How to set the input for the UI part in eclipse e4?

Question

I am using eclipse e4 application. I am using the eventBroker to pass values from one part to another part. If many parts(Kind of tabs) are open , how to pass values to the part(tab) that is currently selected. ? I am using the @UIEventTopic to get the values for the part. But the problem is ,the values are replicated to all the tabs. In other words , I am trying to show different JFreechart in different tabs, but the charts are replicated to the previous tabs.

Can anyone please suggest me some ideas?

Thanks in advance

Answer 1

The event broker always broadcasts to anything that is dealing with the event, you can't use it to send to one specific thing.

If you are in a Handler you can get the current part in the @Execute method and set a value directly in your class - something like:

@Execute
public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart activePart)
{
  Object part = activePart.getObject();

  if (part instanceof MyClass)
   {
     ((MyClass)part).setValue(xxxx);
   }
}

Update:

If you are in another part use the EPartService to get the active part:

@Inject
EPartService partService;

...

MPart activePart = partService.getActivePart();

Object part = activePart.getObject();

if (part instanceof MyClass)
 {
    ((MyClass)part).setValue(xxxx);
 }

You can also use EPartService.findPart("part id") to find a part with a given id.