Make eclipse editor only accessible from another editor

Question

I have the following two editors (as two seperate plugins):

(1) textual editor
(2) graphical editor to edit information related to the content in (1)

Now I would like to achieve that editor (2) can only be opened from a context menu in editor (1). That means, editor (2) should not appear in the "open with" context menu when clicking on a file.

Is that possible?

Answer 1

Editors only appear in the Open With context menu if they are associated with a file content type in the org.eclipse.ui.editors extension point which defines the editor. The association is done either by specifying the extensions attribute or using a contentTypeBinding.

So if you don't specify a content type association the editor can only be open programmatically and won't appear in Open With.