/// <summary>
/// When we assign the target control we set up event handlers.
/// </summary>
/// <param name="d"></param>
/// <param name="e"></param>
private static void TargetControl_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.OldValue != e.NewValue)
{
TextBoxAutoComplete me = d as TextBoxAutoComplete;
TextBox oldv = e.OldValue as TextBox;
TextBox newv = e.NewValue as TextBox;
if (oldv != null)
{
oldv.LostFocus -= new RoutedEventHandler(me.TargetControl_LostFocus);
oldv.GotFocus -= new RoutedEventHandler(me.TargetControl_GotFocus);
oldv.KeyUp -= new KeyEventHandler(me.TargetControl_KeyUp);
oldv.PreviewKeyUp -= new KeyEventHandler(me.TargetControl_PreviewKeyUp);
oldv.PreviewKeyDown -= new KeyEventHandler(me.TargetControl_PreviewKeyDown);
}
if (newv != null)
{
me.popup.PlacementTarget = newv;
newv.LostFocus += new RoutedEventHandler(me.TargetControl_LostFocus);
newv.GotFocus += new RoutedEventHandler(me.TargetControl_GotFocus);
newv.KeyUp += new KeyEventHandler(me.TargetControl_KeyUp);
newv.PreviewKeyUp += new KeyEventHandler(me.TargetControl_PreviewKeyUp);
newv.PreviewKeyDown += new KeyEventHandler(me.TargetControl_PreviewKeyDown);
}
}
}
private static void SelectedListBoxValue_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TextBoxAutoComplete me = d as TextBoxAutoComplete;
if (e.NewValue != null)
{
if (!me.popup.IsOpen)
{
var result = me.odp.SearchByKey(e.NewValue);
result.Results.ToList().ForEach(item => me.searchResults.Add(item));
me.SetTextAndHide();
}
else
{
me.TargetControl.Text = String.IsNullOrEmpty(me.DisplayMemberPath) ?
me.listBox.SelectedItem.ToString() :
me.listBox.SelectedItem.GetType().GetProperty(
me.DisplayMemberPath).GetValue(me.listBox.SelectedItem, null).ToString();
}
}
}
private static void SearchDataProvider_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TextBoxAutoComplete me = d as TextBoxAutoComplete;
me.odp = e.NewValue as ISearchDataProvider;
}