NPE in ConfigurableMergeAction#selectionChanged #77
Description
With subclipse 4.2.7 and eclipse 4.9 the following NPE occurs sporadically on text selections:
java.lang.NullPointerException
at org.tigris.subversion.subclipse.ui.internal.TeamAction.selectionChanged(TeamAction.java:256)
at org.tigris.subversion.subclipse.ui.actions.ConfigurableMergeAction.selectionChanged(ConfigurableMergeAction.java:23)
at org.eclipse.ui.internal.PluginAction.refreshEnablement(PluginAction.java:209)
at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:276)
at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:300)
at org.eclipse.ui.internal.e4.compatibility.SelectionService.notifyListeners(SelectionService.java:242)
The exception is thrown because getTargetPart().getSite().getPage() returns null. The action's target part is a disposed editor. The PartSite of disposed parts no longer has a reference to its original workbench page (since eclipse 4.9, see Bug 536677).
ConfigurableMergeAction#setActivePart(IAction, IWorkbenchPart) is apparently never called.
Full stacktrace: stacktrace.log