java - how to migrate the selection provider in e4 -

I am migrating eclips views to use the e4 framework, we currently use Compatibility Mode In use.

In most of the scenes I am setting up a site selection provider:

  site.setSelectionProvider (tree viewer);  

In different handlers, I use the code to select:

  IWorkbench Site site = handlerUtil.getActiveSite (event); ISelectionProvider selection provider = site.getSelectionProvider (); Select Selection = Selection Provider .get ();  

Some handlers also use the select provider and if this viewer works with it eg. Context, Expand ...

ISelectionProvider SelectionProvider = ActiveSite. Setting Selection Provider (); If (structured viewer for example of selection provider) {...}

Wiki explains how to handle new selections in E4.

In an E4 handler you use something like this:

  @Execute void execute (@ nominated (IServiceConstants.ACTIVE_SELECTION) IStructuredSelection selection {...}  

to get active selection.

< P> If you want to see the active part you can use it:

  @Execute void execute (@ named (IServiceConstants.ACTIVE_PART) MP art activePart) {object = activePart.getObject ( ); // 'Object' is the class that you defined for part in Application.e4xmi}