Developing interactive graph applet

[nakulpathak]

Hi

Iam trying to develop a UI Screen, using which I can select nodes using a mouse.

Iam using gephiToolkit, Below is the feature I would like to achieve

1. Load a graph
2. display the graph on to the screen
3. Select a particular node, and print properties of that particular node to console.

I would like to know if this sort of feature is possible using gephi Toolkit.
(Currently using pApplet, but it does not allow node selection)

Any help would be appreciated.

Regards

[eduramiba]

Hi,
Preview doesn't handle node click events, at least for now.

But since last toolkit version you can create your own mouse listeners.
Read this topic for more info about doing this.

I think a simple node click listener could be easily coded.

Please note that this new API is likely to be extended in the future. For example, a related renderer is needed for the mouse listener to be enabled. These listeners should be able to be enabled without a renderer in some cases. You can create a dummy renderer for now.

Let me know if you find any problem doing this or you have any suggestion.

Eduardo

[nakulpathak]

Hi,
Thank you for your templates and using these template I have created one mouse listener class.
I think for making the thing works I need to register this mouse listener. I tried to register it but not able to do it.
I would like to know exactly where and how to register this mouse listener in my code.

Any help would be appreciated.

Regards

[eduramiba]

You need to annotate every class that implements a service with this:

Code: Select all

@ServiceProvider(service = PreviewMouseListener.class)


That's for the listener

Eduardo

[nakulpathak]

Hi,
Selecting preview applet event has started working for me.
Thanks Eduardo,

Nakul

[tangwing]

Sorry to pull you back to this question... but could you help me?
I'm also trying to implement a simple mouse click listener : just print a msg when being clicked.
Firstly I turn the Reuse_the_Preview_Applet example to a JFrame version, no problem for this;
Secondly, according to my comprehension of what you have said, I create a mouselistener like this:

Code: Select all

@ServiceProvider(service = PreviewMouseListener.class, position=0)
public class MyPreviewMouseListener implements PreviewMouseListener{
        @Override
        public void mouseClicked(PreviewMouseEvent event,
                        PreviewProperties properties, Workspace workspace) {
                System.out.println("I'm clicked!!");
        }
        @Override
        public void mousePressed(PreviewMouseEvent event,
                        PreviewProperties properties, Workspace workspace) {System.out.println("I'm clicked!!");}
        @Override
        public void mouseDragged(PreviewMouseEvent event,
                        PreviewProperties properties, Workspace workspace) {}
        @Override
        public void mouseReleased(PreviewMouseEvent event,
                        PreviewProperties properties, Workspace workspace) {}
}


Then I launch the app, but when I click nodes, nothing is printed.
Please give me some advices! Thanks a lot.

PS : I'am using eclipse to do this.

[eduramiba]

Hi,
Did you create a mouse responsive Renderer that uses this mouse listener? It's necessary for now.
Anyway, we need to extend this API for more general cases yet.

Eduardo

[tangwing]

Thanks for your reply.

Yes I did implement a MouserResponseRenderer, even though I don't think I've really understood...

Code: Select all

@ServiceProvider(service = MouseResponsiveRenderer.class)
public class AtosMouseResponsiveRenderer implements MouseResponsiveRenderer {

   @Override
   public boolean needsPreviewMouseListener(
         PreviewMouseListener previewMouseListener) {
      return previewMouseListener instanceof AtosPreviewMouseListener;
   }
}


I always don't have MouseClick response. And I have another doubt now : I'am not sure that I can develop on Eclipse. In Netbeans, with annotations like

Code: Select all

@ServiceProvider(service = MouseResponsiveRenderer.class)

, I can find the file generated under "\build\classes\META-INF\services\org.gephi.preview.spi.MouseResponsiveRenderer", while in Eclipse, there is nothing like that generated.

Anyway, my little app doesn't work on neither Netbeans nor Eclipse, and I think the services are not even registered under Eclipse.

[eduramiba]

Hi,
Actually, like the doc in MouserResponseRenderer says, you need to create a class that implements both Renderer and MouserResponseRenderer. Also, annotate it with

Code: Select all

@ServiceProvider(service = Renderer.class)


Eduardo