adminacctmanagerpanel.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/>.
 *
 */
package vocal.pw;

import vocal.comm.VPPTransactionWrapper;
import vocal.comm.VPPException;
import vocal.comm.VPPNoSuchFileException;
import vocal.userEditor.PServerInterface;
import vocal.pw.CreateAdminAccountPanel;
import vocal.userEditor.Buttons;
import vocal.userEditor.EditorModes;
import vocal.data.XMLUtils;

import javax.swing.*;
import javax.swing.table.TableColumn;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Toolkit;

import java.util.Vector;

import java.io.FileNotFoundException;
import java.io.IOException;

import org.w3c.dom.Document;
import org.xml.sax.SAXException;


/**
 * Displays a pannel which shows a table of all the administrative accounts
 * on the provisioning server and what type of access (administrator and/or
 * technician) each allows. <p>
 * Uses the CreateAdminAccountPanel to ceate or edit the accounts.
 */
public class AdminAcctManagerPanel extends JPanel
{
  JTable table;
  AdminTableModel model;
  JScrollPane scroller;
  PServerInterface connection;

  private JDialog createAdminAcct = null;
  private CreateAdminAccountPanel createAdminAcctPanel = null;
  private JPopupMenu popupMenu;

  private JButton exit;


  public AdminAcctManagerPanel(boolean isStandalone)
  {
    model = new AdminTableModel();
    table = new JTable();

    table.setModel(model);

    scroller = new JScrollPane(table);

    setLayout(new BorderLayout());

    add(scroller, BorderLayout.CENTER);

    exit = new JButton("Exit");

    exit.addActionListener(new ActionListener()
    {
      public void actionPerformed(ActionEvent e)
      {
        System.exit(0);
      }

    });


    JButton reload = new JButton("Reload all");

    reload.addActionListener(new ActionListener()
    {
      public void actionPerformed(ActionEvent e)
      {
        int rows = model.getRowCount();

        for (int i = 0; i < rows; i++)
        {
          model.deleteAdminAt(0);
        }

        init();
      }

    });

    JPanel temp = new JPanel();

    temp.setLayout(new BoxLayout(temp, BoxLayout.X_AXIS));
    temp.add(reload);
    temp.add(Box.createHorizontalGlue());

    if (isStandalone)
    {
      temp.add(exit);
    }

    add(temp, BorderLayout.SOUTH);
  }

  public AdminAcctManagerPanel(VPPTransactionWrapper con,
          boolean isStandAlone)
  {
    this(isStandAlone);

    setConnection(con);
  }

  public void setConnection(VPPTransactionWrapper con)
  {
    connection = new PServerInterface(con);
  }

  public void init()
  {
    try
    {

      // find out what are the admin accounts on the system
      String[] adminNames = null;

      try
      {
        adminNames = connection.getAllAdminNames();
      }
      catch (VPPNoSuchFileException e1)
      {
        return;
      }

      for (int i = 0; i < adminNames.length; i++)
      {

        // for each name, get the account file
        Document dom = null;

        try
        {
          dom = connection.getAdminNamed(adminNames[i]);
        }
        catch (VPPException e2)
        {
          VPPTransactionWrapper.showVPPException(e2,
                  "Failed to get Admin account " + adminNames[i]);

          return;
        }

        // change the dom to a vector
        Vector vector = model.convertAdminToVector(dom);

        // add the vector to the model
        model.addAdmin(vector);
      }

      // update the table
      model.fireTableDataChanged();
    }
    catch (FileNotFoundException e)
    {
      e.printStackTrace();
      JOptionPane.showMessageDialog(this.getTopLevelAncestor(),
              "Could not load list of administrators because: \n\n" + e);
    }
    catch (SAXException e)
    {
      e.printStackTrace();
      JOptionPane.showMessageDialog(this.getTopLevelAncestor(),
              "Could not parse xml file because: \n\n" + e);
    }
    catch (IOException e)
    {
      e.printStackTrace();
      JOptionPane.showMessageDialog(this.getTopLevelAncestor(),
              "Could not parse xml file because: \n\n" + e);
    }

    createPopupMenu();
  }

  private void createAdminAccountEdior()
  {
    Container parent = this.getTopLevelAncestor();

    if (JDialog.class.isInstance(parent))
    {
      createAdminAcct = new JDialog((JDialog) parent,
              "Create administrative account", false);
    }
    else if (JFrame.class.isInstance(parent))
    {
      createAdminAcct = new JDialog((JFrame) parent,
              "Create administrative account", false);
    }
    else        // if this is running in an applet, can't use it as parent of JDialog
    {
      createAdminAcct = new JDialog((JFrame) null,
              "Create administrative account", false);
    }

    createAdminAcctPanel =
      new CreateAdminAccountPanel(connection.getConnection());

    createAdminAcct.setContentPane(createAdminAcctPanel);
    createAdminAcct.pack();
    createAdminAcct.setModal(true);

    Dimension d = Toolkit.getDefaultToolkit().getScreenSize();

    createAdminAcct.setLocation((d.width - createAdminAcct.getSize().width)
            / 2, (d.height - createAdminAcct.getSize().height) / 2);
  }


  private void createPopupMenu()
  {
    popupMenu = new JPopupMenu();

    AbstractAction action = new AbstractAction("Edit")
    {
      public void actionPerformed(ActionEvent e)
      {
        if (createAdminAcct == null)
        {
          createAdminAccountEdior();
        }

        // if no rows are selected, there's nothing to edit
        if (table.getSelectedRowCount() == 0)
        {
          return;
        }

        int row = table.getSelectedRow();

        for (int i = 0; i < model.MAX_ID; i++)
        {
          String data = model.getValueAt(row, i).toString();

          createAdminAcctPanel.setData(data, i);
        }

        createAdminAcctPanel.setMode(EditorModes.EDIT_EXISTING_MODE);
        createAdminAcct.setVisible(true);

        int lastButton = createAdminAcctPanel.getLastButtonClicked();

        if (lastButton == Buttons.BUTTON_OK)
        {
          String xml = createAdminAcctPanel.getAdminXml();

          try
          {
            Vector vector = model.convertAdminToVector(xml);

            for (int i = 0; i < vector.size(); i++)
            {
              model.setValueAt(vector.elementAt(i), row, i);
            }

            model.fireTableDataChanged();
          }
          catch (Exception ex)
          {
            System.out.println("There was an error parsing the xml generated for the new administrator");
            ex.printStackTrace();
            JOptionPane.showMessageDialog(AdminAcctManagerPanel.this,
                    "There was an error parsing the "
                    + "xml for the generated administrator because: \n\n"
                    + ex, "ERROR", JOptionPane.ERROR_MESSAGE);
          }
        }
      }

    };

    popupMenu.add(action);


    action = new AbstractAction("Add")
    {
      public void actionPerformed(ActionEvent e)
      {
        if (createAdminAcct == null)
        {
          createAdminAccountEdior();
        }

        createAdminAcctPanel.setMode(EditorModes.ADD_NEW_MODE);
        createAdminAcct.setVisible(true);

        int lastButton = createAdminAcctPanel.getLastButtonClicked();

        if (lastButton == Buttons.BUTTON_OK)
        {
          String xml = createAdminAcctPanel.getAdminXml();

          try
          {
            Vector vector = model.convertAdminToVector(xml);

            model.addAdmin(vector);
            model.fireTableDataChanged();
          }
          catch (Exception ex)
          {
            System.out.println("There was an error parsing the xml generated for the new administrator");
            ex.printStackTrace();
            JOptionPane.showMessageDialog(AdminAcctManagerPanel.this,
                    "There was an error parsing the "
                    + "xml for the generated administrator because: \n\n"
                    + ex, "ERROR", JOptionPane.ERROR_MESSAGE);
          }
        }
      }

    };

    popupMenu.add(action);

    action = new AbstractAction("Delete")
    {
      public void actionPerformed(ActionEvent e)
      {

        while (table.getSelectedRowCount() > 0)
        {
          int row = table.getSelectedRow();

          // WHY does this not update automatically??
          table.getSelectionModel().removeIndexInterval(row, row);

          String name = model.deleteAdminAt(row);

          try
          {
            connection.deleteAdmin(name);
          }
          catch (VPPNoSuchFileException ex)
          {
            ex.printStackTrace();
            VPPTransactionWrapper.showVPPException(ex,
                    "Attempted to delete file that does not exist: " + name);
          }

          model.fireTableDataChanged();
        }
      }

    };

    popupMenu.add(action);

    RowSelectionListener listener = new RowSelectionListener();

    table.addMouseListener(listener);
    scroller.addMouseListener(listener);
  }


  private class RowSelectionListener extends MouseAdapter
  {
    public void mouseReleased(MouseEvent e)
    {
      if ((e.getModifiers() & InputEvent.BUTTON3_MASK)
          == InputEvent.BUTTON3_MASK)
      {

        // This is still not right. Needs more work. The problem is that the
        // e.getx method does not return the correct value once the table has
        // been scrolled.
        int width = AdminAcctManagerPanel.this.getWidth();
        int modx = e.getX() % width;

        int height = AdminAcctManagerPanel.this.getHeight();
        int mody = e.getY() % height;

        popupMenu.show(AdminAcctManagerPanel.this, modx, mody);
      }
    }

  }

}