private void OnDeleteCluster(ClusterTreeNode clusterNode)
{
// avoid many intermediate updates
myTransformationsObserver.ModuleChanged -= OnTransformationsChanged;
var operation = new ChangeClusterAssignment(myPresentation);
operation.Execute(t => t.HideCluster(clusterNode.Id));
// update tree
{
Root.Children.Remove(clusterNode);
if (clusterNode.Id == SelectedCluster)
{
SelectedCluster = null;
}
foreach (var treeNode in clusterNode.Children)
{
myNodeToClusterCache.Remove(treeNode.Id);
}
}
myTransformationsObserver.ModuleChanged += OnTransformationsChanged;
}
private void OnAddNodesToCluster()
{
// avoid many intermediate updates
myTransformationsObserver.ModuleChanged -= OnTransformationsChanged;
var nodes = PreviewNodes
.Cast <NodeWithCaption>()
.Select(n => n.Node.Id)
.ToList();
var operation = new ChangeClusterAssignment(myPresentation);
operation.Execute(t => t.AddToCluster(nodes, SelectedCluster));
// update tree
{
var clusterNode = Root.Children.Single(n => n.Id == SelectedCluster);
var captionModule = myPresentation.GetModule <ICaptionModule>();
var newTreeNodes = nodes
.Select(n => new ClusterTreeNode(myPresentation)
{
Parent = clusterNode,
Id = n,
Caption = captionModule.Get(n).DisplayText,
IsDropAllowed = false,
ShowId = TreeShowId
});
clusterNode.Children.AddRange(newTreeNodes);
// register for notifications after tree is built to avoid intermediate states getting notified
foreach (var node in newTreeNodes)
{
PropertyChangedEventManager.AddHandler(node, OnSelectionChanged, PropertySupport.ExtractPropertyName(() => node.IsSelected));
PropertyChangedEventManager.AddHandler(node, OnParentChanged, PropertySupport.ExtractPropertyName(() => node.Parent));
myNodeToClusterCache[node.Id] = clusterNode.Id;
}
}
Filter = null;
myTransformationsObserver.ModuleChanged += OnTransformationsChanged;
}