public void ComboBoxItemAccessibleObject_Bounds_ReturnsCorrect_ForDifferentHeightItems(ComboBoxStyle comboBoxStyle, int itemIndex, Rectangle expectedRect)
{
using DifferentHeightComboBox comboBox = new DifferentHeightComboBox();
comboBox.DropDownStyle = comboBoxStyle;
comboBox.Items.AddRange(new[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" });
comboBox.CreateControl();
if (comboBoxStyle == ComboBoxStyle.Simple)
{
comboBox.Size = new Size(100, 400);
}
else
{
comboBox.Size = new Size(100, comboBox.Size.Height);
comboBox.DropDownHeight = 400;
comboBox.DroppedDown = true;
}
ComboBoxAccessibleObject comboBoxAccessibleObject = (ComboBoxAccessibleObject)comboBox.AccessibilityObject;
ComboBoxItemAccessibleObjectCollection itemsCollection = comboBoxAccessibleObject.ItemAccessibleObjects;
Entry itemEntry = comboBox.Items.InnerList[itemIndex];
ComboBoxItemAccessibleObject itemAccessibleObject = itemsCollection.GetComboBoxItemAccessibleObject(itemEntry);
Rectangle actual = itemAccessibleObject.Bounds;
Rectangle dropdownRect = comboBox.ChildListAccessibleObject.Bounds;
Assert.Equal(expectedRect, actual);
}
public void ComboBoxItemAccessibleObject_Bounds_ReturnsCorrect_IfComboBoxIsScrollable(ComboBoxStyle comboBoxStyle, int itemIndex, Point expectedPosition)
{
using ComboBox comboBox = new ComboBox();
comboBox.IntegralHeight = false;
comboBox.DropDownStyle = comboBoxStyle;
comboBox.Items.AddRange(new[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" });
comboBox.CreateControl();
if (comboBoxStyle == ComboBoxStyle.Simple)
{
comboBox.Size = new Size(100, 132);
}
else
{
comboBox.Size = new Size(100, comboBox.Size.Height);
comboBox.DropDownHeight = 105;
comboBox.DroppedDown = true;
}
ComboBoxAccessibleObject comboBoxAccessibleObject = (ComboBoxAccessibleObject)comboBox.AccessibilityObject;
ComboBoxItemAccessibleObjectCollection itemsCollection = comboBoxAccessibleObject.ItemAccessibleObjects;
Entry itemEntry = comboBox.Items.InnerList[itemIndex];
ComboBoxItemAccessibleObject itemAccessibleObject = itemsCollection.GetComboBoxItemAccessibleObject(itemEntry);
Rectangle actual = itemAccessibleObject.Bounds;
Rectangle dropdownRect = comboBox.ChildListAccessibleObject.Bounds;
// We get items rectangles from Windows
// It returns to us different expected widths values depending on a combobox drop-down style
int itemWidth = comboBoxStyle == ComboBoxStyle.Simple ? 79 : 81;
Assert.Equal(expectedPosition.X, actual.X);
Assert.Equal(expectedPosition.Y, actual.Y);
Assert.Equal(itemWidth, actual.Width); // All items are the same width
Assert.Equal(15, actual.Height); // All items are the same height
}
public void ComboBoxItemAccessibleObject_ScrollIntoView_DoNothing_IfControlIsNotEnabled(ComboBoxStyle comboBoxStyle)
{
using ComboBox comboBox = new ComboBox();
comboBox.IntegralHeight = false;
comboBox.DropDownStyle = comboBoxStyle;
comboBox.Enabled = false;
comboBox.Items.AddRange(new[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" });
comboBox.CreateControl();
if (comboBoxStyle == ComboBoxStyle.Simple)
{
comboBox.Size = new Size(100, 132);
}
else
{
comboBox.DropDownHeight = 107;
comboBox.DroppedDown = true;
}
ComboBoxAccessibleObject comboBoxAccessibleObject = (ComboBoxAccessibleObject)comboBox.AccessibilityObject;
ComboBoxItemAccessibleObjectCollection itemsCollection = comboBoxAccessibleObject.ItemAccessibleObjects;
Entry itemEntry = comboBox.Items.InnerList[10];
ComboBoxItemAccessibleObject itemAccessibleObject = itemsCollection.GetComboBoxItemAccessibleObject(itemEntry);
itemAccessibleObject.ScrollIntoView();
int actual = unchecked ((int)(long)User32.SendMessageW(comboBox, (User32.WM)User32.CB.GETTOPINDEX));
Assert.Equal(0, actual); // ScrollIntoView didn't scroll to the tested item because the combobox is disabled
}
public ObjectCollection(ComboBox owner)
{
_owner = owner;
if (_owner.AccessibilityObject is null)
{
throw new ArgumentException(nameof(owner));
}
_ownerComboBoxAccessibleObject = (ComboBoxAccessibleObject)_owner.AccessibilityObject;
}
public void ComboBoxItemAccessibleObject_GetPropertyValue_ScrollItemPattern_IsAvailable()
{
using ComboBox comboBox = new ComboBox();
comboBox.Items.AddRange(new[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" });
comboBox.CreateControl();
ComboBoxAccessibleObject comboBoxAccessibleObject = (ComboBoxAccessibleObject)comboBox.AccessibilityObject;
ComboBoxItemAccessibleObjectCollection itemsCollection = comboBoxAccessibleObject.ItemAccessibleObjects;
// Check that all items support ScrollItemPattern
foreach (Entry itemEntry in comboBox.Items.InnerList)
{
ComboBoxItemAccessibleObject itemAccessibleObject = itemsCollection.GetComboBoxItemAccessibleObject(itemEntry);
Assert.True((bool)itemAccessibleObject.GetPropertyValue(UiaCore.UIA.IsScrollItemPatternAvailablePropertyId));
}
}
public void ComboBoxItemAccessibleObject_IsPatternSupported_ReturnsTrue_ForScrollItemPattern()
{
using ComboBox comboBox = new ComboBox();
comboBox.Items.AddRange(new[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" });
comboBox.CreateControl();
ComboBoxAccessibleObject comboBoxAccessibleObject = (ComboBoxAccessibleObject)comboBox.AccessibilityObject;
ComboBoxItemAccessibleObjectCollection itemsCollection = comboBoxAccessibleObject.ItemAccessibleObjects;
// Check that all items support ScrollItemPattern
foreach (Entry itemEntry in comboBox.Items.InnerList)
{
ComboBoxItemAccessibleObject itemAccessibleObject = itemsCollection.GetComboBoxItemAccessibleObject(itemEntry);
Assert.True(itemAccessibleObject.IsPatternSupported(UiaCore.UIA.ScrollItemPatternId));
}
}
public void ComboBoxItemAccessibleObject_ScrollIntoView_EnsureVisible(ComboBoxStyle comboBoxStyle, bool scrollingDown, int itemIndex, int itemsCount)
{
using ComboBox comboBox = new ComboBox();
comboBox.IntegralHeight = false;
comboBox.DropDownStyle = comboBoxStyle;
comboBox.CreateControl();
for (int i = 0; i < itemsCount; i++)
{
comboBox.Items.Add(i);
}
if (comboBoxStyle == ComboBoxStyle.Simple)
{
comboBox.Size = new Size(100, 132);
}
else
{
comboBox.DropDownHeight = 107;
comboBox.DroppedDown = true;
}
ComboBoxAccessibleObject comboBoxAccessibleObject = (ComboBoxAccessibleObject)comboBox.AccessibilityObject;
ComboBoxItemAccessibleObjectCollection itemsCollection = comboBoxAccessibleObject.ItemAccessibleObjects;
Entry itemEntry = comboBox.Items.InnerList[itemIndex];
ComboBoxItemAccessibleObject itemAccessibleObject = itemsCollection.GetComboBoxItemAccessibleObject(itemEntry);
int expected;
Rectangle dropDownRect = comboBox.ChildListAccessibleObject.Bounds;
int visibleItemsCount = (int)Math.Ceiling((double)dropDownRect.Height / comboBox.ItemHeight);
// Get an index of the first item that is visible if dropdown is scrolled to the bottom
int lastFirstVisible = itemsCount - visibleItemsCount;
if (scrollingDown)
{
if (dropDownRect.IntersectsWith(itemAccessibleObject.Bounds))
{
// ScrollIntoView method shouldn't scroll to the item because it is already visible
expected = 0;
}
else
{
// ScrollIntoView method should scroll to the item or
// the first item that is visible if dropdown is scrolled to the bottom
expected = itemIndex > lastFirstVisible ? lastFirstVisible : itemIndex;
}
}
else
{
// Scroll to the bottom and test the method when scrolling up
User32.SendMessageW(comboBox, (User32.WM)User32.CB.SETTOPINDEX, (IntPtr)(itemsCount - 1));
if (dropDownRect.IntersectsWith(itemAccessibleObject.Bounds))
{
// ScrollIntoView method shouldn't scroll to the item because it is already visible
expected = lastFirstVisible;
}
else
{
// ScrollIntoView method should scroll to the item
expected = itemIndex;
}
}
itemAccessibleObject.ScrollIntoView();
int actual = unchecked ((int)(long)User32.SendMessageW(comboBox, (User32.WM)User32.CB.GETTOPINDEX));
Assert.Equal(expected, actual);
}