JMeter example source code file (FieldStringEditor.java)

This example JMeter source code file (FieldStringEditor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - JMeter tags/keywords

actionlistener, awt, bean, component, event, fieldstringeditor, fieldstringeditor, focuslistener, gui, illegalargumentexception, javabean, jtextfield, jtextfield, object, override, override, propertyeditorsupport, string, string, swing

The JMeter FieldStringEditor.java source code

/*
 * 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.jmeter.testbeans.gui;

import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.beans.PropertyEditorSupport;

import javax.swing.JTextField;

//import org.apache.jorphan.logging.LoggingManager;
//import org.apache.log.Logger;

/**
 * This class implements a property editor for non-null String properties that
 * supports custom editing (i.e.: provides a GUI component) based on a text
 * field.
 * <p>
 * The provided GUI is a simple text field.
 *
 */
class FieldStringEditor extends PropertyEditorSupport implements ActionListener, FocusListener {
//  private static final Logger log = LoggingManager.getLoggerForClass();

    /**
     * This will hold the text editing component, either a plain JTextField (in
     * cases where the combo box would not have other options than 'Edit'), or
     * the text editing component in the combo box.
     */
    private JTextField textField;

    /**
     * Value on which we started the editing. Used to avoid firing
     * PropertyChanged events when there's not been such change.
     */
    private String initialValue = "";

    protected FieldStringEditor() {
        super();

        textField = new JTextField();
        textField.addActionListener(this);
        textField.addFocusListener(this);
    }

    @Override
    public String getAsText() {
        return textField.getText();
    }

    @Override
    public void setAsText(String value) {
        initialValue = value;
        textField.setText(value);
    }

    @Override
    public Object getValue() {
        return getAsText();
    }

    @Override
    public void setValue(Object value) {
        if (value instanceof String) {
            setAsText((String) value);
        } else {
            throw new IllegalArgumentException();
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Component getCustomEditor() {
        return textField;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void firePropertyChange() {
        String newValue = getAsText();

        if (initialValue.equals(newValue)) {
            return;
        }
        initialValue = newValue;

        super.firePropertyChange();
    }

    /**
     * {@inheritDoc}
     */
    public void actionPerformed(ActionEvent e) {
        firePropertyChange();
    }

    /**
     * {@inheritDoc}
     */
    public void focusGained(FocusEvent e) {
    }

    /**
     * {@inheritDoc}
     */
    public void focusLost(FocusEvent e) {
        firePropertyChange();
    }
}