AutocompleteCellEditor.java

package org.obo.app.swing;

import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.util.EventObject;

import javax.swing.AbstractCellEditor;
import javax.swing.JTable;
import javax.swing.table.TableCellEditor;

import org.apache.log4j.Logger;

public class AutocompleteCellEditor<T> extends AbstractCellEditor implements TableCellEditor {

	private final AutocompleteField<T> acField;
	private Object originalValue = null;
	private Object value = null;
	private int clickCountToStart = 2;

	public AutocompleteCellEditor(AutocompleteField<T> autocompleteField) {
		this.acField = autocompleteField;
		this.acField.getComboBox().putClientProperty("JComboBox.isTableCellEditor", true);
		this.acField.getComboBox().setBorder(null); //this corrects the editor height on Windows
		this.acField.addActionListener(new AutocompleteBoxActionListener());
	}

	@Override
	@SuppressWarnings("unchecked")
	public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
		this.originalValue = value;
		this.value = value;
		this.acField.setValue((T)value);
		return this.acField.getComboBox();
	}

	@Override
	public void cancelCellEditing() {
		this.value = this.originalValue;
		super.cancelCellEditing();
	}

	@Override
	public Object getCellEditorValue() {
		return this.value;
	}

	@Override
	public boolean isCellEditable(EventObject anEvent) {
		if (anEvent instanceof MouseEvent) { 
			return ((MouseEvent)anEvent).getClickCount() >= this.clickCountToStart;
		}
		return true;
	}

	@Override
	public boolean shouldSelectCell(EventObject anEvent) {
		return true;
	}

	public void setClickCountToStart(int count) {
		this.clickCountToStart = count;
	}

	public int getClickCountToStart() {
		return this.clickCountToStart;
	}

	private class AutocompleteBoxActionListener implements ActionListener {

		@Override
		public void actionPerformed(ActionEvent e) {
			value = acField.getValue();
			stopCellEditing();
		}
	}

	@SuppressWarnings("unused")
	private Logger log() {
		return Logger.getLogger(this.getClass());
	}

}