/// <summary>
/// Callback for when the assiciated UcTreeDesigner's ConnectingIOHandle property changes.
/// </summary>
/// <param name="args">The change arguments.</param>
private void OnTreeDesignerConnectingIOHandleChanged(PropertyChangedCallbackArgs args)
{
UcIOHandle newValue = args.NewValue as UcIOHandle;
// If user is trying to connect another IO handle, provide information about
// whether this handle is compatible with its data by setting the IsConnectionCompatible
// property.
if (newValue != this)
{
if (newValue != null && this.IsInput != newValue.IsInput && this.NodeViewer != newValue.NodeViewer)
{
this.IsConnectionCompatible = this.DataType == null || newValue.DataType == null ||
(!this.IsInput && this.DataType.CanConvertTo(newValue.DataType)) || (this.IsInput && newValue.DataType.CanConvertTo(this.DataType));
}
else
{
this.IsConnectionCompatible = null;
}
}
}
/// <summary>
/// Property Changed Callback method of the IsSelected Dependency Property.
/// </summary>
/// <param name="sender">The instance of the class that had the IsSelected property changed.</param>
/// <param name="e">The <see cref="System.Windows.DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void OnIsSelectedChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
UcIOHandle subject = (UcIOHandle)sender;
bool newValue = (bool)e.NewValue;
bool oldValue = (bool)e.OldValue;
if (newValue)
{
if (subject.NodeViewer != null)
{
subject.NodeViewer.IsSelected = true;
foreach (var other in subject.NodeViewer.IoHandles)
{
if (other != subject)
{
other.IsSelected = false;
}
}
}
}
}