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JMeter example source code file (ParamModifierGui.java)

This example JMeter source code file (ParamModifierGui.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

awt, borderlayout, event, gui, horizontalpanel, jpanel, jtextfield, jtextfield, non-nls-1, non-nls-1, override, parammodifier, parammodifier, parammodifiergui, string, string, swing, zero

The JMeter ParamModifierGui.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.protocol.http.modifier.gui;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;

import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

import org.apache.jmeter.gui.util.HorizontalPanel;
import org.apache.jmeter.processor.gui.AbstractPreProcessorGui;
import org.apache.jmeter.protocol.http.modifier.ParamMask;
import org.apache.jmeter.protocol.http.modifier.ParamModifier;
import org.apache.jmeter.testelement.TestElement;
import org.apache.jmeter.util.JMeterUtils;

/**
 * A swing panel to allow UI with the ParamModifier class.
 *
 * Created Jan 18, 2002
 *
 */
public class ParamModifierGui extends AbstractPreProcessorGui implements FocusListener {

    private static final long serialVersionUID = 240L;

    /*
     * These are used as GUI item names;
     * LOWERBOUND, UPPERBOUND and INCREMENT are used in the focusLost() method
     */

    private static final String NAME = "name";

    private static final String PREFIX = "prefix";

    private static final String LOWERBOUND = "lowerBound";

    private static final String UPPERBOUND = "upperBound";

    private static final String INCREMENT = "increment";

    private static final String SUFFIX = "suffix";

    private static final String ZERO = "0"; //$NON-NLS-1$

    private JTextField _fieldName;

    private JTextField _prefix;

    private JTextField _lowerBound;

    private JTextField _upperBound;

    private JTextField _increment;

    private JTextField _suffix;

    public ParamModifierGui() {
        init();
    }

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

    @Override
    public void configure(TestElement el) {
        super.configure(el);
        ParamModifier model = (ParamModifier) el;
        updateGui(model);
    }

    public TestElement createTestElement() {
        ParamModifier modifier = new ParamModifier();
        modifyTestElement(modifier);
        return modifier;
    }

    /**
     * Modifies a given TestElement to mirror the data in the gui components.
     *
     * @see org.apache.jmeter.gui.JMeterGUIComponent#modifyTestElement(TestElement)
     */
    public void modifyTestElement(TestElement m) {
        configureTestElement(m);
        if (m instanceof ParamModifier) {
            ParamModifier modifier = (ParamModifier) m;
            ParamMask mask = modifier.getMask();
            mask.setFieldName(_fieldName.getText());
            mask.setPrefix(_prefix.getText());
            mask.setLowerBound(Long.parseLong(_lowerBound.getText()));
            mask.setIncrement(Long.parseLong(_increment.getText()));
            mask.setUpperBound(Long.parseLong(_upperBound.getText()));
            mask.setSuffix(_suffix.getText());
        }
    }

    /**
     * Implements JMeterGUIComponent.clearGui
     */
    @Override
    public void clearGui() {
        super.clearGui();

        _fieldName.setText(""); //$NON-NLS-1$
        _prefix.setText(""); //$NON-NLS-1$
        _lowerBound.setText(ZERO);
        _upperBound.setText("10"); //$NON-NLS-1$
        _increment.setText("1"); //$NON-NLS-1$
        _suffix.setText(""); //$NON-NLS-1$
    }

    public void focusGained(FocusEvent evt) {
    }

    public void focusLost(FocusEvent evt) {
        String name = ((Component) evt.getSource()).getName();
        if (evt.isTemporary()) {
            return;
        } else if (name.equals(LOWERBOUND)) {
            checkTextField(evt, ZERO);
        } else if (name.equals(UPPERBOUND)) {
            checkTextField(evt, ZERO);
        } else if (name.equals(INCREMENT)) {
            checkTextField(evt, ZERO);
        }
    }

    private void init() {// called from ctor, so must not be overridable
        setLayout(new BorderLayout());
        setBorder(makeBorder());

        add(makeTitlePanel(), BorderLayout.NORTH);
        add(getParameterMaskPanel(), BorderLayout.CENTER);
        // this.updateUI();
    }

    private void updateGui(ParamModifier model) {
        _fieldName.setText(model.getMask().getFieldName());
        _prefix.setText(model.getMask().getPrefix());
        _lowerBound.setText(Long.toString(model.getMask().getLowerBound()));
        _upperBound.setText(Long.toString(model.getMask().getUpperBound()));
        _increment.setText(Long.toString(model.getMask().getIncrement()));
        _suffix.setText(model.getMask().getSuffix());
    }

    private JPanel createLabeledField(String labelResName, JTextField field) {
        JLabel label = new JLabel(JMeterUtils.getResString(labelResName));
        label.setLabelFor(field);

        JPanel panel = new JPanel(new BorderLayout());
        panel.add(label, BorderLayout.NORTH);
        panel.add(field, BorderLayout.CENTER);
        return panel;
    }

    private JPanel getParameterMaskPanel() {
        HorizontalPanel panel = new HorizontalPanel(10, HorizontalPanel.TOP_ALIGNMENT);
        panel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(),
                JMeterUtils.getResString("html_parameter_mask"))); //$NON-NLS-1$

        _fieldName = new JTextField(10);
        _fieldName.setName(NAME);
        panel.add(createLabeledField("name", _fieldName)); //$NON-NLS-1$ resource name

        _prefix = new JTextField(5);
        _prefix.setName(PREFIX);
        panel.add(createLabeledField("id_prefix", _prefix)); //$NON-NLS-1$ resource name

        _lowerBound = new JTextField(ZERO, 5);
        _lowerBound.addFocusListener(this);
        _lowerBound.setName(LOWERBOUND);
        panel.add(createLabeledField("lower_bound", _lowerBound)); //$NON-NLS-1$ resource name

        _upperBound = new JTextField("10", 5);
        _upperBound.addFocusListener(this);
        _upperBound.setName(UPPERBOUND);
        panel.add(createLabeledField("upper_bound", _upperBound)); //$NON-NLS-1$ resource name

        _increment = new JTextField("1", 3);
        _increment.addFocusListener(this);
        _increment.setName(INCREMENT);
        panel.add(createLabeledField("increment", _increment)); //$NON-NLS-1$ resource name

        _suffix = new JTextField(5);
        _suffix.setName(SUFFIX);
        panel.add(createLabeledField("id_suffix", _suffix)); //$NON-NLS-1$ resource name

        JPanel mainPanel = new JPanel(new BorderLayout());
        mainPanel.add(panel, BorderLayout.NORTH);
        return mainPanel;
    }

    /**
     * Used to validate a text field that requires a <code>long input.
     * Returns the <code>long if valid, else creates a pop-up error
     * message and throws a NumberFormatException.
     *
     * @return the number entered in the text field
     */
    private long checkTextField(FocusEvent evt, String defaultValue) {
        JTextField temp = (JTextField) evt.getSource();
        // boolean pass = true;
        long longVal = 0;

        try {
            longVal = Long.parseLong(temp.getText());
        } catch (NumberFormatException err) {
            JOptionPane.showMessageDialog(this, "This field must have a long value!", "Value Required",
                    JOptionPane.ERROR_MESSAGE);
            temp.setText(defaultValue);
            temp.requestFocus();
        }
        return longVal;
    }
}

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