[Solved] bug: onNodeDropping() event

[N]

I've discovered a bug in the OnClientNodeDropping event of the current version of radTreeview for ASP.NET AJAX.

If you have a standard JavaScript confirm() statement inside the event handler, then on exiting the event handler, the error "htmlfile: Invalid argument" is triggered pointing to a Telerik generated Javascript file:

this._clearDrag();
},_clearDrag:function(){
if(this._dropClue){
document.body.removeChild(this._dropClue);
this._dropClue=null;
}
document.body.removeChild(this._draggingClue);

...where this._draggingClue is null in the last line.

You can re-create the bug by modifying the "drag and drop" online sample located at:

/radcontrols_prometheus/TreeView/Examples/Functionality/DragAndDropNodes/DefaultVB.aspx:

function onNodeDropping(sender, args)
{
    var dest = args.get_destNode();
    if (dest)
    {
        var clientSide = document.getElementById('ChbClientSide').checked;

        if(clientSide)
        {
            clientSideEdit(sender, args);
            if (confirm("my message")){

            }
            args.set_cancel(true);
            return;
        }

        dropOnTree(args);
    }
    else
    {
        dropOnHtmlElement(args);
    }
}

Is there a way around this error?

Regards,
Nuri

[Helen]

Hi Nuri,

Thank you for bringing this issue to our attention. We confirmed that this is a bug in the current version when alert/confirm is used in the OnClientNodeDropping event handler. I notified our developers of the problem and we will contact you as soon as we have certain results.

I hope this is not a major show-stopper for you.


Kind regards,
Helen
the Telerik team

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