protected override void OnModelPropertyChanged(string propertyName)
{
if (propertyName == "Presentation")
{
if (myPresentation == Model.Presentation)
{
return;
}
if (myPresentation != null)
{
myPresentation.GetModule <INodeMaskModule>().CollectionChanged -= OnMasksChanged;
myPresentation.GraphVisibilityChanged -= OnGraphVisibilityChanged;
}
myPresentation = Model.Presentation;
Filter = null;
if (myPresentation != null)
{
myPresentation.GetModule <INodeMaskModule>().CollectionChanged += OnMasksChanged;
myPresentation.GraphVisibilityChanged += OnGraphVisibilityChanged;
OnGraphVisibilityChanged(null, EventArgs.Empty);
}
myPreviewNodes = null;
PreviewNodes.Refresh();
}
}
protected override void OnModelPropertyChanged(string propertyName)
{
if (propertyName == "Presentation")
{
if (myPresentation == Model.Presentation)
{
return;
}
if (myTransformationsObserver != null)
{
myTransformationsObserver.ModuleChanged -= OnTransformationsChanged;
myTransformationsObserver.Dispose();
}
myPresentation = Model.Presentation;
// first build tree - master for preview
BuildTree();
// rebuild preview
myPreviewNodes = null;
if (Filter == null)
{
PreviewNodes.Refresh();
}
else
{
Filter = null;
}
// register for updates only AFTER tree is built up completely to avoid getting notified by the built up process
var transformationModule = Model.Presentation.GetModule <ITransformationModule>();
myTransformationsObserver = transformationModule.CreateObserver();
myTransformationsObserver.ModuleChanged += OnTransformationsChanged;
}
}
private void OnMasksChanged(object sender, NotifyCollectionChangedEventArgs e)
{
PreviewNodes.Refresh();
}
private void OnTransformationsChanged(object sender, EventArgs e)
{
BuildTree();
PreviewNodes.Refresh();
}