Bug 28698 Ctrl+O (show outline) does not work if the file being shown in the editor is read only
M4 The summary tells all. Works if the file is not read only. Is this by design?
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
}
		return null;
	}
	
	/*
	 * @see AbstractTextEditor#editorContextMenuAboutToShow(IMenuManager)
	 */
	public void editorContextMenuAboutToShow(IMenuManager menu) {
		super.editorContextMenuAboutToShow(menu);		
		
		addAction(menu, ITextEditorActionConstants.GROUP_EDIT, "Format"); 
				
		ActionContext context= new ActionContext(getSelectionProvider().getSelection());
		fContextMenuGroup.setContext(context);
		fContextMenuGroup.fillContextMenu(menu);
		fContextMenuGroup.setContext(null);
	}
	
	/*
	 * @see JavaEditor#setOutlinePageInput(JavaOutlinePage, IEditorInput)
	 */
	protected void setOutlinePageInput(JavaOutlinePage page, IEditorInput input) {
		if (page != null) {
			IWorkingCopyManager manager= JavaPlugin.getDefault().getWorkingCopyManager();
			page.setInput(manager.getWorkingCopy(input));
		}
	}
	
	/*