Several classes in org.eclipse.ui.dialogs package of o.e.ui.workbench plugin are reusable in E4 RCP too. CheckedTreeSelectionDialog, FilteredTree, ListSelectionDialog to name a few. I read in one of the posts that E4 RCP should not include org.eclipse.ui and org.eclipse.ui.workbench plug-ins. Unfortunately o.e.e4.ui.workbench does not have all such goodies. These can be moved to JFace but there are few dependencies to PlatformUI class.
Is there a plan to migrate these classes also or it is no longer available for pure E4 RCP applications?