/// <summary>
/// Called when the container is being attached to the parent ItemsControl
/// </summary>
/// <param name="element"></param>
/// <param name="item"></param>
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
RibbonGalleryItem galleryItem = (RibbonGalleryItem)element;
galleryItem.RibbonGalleryCategory = this;
RibbonGallery gallery = RibbonGallery;
if (gallery != null)
{
object selectedItem = gallery.SelectedItem;
if (selectedItem != null)
{
// Set IsSelected to true on GalleryItems that match the SelectedItem
if (RibbonGallery.VerifyEqual(item, selectedItem))
{
galleryItem.IsSelected = true;
}
}
else if (galleryItem.IsSelected)
{
// If a GalleryItem is marked IsSelected true then synchronize SelectedItem with it
gallery.SelectedItem = item;
}
else
{
object selectedValue = gallery.SelectedValue;
if (selectedValue != null)
{
// Set SelectedItem if the item's value matches the SelectedValue
object itemValue = gallery.GetSelectableValueFromItem(item);
if (RibbonGallery.VerifyEqual(selectedValue, itemValue))
{
galleryItem.IsSelected = true;
}
}
}
}
galleryItem.SyncKeyTipAndContent();
base.PrepareContainerForItemOverride(element, item);
}
