/// <summary>
/// Called when the NodeModel's CachedValue property is updated
/// </summary>
private void CachedValueChanged()
{
Dispatcher.BeginInvoke(new Action(delegate
{
// There is no preview control or the preview control is
// currently in transition state (it can come back to handle
// the new data later on when it is ready).
if ((previewControl == null))
{
return;
}
// Enqueue an update of the preview control once it has completed its
// transition
if (previewControl.IsInTransition)
{
previewControl.EnqueueBindToDataSource(ViewModel.NodeModel.CachedValue);
return;
}
if (previewControl.IsHidden) // The preview control is hidden.
{
// Invalidate the previously bound data, if any.
if (previewControl.IsDataBound)
{
previewControl.BindToDataSource(null);
}
return;
}
previewControl.BindToDataSource(ViewModel.NodeModel.CachedValue);
}));
}