[Solved] SingleExpandPath and OnClientNodeCollapsed

[Cory Isakson]

I am trying to use SingleExpandPath and OnClientNodeCollapsed on a Prometheus TreeView.  When a node opens the OnClientNodeCollapsed is not firing on the node that is auto closed.  Is there a way to have the SingleExpandPath functionality fire OnClientNodeCollapsed when it automatically closes a node?

Thanks!

[Veselin Vasilev]

Hello Cory Isakson,

You are right - this is a problem in the treeview.
We will do our best to fix it for the official release next week.

In the meantime you can use the following workaround:

<telerik:RadTreeView ID="RadTreeView1"
       OnClientNodeExpanded="onClientNodeExpanded"
       runat="server">

<script type="text/javascript">
function onClientNodeExpanded(sender, eventArgs)
{
    var node = eventArgs.get_node();
    //close all nodes that are not parents of the expanded node
    collapseOtherNodes(node);
}

function collapseOtherNodes(node)
{
    //this array will hold all the parents of the node and the node itself
    var parents = new Array();
    parents[0] = node;
    var i = 1;
    var tree = node.get_treeView();

    while (node.get_parent() != tree)
    {
        parents[i] = node.get_parent();
        node = node.get_parent();
        i++;
    }

    for (var j = 0; j < tree.get_allNodes().length; j++)
    {
        if (!existNodeInArray(tree.get_allNodes()[j], parents))
        {
            tree.get_allNodes()[j].collapse();
            //copy the necessary code for the client node collapsed
        }
    }
}

//checks if node is in nodeArray, comparing by the Text of the node
function existNodeInArray(node, nodeArray)
{
    for (var i = 0; i < nodeArray.length; i++)
    {
        if (node.get_text() == nodeArray[i].get_text())
        {
            return true;
        }
    }

    return false;
}
</script>

I updated your Telerik Points as a small token of our gratitude.

Sincerely yours,
Veskoni
the Telerik team

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