taverna-workbench-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ValidatingTextField.java

/*******************************************************************************
 * Copyright (C) 2012 The University of Manchester
 *
 *  Modifications to the initial code base are copyright of their
 *  respective authors, or their employers as appropriate.
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation; either version 2.1 of
 *  the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 ******************************************************************************/
package net.sf.taverna.t2.workbench.ui.views.contextualviews.activity;

import javax.swing.JTextField;

/**
 * Adds a "<tt>valid</tt>" property to a JTextField.
 * 
 * @author David Withers
 */
@SuppressWarnings("serial")
public class ValidatingTextField extends JTextField {
	private boolean valid = true;

	public ValidatingTextField() {
	}

	public ValidatingTextField(String text) {
		super(text);
	}

	@Override
	public boolean isValid() {
		return valid;
	}

	public void setValid(boolean valid) {
		if (this.valid != valid) {
			boolean old = this.valid;
			this.valid = valid;
			firePropertyChange("valid", old, valid);
		}
	}
}