taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ValidatingTextField.java

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.apache.taverna.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);
		}
	}
}