/// <summary>
/// Overrides the SelectionAdapter template part get method to inject
/// the OverriddenSelectionAdapter type for Selector objects.
/// </summary>
/// <returns>Returns a new ISelectionAdapter instance or null.</returns>
protected override ISelectionAdapter GetSelectionAdapterPart()
{
GetSelectionAdapterActions.DoPreTest();
Selector selector = GetTemplateChild("Selector") as Selector;
ISelectionAdapter result = selector != null ? new OverriddenSelectionAdapter(selector) : base.GetSelectionAdapterPart();
GetSelectionAdapterActions.DoTest();
return(result);
}
protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
{
base.OnAttachedToVisualTree(e);
TablesListBox = this.FindControl <ListBox>("TablesListBox");
SelectionAdapter = new SelectingItemsControlSelectionAdapter(TablesListBox);
DispatcherTimer.RunOnce(() =>
{
var searchTextBox = this.FindControl <TextBox>("SearchTextBox");
searchTextBox?.Focus();
searchTextBox?.SelectAll();
}, TimeSpan.FromMilliseconds(1));
}
/// <summary>
/// Attempts to return an ISelectionAdapter wrapper for a specified object.
/// </summary>
/// <param name="value">The object value.</param>
/// <returns>Returns an IItemsSelector wrapping the value.</returns>
/// <remarks>
/// The specified object will be returned if it implements
/// ISelectionAdapter. If the specified object can be placed in a known
/// implementation of ISelectionAdapter, one containing the specified
/// object will be returned. Otherwise null will be returned.
///
/// Custom adapters can be added by deriving a new control from
/// AutoCompleteBox and overriding the TryGetSelectionAdapter method.</remarks>
protected virtual ISelectionAdapter TryGetSelectionAdapter(object value)
{
// Check if it is already an IItemsSelector
ISelectionAdapter asAdapter = value as ISelectionAdapter;
if (asAdapter != null)
{
return(asAdapter);
}
// Built in support for wrapping a Selector control
Selector asSelector = value as Selector;
if (asSelector != null)
{
return(new SelectorSelectionAdapter(asSelector));
}
// TODO: PLANNING: Consider an Attribute to expose extensibility
return(null);
}