private void Items_ItemsChanged(RadItemCollection changed, RadItem target, ItemsChangeOperation operation)
{
RadComboBoxItem comboItem = target as RadComboBoxItem;
if (comboItem == null)
{
return;
}
switch (operation)
{
case ItemsChangeOperation.Removed:
if (this.listBoxElement.SelectedItem != null &&
this.listBoxElement.SelectedItem.Equals(comboItem))
{
this.listBoxElement.SelectedIndex = -1;
}
comboItem.OwnerElement = null;
break;
case ItemsChangeOperation.Cleared:
this.listBoxElement.SelectedIndex = -1;
break;
case ItemsChangeOperation.Setting:
if (this.listBoxElement.SelectedItem != null &&
this.listBoxElement.SelectedItem.Equals(comboItem))
{
this.listBoxElement.SelectedIndex = -1;
}
comboItem.OwnerElement = null;
break;
case ItemsChangeOperation.Inserted:
case ItemsChangeOperation.Set:
if (comboItem != null)
{
comboItem.OwnerElement = this.OwnerComboItem;
}
break;
}
}
internal void SetActiveItem(RadComboBoxItem item)
{
if (this.ActiveItem == item)
{
if (this.ActiveItem == item)
{
return;
}
}
if (this.ActiveItem != null)
{
this.ActiveItem.Active = false;
}
this.ActiveItem = item;
if (this.ActiveItem != null)
{
this.ActiveItem.Active = true;
}
}