT.Empty, accessibleObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_LegacyIAccessibleDefaultActionPropertyId));
}
}
[WinFormsTheory]
[StringWithNullData]
public void ControlAccessibleObject_Description_GetWithAccessibleDescription_ReturnsExpected(string accessibleDescription)
{
using Control ownerControl = new()
{
AccessibleDescription = accessibleDescription
};
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(accessibleDescription, accessibleObject.Description);
}
public static TheoryData<object> Handle_Set_DataTestData()
{
return new TheoryData<object>
{
null,
IntPtr.Zero,
new IntPtr(-1),
new IntPtr(1),
new IntPtr(250)
};
}
[WinFormsTheory]
[MemberData(nameof(Handle_Set_DataTestData))]
public void ControlAccessibleObject_Handle_Set_Success(object testValue)
{
IntPtr value;
if (testValue is null)
{
using Control control = new();
value = control.Handle;
}
else
{
value = (IntPtr)testValue;
}
using Control ownerControl = new();
ownerControl.CreateControl();
Assert.True(ownerControl.IsHandleCreated);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.True(ownerControl.IsHandleCreated);
// Set value.
accessibleObject.Handle = value;
Assert.Equal(value, accessibleObject.Handle);
// Set same value.
accessibleObject.Handle = value;
Assert.Equal(value, accessibleObject.Handle);
}
[WinFormsTheory]
[StringWithNullData]
public void ControlAccessibleObject_Help_GetWithQueryAccessibilityHelpEvent_Success(string result)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
int callCount = 0;
void handler(object sender, QueryAccessibilityHelpEventArgs e)
{
Assert.Same(ownerControl, sender);
Assert.Null(e.HelpKeyword);
Assert.Null(e.HelpNamespace);
Assert.Null(e.HelpString);
e.HelpString = result;
callCount++;
}
ownerControl.QueryAccessibilityHelp += handler;
// Get with handler.
Assert.Equal(result, accessibleObject.Help);
Assert.Equal(1, callCount);
// Get again.
Assert.Equal(result, accessibleObject.Help);
Assert.Equal(2, callCount);
// Remove handler.
ownerControl.QueryAccessibilityHelp -= handler;
Assert.Null(accessibleObject.Help);
Assert.Equal(2, callCount);
}
public static IEnumerable<object[]> KeyboardShortcut_Get_TestData()
{
yield return new object[] { true, null, null };
yield return new object[] { true, string.Empty, null };
yield return new object[] { true, "Text", null };
yield return new object[] { false, null, null };
yield return new object[] { false, string.Empty, null };
yield return new object[] { false, "Text", null };
// With mnemonic.
yield return new object[] { true, "&", null };
yield return new object[] { true, "&&a", null };
yield return new object[] { true, "a&", null };
yield return new object[] { true, "a&b", "Alt+b" };
yield return new object[] { true, "a&bc", "Alt+b" };
yield return new object[] { false, "&", null };
yield return new object[] { false, "&&a", null };
yield return new object[] { false, "a&", null };
yield return new object[] { false, "a&b", null };
yield return new object[] { false, "a&bc", null };
}
[WinFormsTheory]
[MemberData(nameof(KeyboardShortcut_Get_TestData))]
public void ControlAccessibleObject_KeyboardShortcut_Get_ReturnsExpected(bool useTextForAccessibility, string text, string expected)
{
using SubControl ownerControl = new()
{
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.KeyboardShortcut);
}
[WinFormsTheory]
[MemberData(nameof(KeyboardShortcut_Get_TestData))]
public void ControlAccessibleObject_KeyboardShortcut_GetWithNonContainerControlParent_IgnoresParent(bool useTextForAccessibility, string text, string expected)
{
using Control parent = new();
using SubControl ownerControl = new()
{
Parent = parent,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.KeyboardShortcut);
}
[WinFormsTheory]
[MemberData(nameof(KeyboardShortcut_Get_TestData))]
public void ControlAccessibleObject_KeyboardShortcut_GetWithContainerControlParentWithoutPreviousLabel_IgnoresParent(bool useTextForAccessibility, string text, string expected)
{
using ContainerControl parent = new();
using SubControl ownerControl = new()
{
Parent = parent,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.KeyboardShortcut);
}
public static IEnumerable<object[]> KeyboardShortcut_GetWithPreviousLabel_TestData()
{
yield return new object[] { true, null, null, null };
yield return new object[] { true, null, string.Empty, null };
yield return new object[] { true, null, "LabelText", null };
yield return new object[] { true, string.Empty, null, null };
yield return new object[] { true, string.Empty, string.Empty, null };
yield return new object[] { true, string.Empty, "LabelText", null };
yield return new object[] { true, "Text", null, null };
yield return new object[] { true, "Text", string.Empty, null };
yield return new object[] { true, "Text", "LabelText", null };
yield return new object[] { false, null, null, null };
yield return new object[] { false, null, string.Empty, null };
yield return new object[] { false, null, "LabelText", null };
yield return new object[] { false, string.Empty, null, null };
yield return new object[] { false, string.Empty, string.Empty, null };
yield return new object[] { false, string.Empty, "LabelText", null };
yield return new object[] { false, "Text", null, null };
yield return new object[] { false, "Text", string.Empty, null };
yield return new object[] { false, "Text", "LabelText", null };
// With mnemonic.
yield return new object[] { true, "&", null, null };
yield return new object[] { true, "&&a", null, null };
yield return new object[] { true, "a&", null, null };
yield return new object[] { true, "a&b", null, "Alt+b" };
yield return new object[] { true, "a&bc", null, "Alt+b" };
yield return new object[] { true, null, "&", null };
yield return new object[] { true, null, "&&a", null };
yield return new object[] { true, null, "a&", null };
yield return new object[] { true, null, "a&b", "Alt+b" };
yield return new object[] { true, null, "a&bc", "Alt+b" };
yield return new object[] { false, "&", null, null };
yield return new object[] { false, "&&a", null, null };
yield return new object[] { false, "a&", null, null };
yield return new object[] { false, "a&b", null, null };
yield return new object[] { false, "a&bc", null, null };
yield return new object[] { false, null, "&", null };
yield return new object[] { false, null, "&&a", null };
yield return new object[] { false, null, "a&", null };
yield return new object[] { false, null, "a&b", "Alt+b" };
yield return new object[] { false, null, "a&bc", "Alt+b" };
}
[WinFormsTheory]
[MemberData(nameof(KeyboardShortcut_GetWithPreviousLabel_TestData))]
public void ControlAccessibleObject_KeyboardShortcut_GetWithContainerControlParentWithPreviousLabel_ReturnsExpected(bool useTextForAccessibility, string text, string labelText, string expected)
{
using ContainerControl parent = new();
using Label previousLabel = new()
{
Parent = parent,
Text = labelText
};
using Control previousControl = new()
{
Parent = parent,
Visible = false
};
using SubControl ownerControl = new()
{
Parent = parent,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.KeyboardShortcut);
}
[WinFormsTheory]
[MemberData(nameof(KeyboardShortcut_GetWithPreviousLabel_TestData))]
public void ControlAccessibleObject_KeyboardShortcut_GetWithPreviousNotTabStopAndPreviousLabel_IgnoresPreviousLabel(bool useTextForAccessibility, string text, string labelText, string expected)
{
using ContainerControl parent = new();
using Label previousLabel = new()
{
Parent = parent,
Text = labelText
};
using Control previousControl = new()
{
Parent = parent,
TabStop = false
};
using SubControl ownerControl = new()
{
Parent = parent,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.KeyboardShortcut);
}
[WinFormsTheory]
[MemberData(nameof(KeyboardShortcut_Get_TestData))]
public void ControlAccessibleObject_KeyboardShortcut_GetWithPreviousTabStopVisibleAndPreviousLabel_IgnoresPreviousLabel(bool useTextForAccessibility, string text, string expected)
{
using ContainerControl parent = new();
using Label previousLabel = new()
{
Parent = parent,
Text = "LabelText"
};
using Control previousControl = new()
{
Parent = parent
};
using SubControl ownerControl = new()
{
Parent = parent,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.KeyboardShortcut);
}
public static IEnumerable<object[]> Name_Get_TestData()
{
yield return new object[] { true, null, null, null };
yield return new object[] { true, null, string.Empty, null };
yield return new object[] { true, null, "text", "text" };
yield return new object[] { true, string.Empty, null, string.Empty };
yield return new object[] { true, string.Empty, string.Empty, string.Empty };
yield return new object[] { true, string.Empty, "text", string.Empty };
yield return new object[] { true, "name", null, "name" };
yield return new object[] { true, "name", string.Empty, "name" };
yield return new object[] { true, "name", "text", "name" };
yield return new object[] { false, null, null, null };
yield return new object[] { false, null, string.Empty, null };
yield return new object[] { false, null, "text", null };
yield return new object[] { false, string.Empty, null, string.Empty };
yield return new object[] { false, string.Empty, string.Empty, string.Empty };
yield return new object[] { false, string.Empty, "text", string.Empty };
yield return new object[] { false, "name", null, "name" };
yield return new object[] { false, "name", string.Empty, "name" };
yield return new object[] { false, "name", "text", "name" };
// With mnemonic.
yield return new object[] { true, "Name1&Name2", "text", "Name1&Name2" };
yield return new object[] { true, null, "&", string.Empty };
yield return new object[] { true, null, "&&Name", "&Name" };
yield return new object[] { true, null, "Name1&Name2", "Name1Name2" };
yield return new object[] { true, null, "Name1&Name2&Name3", "Name1Name2Name3" };
yield return new object[] { true, null, "Name1&Name2&", "Name1Name2" };
yield return new object[] { false, "Name1&Name2", "text", "Name1&Name2" };
yield return new object[] { false, null, "&", null };
yield return new object[] { false, null, "&&Name", null };
yield return new object[] { false, null, "Name1&Name2", null };
yield return new object[] { false, null, "Name1&Name2&Name3", null };
yield return new object[] { false, null, "Name1&Name2&", null };
}
[WinFormsTheory]
[MemberData(nameof(Name_Get_TestData))]
public void ControlAccessibleObject_Name_Get_ReturnsExpected(bool useTextForAccessibility, string accessibleName, string text, string expected)
{
using SubControl ownerControl = new()
{
AccessibleName = accessibleName,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.Name);
}
[WinFormsTheory]
[MemberData(nameof(Name_Get_TestData))]
public void ControlAccessibleObject_Name_GetWithNonContainerControlParent_IgnoresParent(bool useTextForAccessibility, string accessibleName, string text, string expected)
{
using Control parent = new();
using SubControl ownerControl = new()
{
Parent = parent,
AccessibleName = accessibleName,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.Name);
}
[WinFormsTheory]
[MemberData(nameof(Name_Get_TestData))]
public void ControlAccessibleObject_Name_GetWithContainerControlParentEmpty_IgnoresParent(bool useTextForAccessibility, string accessibleName, string text, string expected)
{
using ContainerControl parent = new();
using SubControl ownerControl = new()
{
Parent = parent,
AccessibleName = accessibleName,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.Name);
}
public static IEnumerable<object[]> Name_GetWithPreviousLabel_TestData()
{
yield return new object[] { true, null, null, null, null };
yield return new object[] { true, null, null, string.Empty, null };
yield return new object[] { true, null, null, "LabelText", "LabelText" };
yield return new object[] { true, null, string.Empty, null, null };
yield return new object[] { true, null, string.Empty, string.Empty, null };
yield return new object[] { true, null, string.Empty, "LabelText", "LabelText" };
yield return new object[] { true, null, "text", null, "text" };
yield return new object[] { true, null, "text", string.Empty, "text" };
yield return new object[] { true, null, "text", "LabelText", "text" };
yield return new object[] { true, string.Empty, null, null, string.Empty };
yield return new object[] { true, string.Empty, null, string.Empty, string.Empty };
yield return new object[] { true, string.Empty, null, "LabelText", string.Empty };
yield return new object[] { true, string.Empty, string.Empty, null, string.Empty };
yield return new object[] { true, string.Empty, string.Empty, string.Empty, string.Empty };
yield return new object[] { true, string.Empty, string.Empty, "LabelText", string.Empty };
yield return new object[] { true, string.Empty, "text", null, string.Empty };
yield return new object[] { true, string.Empty, "text", string.Empty, string.Empty };
yield return new object[] { true, string.Empty, "text", "LabelText", string.Empty };
yield return new object[] { true, "name", null, null, "name" };
yield return new object[] { true, "name", null, string.Empty, "name" };
yield return new object[] { true, "name", null, "LabelText", "name" };
yield return new object[] { true, "name", string.Empty, null, "name" };
yield return new object[] { true, "name", string.Empty, string.Empty, "name" };
yield return new object[] { true, "name", string.Empty, "LabelText", "name" };
yield return new object[] { true, "name", "text", null, "name" };
yield return new object[] { true, "name", "text", string.Empty, "name" };
yield return new object[] { true, "name", "text", "LabelText", "name" };
yield return new object[] { false, null, null, null, null };
yield return new object[] { false, null, null, string.Empty, null };
yield return new object[] { false, null, null, "LabelText", "LabelText" };
yield return new object[] { false, null, string.Empty, null, null };
yield return new object[] { false, null, string.Empty, string.Empty, null };
yield return new object[] { false, null, string.Empty, "LabelText", "LabelText" };
yield return new object[] { false, null, "text", null, null };
yield return new object[] { false, null, "text", string.Empty, null };
yield return new object[] { false, null, "text", "LabelText", "LabelText" };
yield return new object[] { false, string.Empty, null, null, string.Empty };
yield return new object[] { false, string.Empty, null, string.Empty, string.Empty };
yield return new object[] { false, string.Empty, null, "LabelText", string.Empty };
yield return new object[] { false, string.Empty, string.Empty, null, string.Empty };
yield return new object[] { false, string.Empty, string.Empty, string.Empty, string.Empty };
yield return new object[] { false, string.Empty, string.Empty, "LabelText", string.Empty };
yield return new object[] { false, string.Empty, "text", null, string.Empty };
yield return new object[] { false, string.Empty, "text", string.Empty, string.Empty };
yield return new object[] { false, string.Empty, "text", "LabelText", string.Empty };
yield return new object[] { false, "name", null, null, "name" };
yield return new object[] { false, "name", null, string.Empty, "name" };
yield return new object[] { false, "name", null, "LabelText", "name" };
yield return new object[] { false, "name", string.Empty, null, "name" };
yield return new object[] { false, "name", string.Empty, string.Empty, "name" };
yield return new object[] { false, "name", string.Empty, "LabelText", "name" };
yield return new object[] { false, "name", "text", null, "name" };
yield return new object[] { false, "name", "text", string.Empty, "name" };
yield return new object[] { false, "name", "text", "LabelText", "name" };
// With mnemonic.
yield return new object[] { true, "Name1&Name2", "text", null, "Name1&Name2" };
yield return new object[] { true, null, "&", null, string.Empty };
yield return new object[] { true, null, "&&Name", null, "&Name" };
yield return new object[] { true, null, "Name1&Name2", null, "Name1Name2" };
yield return new object[] { true, null, "Name1&Name2&Name3", null, "Name1Name2Name3" };
yield return new object[] { true, null, "Name1&Name2&", null, "Name1Name2" };
yield return new object[] { true, null, null, "&", string.Empty };
yield return new object[] { true, null, null, "&&Name", "&Name" };
yield return new object[] { true, null, null, "Name1&Name2", "Name1Name2" };
yield return new object[] { true, null, null, "Name1&Name2&Name3", "Name1Name2Name3" };
yield return new object[] { true, null, null, "Name1&Name2&", "Name1Name2" };
yield return new object[] { false, "Name1&Name2", "text", null, "Name1&Name2" };
yield return new object[] { false, null, "&", null, null };
yield return new object[] { false, null, "&&Name", null, null };
yield return new object[] { false, null, "Name1&Name2", null, null };
yield return new object[] { false, null, "Name1&Name2&Name3", null, null };
yield return new object[] { false, null, "Name1&Name2&", null, null };
yield return new object[] { false, null, null, "&", string.Empty };
yield return new object[] { false, null, null, "&&Name", "&Name" };
yield return new object[] { false, null, null, "Name1&Name2", "Name1Name2" };
yield return new object[] { false, null, null, "Name1&Name2&Name3", "Name1Name2Name3" };
yield return new object[] { false, null, null, "Name1&Name2&", "Name1Name2" };
}
[WinFormsTheory]
[MemberData(nameof(Name_GetWithPreviousLabel_TestData))]
public void ControlAccessibleObject_Name_GetWithContainerControlParentWithPreviousLabel_ReturnsExpected(bool useTextForAccessibility, string accessibleName, string text, string labelText, string expected)
{
using ContainerControl parent = new();
using Label previousLabel = new()
{
Parent = parent,
Text = labelText
};
using Control previousControl = new()
{
Parent = parent,
Visible = false
};
using SubControl ownerControl = new()
{
Parent = parent,
AccessibleName = accessibleName,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.Name);
}
[WinFormsTheory]
[MemberData(nameof(Name_GetWithPreviousLabel_TestData))]
public void ControlAccessibleObject_Name_GetWithPreviousNotTabStopAndPreviousLabel_ReturnsExpected(bool useTextForAccessibility, string accessibleName, string text, string labelText, string expected)
{
using ContainerControl parent = new();
using Label previousLabel = new()
{
Parent = parent,
Text = labelText
};
using Control previousControl = new()
{
Parent = parent,
TabStop = false
};
using SubControl ownerControl = new()
{
Parent = parent,
AccessibleName = accessibleName,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.Name);
}
[WinFormsTheory]
[MemberData(nameof(Name_Get_TestData))]
public void ControlAccessibleObject_Name_GetWithPreviousTabStopVisibleAndPreviousLabel_ReturnsExpected(bool useTextForAccessibility, string accessibleName, string text, string expected)
{
using ContainerControl parent = new();
using Label previousLabel = new()
{
Parent = parent,
Text = "LabelText"
};
using Control previousControl = new()
{
Parent = parent
};
using SubControl ownerControl = new()
{
Parent = parent,
AccessibleName = accessibleName,
Text = text
};
ownerControl.SetStyle(ControlStyles.UseTextForAccessibility, useTextForAccessibility);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(expected, accessibleObject.Name);
}
[WinFormsTheory]
[StringWithNullData]
public void ControlAccessibleObject_Name_Set_GetReturnsExpected(string value)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl)
{
Name = value
};
Assert.Equal(value, accessibleObject.Name);
Assert.Empty(ownerControl.Name);
Assert.Equal(value, ownerControl.AccessibleName);
// Set same.
accessibleObject.Name = value;
Assert.Equal(value, accessibleObject.Name);
Assert.Empty(ownerControl.Name);
Assert.Equal(value, ownerControl.AccessibleName);
}
public static IEnumerable<object[]> Role_Get_TestData()
{
yield return new object[] { AccessibleRole.None };
yield return new object[] { AccessibleRole.TitleBar };
yield return new object[] { AccessibleRole.MenuBar };
yield return new object[] { AccessibleRole.ScrollBar };
yield return new object[] { AccessibleRole.Grip };
yield return new object[] { AccessibleRole.Sound };
yield return new object[] { AccessibleRole.Cursor };
yield return new object[] { AccessibleRole.Caret };
yield return new object[] { AccessibleRole.Alert };
yield return new object[] { AccessibleRole.Window };
yield return new object[] { AccessibleRole.Client };
yield return new object[] { AccessibleRole.MenuPopup };
yield return new object[] { AccessibleRole.MenuItem };
yield return new object[] { AccessibleRole.ToolTip };
yield return new object[] { AccessibleRole.Application };
yield return new object[] { AccessibleRole.Document };
yield return new object[] { AccessibleRole.Pane };
yield return new object[] { AccessibleRole.Chart };
yield return new object[] { AccessibleRole.Dialog };
yield return new object[] { AccessibleRole.Border };
yield return new object[] { AccessibleRole.Grouping };
yield return new object[] { AccessibleRole.Separator };
yield return new object[] { AccessibleRole.ToolBar };
yield return new object[] { AccessibleRole.StatusBar };
yield return new object[] { AccessibleRole.Table };
yield return new object[] { AccessibleRole.ColumnHeader };
yield return new object[] { AccessibleRole.RowHeader };
yield return new object[] { AccessibleRole.Column };
yield return new object[] { AccessibleRole.Row };
yield return new object[] { AccessibleRole.Cell };
yield return new object[] { AccessibleRole.Link };
yield return new object[] { AccessibleRole.HelpBalloon };
yield return new object[] { AccessibleRole.Character };
yield return new object[] { AccessibleRole.List };
yield return new object[] { AccessibleRole.ListItem };
yield return new object[] { AccessibleRole.Outline };
yield return new object[] { AccessibleRole.OutlineItem };
yield return new object[] { AccessibleRole.PageTab };
yield return new object[] { AccessibleRole.PropertyPage };
yield return new object[] { AccessibleRole.Indicator };
yield return new object[] { AccessibleRole.Graphic };
yield return new object[] { AccessibleRole.StaticText };
yield return new object[] { AccessibleRole.Text };
yield return new object[] { AccessibleRole.PushButton };
yield return new object[] { AccessibleRole.CheckButton };
yield return new object[] { AccessibleRole.RadioButton };
yield return new object[] { AccessibleRole.ComboBox };
yield return new object[] { AccessibleRole.DropList };
yield return new object[] { AccessibleRole.ProgressBar };
yield return new object[] { AccessibleRole.Dial };
yield return new object[] { AccessibleRole.HotkeyField };
yield return new object[] { AccessibleRole.Slider };
yield return new object[] { AccessibleRole.SpinButton };
yield return new object[] { AccessibleRole.Diagram };
yield return new object[] { AccessibleRole.Animation };
yield return new object[] { AccessibleRole.Equation };
yield return new object[] { AccessibleRole.ButtonDropDown };
yield return new object[] { AccessibleRole.ButtonMenu };
yield return new object[] { AccessibleRole.ButtonDropDownGrid };
yield return new object[] { AccessibleRole.WhiteSpace };
yield return new object[] { AccessibleRole.PageTabList };
yield return new object[] { AccessibleRole.Clock };
yield return new object[] { AccessibleRole.SplitButton };
yield return new object[] { AccessibleRole.IpAddress };
yield return new object[] { AccessibleRole.OutlineButton };
}
[WinFormsTheory]
[MemberData(nameof(Role_Get_TestData))]
public void ControlAccessibleObject_Role_GetWithAccessibleRole_ReturnsExpected(AccessibleRole accessibleRole)
{
using Control ownerControl = new()
{
AccessibleRole = accessibleRole
};
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(accessibleRole, accessibleObject.Role);
}
[WinFormsTheory]
[StringWithNullData]
public void ControlAccessibleObject_Value_Set_GetReturnsNull_IfHandleIsCreated(string value)
{
using Control ownerControl = new();
ownerControl.CreateControl();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl)
{
Value = value
};
Assert.Null(accessibleObject.Value);
// Set same.
accessibleObject.Value = value;
Assert.Null(accessibleObject.Value);
Assert.True(ownerControl.IsHandleCreated);
}
[WinFormsTheory]
[StringWithNullData]
public void ControlAccessibleObject_Value_Set_GetReturnsNull_IfHandleIsNotCreated(string value)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl)
{
Value = value
};
Assert.Equal(string.Empty, accessibleObject.Value);
// Set same.
accessibleObject.Value = value;
Assert.Equal(string.Empty, accessibleObject.Value);
Assert.False(ownerControl.IsHandleCreated);
}
[WinFormsFact]
public void ControlAccessibleObject_DoDefaultAction_InvokeDefault_Nop()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
accessibleObject.DoDefaultAction();
}
[WinFormsFact]
public void ControlAccessibleObject_GetChildCount_InvokeDefault_ReturnsMinusOne()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(-1, accessibleObject.GetChildCount());
}
[WinFormsFact]
public void ControlAccessibleObject_GetChildCount_InvokeWithChildren_ReturnsMinusOne()
{
using Control child = new();
using Control ownerControl = new();
ownerControl.Controls.Add(child);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(-1, accessibleObject.GetChildCount());
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(0)]
[InlineData(1)]
public void ControlAccessibleObject_GetChild_InvokeDefault_ReturnsNull(int index)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Null(accessibleObject.GetChild(index));
}
[WinFormsFact]
public void ControlAccessibleObject_GetFocused_InvokeDefault_ReturnsNull()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Null(accessibleObject.GetFocused());
}
[WinFormsFact]
public void ControlAccessibleObject_GetHelpTopic_InvokeDefault_ReturnsMinusOne()
{
AccessibleObject accessibleObject = new();
Assert.Equal(-1, accessibleObject.GetHelpTopic(out string fileName));
Assert.Null(fileName);
}
[WinFormsTheory]
[InlineData(null, null, 0, true, 0)]
[InlineData("", "", 0, true, 0)]
[InlineData("HelpNamespace", "invalid", 0, true, 0)]
[InlineData("HelpNamespace", "1", 1, true, 0)]
[InlineData(null, null, 0, false, -1)]
[InlineData("", "", 0, false, -1)]
[InlineData("HelpNamespace", "invalid", 0, false, -1)]
[InlineData("HelpNamespace", "1", 1, false, -1)]
public void ControlAccessibleObject_GetHelpTopic_InvokeWithQueryAccessibilityHelpEvent_ReturnsExpected(
string helpNamespace,
string helpKeyword,
int expectedResult,
bool createControl,
int expectedResultWithoutHandler)
{
using Control ownerControl = new();
if (createControl)
{
ownerControl.CreateControl();
}
Assert.Equal(createControl, ownerControl.IsHandleCreated);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(createControl, ownerControl.IsHandleCreated);
int callCount = 0;
void handler(object sender, QueryAccessibilityHelpEventArgs e)
{
Assert.Same(ownerControl, sender);
Assert.Null(e.HelpKeyword);
Assert.Null(e.HelpNamespace);
Assert.Null(e.HelpString);
e.HelpNamespace = helpNamespace;
e.HelpKeyword = helpKeyword;
callCount++;
}
ownerControl.QueryAccessibilityHelp += handler;
// Get with handler.
Assert.Equal(expectedResult, accessibleObject.GetHelpTopic(out string fileName));
Assert.Equal(helpNamespace, fileName);
Assert.Equal(1, callCount);
// Get again.
Assert.Equal(expectedResult, accessibleObject.GetHelpTopic(out fileName));
Assert.Equal(helpNamespace, fileName);
Assert.Equal(2, callCount);
// Remove handler.
ownerControl.QueryAccessibilityHelp -= handler;
Assert.Equal(expectedResultWithoutHandler, accessibleObject.GetHelpTopic(out fileName));
Assert.Null(fileName);
Assert.Equal(2, callCount);
}
[WinFormsFact]
public void ControlAccessibleObject_GetSelected_InvokeDefault_ReturnsNull()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Null(accessibleObject.GetSelected());
}
[WinFormsTheory]
[InlineData(-1, -2)]
[InlineData(0, 0)]
[InlineData(1, 2)]
public void AccessibleObject_HitTest_InvokeDefault_ReturnsNull(int x, int y)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Null(accessibleObject.HitTest(x, y));
}
[WinFormsTheory]
[EnumData<AccessibleNavigation>]
public void AccessibleObject_Navigate_InvokeDefault_ReturnsNull(AccessibleNavigation navdir)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Null(accessibleObject.Navigate(navdir));
}
[WinFormsTheory]
[InlineData(AccessibleEvents.Create)]
public void ControlAccessibleObject_NotifyClients_InvokeAccessibleEvents_Success(AccessibleEvents accEvent)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
accessibleObject.NotifyClients(accEvent);
}
[WinFormsTheory]
[InlineData(AccessibleEvents.Create, -1)]
[InlineData(AccessibleEvents.Create, 0)]
[InlineData(AccessibleEvents.Create, 1)]
public void ControlAccessibleObject_NotifyClients_InvokeAccessibleEventsInt_Success(AccessibleEvents accEvent, int childID)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
accessibleObject.NotifyClients(accEvent, childID);
}
[WinFormsTheory]
[InlineData(AccessibleEvents.Create, -1, -1)]
[InlineData(AccessibleEvents.Create, 1, 0)]
[InlineData(AccessibleEvents.Create, 2, 1)]
public void ControlAccessibleObject_NotifyClients_InvokeAccessibleEventsIntInt_Success(AccessibleEvents accEvent, int objectID, int childID)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
accessibleObject.NotifyClients(accEvent, objectID, childID);
}
[WinFormsFact]
public void ControlAccessibleObject_RaiseLiveRegionChanged_Invoke_Success()
{
using AutomationLiveRegionControl ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
accessibleObject.RaiseLiveRegionChanged();
}
[WinFormsFact]
public void ControlAccessibleObject_RaiseLiveRegionChanged_InvokeNotIAutomationLiveRegion_ThrowsInvalidOperationException()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Throws<InvalidOperationException>(() => accessibleObject.RaiseLiveRegionChanged());
}
[WinFormsTheory]
[InlineData(false)]
[InlineData(true)]
public void ControlAccessibleObject_RaiseAutomationEvent_IsHandleCreatedFlag(bool isHandleCreated)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.False(ownerControl.IsHandleCreated);
if (isHandleCreated)
{
Assert.NotEqual(IntPtr.Zero, ownerControl.Handle);
}
Assert.Equal(isHandleCreated, accessibleObject.RaiseAutomationEvent(UIA_EVENT_ID.UIA_AutomationPropertyChangedEventId));
Assert.Equal(isHandleCreated, ownerControl.IsHandleCreated);
}
[WinFormsTheory]
[InlineData(false)]
[InlineData(true)]
public void ControlAccessibleObject_RaiseAutomationPropertyChangedEvent_IsHandleCreatedFlag(bool isHandleCreated)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.False(ownerControl.IsHandleCreated);
if (isHandleCreated)
{
Assert.NotEqual(IntPtr.Zero, ownerControl.Handle);
}
using var ownerControlName = (VARIANT)ownerControl.Name;
Assert.Equal(isHandleCreated, accessibleObject.RaiseAutomationPropertyChangedEvent(UIA_PROPERTY_ID.UIA_NamePropertyId, ownerControlName, ownerControlName));
Assert.Equal(isHandleCreated, ownerControl.IsHandleCreated);
}
[WinFormsFact]
public void ControlAccessibleObject_ToString_Invoke_Success()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal("ControlAccessibleObject: Owner = System.Windows.Forms.Control", accessibleObject.ToString());
}
[WinFormsFact]
public void ControlAccessibleObject_IAccessibleaccFocus_InvokeDefault_ReturnsNull()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
IAccessible iAccessible = accessibleObject;
Assert.Null(iAccessible.accFocus);
}
[WinFormsTheory]
[InlineData(true, -1, -2, 0)]
[InlineData(true, 0, 0, 0)]
[InlineData(true, 1, 2, 0)]
[InlineData(false, -1, -2, null)]
[InlineData(false, 0, 0, null)]
[InlineData(false, 1, 2, null)]
public void AccessibleObject_IAccessibleaccHitTest_InvokeDefault_ReturnsExpectedValue(bool createControl, int x, int y, int? expectedValue)
{
using Control ownerControl = new();
if (createControl)
{
ownerControl.CreateControl();
}
Assert.Equal(createControl, ownerControl.IsHandleCreated);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(createControl, ownerControl.IsHandleCreated);
IAccessible iAccessible = accessibleObject;
Assert.Equal(expectedValue, iAccessible.accHitTest(x, y));
}
[WinFormsTheory]
[InlineData(true)]
[InlineData(false)]
public void ControlAccessibleObject_IAccessibleaccParent_InvokeDefault_ReturnsExpectedValue(bool createControl)
{
using Control ownerControl = new();
if (createControl)
{
ownerControl.CreateControl();
}
Assert.Equal(createControl, ownerControl.IsHandleCreated);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(createControl, ownerControl.IsHandleCreated);
IAccessible iAccessible = accessibleObject;
Assert.Equal(createControl, iAccessible.accParent is not null);
}
[WinFormsFact]
public void ControlAccessibleObject_IAccessibleaccSelection_InvokeDefault_ReturnsNull()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
IAccessible iAccessible = accessibleObject;
Assert.Null(iAccessible.accSelection);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void ControlAccessibleObject_IAccessibleget_accChild_InvokeNoSuchChild_ReturnsNull(int childID)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
IAccessible iAccessible = accessibleObject;
Assert.Null(iAccessible.get_accChild(childID));
}
[WinFormsFact]
public void ControlAccessibleObject_IAccessibleget_accChildCount_InvokeDefault_ReturnsExpected()
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
IAccessible iAccessible = accessibleObject;
Assert.Equal(0, iAccessible.accChildCount);
}
[WinFormsTheory]
[InlineData(true, 1)]
[InlineData(false, 0)]
public void ControlAccessibleObject_IAccessibleget_accChildCount_InvokeWithChildren_ReturnsExpected(bool createControl, int expectedCount)
{
using Control child = new();
using Control ownerControl = new();
if (createControl)
{
ownerControl.CreateControl();
}
Assert.Equal(createControl, ownerControl.IsHandleCreated);
ownerControl.Controls.Add(child);
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
Assert.Equal(createControl, ownerControl.IsHandleCreated);
IAccessible iAccessible = accessibleObject;
Assert.Equal(expectedCount, iAccessible.accChildCount);
}
[WinFormsTheory]
[InlineData(-1)]
[InlineData(1)]
public void ControlAccessibleObject_IAccessibleget_accRole_InvokeNoSuchChild_ReturnsNull(object varChild)
{
using Control ownerControl = new();
var accessibleObject = new Control.ControlAccessibleObject(ownerControl);
IAccessible iAccessible = accessibleObject;
Assert.Null(iAccessible.get_accRole(varChild));
}
[WinFormsFact]
public void ControlAccessibleObject_DoesntSupport_LegacyIAccessiblePattern()
{
using Control control = new();
var accessibleObject = control.AccessibilityObject;
bool expected = control.SupportsUiaProviders;
Assert.False(expected);
bool actual = accessibleObject.IsPatternSupported(UIA_PATTERN_ID.UIA_LegacyIAccessiblePatternId);
Assert.Equal(expected, actual);
}
[WinFormsFact]
public void ControlAccessibleObject_Supports_LegacyIAccessiblePattern_IfOwnerSupportsUia()
{
using Label control = new();
var accessibleObject = new Control.ControlAccessibleObject(control);
Assert.True(control.SupportsUiaProviders);
bool actual = accessibleObject.IsPatternSupported(UIA_PATTERN_ID.UIA_LegacyIAccessiblePatternId);
Assert.True(actual);
}
public static IEnumerable<object[]> ControlAccessibleObject_TestData()
{
return ReflectionHelper.GetPublicNotAbstractClasses<Control>().Select(type => new object[] { type });
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_Custom_Role_ReturnsExpected(Type type)
{
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
if (!control.SupportsUiaProviders)
{
return;
}
control.AccessibleRole = AccessibleRole.Link;
AccessibleObject controlAccessibleObject = control.AccessibilityObject;
var accessibleObjectRole = controlAccessibleObject.Role;
Assert.Equal(AccessibleRole.Link, accessibleObjectRole);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_GetPropertyValue_AccessKey_ReturnExpected(Type type)
{
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
if (!control.SupportsUiaProviders)
{
return;
}
if (!s_controlsIgnoringTextChangesForTests.Contains(type))
{
control.Text = "&Name";
}
AccessibleObject controlAccessibleObject = control.AccessibilityObject;
string expectedValue = s_controlsNotUseTextForAccessibility.Contains(type) ? string.Empty : "Alt+n";
Assert.Equal(expectedValue, ((BSTR)controlAccessibleObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_AccessKeyPropertyId)).ToStringAndFree());
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_IsPatternSupported_LegacyIAccessible_ReturnsTrue(Type type)
{
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
if (!control.SupportsUiaProviders)
{
return;
}
AccessibleObject controlAccessibleObject = control.AccessibilityObject;
bool supportsLegacyIAccessiblePatternId = controlAccessibleObject.IsPatternSupported(UIA_PATTERN_ID.UIA_LegacyIAccessiblePatternId);
Assert.True(supportsLegacyIAccessiblePatternId);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_Custom_Description_ReturnsExpected(Type type)
{
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
if (!control.SupportsUiaProviders)
{
return;
}
control.AccessibleDescription = "Test Accessible Description";
AccessibleObject controlAccessibleObject = control.AccessibilityObject;
string accessibleObjectDescription = controlAccessibleObject.Description;
Assert.Equal("Test Accessible Description", accessibleObjectDescription);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_GetPropertyValue_Custom_Name_ReturnsExpected(Type type)
{
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
if (!control.SupportsUiaProviders)
{
return;
}
AccessibleObject controlAccessibleObject = control.AccessibilityObject;
control.Name = "Name1";
control.AccessibleName = "Test Name";
Assert.Equal("Test Name", ((BSTR)controlAccessibleObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_LegacyIAccessibleNamePropertyId)).ToStringAndFree());
Assert.Equal("Test Name", ((BSTR)controlAccessibleObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_NamePropertyId)).ToStringAndFree());
}
public static IEnumerable<object[]> ControlAccessibleObject_DefaultName_TestData()
{
// These controls have AccessibleName defined.
// MonthCalendar has "Month" view by default and returns current date as AccessibleName
var typeDefaultValues = new Dictionary<Type, string>
{
{ typeof(DataGridViewTextBoxEditingControl), SR.DataGridView_AccEditingControlAccName },
{ typeof(DateTimePicker), string.Empty },
{ typeof(PrintPreviewDialog), SR.PrintPreviewDialog_PrintPreview },
{ typeof(TextBox), string.Empty},
{ typeof(MaskedTextBox), string.Empty}
};
foreach (Type type in ReflectionHelper.GetPublicNotAbstractClasses<Control>())
{
yield return new object[]
{
type,
typeDefaultValues.TryGetValue(type, out string value) ? value : null
};
}
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_DefaultName_TestData))]
public void ControlAccessibleObject_GetPropertyValue_Default_Name_ReturnsExpected(Type type, string expectedName)
{
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
if (!control.SupportsUiaProviders)
{
return;
}
AccessibleObject controlAccessibleObject = control.AccessibilityObject;
if (expectedName is not null)
{
Assert.Equal(expectedName, ((BSTR)controlAccessibleObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_NamePropertyId)).ToStringAndFree());
}
else
{
Assert.Equal(VARIANT.Empty, controlAccessibleObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_NamePropertyId));
}
}
public static IEnumerable<object[]> ControlAccessibleObject_GetPropertyValue_ControlTypeProperty_ReturnsCorrectValue_TestData()
{
Array roles = Enum.GetValues(typeof(AccessibleRole));
foreach (AccessibleRole role in roles)
{
yield return new object[] { role };
}
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_GetPropertyValue_ControlTypeProperty_ReturnsCorrectValue_TestData))]
public void ControlAccessibleObject_GetPropertyValue_ControlTypeProperty_ReturnsCorrectValue(AccessibleRole role)
{
using Control control = new();
control.AccessibleRole = role;
UIA_CONTROLTYPE_ID actual = (UIA_CONTROLTYPE_ID)(int)control.AccessibilityObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_ControlTypePropertyId);
UIA_CONTROLTYPE_ID expected = AccessibleRoleControlTypeMap.GetControlType(role);
Assert.Equal(expected, actual);
// Check if the method returns an exist UIA_ControlTypeId
Assert.True(actual is >= UIA_CONTROLTYPE_ID.UIA_ButtonControlTypeId and <= UIA_CONTROLTYPE_ID.UIA_AppBarControlTypeId);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_FragmentRoot_IsNullOrOwnObject(Type type)
{
using NoAssertContext context = new();
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
Assert.False(control.IsHandleCreated);
Assert.True(control.AccessibilityObject is Control.ControlAccessibleObject);
IRawElementProviderFragment.Interface actual = (IRawElementProviderFragment.Interface)control.AccessibilityObject.FragmentRoot;
Assert.True(actual is null || actual == control.AccessibilityObject);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public unsafe void ControlAccessibleObject_FragmentRoot_IsToolStrip_IfControlIsUsedAsToolStripItem(Type type)
{
using NoAssertContext context = new();
using ToolStrip toolStrip = new();
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
using ToolStripControlHost host = new(control);
toolStrip.CreateControl();
control.CreateControl();
if (!CanBeAddedToToolStrip(control))
{
// A number of controls can't be added to ToolStrip. Double verify it is still the case, and exit.
Assert.Throws<ArgumentException>(() => toolStrip.Items.Add(host));
return;
}
toolStrip.Items.Add(host);
Assert.True(control.AccessibilityObject is Control.ControlAccessibleObject);
using ComScope<IRawElementProviderFragmentRoot> actual = new(null);
Assert.True(((IRawElementProviderFragment.Interface)control.AccessibilityObject).get_FragmentRoot(actual).Succeeded);
Assert.Equal(toolStrip.AccessibilityObject, ComHelpers.GetObjectForIUnknown(actual));
Assert.True(control.IsHandleCreated);
Assert.True(toolStrip.IsHandleCreated);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_FragmentNavigate_Parent_IsNull(Type type)
{
using NoAssertContext context = new();
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
Assert.True(control.AccessibilityObject is Control.ControlAccessibleObject);
IRawElementProviderFragment.Interface parent
= control.AccessibilityObject.FragmentNavigate(NavigateDirection.NavigateDirection_Parent);
Assert.True(parent is null);
Assert.False(control.IsHandleCreated);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_FragmentNavigate_Siblings_AreNull(Type type)
{
using NoAssertContext context = new();
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
Assert.True(control.AccessibilityObject is Control.ControlAccessibleObject);
IRawElementProviderFragment.Interface nextSibling
= control.AccessibilityObject.FragmentNavigate(NavigateDirection.NavigateDirection_NextSibling);
IRawElementProviderFragment.Interface previousSibling
= control.AccessibilityObject.FragmentNavigate(NavigateDirection.NavigateDirection_PreviousSibling);
Assert.True(nextSibling is null);
Assert.True(previousSibling is null);
Assert.False(control.IsHandleCreated);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_FragmentNavigate_ParentIsToolStrip_IfControlIsUsedAsToolStripItem(Type type)
{
using NoAssertContext noAssertContext = new();
using ToolStrip toolStrip = new() { Size = new Drawing.Size(1000, 25) };
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
using ToolStripControlHost host = new(control);
toolStrip.CreateControl();
control.CreateControl();
if (!CanBeAddedToToolStrip(control))
{
// A number of controls can't be added to ToolStrip. Double verify it is still the case, and exit.
Assert.Throws<ArgumentException>(() => toolStrip.Items.Add(host));
return;
}
toolStrip.Items.Add(host);
host.TestAccessor().Dynamic._parent = toolStrip;
host.SetPlacement(ToolStripItemPlacement.Main);
Assert.True(control.AccessibilityObject is Control.ControlAccessibleObject);
IRawElementProviderFragment.Interface actual = control.AccessibilityObject.FragmentNavigate(NavigateDirection.NavigateDirection_Parent);
AccessibleObject expected = toolStrip.AccessibilityObject;
Assert.Equal(expected, actual);
Assert.True(control.IsHandleCreated);
Assert.True(toolStrip.IsHandleCreated);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_FragmentNavigate_NextSibling_IsNextItem_IfControlIsUsedAsToolStripItem(Type type)
{
using NoAssertContext noAssertContext = new();
using ToolStrip toolStrip = new() { Size = new Drawing.Size(1000, 25) };
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
using ToolStripControlHost host = new(control);
using ToolStripLabel label = new();
using ToolStripButton button = new();
toolStrip.CreateControl();
control.CreateControl();
toolStrip.Items.Add(label);
if (!CanBeAddedToToolStrip(control))
{
// A number of controls can't be added to ToolStrip. Double verify it is still the case, and exit.
Assert.Throws<ArgumentException>(() => toolStrip.Items.Add(host));
return;
}
toolStrip.Items.Add(host);
toolStrip.Items.Add(button);
host.TestAccessor().Dynamic._parent = toolStrip;
host.SetPlacement(ToolStripItemPlacement.Main);
Assert.True(control.AccessibilityObject is Control.ControlAccessibleObject);
IRawElementProviderFragment.Interface actual = control.AccessibilityObject.FragmentNavigate(NavigateDirection.NavigateDirection_NextSibling);
AccessibleObject expected = button.AccessibilityObject;
Assert.Equal(expected, actual);
Assert.True(control.IsHandleCreated);
Assert.True(toolStrip.IsHandleCreated);
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_FragmentNavigate_PreviousSibling_IsPreviousItem_IfControlIsUsedAsToolStripItem(Type type)
{
using NoAssertContext noAssertContext = new();
using ToolStrip toolStrip = new() { Size = new Drawing.Size(1000, 25) };
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
using ToolStripControlHost host = new(control);
using ToolStripLabel label = new();
toolStrip.CreateControl();
control.CreateControl();
toolStrip.Items.Add(label);
if (!CanBeAddedToToolStrip(control))
{
// A number of controls can't be added to ToolStrip. Double verify it is still the case, and exit.
Assert.Throws<ArgumentException>(() => toolStrip.Items.Add(host));
return;
}
toolStrip.Items.Add(host);
host.TestAccessor().Dynamic._parent = toolStrip;
host.SetPlacement(ToolStripItemPlacement.Main);
Assert.True(control.AccessibilityObject is Control.ControlAccessibleObject);
IRawElementProviderFragment.Interface actual = control.AccessibilityObject.FragmentNavigate(NavigateDirection.NavigateDirection_PreviousSibling);
AccessibleObject expected = label.AccessibilityObject;
Assert.Equal(expected, actual);
Assert.True(control.IsHandleCreated);
Assert.True(toolStrip.IsHandleCreated);
}
[WinFormsFact]
public void ControlAccessibleObject_GetPropertyValue_AutomationId_ReturnsExpected()
{
using Control ownerControl = new() { Name = "test name" };
string expected = ownerControl.Name;
VARIANT actual = ownerControl.AccessibilityObject.GetPropertyValue(UIA_PROPERTY_ID.UIA_AutomationIdPropertyId);
Assert.Equal(expected, ((BSTR)actual).ToStringAndFree());
Assert.False(ownerControl.IsHandleCreated);
}
[WinFormsFact]
public void ControlAccessibleObject_DoesNotRootControl()
{
Control.ControlAccessibleObject accessibleObject = CreateAndDisposeControl();
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true);
Assert.False(accessibleObject.TryGetOwnerAs(out Control _));
[MethodImpl(MethodImplOptions.NoInlining)]
static Control.ControlAccessibleObject CreateAndDisposeControl()
{
using Control control = new();
var accessibleObject = (Control.ControlAccessibleObject)control.AccessibilityObject;
Assert.NotNull(accessibleObject);
Assert.True(accessibleObject.TryGetOwnerAs(out Control _));
return accessibleObject;
}
}
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_TestData))]
public void ControlAccessibleObject_DoesNotRootControls_AllPublicControl(Type type)
{
Control.ControlAccessibleObject accessibleObject = CreateAndDisposeControl(type);
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true);
Assert.False(accessibleObject.TryGetOwnerAs(out Control _));
[MethodImpl(MethodImplOptions.NoInlining)]
static Control.ControlAccessibleObject CreateAndDisposeControl(Type type)
{
using Control control = ReflectionHelper.InvokePublicConstructor<Control>(type);
var accessibleObject = (Control.ControlAccessibleObject)control.AccessibilityObject;
Assert.NotNull(accessibleObject);
Assert.True(accessibleObject.TryGetOwnerAs(out Control _));
return accessibleObject;
}
}
public static IEnumerable<object[]> ControlAccessibleObject_Name_KeyboardShortcut_TestData()
{
// Controls that have UseMnemonic property.
yield return new object[] { typeof(Label) };
yield return new object[] { typeof(LinkLabel) };
yield return new object[] { typeof(Button) };
yield return new object[] { typeof(RadioButton) };
yield return new object[] { typeof(CheckBox) };
}
// Unit test for https://github.com/dotnet/winforms/issues/9296
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_Name_KeyboardShortcut_TestData))]
public void ControlAccessibleObject_Shortcut_Invoke_ReturnsExpected(Type type)
{
using var control = ReflectionHelper.InvokePublicConstructor<Control>(type);
control.Text = "&control";
control.TabIndex = 1;
var accessibleObject = control.AccessibilityObject;
Assert.Equal("Alt+c", accessibleObject.KeyboardShortcut);
control.GetType().GetProperty(nameof(Label.UseMnemonic)).SetValue(control, false);
Assert.Null(accessibleObject.KeyboardShortcut);
if (control is not Label)
{
using Form form = new();
using Label label = new();
label.Text = "&label";
label.TabIndex = 0;
form.Controls.Add(label);
form.Controls.Add(control);
form.Show();
Assert.Equal("Alt+l", accessibleObject.KeyboardShortcut);
label.UseMnemonic = false;
Assert.Null(accessibleObject.KeyboardShortcut);
control.GetType().GetProperty(nameof(Label.UseMnemonic)).SetValue(control, true);
Assert.Equal("Alt+c", accessibleObject.KeyboardShortcut);
control.Text = "control";
label.UseMnemonic = true;
Assert.Equal("Alt+l", accessibleObject.KeyboardShortcut);
}
}
// Unit test for https://github.com/dotnet/winforms/issues/9296
[WinFormsTheory]
[MemberData(nameof(ControlAccessibleObject_Name_KeyboardShortcut_TestData))]
public void ControlAccessibleObject_Name_Invoke_ReturnsExpected(Type type)
{
using var control = ReflectionHelper.InvokePublicConstructor<Control>(type);
control.Text = "&control";
var accessibleObject = control.AccessibilityObject;
Assert.Equal("control", accessibleObject.Name);
control.GetType().GetProperty(nameof(Label.UseMnemonic)).SetValue(control, false);
Assert.Equal("&control", accessibleObject.Name);
accessibleObject.Name = "CustomName";
Assert.Equal("CustomName", accessibleObject.Name);
control.GetType().GetProperty(nameof(Label.UseMnemonic)).SetValue(control, true);
Assert.Equal("CustomName", accessibleObject.Name);
Assert.False(control.IsHandleCreated);
}
// ContextMenuStrip, From, ToolStripDropDown, ToolStripDropDownMenu
// are Top level controls that can't be added to a ToolStrip.
// A TabPage can be added to a TabControl only (see TabPage.AssignParent method).
private static bool CanBeAddedToToolStrip(Control control)
=> control is not (ContextMenuStrip
or Form
or ToolStripDropDown
or ToolStripDropDownMenu
or TabPage);
private class AutomationLiveRegionControl : Control, IAutomationLiveRegion
{
public AutomationLiveSetting LiveSetting { get; set; }
}
private class SubControl : Control
{
public new void SetStyle(ControlStyles flag, bool value) => base.SetStyle(flag, value);
}
}
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