heartbeatscreen.java

这是一个用java和xml编写的流媒体服务器管理软件

/*
 * ====================================================================
 * The Vovida Software License, Version 1.0
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in
 * the documentation and/or other materials provided with the
 * distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 * and "Vovida Open Communication Application Library (VOCAL)" must
 * not be used to endorse or promote products derived from this
 * software without prior written permission. For written
 * permission, please contact [e-mail].
 * 
 * 4. Products derived from this software may not be called "VOCAL", nor
 * may "VOCAL" appear in their name, without prior written
 * permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
 * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
 * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 * 
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 * 
 */

/**
 * Title:        <p>
 * Description:  <p>
 * Copyright:    Copyright (c) <p>
 * Company:      <p>
 * @author
 * @version 1.0
 */
package vocal.ui;

import java.awt.*;
import javax.swing.*;
import vocal.data.*;
import java.awt.event.ActionEvent;


/**
 * $RCSfile: HeartbeatScreen.java,v $
 * 
 * @author $Author: bsamson $, $Date: 2001/05/18 23:17:07 $
 * @version $Revision: 1.12 $
 */
public class HeartbeatScreen extends FormPanelScreen
{

  // manually added
  ConfigureServers mainScreen;
  vocal.data.HeartbeatData dataManager;
  vocal.data.ConfigTree configTree;

  BorderLayout borderLayout1 = new BorderLayout();
  private JPanel jPanel4 = new JPanel();
  private JScrollPane jScrollPane1 = new JScrollPane();
  private JLabel groupDescriptionLabel = new JLabel();
  private FlowLayout flowLayout1 = new FlowLayout();
  private JPanel jPanel3 = new JPanel();
  private JPanel jPanel2 = new JPanel();
  private JPanel jPanel1 = new JPanel();
  private JLabel groupLabel = new JLabel();
  private LabelFieldPanel labelFieldPanel1 = new LabelFieldPanel();
  private BorderLayout borderLayout2 = new BorderLayout();
  private JLabel jLabel1 = new JLabel();
  private HostNameField hostNameTextField = new HostNameField("Host name");
  private JLabel hostLabel = new JLabel();
  private BorderLayout borderLayout3 = new BorderLayout();

  /**
   * 
   * @param aMainScreen
   */
  public HeartbeatScreen(ConfigureServers aMainScreen)
  {
    mainScreen = aMainScreen;
    configTree = mainScreen.getConfigTree();

    try
    {
      jbInit();
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
  }

  /**
   * 
   * @throws Exception
   */
  private void jbInit() throws Exception
  {
    this.setLayout(borderLayout1);
    groupDescriptionLabel.setForeground(Color.black);
    groupDescriptionLabel.setText("Group:");
    flowLayout1.setVgap(20);
    jPanel3.setLayout(borderLayout2);
    jPanel1.setLayout(flowLayout1);
    groupLabel.setForeground(Color.black);
    groupLabel.setText("Unknown");
    labelFieldPanel1.setPreferredSize(new Dimension(250, 100));
    labelFieldPanel1.setHorizontalGap(15);
    labelFieldPanel1.setVerticalGap(20);
    jLabel1.setForeground(Color.black);
    jLabel1.setText("Heartbeat Server");
    hostLabel.setText("Host:");
    hostLabel.setToolTipText("");
    hostLabel.setForeground(Color.black);
    jPanel4.setLayout(borderLayout3);
    hostNameTextField.setToolTipText("IP address of this Heartbeat server");
    this.add(jPanel4, BorderLayout.CENTER);
    jPanel4.add(jScrollPane1, BorderLayout.CENTER);
    jScrollPane1.getViewport().add(jPanel3, null);
    jPanel3.add(jPanel2, BorderLayout.CENTER);
    jPanel2.add(labelFieldPanel1, null);
    labelFieldPanel1.add(groupDescriptionLabel, null);
    labelFieldPanel1.add(groupLabel, null);
    labelFieldPanel1.add(hostLabel, null);
    labelFieldPanel1.add(hostNameTextField, null);
    jPanel3.add(jPanel1, BorderLayout.NORTH);
    jPanel1.add(jLabel1, null);
  }

  /**
   */
  public void displayData()
  {
    if (dataManager != null)
    {
      try
      {
        groupLabel.setText(dataManager.getGroupData());
        hostNameTextField.setText(dataManager.getHostData());
        toValidate.clear();
        toValidate.add(hostNameTextField);

      }
      catch (InvalidRequestException e)
      {
        e.printStackTrace();
      }
    }
  }

  /**
   */
  private void getData()
    throws InvalidRequestException
  {
    if (dataManager != null)
    {
        dataManager.setHostData(hostNameTextField.getText());
    }
  }

  /**
   */
  public void activate()
  {
    dataManager = configTree.getHeartbeatData();

    displayData();

    // changing host and port changes the filename
    hostNameTextField.setEnabled(false);
  }

  /**
   */
  public void activateNew()
  {
    dataManager = configTree.getNewHeartbeatData();

    hostNameTextField.setEnabled(true);
    displayData();
  }

  /**
   * called when the Ok button is pressed
   */
  public void actionPerformed(ActionEvent e)
  {
    if (dataManager != null)
    {

      if (!checkValidated())
      {
        return;
      }

      try
      {
        getData();
      }
      catch(InvalidRequestException e1)
      {
        return;
      }

      try
      {
        dataManager.saveData();
      }
      catch (InvalidRequestException e2)
      {
        e2.printStackTrace();
      }
    }

    dataManager = configTree.getHeartbeatData();

    mainScreen.enableTree();
  }


  public int confirmDelete()
  {
    return JOptionPane.showConfirmDialog(this, 
            new String("Are you sure you want to delete this Heartbeat Server?"), 
            "Delete Heartbeat Server Screen", JOptionPane.YES_NO_OPTION, 
            JOptionPane.WARNING_MESSAGE);
  }

}