public void ExpandAllParents(BaseTreeNode treeNode)
{
while (treeNode.Parent != null)
{
ListView.Expand(treeNode.Parent);
treeNode = treeNode.Parent;
}
}
public static void onCreateFolder(Object sender, ClickEventArgs e)
{
NlmTreeListView listView = e.ListView;
// Calculate unique name in current level.
IEnumerable <FolderTreeNode> folderNodes = listView.NodeControl.Query.FolderNodes;
String folderName = "Folder";
Int32 index = 1;
while (folderNodes.Any(x => x.Name == folderName + index.ToString("000")))
{
index += 1;
}
folderName += index.ToString("000");
// Create folder node.
FolderTreeNode folderTreeNode = new FolderTreeNode(folderName);
// Get parent node.
BaseTreeNode parentTreeNode = null;
if (listView.SelectedObjects.Count > 0)
{
BaseTreeNode treeNode = listView.SelectedObjects[0] as BaseTreeNode;
if (treeNode is FolderTreeNode)
{
parentTreeNode = treeNode;
}
if (treeNode is LayerTreeNode)
{
parentTreeNode = treeNode.Parent;
}
}
// Add folder to listview, ensure is visible by expanding parents.
listView.AddObject(folderTreeNode, parentTreeNode);
if (parentTreeNode != null)
{
listView.Expand(parentTreeNode);
}
// Scroll to new item.
Int32 parentIndex = listView.IndexOf(folderTreeNode);
if (parentIndex != -1)
{
listView.EnsureVisible(parentIndex);
}
// Sort, select, and begin edit.
listView.Sort(listView.NlmColumns.NameColumn, SortOrder.Ascending);
listView.SelectedObjects = new List <Object> {
folderTreeNode
};
listView.EditModel(folderTreeNode);
}
private static void onCreateLayer(Object sender, ClickEventArgs e, Boolean addSelection)
{
NlmTreeListView listView = e.ListView;
listView.NodeControl.MaxEvents.LayerEvents.LayerCreated.UnregisterNotification();
IILayer layer = MaxLayers.CreateLayer(true, addSelection);
UIntPtr handle = MaxAnimatable.GetHandleByAnim(layer);
LayerTreeNode layerTreeNode = new LayerTreeNode(handle, listView.NodeControl.HandleMap);
// Get parent node.
BaseTreeNode parentTreeNode = null;
if (listView.SelectedObjects.Count > 0)
{
BaseTreeNode treeNode = listView.SelectedObjects[0] as BaseTreeNode;
if (treeNode is FolderTreeNode)
{
parentTreeNode = treeNode;
}
if (treeNode is LayerTreeNode)
{
parentTreeNode = treeNode.Parent;
}
}
// Add folder to listview, ensure is visible by expanding parents.
listView.AddObject(layerTreeNode, parentTreeNode);
if (parentTreeNode != null)
{
listView.Expand(parentTreeNode);
}
// Scroll to new item.
Int32 parentIndex = listView.IndexOf(layerTreeNode);
if (parentIndex != -1)
{
listView.EnsureVisible(parentIndex);
}
// Sort, select
listView.Sort(listView.NlmColumns.NameColumn, SortOrder.Ascending);
listView.SelectedObjects = new List <Object> {
layerTreeNode
};
// Focus on the listview to ensure text entry goes to the edit box, and begin edit.
listView.Focus();
listView.EditModel(layerTreeNode);
// Register notification.
listView.NodeControl.MaxEvents.LayerEvents.LayerCreated.RegisterNotification();
}
// Filtering does not take into consideration nodes that are not currently visible.
// This ensures that all nodes are visible that match the search string.
private void ExpandParentsOfMatchedChildren(String text)
{
HashSet <BaseTreeNode> NodesToExpand = new HashSet <BaseTreeNode>();
foreach (BaseTreeNode treeNode in ListView.Roots)
{
SearchChildrenAndExpandByName(treeNode, text, NodesToExpand);
}
if (NodesToExpand.Count > 0)
{
foreach (BaseTreeNode nodeToExpand in NodesToExpand.ToList <BaseTreeNode>())
{
if (!ListView.IsExpanded(nodeToExpand))
{
ListView.Expand(nodeToExpand);
}
}
}
}
// Move nodes to new parent after a drag drop operation.
private void DragDropMoveNodes(BaseTreeNode target, IList dragNodes)
{
IList selection = ListView.SelectedObjects;
ListView.BeginUpdate();
MaxEvents.NodeEvents.Unregister();
IEnumerable <BaseTreeNode> dragNodesEnum = dragNodes.Cast <BaseTreeNode>();
// Are layers or folders being dropped on layers?
// If so, make the target the parent of the target.
if (dragNodesEnum.All(x => x is LayerTreeNode) && target is LayerTreeNode || dragNodesEnum.All(x => x is FolderTreeNode) && target is LayerTreeNode)
{
target = target.Parent;
}
// Are objects being dropped on objects?
// If so, make the target the parent of the target.
if (dragNodesEnum.All(x => x is ObjectTreeNode) && target is ObjectTreeNode)
{
target = target.Parent;
}
// Do we move to the root or move under a treeNode?
// If the target is null, we have to move to root.
if (target != null && target is LayerTreeNode)
{
// Move the treenodes in the listView.
NodeParentEngine.MoveTreeNodes(dragNodes.Cast <BaseTreeNode>().ToList(), target);
//TODO:
//IEnumerable<UIntPtr> handles = dragNodes.Cast<IEnumerable<BaseTreeNode>>()
// .Where(x => x is ObjectTreeNode)
// .Cast<ObjectTreeNode>()
// .Select(x => x.Handle);
// Move nodes to new layer in max.
List <UIntPtr> handles = new List <UIntPtr>();
foreach (BaseTreeNode child in dragNodes)
{
ObjectTreeNode objectChild = child as ObjectTreeNode;
if (objectChild != null)
{
handles.Add(objectChild.Handle);
}
}
IILayer layer = MaxAnimatable.GetAnimByHandle(((LayerTreeNode)target).Handle) as IILayer;
if (layer != null)
{
MaxNodes.MoveNodesToLayer(handles, layer);
}
}
else
{
NodeParentEngine.MoveTreeNodes(dragNodes.Cast <BaseTreeNode>().ToList(), target);
}
MaxEvents.NodeEvents.Register();
// Default after drop behaviour tries to select nodes based on itemIndex. As nodes have moved this does not work.
// Instead, return saved selection to SelectedObjects property, and make sure dropped Objects are visible.
if (!ListView.IsExpanded(target))
{
ListView.Expand(target);
}
ListView.Sort(ListView.NlmColumns.NameColumn, SortOrder.Ascending);
ListView.SelectedObjects = selection;
ListView.EndUpdate();
}
