/// <summary>
/// When overridden in a derived class, undoes the effects of the
/// PrepareContainerForItemOverride method.
/// </summary>
/// <param name="element">The container element.</param>
/// <param name="item">The item.</param>
protected override void ClearContainerForItemOverride(DependencyObject element, object item)
{
LongListSelectorItem itemTuple = item as LongListSelectorItem;
if (itemTuple != null)
{
var result = ((FrameworkElement)element).GetFirstLogicalChildByType <ContentPresenter>(true);
var handler = Unlink;
if (result != null && handler != null)
{
handler(this, new LinkUnlinkEventArgs(result));
}
}
base.ClearContainerForItemOverride(element, item);
}
/// <summary>
/// Prepares the specified element to display the specified item.
/// </summary>
/// <param name="element">Element used to display the specified item.</param>
/// <param name="item">Specified item.</param>
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
DataTemplate template = null;
LongListSelectorItem itemTuple = item as LongListSelectorItem;
if (itemTuple != null)
{
switch (itemTuple.ItemType)
{
case LongListSelectorItemType.ListHeader:
template = this.ListHeaderTemplate;
break;
case LongListSelectorItemType.ListFooter:
template = this.ListFooterTemplate;
break;
case LongListSelectorItemType.GroupHeader:
template = this.GroupHeaderTemplate;
break;
case LongListSelectorItemType.GroupFooter:
template = this.GroupFooterTemplate;
break;
case LongListSelectorItemType.Item:
template = this.ItemTemplate;
break;
}
TemplatedListBoxItem listBoxItem = (TemplatedListBoxItem)element;
listBoxItem.Content = itemTuple.Item;
listBoxItem.Tuple = itemTuple;
listBoxItem.ContentTemplate = template;
var result = listBoxItem.GetFirstLogicalChildByType <ContentPresenter>(true);
var handler = Link;
if (result != null && handler != null)
{
handler(this, new LinkUnlinkEventArgs(result));
}
}
}
