/// <summary>
/// Callback for when the associated UcNodeViewer's IsSelected property changes.
/// </summary>
/// <param name="args">The change arguments.</param>
private void OnNodeViewerIsSelectedChanged(PropertyChangedCallbackArgs args)
{
bool newValue = (bool)args.NewValue;
if (!newValue)
{
// Deselect this IO handle if node is deselected.
this.IsSelected = false;
}
}
private void OnDefferingPropertyChangeOcurred(PropertyChangedCallbackArgs args)
{
if (this.deferringPropertyChangeCallback == null || this.deferringPropertyChangeCallback(args))
{
args.Handle.Dispose();
this.deferringPropertyChangeHandle = null;
this.deferringPropertyChangeCallback = null;
this.InitializeAfterDeferrence();
}
}
/// <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;
}
}
}
