Limit node reordering depth

[Blagojce]

Hi,

Is it possible that I can limit the depth of the subnodes added when dragging a node? For example not to be able to create second level nodes, just root nodes and children to them.

Thanks,
Blagojce

[Alex Gyoshev]

Hi Blagojce,

Attach an event handler to the drag event and use the setStatusClass to set the class to k-denied, like so:

$("#treeview-left").data("kendoTreeView").bind("drag", function(e) {
    if (e.statusClass != "add") { // the operation is adding, not reordering
        return;
    }

    var isValid = true;
    // place any custom validation regarding the reordering, using e.sourceNode and e.dropTarget here
    if (!isValid) {
        e.setStatusClass("k-denied"); // show the "denied" status, that does not allow node drops
    }
});

This will provide an intuitive drag clue (showing that the node cannot be dropped there) and an animation when the node is incorrectly dropped.

All the best,
Alex Gyoshev
the Telerik team