Invisible Links

GoJS
1

Hello,

I am new to go.js. I want to know if there is in gojs something like wen i click on a node some invisible links appears and wen i click on other place the links disappears.

Best regards

2

Sure – implement a click event handler on some GraphObject in your Node (maybe a “Button”?) that changes the opacity of each Link of the Node.findLinksConnected() from 0.0 to 1.0 or vice versa.

3

Actually, what you are requesting is quite ambiguous. I’m now wondering if what you really want is not implement a GraphObject.click event handler, but instead a GraphObject.selectionChanged event handler. Maybe something like:

  $(go.Node, . . .,
      {
        selectionChanged: function(node) {
            node.findLinksConnected().each(function(link) {
                link.opacity = (node.isSelected ? 1.0 : 0.0);
            });
        }
      }
  )

However it is still unclear to me what you want to happen when multiple nodes are selected.

4

hello and thank for your response, i have this code

link.png2163×960 128 KB

I don’t want all the link to disappear, just a group of specific links so, I declared some link with opacity = 0.0, but the problem that always all link have opacity = 1.0 even when i set it to 0 before adding the link to the dataLinkArray, So i want to know if you have a solution for this problem.

5

You are binding the Shape.opacity property but are checking the Link.opacity property.