Reestablishing PDE's preResourceChangeListeners after shutting down the JavaModelManager

[gerking]

It appears that JDT's JavaModelManager.doNotUse() disables large parts of PDE's functionality by removing WorkspacePluginModelManager and others from the preResourceChangeListeners of its DeltaProcessingState.

So far, so bad – I'm not sure if JDT should take care of reestablishing the listeners after a shutdown. At least the shutdown shouldn't be public API. But does PDE provide an API to do a reset and add the required listeners again? I couldn't find a way to do that programmatically (e.g., after doNotUse() was called within a plug-in test, whereas subsequent tests rely on the full PDE functionality).

Optimally, there could be a contract with JDT that would enable PDE to register a callback that adds the listeners again after every shutdown of the JavaModelManager.