JMeter example source code file (FilePanel.java)

This example JMeter source code file (FilePanel.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, changeevent, event, filepanel, filepanel, gui, jbutton, jfilechooser, jtextfield, jtextfield, linkedlist, list, non-nls-1, non-nls-1, string, string, swing, util

The JMeter FilePanel.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.gui.util;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.apache.jmeter.util.JMeterUtils;

/**
 * author Michael Stover Created April 18, 2002
 */
public class FilePanel extends HorizontalPanel implements ActionListener {
    private static final long serialVersionUID = 240L;

    private final JTextField filename = new JTextField(20);

    private final JLabel label = new JLabel(JMeterUtils.getResString("file_visualizer_filename")); //$NON-NLS-1$

    private final JButton browse = new JButton(JMeterUtils.getResString("browse")); //$NON-NLS-1$

    private static final String ACTION_BROWSE = "browse"; //$NON-NLS-1$

    private final List<ChangeListener> listeners = new LinkedList();

    private final String title;

    private final String[] filetypes;

    /**
     * Constructor for the FilePanel object.
     */
    public FilePanel() {
        this("", (String) null);
    }

    public FilePanel(String title) {
        this(title, (String) null);
    }

    public FilePanel(String title, String filetype) {
        this.title = title;
        if (filetype == null){
            this.filetypes = null;
        } else {
            this.filetypes = new String[]{ filetype };
        }
        init();
    }

    /**
     * Constructor for the FilePanel object.
     */
    public FilePanel(ChangeListener l, String title) {
        this(title, (String) null);
        listeners.add(l);
    }

    public FilePanel(String resString, String[] exts) {
        title = resString;
        this.filetypes = new String[exts.length];
        System.arraycopy(exts, 0, this.filetypes, 0, exts.length);
        init();
    }

    public void addChangeListener(ChangeListener l) {
        listeners.add(l);
    }

    private void init() {
        setBorder(BorderFactory.createTitledBorder(title));
        add(label);
        add(Box.createHorizontalStrut(5));
        add(filename);
        add(Box.createHorizontalStrut(5));
        filename.addActionListener(this);
        add(browse);
        browse.setActionCommand(ACTION_BROWSE);
        browse.addActionListener(this);

    }

    public void clearGui(){
        filename.setText(""); // $NON-NLS-1$
    }

    /**
     * If the gui needs to enable/disable the FilePanel, call the method.
     *
     * @param enable
     */
    public void enableFile(boolean enable) {
        browse.setEnabled(enable);
        filename.setEnabled(enable);
    }

    /**
     * Gets the filename attribute of the FilePanel object.
     *
     * @return the filename value
     */
    public String getFilename() {
        return filename.getText();
    }

    /**
     * Sets the filename attribute of the FilePanel object.
     *
     * @param f
     *            the new filename value
     */
    public void setFilename(String f) {
        filename.setText(f);
    }

    private void fireFileChanged() {
        Iterator<ChangeListener> iter = listeners.iterator();
        while (iter.hasNext()) {
            iter.next().stateChanged(new ChangeEvent(this));
        }
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals(ACTION_BROWSE)) {
            JFileChooser chooser;
            if(filetypes == null || filetypes.length == 0){
                chooser = FileDialoger.promptToOpenFile();
            } else {
                chooser = FileDialoger.promptToOpenFile(filetypes);
            }
            if (chooser != null && chooser.getSelectedFile() != null) {
                filename.setText(chooser.getSelectedFile().getPath());
                fireFileChanged();
            }
        } else {
            fireFileChanged();
        }
    }
}