The Net: Ultimate Internet Guide/WWLCD1.ISO/pc/java/in4wjcxu/src/como/commlet/superchat/superchat.java

Java Source | 1996-08-14 | 14.2 KB | 602 lines

package como.commlet.superchat;

import java.awt.*;
import java.applet.AudioClip;
import java.util.Hashtable;
import java.io.*;
import java.util.*;

import como.sys.*;
import como.util.*;
import como.awt.*;
import como.io.*;
import como.commlet.*;
import como.commlet.userlist.*;

public class SuperChat extends WindowCommlet
{
    public static final int MAX_USERS = 5;

    public static final int MSG_PLAY_SOUND = 10051;
    public static final int MSG_SUPERCHAT_EVENT = 10052;
    public static final int MSG_NEW_FACE = 10053;
    public static final int MSG_PRIVATE_CHAT = 10054;

    int numberOfUsers = 0;
    TextArea dialog;
    TextField input;
    FacePanel facepanel;
    ScrollPanel scrollpanel;
    Hashtable usernames;
    Button kickbutton;
    Button whisperbutton;
    Button audiobuttons[];
    AudioClip sounds[];
    AudioClip useraddedclip = null;
    AudioClip userleftclip = null;
    AudioClip lineclip = null;
    String soundnames[][] = {
        { "Laugh", "laugh.au", "laughs." },
        // just in case the SuperChat.sounds doesn't work :-)
    };


    public SuperChat() {
        usernames = new Hashtable();

        return;
    }

    public String getCommletName()
    {
        return "Super Chat Commlet, V1.0, (c) Jan Kautz & Ulrich Gall.";
    }

    public String getCommletInfo()
    {
        return
        "(c) 1996 Ulrich Gall & Jan Kautz\n"+
        "\n";
    }

    public void init()
    {
        super.init();

        setLayout(new BorderLayout());

        // NORTH
        Panel p = new Panel();
        p.setLayout(new BorderLayout());
        p.add("West",new Label("Current Topic: "));
        p.add("Center",getTopicTextField());
        add("North",p);

        // CENTER
        Panel centerpanel = new Panel();
        centerpanel.setLayout( new BorderLayout() );

        dialog = new TextArea();
        dialog.setEditable(false);

        centerpanel.add( "Center", dialog );

        Panel insidepanel = new Panel();
        insidepanel.setLayout( new BorderLayout() );

        input = new TextField();
        insidepanel.add( "North", input );

        // sound...
        print("Loading soundfile...");

        loadSoundFile();
        audiobuttons = new Button[soundnames.length];

        Panel actionpanel = new Panel();
        actionpanel.setLayout( new FlowLayout() );
        for( int i = 0; i < soundnames.length; i++ ) {
            actionpanel.add( audiobuttons[i] = new Button( soundnames[i][0] ) );
        }

        insidepanel.add( "South", actionpanel );
        centerpanel.add( "South", insidepanel );
        add( "Center", centerpanel );

        // WEST
        Panel westpanel = new Panel();
        Panel kickpanel = new Panel();
        westpanel.setLayout( new BorderLayout( 10, 10 ) );
        kickpanel.setLayout( new VertLayout( VertLayout.STRETCH ) );

        facepanel = new FacePanel( com, this );
        scrollpanel = new ScrollPanel( (Component)facepanel, (float)0.1 );

        kickpanel.add( kickbutton = new Button( "Kick user(s)" ) );
        if( !com.iAmMaster() ) kickbutton.disable();
        kickpanel.add( whisperbutton = new Button( "Whisper to user(s)" ) );

        westpanel.add( "Center", scrollpanel );
        westpanel.add( "South", kickpanel );

        add( "West", westpanel );
        pack();

        print(getCommletName());
        print(getCommletInfo());

        print("Ready, waiting for messages...");
    }

    public void loadSoundFile() {
        InputStream is = com.openInputStream( "SuperChat.sounds" );
        Vector lines;

        if( is == null )
        {
            sounds = new AudioClip[1];
            return;    // could not find file
        }

        lines = StreamLine.loadLines( new DataInputStream( is ) );
        int nrlines = lines.size() - 3;
        soundnames = new String[nrlines][3];
        sounds = new AudioClip[nrlines];

        for( int i = 0; i < nrlines; i++ ) {
            String line = (String)lines.elementAt( i+3 );
            int first = line.indexOf( ':' );
            int second = line.indexOf( ':', first+1 );

            soundnames[i][0] = line.substring( 0, first-1 ).trim();
            soundnames[i][1] = line.substring( first+2, second-1 ).trim();
            soundnames[i][2] = line.substring( second+2 ).trim();

            // means has still to be loaded!
            sounds[i] = null;
        }

        useraddedclip = com.loadAudioClip( ((String)lines.elementAt(0)).trim() );
        userleftclip = com.loadAudioClip( ((String)lines.elementAt(1)).trim() );
        lineclip = com.loadAudioClip( ((String)lines.elementAt(2)).trim() );
    }

    public void loadSound( int i )
    {
        sounds[i] = com.loadAudioClip( soundnames[i][1] );
    }

    public void addUser( int TheNewUser )
    {
        if( useraddedclip != null )
            useraddedclip.play();
        print(com.getUserName(TheNewUser) + " has joined the conversation.");
        usernames.put(new Integer(TheNewUser),com.getUserName(TheNewUser));

        facepanel.addUser( TheNewUser );
        scrollpanel.redo();

        numberOfUsers++;
    }

    public void userLeft( int RankWhoLeft )
    {
        if( userleftclip != null )
            userleftclip.play();
        print(com.getUserName(RankWhoLeft) + " has left the conversation.");

        facepanel.removeUser( RankWhoLeft );
        scrollpanel.redo();

        numberOfUsers--;
    }

    public boolean isUserAdmitted( User who ) {

        // If you uncomment this, only MAX_USERS
        // will be permitted to join this channel!
        // if( numberOfUsers >= MAX_USERS ) return false;

        return true;
    }

    public void stop()
    {
        facepanel.stop();

        com.sendToOthers(new Msg(Msg.CHAT_DIALOG_STRING,"bye bye..."));
        super.stop();
    }

    void print(String s)
    {
        int width = dialog.size().width;
        Font font = dialog.getFont();
        FontMetrics fm = null;

        if( font != null ) fm = dialog.getFontMetrics(font);

        if( fm != null ) {
            width -= fm.stringWidth( "MMMM" );    // just like that.

            StringTokenizer st = new StringTokenizer( s, " " );
            StringBuffer line = new StringBuffer();

            while( st.hasMoreTokens() ) {
                String next = st.nextToken();

                if( fm.stringWidth( line.toString()+next+" " ) < width )
                    line.append( " "+next );
                else
                {
                    dialog.insertText(line+"\n",dialog.getText().length());
                    line = new StringBuffer( "   "+next );
                }
            }
            dialog.insertText(line+"\n",dialog.getText().length());
        }
        else
            dialog.insertText(s+"\n",dialog.getText().length());

        // move the textfield down!
        int l = dialog.getText().length()-2;
        dialog.select( l, l );
    }

    public boolean handleMsg(Msg msg)
    {
        if( super.handleMsg(msg) ) return true;
        if( facepanel.handleMsg( msg ) ) return true;

        if( msg.arg == null ) msg.arg = "";

        if( msg.type == Msg.NEW_MASTER ) {
            if( com.iAmMaster() ) kickbutton.enable();
            else kickbutton.disable();

            // let it fall through
            return false;
        }

        if (msg.type == Msg.NEW_USER_INFO)
        {
            String newname = com.getUserName(msg.from);
            User newuser = com.getUser(msg.from);
            if (!usernames.get(new Integer(msg.from)).equals(newname))
            {
                print(usernames.get(new Integer(msg.from)) + " is now known as "+newname);
                usernames.put( new Integer( msg.from ), newname );
            }

            facepanel.newUserInfo( msg.from );

            // well perhaps some other people are interested!
            return false;
        }

        if (msg.type == MSG_PLAY_SOUND)
        {
            int nr = ((Integer)msg.arg).intValue();

            if( sounds[nr] == null )
            {
                loadSound( nr );
            }

            sounds[nr].play();

            return true;
        }

        if (msg.type == Msg.CHAT_DIALOG_STRING)
        {
            if (lineclip != null) lineclip.play();
            print(com.getUserName(msg.from) + "> " + msg.arg);
            return true;
        }

        if( msg.type == MSG_SUPERCHAT_EVENT )
        {
            print( com.getUserName(msg.from) + " " + msg.arg );
            return true;
        }

        if( msg.type == MSG_PRIVATE_CHAT )
        {
            print( com.getUserName(msg.from)+" whispers to you: "+msg.arg );
            return true;
        }

        return false;
    }

    public boolean action(Event evt,Object what)
    {
        String text = input.getText();

        if (evt.target == input)
        {
            com.sendToAll( new Msg( Msg.CHAT_DIALOG_STRING, text ) );
            input.setText("");
            return true;
        }

        for( int i = 0; i < audiobuttons.length; i++ )
        {
            if( evt.target == audiobuttons[i] ) {
                com.sendToAll( new Msg( MSG_PLAY_SOUND, new Integer(i) ) );
                com.sendToAll( new Msg( MSG_SUPERCHAT_EVENT, soundnames[i][2] ) );
                return true;
            }
        }

        if( evt.target == facepanel ) {
            int id = ((Integer)evt.arg).intValue();

            // well if you need to know that a user was selected/
            // deselected, then you can do sth. here!
        }

        if( evt.target == kickbutton || evt.target == whisperbutton ) {
            Vector sel = facepanel.getSelectedUsers();
            Enumeration e = sel.elements();

            while( e.hasMoreElements() ) {
                int id = ((Integer)e.nextElement()).intValue();

                if( evt.target == kickbutton )
                {
                    print( "You kicked "+com.getUserName( id )+" (reason: "+text+")." );
                    com.sendTo(new Msg( Msg.KICK_USER, id, text ) );
                }
                else if( evt.target == whisperbutton ) {
                    print( "You whisper to "+com.getUserName( id )+": "+text );
                    com.sendTo(new Msg( SuperChat.MSG_PRIVATE_CHAT, id, text ));
                }
                input.setText("");
            }
        }

        return false;
    }
}

class FacePanel extends Panel {
    static final int COLUMNS = 10;
    static final int IMAGESIZE = 60;

    Hashtable users;
    ComObj com;

    ImageButton myImageButton = null;
    TextField myNameField = null;
    TextField myCommentField = null;
    Hashtable cachedata;

    RemoteFileDialog rfd = null;
    Frame rfdframe = null;
    String currentFaceName = null;
    Component refresh;

    public FacePanel() {
        super();
        setLayout( new VertLayout( VertLayout.STRETCH ) );
        users = new Hashtable();
    }

    public FacePanel( ComObj com, Component refresher ) {
        this();
        this.com = com;
        this.refresh = refresher;

        // add Myself right now, also I don't know anything
        // about me! This is done, that the facepanel size
        // is correct from the beginning.
        cachedata = addUserToPanel( " ", " ", true );
    }

    public void addUser( int id ) {
        boolean isitme = (id == com.getMyID());

        if( isitme )
        {
            // well now I get the information about me!

            users.put( new Integer( id ), cachedata );
            newUserInfo( id );
            return;
        }

        Hashtable data = addUserToPanel( com.getUserName( id ), getUserComment( id ), false );

        users.put( new Integer( id ), data );

        if( currentFaceName != null )
            com.sendTo( new Msg( SuperChat.MSG_NEW_FACE, id, currentFaceName ) );
    }

    public Hashtable addUserToPanel( String name, String comment, boolean isitme ) {
        Panel smallpanel = new Panel();
        Hashtable data = new Hashtable();
        ImageButton imgbutton;
        TextField nametf;
        TextField commenttf;
        Panel infopanel = new Panel();

        infopanel.setLayout( new BorderLayout() );
        infopanel.add( "North", nametf = new TextField( name, COLUMNS ) );
        infopanel.add( "Center", commenttf = new TextField( comment, COLUMNS ) );
        smallpanel.setLayout( new BorderLayout( 10, 10 ) );
        smallpanel.add( "West", imgbutton = new ImageButton( IMAGESIZE, IMAGESIZE, " " ) );
        smallpanel.add( "Center", infopanel );

        if( isitme ) {
            myImageButton = imgbutton;
            myNameField = nametf;
            myCommentField = commenttf;
        }
        else {
            nametf.setEditable( false );
            commenttf.setEditable( false );
            imgbutton.setSwitch( true );        // means use as a switch!
        }

        add( smallpanel );

        // I want the panel to be stretched, that the
        // new component fits on it! Here I don't want
        // to care about the parent-container (if
        // I'm too large it's ok!)
        resize( size().width, preferredSize().height );
        layout();
        smallpanel.paintAll( smallpanel.getGraphics() );

        data.put( "name", nametf );
        data.put( "comment", commenttf );
        data.put( "imagebutton", imgbutton );
        data.put( "panel", smallpanel );

        return data;
    }

    public void removeUser( int id ) {
        Integer user = new Integer( id );
        Hashtable data;

        data = (Hashtable)users.get( user );
        Panel panel = (Panel)data.get( "panel" );
        remove( panel );

        users.remove( user );

        validate();
        paint( getGraphics() );
    }

    public Vector getSelectedUsers() {
        Vector selectedlist = new Vector();

        Enumeration e = users.keys();
        while( e.hasMoreElements() ) {
            Integer user = (Integer)e.nextElement();
            Hashtable data;

            data = (Hashtable)users.get( user );
            ImageButton imgbutton = (ImageButton)data.get( "imagebutton" );

            if( imgbutton.getState() == true && user.intValue() != com.getMyID() ) {
                // user is selected
                selectedlist.addElement( user );
            }
        }

        return selectedlist;
    }

    public void newUserInfo( int id ) {
        Hashtable data = (Hashtable)users.get( new Integer( id ) );
        TextField name = (TextField)data.get( "name" );
        TextField comment = (TextField)data.get( "comment" );

        name.setText( com.getUserName( id ) );
        name.select( 0, 0 );
        comment.setText( getUserComment( id ) );
        comment.select( 0, 0 );
    }

    public String getUserComment( int id ) {
        String commentstring = (String)((User)com.getUser( id )).get( User.COMMENT );
        if( commentstring == null ) return " ";
        else return commentstring;
    }

    public void newFace( int id, Image face ) {
        Integer user = new Integer( id );

        Hashtable data = (Hashtable)users.get( user );
        ImageButton imgbutton = (ImageButton)data.get( "imagebutton" );

        imgbutton.setImages( face, face );
    }

    public boolean action( Event evt, Object what ) {
        if( evt.target == myImageButton ) {
            if( rfdframe != null ) return true;

            rfd = new RemoteFileDialog( com, "SuperChat.images", this );
            rfdframe = new Frame();
            rfdframe.add( "Center", rfd );
            rfdframe.pack();
            rfdframe.setTitle( "Choose your face..." );
            rfdframe.show();

            return true;
        }

        if( evt.target == rfd && rfd != null ) {
            if( what != null )
            {
                currentFaceName = (String)what;
                com.sendToAll( new Msg( SuperChat.MSG_NEW_FACE, com.getMyID(), currentFaceName ) );
            }

            rfdframe.hide();
            rfdframe.dispose();
            rfdframe = null;
            rfd = null;

            return true;
        }

        if( evt.target == myNameField || evt.target == myCommentField )
        {
            User ego = com.getUser( com.getMyID() );
            ego.put( User.NAME, myNameField.getText() );
            ego.put( User.COMMENT, myCommentField.getText() );

            // also tells other people (and myself :-)!
            com.setLocalUser( ego );
            return true;
        }

        Enumeration e = users.keys();
        while( e.hasMoreElements() ) {
            Integer user = (Integer)e.nextElement();
            Hashtable data;

            data = (Hashtable)users.get( user );
            ImageButton imgbutton = (ImageButton)data.get( "imagebutton" );

            if( evt.target == imgbutton ) {
                // clicked on me: tell the refresh guy!

                refresh.action( new Event( this, Event.ACTION_EVENT, user ), user );
                return true;
            }
        }

        return false;
    }

    public void stop() {
        if( rfdframe != null )
        {
            rfdframe.hide();
            rfdframe.dispose();
            rfdframe = null;
        }
    }

    public boolean handleMsg( Msg msg )
    {
        if( msg.type == SuperChat.MSG_NEW_FACE )
        {
            Image image = com.loadImage( (String)msg.arg );
            newFace( msg.from, image );
            return true;
        }

        return false;
    }
}