Re: [e4-dev] Dynamic Eclipse 4 with Clojure language

[Paul Webster <pwebster@xxxxxxxxxxxxxxxxxxx>]

Hi Laurent,

On Mon, Dec 2, 2013 at 8:04 AM, Laurent PETIT <laurent.petit@xxxxxxxxx> wrote:

I have considered it, not tried yet.

So far, I have spotted in past discussions on the subject the
following possibilities:

1/ EventBroker + APP_STARTUP_COMPLETE event => when to register to the
EventBroker in the context of Eclipse the IDE? By doing it in my
current Model Processor hook ?

Yes, we often use model processors to register for events (especially related to model changes) for the application going forward.  This is the Eclipse4 compatible approach.

 

2/ Extend org.eclipse.ui.startup ? I have read that I am guaranteed
that when my earlyStartup() method is called the Workbench is already
totaly operational. But then how to get the MApplication instance?
Currently I'm doing
PlatformUI.getWorkbench().getService(IEclipseContext.class).get(MApplication.class).

If you use org.eclipse.ui.startup, you've picked the right pattern.  This is based on 3.x (o.e.ui.startup is not part of Eclipse4) but if you need access to things that need the Workbench, then you are tied to 3.x anyway.

 

3/ Just use asyncExec on the display. But how to get the display instance?

If you are running in the IDE (which has the Workbench) this is the hardest thing to get correct.  Calling Display.getDefault() can instantiate a display on the incorrect thread and cause problems.  We use org.eclipse.ui.IWorkbench.getDisplay() but that's then tied to 1) running against the 3.x Workbench and 2) waiting until the workbench is up, which happens after the model processor stuff is called.

Later,
Paul

--
Paul Webster
Hi floor.  Make me a sammich! - GIR