Some Eclipse Foundation services are deprecated, or will be soon. Please ensure you've read this important communication.
Bug 317441 - [JFace] JFace plugin should be a singleton
Summary: [JFace] JFace plugin should be a singleton
Status: CLOSED DUPLICATE of bug 388359
Alias: None
Product: Platform
Classification: Eclipse Project
Component: UI (show other bugs)
Version: 3.4.2   Edit
Hardware: PC Windows XP
: P3 normal (vote)
Target Milestone: ---   Edit
Assignee: Platform UI Triaged CLA
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-06-21 09:35 EDT by Krzysztof Daniel CLA
Modified: 2014-12-08 08:06 EST (History)
6 users (show)

See Also:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Krzysztof Daniel CLA 2010-06-21 09:35:15 EDT 
It uses SWT, offers some registries. It is also UI plugin, and all other UI plugins are singletons.
Comment 1 Troy Bishop CLA 2010-06-21 09:59:58 EDT 
The same may apply for the org.eclipse.jface.text and org.eclipse.jface.databinding bundles.
Comment 2 Remy Suen CLA 2010-06-21 10:00:47 EDT 
(In reply to comment #1)
> The same may apply for the org.eclipse.jface.text and
> org.eclipse.jface.databinding bundles.

Please open a separate bug against Platform/Text for the org.eclipse.jface.text case.
Comment 3 Paul Webster CLA 2010-06-21 10:08:11 EDT 
What determines if it must be a singleton is if you cannot have 2 versions of the bundle running at the same time.

ex: anything that provides extension/extension points must be a singleton.

SWT is a special case because of the singleton nature of the Display and the native libs (similar to com.ibm.icu, which uses no extensions but mimics the singleton Locale/Calendar APIs).

Is there something to prevent jface 3.5.x and jface 3.6 running on a 3.6 SWT?

PW
Comment 4 Boris Bokowski CLA 2010-06-21 12:11:12 EDT 
(In reply to comment #3)
> Is there something to prevent jface 3.5.x and jface 3.6 running on a 3.6 SWT?

Sounds like a fun experiment to try ;-)
Comment 5 Dani Megert CLA 2014-12-08 08:06:16 EST 

*** This bug has been marked as a duplicate of bug 388359 ***