package org.docear.plugin.services.features.documentretrieval; import org.freeplane.core.ui.ribbon.event.AboutToPerformEvent; import org.freeplane.core.ui.ribbon.event.IActionEventListener; public class RibbonActionEventListener implements IActionEventListener { public void aboutToPerform(AboutToPerformEvent event) { if (DocumentRetrievalController.getController() != null) { DocumentRetrievalController.getController().closeDocumentView(); } } }