How to collapse "other" nodes

[Ed Staffin]

Hi,
Since there is no documented "IsDecendantOf" function on the client side, I was wondering if anyone has figured out how to collapse all other branches of the tree when expanding a particular node in javascript.
For example, if I have a tree as follows
    A
        B
        C
            D
    E
        F
            G
I want that when they expand C, E collapses and if they expand F I would want A to collapse.
Basically, if they expand a branch, I want all OTHER branches to collapse.
If anyone has done this and is willing to share how they did it I would be much obliged.
Thanks ... Ed

[Bozhidar]

Hello Ed Staffin,

Here is a sample funcion you can attach to the OnClientNodeExpanding event:

function clientNodeExpanding(sender, args){
    var nodeToBeExpanded = args.get_node();
    var parent = nodeToBeExpanded.get_parent();
    for (var i = 0; i < parent.get_nodes().get_count(); i++) {
        parent.get_nodes().getNode(i).collapse();
    }
    for (var i = 0; i < nodeToBeExpanded.get_nodes().get_count(); i++) {
        nodeToBeExpanded.get_nodes().getNode(i).collapse();
    }
}

All the best,
Bozhidar
the Telerik team