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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 Windows.Win32.System.Variant;
using Windows.Win32.UI.Accessibility;
namespace System.Windows.Forms;
public partial class Button
{
internal class ButtonAccessibleObject(Button owner) : ButtonBaseAccessibleObject(owner)
{
internal override VARIANT GetPropertyValue(UIA_PROPERTY_ID propertyID) => propertyID switch
{
UIA_PROPERTY_ID.UIA_ControlTypePropertyId
// If we don't set a default role for Button and ButtonBase accessible objects
// it will be retrieved from Windows.
// And we don't have a 100% guarantee it will be correct, hence set it ourselves.
=> this.TryGetOwnerAs(out Control? owner) && owner.AccessibleRole == AccessibleRole.Default
? (VARIANT)(int)UIA_CONTROLTYPE_ID.UIA_ButtonControlTypeId
: base.GetPropertyValue(propertyID),
UIA_PROPERTY_ID.UIA_HasKeyboardFocusPropertyId => (VARIANT)(this.TryGetOwnerAs(out Control? owner) && owner.Focused),
UIA_PROPERTY_ID.UIA_IsKeyboardFocusablePropertyId
=>
// This is necessary for compatibility with MSAA proxy:
// IsKeyboardFocusable = true regardless the control is enabled/disabled.
VARIANT.True,
_ => base.GetPropertyValue(propertyID)
};
}
}
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