Eclipse E4 open Java Editor Programmatically

Question

I would like to know if there is a pure Eclipse E4 way to open programmatically a java editor.

I am migrating my plug-in from Eclipse 3.x to Eclipse E4, and I need to transform the following Eclipse 3.x call into an Eclipse E4 call.

final IWorkbenchPage page = Activator.getActiveEditor().getSite().getPage();
IDE.openEditor(page, (IFile) myResource);

After search and analysis seem there is not an Eclipse E4 equivalent for this call. Is this possible?

greg-449 · Accepted Answer · 2017-01-25 08:14:37Z

2

This isn't possible in a pure e4 application.

The Java editor is a 3.x compatibility mode component and won't run in an e4 application. The editor depends on many org.eclipse.ui.xxx plugins and things like IFile none of which are available in a plain e4 RCP.

answered Jan 25, 2017 at 8:14

greg-449

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Andreas Sewe · Accepted Answer · 2017-02-28 10:59:37Z

1

If you still have the compatibility layer around (which I assume must be the case, as JDT requires it), you should be able to execute the org.eclipse.ui.navigate.openResource command with a filePath parameter pointing to your resource. Alas, this command doesn’t give you the guarantee that the Java editor opens – it may just open a plain text editor. But perhaps that’s good enough for you. At least, your code doesn’t touch org.eclipse.ui.* packages directly (safe for the command’s ID).

answered Feb 28, 2017 at 10:59

Andreas Sewe

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