TermAutocompleteFieldFactory.java

package org.obo.annotation.view;

import javax.swing.JList;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.TableCellEditor;

import org.apache.log4j.Logger;
import org.obo.annotation.base.TermSet;
import org.obo.app.swing.AutocompleteCellEditor;
import org.obo.app.swing.AutocompleteField;
import org.obo.app.swing.SearchHit;
import org.obo.datamodel.OBOClass;
import org.obo.datamodel.OBOObject;

public class TermAutocompleteFieldFactory {

	/**
	 * Update SelectionManager with current term selection.  This allows components
	 * like the Term Info panel to display information about the term.
	 */
	private static void updateGlobalTermSelection(Object source, OBOClass term, SelectionManager selectionManager) {
		selectionManager.selectTerm(source, term, false);
	}

	public static AutocompleteField<OBOObject> createAutocompleteBox(TermSet terms, OntologyCoordinator coordinator) {
		final AutocompleteField<OBOObject> ac =  new AutocompleteField<OBOObject>(new TermSearcher(terms));
		ac.getListComponent().addListSelectionListener(new CompletionListListener(coordinator.getSelectionManager()));
		return ac;
	}

	public static TableCellEditor createAutocompleteEditor(TermSet terms, OntologyCoordinator coordinator) {
		return new AutocompleteCellEditor<OBOObject>(createAutocompleteBox(terms, coordinator));
	}

	private static class CompletionListListener implements ListSelectionListener {

		private SelectionManager selectionManager;

		public CompletionListListener(SelectionManager selectionManager) {
			this.selectionManager = selectionManager;
		}

		@Override
		public void valueChanged(ListSelectionEvent event) {
			final Object source = event.getSource();
			if (source instanceof JList) {
				final JList menu = (JList)source;
				try {
					final Object value = menu.getSelectedValue();
					if ((value instanceof SearchHit<?>) && (((SearchHit<?>)value).getHit() instanceof OBOClass)) {
						updateGlobalTermSelection(this, (OBOClass)((SearchHit<?>)value).getHit(), this.selectionManager);
						// TODO: code that updates the global term upon selection outside of the autocomplete box
					} else {
						// sometimes the selection is a String instead
					}
				} catch (IndexOutOfBoundsException e) {
					// for some reason sometimes the menu selection is not valid
				}
			} else {
				log().error("Source of combobox mouse over event is not JList");
			}
		}

	}

	private static Logger log() {
		return Logger.getLogger(TermAutocompleteFieldFactory.class);
	}

}