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Object doesn't support property or method 'getNodeAt' (Read 1747 times)

jlj30 Full Member Offline I love YaBB 1G - SP1! Posts: 183 Joined: Sep 4^th, 2011	Object doesn't support property or method 'getNodeAt' Dec 24^th, 2013 at 3:17pm	Print Post
	Hi, First off, Merry Christmas and all the best to you and your family. Based on some earlier advice from these forums, I am attempting to implement a contextual menu when a user right-clicks on a node in the diagram. I have got that working. What I also need to do is gain access to the node's tag value. This is where I'm having a problem. Here's my mousedown code: Code (Javascript) function onNodeMouseDown(e) { if (e.button == 2 /* for right click */) { // show the context menu and place it at the mouse cursor var contextMenu = $find("<%= ctmTask.ClientID %>"); if (contextMenu) { var diagram = document.getElementById("<%= DiagramView1.ClientID %>"); var node = diagram.getNodeAt(e.clientX, e.clientY); var tag = node.getTag(); alert('tag = ' + tag); $telerik.cancelRawEvent(e); contextMenu.showAt(e.clientX, e.clientY); } } } The diagram is an object, not null. What silly thing am I doing wrong? Thanks Jim


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Object doesn't support property or method 'getNodeAt' Reply #1 - Dec 26^th, 2013 at 11:55am	Print Post
	Hi, Is this in JavaApplet mode? In such case, getElementById would return a DiagramApplet instance, and you will have to call its getDiagram() method to get the Diagram object. In addition, getNodeAt method takes a Point2D argument, which you can create by calling ScriptHelper.createPointF(x, y). If this is ImageMap mode and you are adding the handler via CreatingAreaElement, you could transfer the tag value by assigning it to some attribute of the AREA element. In ImageMap mode, getElementById(clientId) returns a simple DIV element that contains the diagram's IMG elements. I.e. you cannot call Diagram methods from the client side, unless you do that via Ajax calls to the server. I hope that helps, Stoyan


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