viewparticipantlist.java

视频编码的一个实例程序

/*
 * @(#)ViewParticipantList.java	1.3 00/03/20
 *
 * Copyright (c) 1999 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 *
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */

package jmapps.rtp;

import java.util.Vector;
import java.awt.*;
import java.awt.event.*;
import javax.media.rtp.*;

import com.sun.media.util.JMFI18N;

import jmapps.ui.*;


public class ViewParticipantList extends JMPanel {

    public static final String  PARTICIPANTS    = JMFI18N.getResource ( "jmstudio.rtpsessionctrl.partcipants" );
    public static final String  NONE            = JMFI18N.getResource ( "jmstudio.rtpsessionctrl.partcipants.none" );
    public static final String  REMOTE          = JMFI18N.getResource ( "jmstudio.rtpsessionctrl.partcipants.remote" );
    public static final String  LOCAL           = JMFI18N.getResource ( "jmstudio.rtpsessionctrl.partcipants.local" );
    public static final String  PASSIVE         = JMFI18N.getResource ( "jmstudio.rtpsessionctrl.partcipants.passive" );
    public static final String  ACTIVE          = JMFI18N.getResource ( "jmstudio.rtpsessionctrl.partcipants.active" );

    private SessionManager  mngrSession;
    private List            listParticipantsRemote;
    private List            listParticipantsLocal;
    private List            listParticipantsActive;
    private List            listParticipantsPassive;


    public ViewParticipantList ( SessionManager mngrSession ) {
	    super ();

        this.mngrSession = mngrSession;
        try {
            init();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void init () throws Exception {
        JMPanel panel;
        Label   label;

        this.setLayout ( new GridLayout(0,1,6,6) );

        panel = new JMPanel ( new BorderLayout() );
        this.add ( panel );
        label = new Label ( REMOTE + ":" );
        panel.add ( label, BorderLayout.NORTH );
        listParticipantsRemote = new List ();
        panel.add ( listParticipantsRemote, BorderLayout.CENTER );

        panel = new JMPanel ( new BorderLayout() );
        this.add ( panel );
        label = new Label ( LOCAL + ":" );
        panel.add ( label, BorderLayout.NORTH );
        listParticipantsLocal = new List ();
        panel.add ( listParticipantsLocal, BorderLayout.CENTER );

        panel = new JMPanel ( new BorderLayout() );
        this.add ( panel );
        label = new Label ( ACTIVE + ":" );
        panel.add ( label, BorderLayout.NORTH );
        listParticipantsActive = new List ();
        panel.add ( listParticipantsActive, BorderLayout.CENTER );

        panel = new JMPanel ( new BorderLayout() );
        this.add ( panel );
        label = new Label ( PASSIVE + ":" );
        panel.add ( label, BorderLayout.NORTH );
        listParticipantsPassive = new List ();
        panel.add ( listParticipantsPassive, BorderLayout.CENTER );

        updateFields ();
    }

    public void updateFields () {
        int     i;
        int     nCount;
        Vector  vectorParticipants;
        Object  objParticipant;

        vectorParticipants = getParticipants ( mngrSession, REMOTE );
        listParticipantsRemote.removeAll ();
        nCount = vectorParticipants.size ();
        for ( i = 0;  i < nCount;  i++ ) {
            objParticipant = vectorParticipants.elementAt ( i );
            if ( objParticipant != null  &&  objParticipant instanceof Participant )
                listParticipantsRemote.add ( ((Participant)objParticipant).getCNAME() );
        }
        if ( nCount < 1 )
            listParticipantsRemote.add ( NONE );

        vectorParticipants = getParticipants ( mngrSession, LOCAL );
        listParticipantsLocal.removeAll ();
        nCount = vectorParticipants.size ();
        for ( i = 0;  i < nCount;  i++ ) {
            objParticipant = vectorParticipants.elementAt ( i );
            if ( objParticipant != null  &&  objParticipant instanceof Participant )
                listParticipantsLocal.add ( ((Participant)objParticipant).getCNAME() );
        }
        if ( nCount < 1 )
            listParticipantsLocal.add ( NONE );

        vectorParticipants = getParticipants ( mngrSession, ACTIVE );
        listParticipantsActive.removeAll ();
        nCount = vectorParticipants.size ();
        for ( i = 0;  i < nCount;  i++ ) {
            objParticipant = vectorParticipants.elementAt ( i );
            if ( objParticipant != null  &&  objParticipant instanceof Participant )
                listParticipantsActive.add ( ((Participant)objParticipant).getCNAME() );
        }
        if ( nCount < 1 )
            listParticipantsActive.add ( NONE );

        vectorParticipants = getParticipants ( mngrSession, PASSIVE );
        listParticipantsPassive.removeAll ();
        nCount = vectorParticipants.size ();
        for ( i = 0;  i < nCount;  i++ ) {
            objParticipant = vectorParticipants.elementAt ( i );
            if ( objParticipant != null  &&  objParticipant instanceof Participant )
                listParticipantsPassive.add ( ((Participant)objParticipant).getCNAME() );
        }
        if ( nCount < 1 )
            listParticipantsPassive.add ( NONE );
    }

    public static Vector getParticipants ( SessionManager mngrSession, String strListType ) {
        Vector  vectorParticipants = null;

        if ( strListType.equals(REMOTE) ) {
            vectorParticipants = mngrSession.getRemoteParticipants ();
        }
        else if ( strListType.equals(LOCAL) ) {
            vectorParticipants = new Vector ();
            vectorParticipants.addElement ( mngrSession.getLocalParticipant() );
        }
        else if ( strListType.equals(PASSIVE) ) {
            vectorParticipants = mngrSession.getPassiveParticipants ();
        }
        else if ( strListType.equals(ACTIVE) ) {
            vectorParticipants = mngrSession.getActiveParticipants ();
        }

        return ( vectorParticipants );
    }

}