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psyced
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psyced/utility/veChat.java

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/*
** veChat - applet for the psyced
** written 1997 by Carlo v. Loesch for symlynX.com
**
** http://www.psyced.org/
** http://symlynX.com/
**
** basics seen in JavaTalkClient.java by
** Jean-Guy Speton and Maharajapuram Balakrishnan
** http://www.cs.orst.edu/~speton/
*/
/* Let's import precisely what we need to improve compilation times */
import java.awt.event.*; // good start! TODO
import java.awt.Font;
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.TextField;
import java.awt.Component;
//import java.awt.Insets;
//import java.awt.Graphics;
import java.awt.Color;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.awt.Label;
import java.awt.TextArea;
import java.awt.List;
import java.awt.Button;
import java.awt.FontMetrics;
//import java.awt.Dimension;
import java.awt.Choice;
import java.awt.Frame;
import java.awt.BorderLayout;
import java.io.DataInputStream;
//import java.io.BufferedReader;
//import java.io.InputStreamReader;
import java.awt.Color;
import java.util.HashMap;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.EOFException;
import java.util.StringTokenizer;
import java.net.Socket;
import java.net.URL;
import java.applet.Applet;
public class veChat extends Applet implements ActionListener {
veChatFrame win = null;
public Button butt;
public void init() {
win = new veChatFrame(this);
String actiText, closeText;
setLayout(new BorderLayout());
Color col = win.getColorParameter("BGCOLOR");
if (col != null) this.setBackground(col);
col = win.getColorParameter("FGCOLOR");
if (col != null) this.setForeground(col);
actiText = win.getParameter("ACTIVATION");
if (actiText == null) actiText = "CLICK HERE TO JOIN THE CHAT";
butt = new Button(actiText);
col = win.getColorParameter("BGLAUNCHER");
butt.setBackground(col);
col = win.getColorParameter("FGLAUNCHER");
butt.setForeground(col);
add("Center",butt);
butt.addActionListener(this);
butt.setLabel("CLICK HERE TO EXIT THE CHAT");
win.doInit();
//if (nick == null && input.getText().equals(defNick)) return;
// doConnect(host, port, nick, pass);
}
public void actionPerformed(ActionEvent event) {
if(win.isVisible()) {
win.close();
butt.setLabel("CLICK HERE TO JOIN THE CHAT");
} else {
win.doShow();
butt.setLabel("CLICK HERE TO EXIT THE CHAT");
}
}
public String getAppletInfo() { return "veChat GUI 2.0 by CvL@vapl.symlynX.com"; }
}
class veChatFrame extends Frame implements Runnable, WindowListener,
ActionListener {
veChat app = null;
boolean isVisible = false;
Language l = new Language();
public String getAppletInfo() { return "veChat GUI 2.0 by CvL@vapl.symlynX.com"; }
public String getParameter(String name) {
if (app != null) return app.getParameter(name);
return null;
}
public URL getDocumentBase() {
if (app != null) return app.getDocumentBase();
return null;
}
public veChatFrame(veChat parent) {
app = parent;
setSize(500,400);
String t = getParameter("TITLE");
setTitle(t != null ? t : getAppletInfo());
}
public void doShow() {
if (isVisible()) show();
else takeOver();
input.requestFocus();
}
public void takeOver() {
MenuItem menuItem;
menuBar = new MenuBar();
menu = new Menu("Net");
menuItem = new MenuItem("Start");
menuItem.addActionListener(this);
menu.add(menuItem);
menuItem = new MenuItem("Stop");
menuItem.addActionListener(this);
menu.add(menuItem);
menu.addSeparator();
menuItem = new MenuItem("End");
menuItem.addActionListener(this);
menu.add(menuItem);
menuBar.add(menu);
menu = new Menu("Font");
for (int i=6; i <= 24; i+=2) {
menuItem = new MenuItem(String.valueOf(i));
menuItem.addActionListener(this);
menu.add(menuItem);
}
menuBar.add(menu);
menu = new Menu("Language");
menuItem = new MenuItem("english");
menuItem.addActionListener(this);
menu.add(menuItem);
menuItem = new MenuItem("german");
menuItem.addActionListener(this);
menu.add(menuItem);
menuBar.add(menu);
menu = new Menu("People");
menuItem = new MenuItem("/people");
menuItem.addActionListener(this);
menu.add(menuItem);
menuItem = new MenuItem("/who");
menuItem.addActionListener(this);
menu.add(menuItem);
menu.addSeparator();
menuItem = new MenuItem("/show");
menuItem.addActionListener(this);
menu.add(menuItem);
menuBar.add(menu);
menu = new Menu("Room");
menuItem = new MenuItem("/users");
menuItem.addActionListener(this);
menu.add(menuItem);
menuItem = new MenuItem("/status");
menuItem.addActionListener(this);
menu.add(menuItem);
String placeList = getParameter("PLACES");
if (placeList != null) {
StringTokenizer rot = new StringTokenizer(placeList, ";");
menu = new Menu("Places");
while (rot.hasMoreTokens()){
String t = rot.nextToken();
if (t == "-") menu.addSeparator();
else {
menuItem = new MenuItem(t);
menuItem.addActionListener(this);
menu.add(menuItem);
}
}
menuBar.add(menu);
}
menu = new Menu("Info");
menuItem = new MenuItem("Help");
menuItem.addActionListener(this);
menu.add(menuItem);
menuItem = new MenuItem("About");
menuItem.addActionListener(this);
menu.add(menuItem);
// menu.addSeparator();
// menu.add("Register");
menu.addSeparator();
menuItem = new MenuItem("/edit");
menuItem.addActionListener(this);
menu.add(menuItem);
// menuBar.setHelpMenu(menu); -- this sadly doesn't work!
menuBar.add(menu);
setMenuBar(menuBar);
show();
if (!isVisible) {
if (connected()) say("\n"+l.get(LANG, "_connection_closed")+"\n");
isVisible = true;
}
setMetrics(view);
if (connected()) {
doDisconnect();
}
else haveDisconnected();
greet();
}
String nick = null, pass = null, host = null;
int port = PORT;
String defNick = null, talkNick;
String LAYOUT = null, LANG = "en", FONTFACE = null;
Font f = null;
protected Label prompt;
protected List people;
protected TextArea view;
FontMetrics fm;
int spaceChar, viewWidth;
protected Choice ucmd;
protected TextField input;
protected TextField status;
private MenuBar menuBar;
private Menu menu;
public void doInit() {
nick = getParameter("NICK");
pass = getParameter("PASS");
host = getParameter("HOST"); // works only outside of sandbox
try { port = Integer.parseInt(getParameter("PORT")); }
catch (NumberFormatException e) { port = PORT; }
LANG = getParameter("LANG") == null ? "en" : getParameter("LANG");
LAYOUT = getParameter("LAYOUT");
FONTFACE = getParameter("FONTFACE");
if (FONTFACE != null)
f = new Font(FONTFACE, Font.PLAIN, 12);
defNick = getParameter("DEFNICK");
if (defNick == null) defNick = "";
Color col = getColorParameter("BGCOLOR");
if (col != null) this.setBackground(col);
col = getColorParameter("FGCOLOR");
if (col != null) this.setForeground(col);
Color bcol = getColorParameter("BGBUTTON");
this.setLayout(new GridBagLayout());
prompt = new Label("Nickname:");
col = getColorParameter("FGPROMPT");
if (col != null) prompt.setForeground(col);
constrain(this, prompt, 0, 1, 1, 1,
GridBagConstraints.BOTH, GridBagConstraints.CENTER, 0.1, 0.0,
6, 0, 0, 0);
input = new TextField("");
input.setEditable(true);
input.addActionListener(this);
constrain(this, input, 1, 1, 1, 1,
GridBagConstraints.BOTH, GridBagConstraints.CENTER, 1.0, 0.0,
0, 0, 4, 0);
ucmd = new Choice();
ucmd.addItem("");
ucmd.addItemListener(new ucmdEvent() );
col = getColorParameter("BGPERSON");
if (col != null) ucmd.setBackground(col);
col = getColorParameter("FGPERSON");
if (col != null) ucmd.setForeground(col);
constrain(this, ucmd, 2, 1, 1, 1,
GridBagConstraints.NONE, GridBagConstraints.CENTER, 1.0, 0.0,
0, 4, 0, 0);
view = new TextArea("");
constrain(this, view, 0, 0, 2, 1,
GridBagConstraints.BOTH, GridBagConstraints.CENTER, 4.0, 1.0,
4, 4, 4, 4);
people = new List();
people.addItemListener(new peopleEvent() );
col = getColorParameter("BGPEOPLE");
if (col != null) people.setBackground(col);
col = getColorParameter("FGPEOPLE");
if (col != null) people.setForeground(col);
constrain(this, people, 2, 0, 1, 1,
GridBagConstraints.BOTH, GridBagConstraints.CENTER, 0.2, 1.0,
0, 18, 4, 4);
//try { setMetrics(view); }
//catch (NullPointerException e) { /* do nothing ... */ }
view.setEditable(false);
col = getColorParameter("BGVIEW");
if (col != null) view.setBackground(col);
//col = new Color(0,0,0);
col = getColorParameter("FGCOLOR");
view.setForeground(col);
//System.out.println(col);
status = new TextField("");
status.setEditable(false);
col = getColorParameter("BGSTATUS");
if (col != null) status.setBackground(col);
col = getColorParameter("FGSTATUS");
if (col != null) status.setForeground(col);
constrain(this, status, 0, 2, 3, 1,
GridBagConstraints.BOTH, GridBagConstraints.CENTER, 1.0, 0.0,
4, 4, 4, 4);
col = getColorParameter("BGINPUT");
if (col != null) input.setBackground(col);
col = getColorParameter("FGINPUT");
if (col != null) input.setForeground(Color.white);
// g = getGraphics();
if (host == null) host = app.getCodeBase().getHost();
takeOver();
}
public void init() {
if (host == null) doInit();
// repaint();
// input.selectAll();
}
/** Einfache Bildschirmausgabefunktion */
public void say(String msg) {
synchronized (view) {
view.append(msg);
}
}
public void setMetrics(TextArea vu) {
fm = vu.getFontMetrics(vu.getFont());
spaceChar = fm.stringWidth(" ");
viewWidth = vu.getSize().width;
}
/** Smarte Bildschirmausgabefunktion */
public void wrapsay(String t) {
int sw, line = 33; // empirisch ermittelt
String token, msg = "";
StringTokenizer st = new StringTokenizer(t);
while (st.hasMoreTokens()) {
token = st.nextToken();
sw = fm.stringWidth(token);
line += sw + spaceChar;
if (line < viewWidth || sw > viewWidth) {
msg += token + " ";
} else {
// indent, a bit like ircII's /set indent on
// guess who coded that one... ;)
//
msg += "\n " + token + " ";
line = 33 + 4*spaceChar + sw;
}
}
say(msg + "\n");
}
public void constrain(Container container, Component component,
int grid_x, int grid_y,
int grid_width, int grid_height,
int fill, int anchor, double weight_x, double weight_y,
int left, int top, int right, int bottom)
{
GridBagConstraints c = new GridBagConstraints();
c.gridx = grid_x; c.gridy = grid_y;
c.gridwidth = grid_width; c.gridheight = grid_height;
c.fill = fill; c.anchor = anchor;
c.weightx = weight_x; c.weighty = weight_y;
if (f != null) component.setFont(f);
((GridBagLayout)container.getLayout()).setConstraints(component, c);
container.add(component);
}
protected Color getColorParameter(String name) {
String value = this.getParameter(name);
//System.err.println("value: "+value);
if (value != null && value.length() == 7)
value = value.substring(1);
int intvalue;
try { intvalue = Integer.parseInt(value, 16); }
catch (NumberFormatException e) { return null; }
return new Color(intvalue);
}
public void greet() {
view.setText("");
String g = getParameter("GREETING");
if (g != null) {
StringTokenizer st = new StringTokenizer(g, ";");
while (st.hasMoreTokens()) {
wrapsay(st.nextToken() + "\n");
}
}
say(getAppletInfo());
say("\n"+l.get(LANG, "_symlynx")+"\n");
}
public void doTalk(String sel) {
if (talkNick == sel || sel == null) {
send("/talk\n");
talkNick = null;
prompt.setText(l.get(LANG, "_to_everybody"));
// Color col = getColorParameter("FGCOLOR");
// if (col != null) view.setForeground(col);
Color col = getColorParameter("BGVIEW");
if (col != null) view.setBackground(col);
} else {
talkNick = sel;
send("/talk "+ talkNick +"\n");
prompt.setText(talkNick +":");
// Color col = getColorParameter("FGTALK");
// if (col != null) view.setForeground(col);
Color col = getColorParameter("BGTALK");
if (col != null) view.setBackground(col);
}
}
/********************************************************************/
/********************* start of eventhandling ***********************/
/********************************************************************/
public void windowActivated(WindowEvent evt) { }
public void windowClosing(WindowEvent evt) { windowClosed(evt); }
public void windowDeactivated(WindowEvent evt) { }
public void windowDeiconified(WindowEvent evt) { }
public void windowIconified(WindowEvent evt) { }
public void windowOpened(WindowEvent evt) { }
public void windowClosed(WindowEvent event) {
doDisconnect();
dispose();
isVisible = false;
}
public class ucmdEvent implements ItemListener {
public void itemStateChanged(ItemEvent evt) {
Object arg = evt.getItem();
String p = people.getSelectedItem();
//System.out.println(arg + " and " + p + " given");
if (p == null || p == "") {
if (connected())
sayStatus(l.get(LANG, "_pick_person_from_list"));
return;
}
if (arg != null && ((String)arg).startsWith("/")) {
if (arg == "/talk")
doTalk(p);
else send(arg +" "+ p + "\n");
// send(arg +" "+ p + (arg == "Notify"? " immediate\n": "\n"));
}
if(!(ucmd.getSelectedIndex() == 0)) ucmd.select(0);
return;
}
}
public class peopleEvent implements ItemListener {
public void itemStateChanged(ItemEvent evt) {
//System.out.println("Event: "+evt.getStateChange() + " Source: " +
// evt.getSource() + " people: " +people);
switch(evt.getStateChange()) {
case ItemEvent.SELECTED:
if (evt.getSource() == people) {
if (ucmd.getItemCount() == 1) {
ucmd.addItem("person");
ucmd.addItem(" ");
ucmd.addItem("/talk");
ucmd.addItem("/examine");
ucmd.addItem(" ");
ucmd.addItem("/ignore");
//ucmd.addItem("/reduce");
ucmd.addItem("/show");
//ucmd.addItem("/highlight");
ucmd.addItem(" ");
ucmd.addItem("/friend");
ucmd.remove(0);
// ucmd.addItem(" ");
// ucmd.addItem("Notify");
if(!(ucmd.getSelectedIndex() == 0)) ucmd.select(0);
}
sayStatus(l.get(LANG, "_select_function"));
}
break;
case ItemEvent.DESELECTED:
if (evt.getSource() == people) {
doTalk(null);
}
}
}
}
public void actionPerformed(ActionEvent event) {
status.setText("");
input.requestFocus();
if(event.getSource() == input) {
if (connected()) executeInput();
else doConnect(host, port, nick, pass);
return;
}
if(event.getSource() instanceof MenuItem) {
Object arg = (Object)event.getActionCommand();
//System.out.println(arg);
if (((String)arg).startsWith("/")) {
send((String)arg + "\n");
return;
}
if (((String)arg).equals("german")) {
LANG = "de";
send("/set language de\n");
return;
}
if (((String)arg).equals("english")) {
LANG = "en";
send("/set language en\n");
return;
}
if (((String)arg).equals("Start")) {
if (!connected()) doConnect(host, port, nick, pass);
return;
}
if (((String)arg).equals("Stop")) {
send("/quit\n");
return;
}
if (((String)arg).equals("End")) {
doDisconnect();
dispose();
isVisible = false;
return;
}
if (((String)arg).equals("About")) {
sayStatus(getAppletInfo());
return;
}
if (((String)arg).equals("Help")) {
String t = getParameter("URLHELP");
try {
// "http://ve.lava.de:33333/info/"));
app.getAppletContext().showDocument(
new URL("http://help.pages.de/"), "_blank" );
} catch(Exception e) {} // MalformedURLException
return;
}
/* if (((String)arg).equals("Register")) {
if (nick != null) {
String t = getParameter("URLREGISTER");
try {
app.getAppletContext().showDocument(new URL(
getDocumentBase(), (t != null ? t :
("/"+LAYOUT+"/register") ) +"?user="+ nick));
} catch(Exception e) {} // MalformedURLException
}
return;
}
*/
Font f = view.getFont();
try {
int fontSize = Integer.parseInt((String)arg);
view.setFont(new Font(f.getName(), f.getStyle(), fontSize));
}
catch (NumberFormatException e) {
send("/go "+ (String)arg +"\n");
}
return;
}
}
/********************************************************************/
/********************* end of eventhandling ***********************/
/********************************************************************/
public String executeInput() {
/* if (input.echoCharIsSet()) {
((GridBagLayout)this.getLayout()).removeLayoutComponent(input);
input = new TextField("");
input.setEditable(true);
constrain(this, input, 1, 0, 2, 1, GridBagConstraints.BOTH,
GridBagConstraints.CENTER, 1.0, 0.0, 2, 2, 2, 2);
// input.setEchoChar('\0');
show();
} */
if (input.getText().length() > 0) {
String ret = input.getText();
if (send(ret + "\n")) input.setText("");
return ret;
}
else {
view.setText("");
// send("/clear\n");
}
return "";
}
public void haveConnected(String ni) {
prompt.setText(l.get(LANG, "_to_everybody"));
// clear output window
view.setText("");
}
public void haveDisconnected() {
// clear list
people.removeAll();
if (input != null) {
prompt.setText("Nickname:");
if (nick == null) {
input.setText(defNick);
input.selectAll();
input.requestFocus();
} else
input.setText(nick);
}
status.setText("");
}
public void setPeople(String list) {
people.removeAll();
StringTokenizer t = new StringTokenizer(list,"\t\n\r .,:;");
while (t.hasMoreTokens()) { people.add(t.nextToken()); }
}
public void addPeople(String item) {
people.add(item);
}
public void delPeople(String item) {
for (int i = 0; i < people.getItemCount(); i++) {
if (item.equals(people.getItem(i))) {
people.remove(i);
break;
}
}
}
public void sayStatus(String msg) {
if (msg != null) status.setText(msg);
}
protected Socket socket = null;
// protected BufferedReader in = null;
protected DataInputStream in = null;
protected DataOutputStream out = null;
protected Thread engine;
private static final int PORT = 2008;
public boolean connected() {
if (socket != null) return true;
return false;
}
public void doConnect(String ho, int po, String ni, String pa) {
try {
socket= new Socket(ho, po);
out = new DataOutputStream(socket.getOutputStream());
// in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
in = new DataInputStream(socket.getInputStream());
}
catch (IOException e) {
wrapsay(l.get(LANG, "_direct_connection_error")+"("+ e +").\n");
socket = null;
in = null;
out = null;
return;
}
try {
String t = getParameter("DEFPLACE");
if (t != null) send("=_place "+ t +"\n");
if (LAYOUT != null) send("=_layout "+ LAYOUT +"\n");
if (LANG != null) send("=_language "+ LANG +"\n");
if (pa != null) send("=_password "+ pa +"\n");
if (input.getText().length() > 0)
nick = executeInput();
else
send((ni == null ? defNick : ni)+ "\n");
} catch(Exception e) {
wrapsay(l.get(LANG, "_login_error")+"("+ e +").\n");
return;
}
haveConnected(ni);
// potentially throw old thread away
engine = new Thread(this);
engine.start();
}
public void close() {
doDisconnect();
dispose();
isVisible = false;
}
void doDisconnect() {
try {
if (out != null) out.close();
if (in != null) in.close();
if (socket != null) socket.close();
socket = null;
}
catch (IOException e) {
say("== Stop: "+ e +"\n");
}
haveDisconnected();
if (engine != null) {
// this statement could be executed by the thread itself
// therefore nothing important may follow!
if (engine.isAlive()) engine.stop();
}
}
public boolean send(String t) {
if (!connected()) doConnect(host, port, nick, pass);
synchronized (out) {
try {
out.writeBytes(t);
return true;
}
catch (IOException e) {
say("send: "+ e);
}
}
return false;
}
public void run() {
try {
// loop now, waiting for messages from the server
while(true) {
char msgType;
String msg;
do msgType = (char) in.readByte();
while (msgType == '\n' || msgType == '\r' || msgType == ' ');
if (msgType != '|') {
wrapsay(msgType + in.readLine());
} else {
msgType = (char) in.readByte();
msg = in.readLine();
//System.err.println("type: "+msgType);
switch (msgType) {
case '?':
// askPassword() ?
//input.setEchoChar('*');
// fall thru
case '!':
sayStatus(msg);
// wrapsay("* "+ msg);
break;
case '+':
addPeople(msg);
break;
case '-':
delPeople(msg);
break;
case '=':
setPeople(msg);
break;
//se '*':
default:
wrapsay(msgType + msg); // to be renamed into "sayText" ?
break;
}
}
}
}
catch (EOFException e) {
say(l.get(LANG, "_connection_closed")+"\n");
// say("== Verbindung beendet.\n");
socket = null;
doDisconnect();
}
catch (IOException e) {
say(l.get(LANG, "_connection_closed")+".\n (" + e.toString() +")\n");
doDisconnect();
}
try { if (in != null) { in.close(); }
} catch (IOException e) {}
}
}
class Language {
private HashMap textdb;
public Language() {
textdb = new HashMap();
textdb.put("en_connection_closed","== Connection closed.");
textdb.put("en_login_error","== Error attempting to log in.");
textdb.put("en_symlynx","PSYC - simple web chat");
textdb.put("en_direct_connection_error","== Cannot connect directly.");
textdb.put("en_to_everybody","To everybody:");
textdb.put("en_pick_person_from_list","Pick a person from the list first, please.");
textdb.put("en_select_function","Pick a function from the selector box.");
textdb.put("de_connection_closed","== Verbindung beendet.");
textdb.put("de_login_error","== Fehler beim Einloggen.");
textdb.put("de_symlynx","PSYC - einfacher Webchat");
textdb.put("de_direct_connection_error","== Direktverbindung klappt nicht.");
textdb.put("de_to_everybody","An alle:");
textdb.put("de_pick_person_from_list","Wähle zuerst eine Person aus der Liste.");
textdb.put("de_select_function","Wähle eine Funktion aus der Auswahlbox.");
}
public String get(String lang, String code) {
if (textdb.get(lang+code) != "") {
return (String)textdb.get(lang+code);
} else {
return "Error accessing Textdb.";
}
}
}
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