Bug 18015 NPE in structured selection if file opened from repo
F1 1. repository view - open a java file 2. use structured selection java.lang.NullPointerException at org.eclipse.jdt.internal.ui.javaeditor.structureselection.StructureSelectionActi on.getNewSelectionRange(StructureSelectionAction.java:68) at org.eclipse.jdt.internal.ui.javaeditor.structureselection.StructureSelectionActi on.run(StructureSelectionAction.java:53) at org.eclipse.ui.texteditor.RetargetTextEditorAction.run (RetargetTextEditorAction.java:127) at org.eclipse.jface.action.Action.runWithEvent(Action.java:590) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection (ActionContributionItem.java:407) at org.eclipse.jface.action.ActionContributionItem.handleWidgetEvent (ActionContributionItem.java:361) at org.eclipse.jface.action.ActionContributionItem.access$0 (ActionContributionItem.java:352) at org.eclipse.jface.action.ActionContributionItem$ActionListener.handleEvent (ActionContributionItem.java:47) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:75) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:825) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1527) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1289) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1085) at org.eclipse.ui.internal.Workbench.run(Workbench.java:1068) at org.eclipse.core.internal.boot.InternalBootLoader.run (InternalBootLoader.java:739) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:432) at EclipseRuntimeLauncher.main(EclipseRuntimeLauncher.java:24)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/structureselection/StructureSelectHistoryAction.java
private SelectionHistory fHistory;
	
	public StructureSelectHistoryAction(CompilationUnitEditor editor, SelectionHistory history) {
		super(JavaEditorMessages.getString("StructureSelectHistory.label")); 
		setToolTipText(JavaEditorMessages.getString("StructureSelectHistory.tooltip")); 
		setDescription(JavaEditorMessages.getString("StructureSelectHistory.description")); 
		Assert.isNotNull(history);
		Assert.isNotNull(editor);
		fHistory= history;
		fEditor= editor;
		update();
	}
	
	public void update() {
		setEnabled(!fHistory.isEmpty());
	}
	
	public void run() {
		ISourceRange old= fHistory.getLast();
		if (old != null) {
			try {
				fHistory.ignoreSelectionChanges();
				fEditor.selectAndReveal(old.getOffset(), old.getLength());
			} finally {
				fHistory.listenToSelectionChanges();
			}
		}
	}
}