JMeter example source code file (WhileControllerGui.java)

This example JMeter source code file (WhileControllerGui.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, borderlayout, borderlayout, event, gui, jpanel, jpanel, jtextfield, non-nls-1, non-nls-1, override, string, swing, testelement, whilecontroller, whilecontroller, whilecontrollergui

The JMeter WhileControllerGui.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.control.gui;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.Box;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

import org.apache.jmeter.control.WhileController;
import org.apache.jmeter.gui.util.FocusRequester;
import org.apache.jmeter.testelement.TestElement;
import org.apache.jmeter.util.JMeterUtils;

public class WhileControllerGui extends AbstractControllerGui implements ActionListener {

    private static final long serialVersionUID = 240L;

    private static final String CONDITION_LABEL = "while_controller_label"; // $NON-NLS-1$

    /**
     * A field allowing the user to specify the condition (not yet used).
     */
    private JTextField theCondition;

    /** The name of the condition field component. */
    private static final String CONDITION = "While_Condition"; // $NON-NLS-1$

    /**
     * Create a new LoopControlPanel as a standalone component.
     */
    public WhileControllerGui() {
        init();
    }

    /**
     * A newly created component can be initialized with the contents of a Test
     * Element object by calling this method. The component is responsible for
     * querying the Test Element object for the relevant information to display
     * in its GUI.
     *
     * @param element
     *            the TestElement to configure
     */
    @Override
    public void configure(TestElement element) {
        super.configure(element);
        if (element instanceof WhileController) {
            theCondition.setText(((WhileController) element).getCondition());
        }

    }

    /**
     * Implements JMeterGUIComponent.createTestElement()
     */
    public TestElement createTestElement() {
        WhileController controller = new WhileController();
        modifyTestElement(controller);
        return controller;
    }

    /**
     * Implements JMeterGUIComponent.modifyTestElement(TestElement)
     */
    public void modifyTestElement(TestElement controller) {
        configureTestElement(controller);
        if (controller instanceof WhileController) {
            if (theCondition.getText().length() > 0) {
                ((WhileController) controller).setCondition(theCondition.getText());
            } else {
                ((WhileController) controller).setCondition(""); // $NON-NLS-1$
            }
        }
    }

    /**
     * Implements JMeterGUIComponent.clearGui
     */
    @Override
    public void clearGui() {
        super.clearGui();
        theCondition.setText(""); // $NON-NLS-1$
    }

    /**
     * Invoked when an action occurs. This implementation assumes that the
     * target component is the infinite loops checkbox.
     *
     * @param event
     *            the event that has occurred
     */
    public void actionPerformed(ActionEvent event) {
        new FocusRequester(theCondition);
    }

    public String getLabelResource() {
        return "while_controller_title"; // $NON-NLS-1$
    }

    /**
     * Initialize the GUI components and layout for this component.
     */
    private void init() {
        setLayout(new BorderLayout(0, 5));
        setBorder(makeBorder());
        add(makeTitlePanel(), BorderLayout.NORTH);

        JPanel mainPanel = new JPanel(new BorderLayout());
        mainPanel.add(createConditionPanel(), BorderLayout.NORTH);
        add(mainPanel, BorderLayout.CENTER);

    }

    /**
     * Create a GUI panel containing the condition. TODO make use of the field
     *
     * @return a GUI panel containing the condition components
     */
    private JPanel createConditionPanel() {
        JPanel conditionPanel = new JPanel(new BorderLayout(5, 0));

        // Condition LABEL
        JLabel conditionLabel = new JLabel(JMeterUtils.getResString(CONDITION_LABEL));
        conditionPanel.add(conditionLabel, BorderLayout.WEST);

        // TEXT FIELD
        // This means exit if last sample failed
        theCondition = new JTextField("");  // $NON-NLS-1$
        theCondition.setName(CONDITION);
        conditionLabel.setLabelFor(theCondition);
        conditionPanel.add(theCondition, BorderLayout.CENTER);
        theCondition.addActionListener(this);

        conditionPanel.add(Box.createHorizontalStrut(conditionLabel.getPreferredSize().width
                + theCondition.getPreferredSize().width), BorderLayout.NORTH);

        return conditionPanel;
    }
}