/// <summary>
/// Called to inform the list box that one of its items was clicked.
/// </summary>
/// <param name="container">The item container that was clicked.</param>
internal void HandleItemClicked(ListBoxItem container)
{
switch (SelectionMode)
{
case SelectionMode.Single:
HandleItemClickedSingle(container);
break;
case SelectionMode.Multiple:
HandleItemClickedMultiple(container);
break;
}
}
/// <summary>
/// Handles clicking on an item when the list box is in single selection mode.
/// </summary>
/// <param name="item">The item that was clicked.</param>
private void HandleItemClickedSingle(ListBoxItem item)
{
BeginChangeSelection();
if (GetIsSelected(item))
{
if ((Keyboard.Modifiers & ModifierKeys.Control) == ModifierKeys.Control)
{
UnselectContainer(item);
}
}
else
{
UnselectAllItems();
SelectContainer(item);
}
EndChangeSelection();
}
/// <summary>
/// Handles clicking on an item when the list box is in multiple selection mode.
/// </summary>
/// <param name="item">The item that was clicked.</param>
private void HandleItemClickedMultiple(ListBoxItem item)
{
var selected = GetIsSelected(item);
if (selected)
{
UnselectContainer(item);
}
else
{
SelectContainer(item);
}
}
/// <summary>
/// Selects the specified item and scrolls it into view.
/// </summary>
private void HandleItemClickedAndScrollIntoView(ListBoxItem item, Boolean buffer = true)
{
HandleItemClicked(item);
ItemsControlUtil.ScrollItemIntoView<ListBoxItem>(this, PART_ScrollViewer, item, buffer);
}