ChatApp/PaginaChat.java

   1 /*
   2  * © 2010 ROBO Design
   3  * http://www.robodesign.ro
   4  *
   5  * $Date: 2010-05-18 20:19:43 +0300 $
   6  */
   7
   8 package ChatApp;
   9
  10 import java.awt.BorderLayout;
  11 import java.awt.Color;
  12 import java.awt.Component;
  13 import java.awt.Container;
  14 import java.awt.Dimension;
  15 import java.awt.GridBagConstraints;
  16 import java.awt.GridBagLayout;
  17 import java.awt.Insets;
  18 import java.awt.event.ActionEvent;
  19 import java.awt.event.ActionListener;
  20 import java.awt.event.KeyAdapter;
  21 import java.awt.event.KeyEvent;
  22 import java.awt.event.KeyListener;
  23 import java.awt.event.MouseAdapter;
  24 import java.awt.event.MouseEvent;
  25 import java.awt.event.MouseListener;
  26 import javax.swing.DefaultListModel;
  27 import javax.swing.JButton;
  28 import javax.swing.JFrame;
  29 import javax.swing.JLabel;
  30 import javax.swing.JList;
  31 import javax.swing.JOptionPane;
  32 import javax.swing.JPanel;
  33 import javax.swing.JScrollPane;
  34 import javax.swing.JSplitPane;
  35 import javax.swing.JTabbedPane;
  36 import javax.swing.JTextField;
  37 import javax.swing.ListSelectionModel;
  38 import javax.swing.border.EmptyBorder;
  39 import javax.swing.event.ChangeEvent;
  40 import javax.swing.event.ChangeListener;
  41 import javax.swing.plaf.basic.BasicButtonUI;
  42
  43 public class PaginaChat extends JPanel implements ActionListener, ChangeListener {
  44   private appMain myApp;
  45   private JLabel infoClienti;
  46   private JLabel infoConexiune;
  47   private JButton btnNume;
  48   private JButton btnDeconectare;
  49   private JButton btnTrimite;
  50   private JList listaClienti;
  51   private JTextField msgField;
  52   private JButton btnTrimiteMesaj;
  53   private JTabbedPane chatTabs;
  54   private PanouMesaje mesajeServer = null;
  55   private JSplitPane tabServer;
  56
  57   public PaginaChat (appMain rootApp) {
  58     super(new GridBagLayout());
  59
  60     myApp = rootApp;
  61
  62     infoConexiune = new JLabel("Conectat la server:port.");
  63
  64     // Numele utilizatorului este afisat cu un buton ce permite utilizatorului
  65     // sa-si schimbe numele daca este apasat.
  66     btnNume = new JButton("Nume:");
  67     btnNume.setToolTipText("Clic pentru schimbarea numelui tau");
  68     btnNume.setDefaultCapable(false);
  69     btnNume.setActionCommand("schimbareNume");
  70     btnNume.addActionListener(this);
  71
  72     // Deconectarea de la server.
  73     btnDeconectare = new JButton("Deconectare");
  74     btnDeconectare.setDefaultCapable(false);
  75     btnDeconectare.setActionCommand("deconectare");
  76     btnDeconectare.addActionListener(this);
  77
  78     // Trimitere de mesaje.
  79     btnTrimite = new JButton("Trimite");
  80     btnTrimite.setDefaultCapable(false);
  81     btnTrimite.setActionCommand("trimiteMesaj");
  82     btnTrimite.addActionListener(this);
  83
  84     msgField = new JTextField();
  85     msgField.addKeyListener(fieldKeyListener);
  86
  87     // lista de clienti conectati la server.
  88
  89     listaClienti = new JList();
  90     infoClienti = new JLabel("Nici un client", JLabel.CENTER);
  91     infoClienti.setLabelFor(listaClienti);
  92     listaClienti.setLayoutOrientation(JList.VERTICAL);
  93     listaClienti.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
  94     listaClienti.addMouseListener(listaClientiMouseListener);
  95     listaClienti.addKeyListener(fieldKeyListener);
  96
  97     JScrollPane scrollListaClienti = new JScrollPane(listaClienti);
  98
  99     listaClienti.ensureIndexIsVisible(0);
 100
 101     // panoul cu lista de clienti.
 102     JPanel panouClienti = new JPanel(new GridBagLayout());
 103     panouClienti.setMinimumSize(new Dimension(100, 100));
 104
 105     GridBagConstraints c = new GridBagConstraints();
 106
 107     c.insets = new Insets(5, 0, 5, 0);
 108     c.fill = c.HORIZONTAL;
 109     c.anchor = c.CENTER;
 110     c.gridx = 0;
 111     c.gridy = 0;
 112     c.weightx = 1;
 113     c.weighty = 0;
 114     panouClienti.add(infoClienti, c);
 115
 116     c.insets = new Insets(0, 0, 0, 0);
 117     c.fill = c.BOTH;
 118     c.gridy = 1;
 119     c.weighty = 1;
 120     panouClienti.add(scrollListaClienti, c);
 121
 122     // un split pane care separa mesajele de pe server si panoul cu lista de
 123     // clienti.
 124     tabServer = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, true, null, panouClienti);
 125     tabServer.setOneTouchExpandable(true);
 126     tabServer.setResizeWeight(0.85);
 127     tabServer.setName("#server");
 128
 129     JLabel tabServerLabel = new JLabel("Server");
 130     tabServerLabel.setOpaque(false);
 131
 132     // taburile de chat: initial doar cu server. mai tarziu pot fi adaugate mai
 133     // multe taburi, pentru discutiile private cu utilizatorii conectati.
 134     chatTabs = new JTabbedPane();
 135     chatTabs.addTab("#server", tabServer);
 136     chatTabs.setSelectedIndex(0);
 137     chatTabs.setTabComponentAt(0, tabServerLabel);
 138     chatTabs.addChangeListener(this);
 139
 140     // adaugam optiunile in interfata
 141     c.insets = new Insets(12, 12, 0, 12);
 142
 143     c.fill = c.HORIZONTAL;
 144     c.anchor = c.WEST;
 145     c.gridx = 0;
 146     c.gridy = 0;
 147     c.gridwidth = 1;
 148     c.gridheight = 1;
 149     c.weightx = 1;
 150     c.weighty = 0;
 151     this.add(infoConexiune, c);
 152
 153     c.fill = c.NONE;
 154     c.anchor = c.EAST;
 155     c.gridx = 2;
 156     c.gridwidth = 1;
 157     c.weightx = 0;
 158     this.add(btnDeconectare, c);
 159
 160     c.insets = new Insets(12, 12, 5, 12);
 161
 162     c.fill = c.BOTH;
 163     c.anchor = c.CENTER;
 164     c.gridx = 0;
 165     c.gridy = 2;
 166     c.gridwidth = c.REMAINDER;
 167     c.gridheight = c.RELATIVE;
 168     c.weightx = 1;
 169     c.weighty = 1;
 170     this.add(chatTabs, c);
 171
 172     // adaugam in interfata optiunile ce tin de schimbarea numelui si de
 173     // trimiterea de mesaje.
 174     JPanel userPanel = new JPanel(new GridBagLayout());
 175
 176     c.insets = new Insets(0, 0, 0, 0);
 177     c.fill = c.NONE;
 178     c.anchor = c.WEST;
 179     c.gridx = 0;
 180     c.gridy = 1;
 181     c.gridwidth = 1;
 182     c.gridheight = 1;
 183     c.weightx = 0;
 184     c.weighty = 0;
 185     userPanel.add(btnNume, c);
 186
 187     c.fill = c.HORIZONTAL;
 188     c.anchor = c.CENTER;
 189     c.gridx = 1;
 190     c.gridwidth = c.RELATIVE;
 191     c.weightx = 1;
 192     userPanel.add(msgField, c);
 193
 194     c.fill = c.NONE;
 195     c.anchor = c.EAST;
 196     c.gridx = 2;
 197     c.gridwidth = 1;
 198     c.weightx = 0;
 199     userPanel.add(btnTrimite, c);
 200
 201     c.insets = new Insets(0, 12, 12, 12);
 202     c.fill = c.HORIZONTAL;
 203     c.anchor = c.CENTER;
 204     c.gridx = 0;
 205     c.gridy = 3;
 206     c.gridwidth = c.REMAINDER;
 207     c.gridheight = 1;
 208     c.weightx = 1;
 209     c.weighty = 0;
 210     this.add(userPanel, c);
 211
 212     this.setMinimumSize(new Dimension(100, 100));
 213   }
 214
 215   // fereastra ce permite utilizatorului sa-si schimbe numele
 216   private void afisareSchimbareNume () {
 217     String numeNou = (String) JOptionPane.showInputDialog(myApp.getMyFrame(), "Nume nou:", "Schimbare nume - ChatApp", JOptionPane.PLAIN_MESSAGE, null, null, myApp.getNumeUtilizator());
 218     if (numeNou == null || numeNou.isEmpty() || numeNou.equals(myApp.getNumeUtilizator())) {
 219       return;
 220     }
 221
 222     numeNou = numeNou.trim();
 223     if (!numeNou.isEmpty()) {
 224       numeNou = numeNou.replaceAll("/\\s+/", "-");
 225     }
 226
 227     DefaultListModel model = (DefaultListModel) listaClienti.getModel();
 228
 229     if (numeNou.equals("#server") || numeNou.equals(myApp.getNumeUtilizator()) || model.contains(numeNou)) {
 230       JOptionPane.showMessageDialog(myApp.getMyFrame(), "Noul nume este invalid.", "Eroare schimbare nume - ChatApp", JOptionPane.ERROR_MESSAGE);
 231       if (!msgField.isFocusOwner()) {
 232         msgField.requestFocusInWindow();
 233       }
 234       return;
 235     }
 236
 237     if (!myApp.schimbareNume(numeNou)) {
 238       JOptionPane.showMessageDialog(myApp.getMyFrame(), "Numele tau nu a putut fi schimbat.", "Eroare schimbare nume - ChatApp", JOptionPane.ERROR_MESSAGE);
 239     }
 240
 241     if (!msgField.isFocusOwner()) {
 242       msgField.requestFocusInWindow();
 243     }
 244   }
 245
 246   // initializarea panoului chat, atunci cand utilizatorul se conecteaza la
 247   // server. aceasta metoda actualizeaza elementele interfetei in functie de
 248   // situatia curenta a conexiunii.
 249   public void initializare () {
 250     JFrame f = myApp.getMyFrame();
 251
 252     if (f.getContentPane() == ((Container) this)) {
 253       return;
 254     }
 255
 256     listaClienti.clearSelection();
 257     listaClienti.setModel(myApp.getListaClienti());
 258     listaClienti.ensureIndexIsVisible(0);
 259     msgField.setText("");
 260
 261     chatTabs.setSelectedIndex(0);
 262     while (chatTabs.getTabCount() > 1) {
 263       chatTabs.remove(1);
 264     }
 265
 266     // afisarea de mesaje trimise de catre server.
 267     mesajeServer = null;
 268     mesajeServer = new PanouMesaje();
 269     tabServer.setLeftComponent((JScrollPane) mesajeServer);
 270
 271     actualizareStareConexiune();
 272
 273     f.setContentPane((Container) this);
 274     f.setMinimumSize(new Dimension(300, 300));
 275     f.setPreferredSize(new Dimension(550, 450));
 276     f.pack();
 277     f.setLocationRelativeTo(null);
 278
 279     tabServer.setDividerLocation(0.75);
 280
 281     myApp.getRootPane().setDefaultButton(null);
 282
 283     if (!msgField.isFocusOwner()) {
 284       msgField.requestFocusInWindow();
 285     }
 286   }
 287
 288   // seteaza/actualizeaza titlul JFrameului aplicatiei si alte texte din Pagina
 289   // Chat.
 290   private void actualizareStareConexiune () {
 291     btnNume.setText(myApp.getNumeUtilizator() + ":");
 292
 293     if (myApp.getServerConectat()) {
 294       infoConexiune.setText("Conectat la " + myApp.getServerAdresa() + ":" + myApp.getServerPort() + ".");
 295       btnDeconectare.setText("Deconectare");
 296       btnNume.setEnabled(true);
 297     } else {
 298       infoConexiune.setText("Deconectat de la " + myApp.getServerAdresa() + ":" + myApp.getServerPort() + ".");
 299       btnDeconectare.setText("Iesire");
 300       btnNume.setEnabled(false);
 301     }
 302
 303     int nr = listaClienti.getModel().getSize();
 304
 305     if (nr == 0) {
 306       infoClienti.setText("Nici un client");
 307     } else if (nr == 1) {
 308       infoClienti.setText("Un client");
 309     } else {
 310       infoClienti.setText(nr + " clienti");
 311     }
 312
 313     myApp.getMyFrame().setTitle("ChatApp - " + myApp.getNumeUtilizator() + " - " + myApp.getServerAdresa() + ":" + myApp.getServerPort());
 314
 315     actualizareTabActiv();
 316   }
 317
 318   // event handler pentru butoanele din panou: schimbare nume, deconectare si
 319   // trimitere mesaj.
 320   public void actionPerformed (ActionEvent ev) {
 321     Object src = ev.getSource();
 322     String cmd = ev.getActionCommand();
 323
 324     if (cmd == null) {
 325       System.err.println("PaginaChat.actionPerformed: cmd == null");
 326       return;
 327
 328     } else if (cmd.equals("trimiteMesaj")) {
 329       trimiteMesaj();
 330
 331     } else if (cmd.equals("schimbareNume")) {
 332       afisareSchimbareNume();
 333
 334     } else if (cmd.equals("inchidereTab") && src != null && src instanceof JButton) {
 335       JButton btn = (JButton) src;
 336       String nume = btn.getName();
 337       if (nume == null) {
 338         return;
 339       }
 340
 341       int t = chatTabs.indexOfTab(nume);
 342       if (t == -1) {
 343         return;
 344       }
 345       chatTabs.remove(t);
 346
 347       if (!msgField.isFocusOwner()) {
 348         msgField.requestFocusInWindow();
 349       }
 350
 351     } else if (cmd.equals("deconectare")) {
 352       myApp.deconectareGUI();
 353     }
 354   }
 355
 356   // event handler pentru schimbarea de taburi.
 357   public void stateChanged (ChangeEvent ev) {
 358     Object src = ev.getSource();
 359     if (!(src instanceof JTabbedPane)) {
 360       return;
 361     }
 362
 363     actualizareTabActiv();
 364
 365     if (msgField.isEnabled() && !msgField.isFocusOwner()) {
 366       msgField.requestFocusInWindow();
 367     }
 368
 369     int t = chatTabs.getSelectedIndex();
 370     if (t != -1) {
 371       String tab = chatTabs.getTitleAt(t);
 372
 373       Component compot = chatTabs.getTabComponentAt(t);
 374       if (compot == null) {
 375         return;
 376       } else if (tab.equals("#server") && compot instanceof JLabel) {
 377         ((JLabel)compot).setForeground(Color.BLACK);
 378       } else if (!tab.equals("#server") && compot instanceof JPanel) {
 379         Component eticheta = ((JPanel)compot).getComponent(0);
 380         if (eticheta != null && eticheta instanceof JLabel) {
 381           ((JLabel)eticheta).setForeground(Color.BLACK);
 382         }
 383       }
 384     }
 385   }
 386
 387   // event handler pentru clickul in lista de utilizatori.
 388   private MouseListener listaClientiMouseListener = new MouseAdapter () {
 389     public void mouseClicked (MouseEvent ev) {
 390       if (ev.getClickCount() != 2) {
 391         return;
 392       }
 393
 394       int c = listaClienti.locationToIndex(ev.getPoint());
 395       if (c != -1) {
 396         activareChatPrivat(c);
 397       }
 398     }
 399   };
 400
 401   // event handler pentru tastare in campul de text msgField si in listaClienti.
 402   private KeyListener fieldKeyListener = new KeyAdapter () {
 403     public void keyPressed (KeyEvent ev) {
 404       if (ev.getKeyCode() != KeyEvent.VK_ENTER) {
 405         return;
 406       }
 407
 408       if (ev.getSource() == listaClienti) {
 409         int i = listaClienti.getSelectedIndex();
 410         if (i != -1) {
 411           activareChatPrivat(i);
 412         }
 413       } else if (ev.getSource() == msgField) {
 414         trimiteMesaj();
 415       }
 416     }
 417   };
 418
 419   // in functie de tabul activ, aceasta metoda activeaza/dezactiveaza campul de
 420   // text si butonul Trimite.
 421   private void actualizareTabActiv () {
 422     boolean allowSend = true;
 423
 424     Component c = chatTabs.getSelectedComponent();
 425     if (c != null) {
 426       String nume = c.getName();
 427       DefaultListModel model = (DefaultListModel) listaClienti.getModel();
 428       if (nume == null || (!nume.equals("#server") && !model.contains(nume))) {
 429         allowSend = false;
 430       }
 431     } else {
 432       allowSend = false;
 433     }
 434
 435     if (myApp.getServerConectat() && allowSend) {
 436       if (!btnTrimite.isEnabled()) {
 437         btnTrimite.setEnabled(true);
 438       }
 439       if (!msgField.isEnabled()) {
 440         msgField.setEnabled(true);
 441       }
 442       if (!msgField.isEditable()) {
 443         msgField.setEditable(true);
 444       }
 445     } else {
 446       if (btnTrimite.isEnabled()) {
 447         btnTrimite.setEnabled(false);
 448       }
 449       if (msgField.isEnabled()) {
 450         msgField.setEnabled(false);
 451       }
 452       if (msgField.isEditable()) {
 453         msgField.setEditable(false);
 454       }
 455     }
 456   }
 457
 458   // metoda permite initierea unui chat privat cu un utilizator, pe baza
 459   // indexului in listaClienti.
 460   private void activareChatPrivat (int c) {
 461     if (c < 0) {
 462       return;
 463     }
 464
 465     DefaultListModel model = (DefaultListModel) listaClienti.getModel();
 466     String nume = (String) model.getElementAt(c);
 467     if (nume == null || nume.equals(myApp.getNumeUtilizator())) {
 468       return;
 469     }
 470
 471     int t = chatTabs.indexOfTab(nume);
 472     if (t == -1) {
 473       t = adaugaChatPrivat(nume);
 474     }
 475
 476     if (t != -1) {
 477       chatTabs.setSelectedIndex(t);
 478       if (msgField.isEnabled() && !msgField.isFocusOwner()) {
 479         msgField.requestFocusInWindow();
 480       }
 481     }
 482   }
 483
 484   // aceasta metoda adauga un tab nou ce poate fi folosit pentru chat privat cu
 485   // un utilizator.
 486   private int adaugaChatPrivat (String nume) {
 487     int i = chatTabs.indexOfTab(nume);
 488     if (i != -1 || nume == null || nume.equals("#server") || nume.equals(myApp.getNumeUtilizator())) {
 489       return -1;
 490     }
 491
 492     JScrollPane mesaje = new PanouMesaje();
 493     mesaje.setName(nume);
 494
 495     JLabel eticheta = new JLabel(nume);
 496     eticheta.setOpaque(false);
 497
 498     JButton btn = new JButton("X");
 499     btn.setUI(new BasicButtonUI());
 500     btn.setContentAreaFilled(false);
 501     btn.setOpaque(false);
 502     btn.setMargin(new Insets(0,0,0,0));
 503     btn.setBorder(new EmptyBorder(new Insets(0,5,0,0)));
 504     btn.setToolTipText("Inchide discutia");
 505     btn.setName(nume);
 506     btn.setActionCommand("inchidereTab");
 507     btn.addActionListener(this);
 508
 509     JPanel panou = new JPanel(new BorderLayout());
 510     panou.setOpaque(false);
 511     panou.add(eticheta, BorderLayout.CENTER);
 512     panou.add(btn, BorderLayout.EAST);
 513
 514     chatTabs.addTab(nume, mesaje);
 515
 516     i = chatTabs.indexOfTab(nume);
 517     if (i != -1) {
 518       chatTabs.setTabComponentAt(i, panou);
 519     } else {
 520       System.err.println("PaginaChat.adaugaChatPrivat('" + nume + "') eroare: indexOfTab(nume) == -1");
 521     }
 522
 523     return i;
 524   }
 525
 526   // metoda permite adaugarea de mesaje in oricare tab
 527   private void adaugaMesajInTab (String numeTab, String msg, String cssClass) {
 528     int t = chatTabs.indexOfTab(numeTab);
 529     int ts = chatTabs.getSelectedIndex();
 530
 531     System.out.println("PaginaChat.adaugaMesajInTab " + numeTab + " t " + t + " ts " + ts + " class " + cssClass + " msg " + msg);
 532
 533     if (numeTab.equals("#server")) {
 534       mesajeServer.adaugaMesaj(msg, cssClass);
 535       if (t == -1) {
 536         return;
 537       }
 538
 539       if (ts != t) {
 540         Component compot = chatTabs.getTabComponentAt(t);
 541         if (compot == null || !(compot instanceof JLabel)) {
 542           return;
 543         }
 544         ((JLabel)compot).setForeground(Color.BLUE);
 545       }
 546     } else {
 547       if (t == -1) {
 548         if (cssClass.equals("mesaj")) {
 549           t = adaugaChatPrivat(numeTab);
 550           if (t == -1) {
 551             return;
 552           }
 553         } else {
 554           return;
 555         }
 556       }
 557
 558       Component compom = chatTabs.getComponentAt(t);
 559       if (compom == null || !(compom instanceof PanouMesaje)) {
 560         return;
 561       }
 562
 563       PanouMesaje panoum = (PanouMesaje) compom;
 564       panoum.adaugaMesaj(msg, cssClass);
 565
 566       if (ts != t) {
 567         Component compot = chatTabs.getTabComponentAt(t);
 568         if (compot == null || !(compot instanceof JPanel)) {
 569           return;
 570         }
 571         Component compoe = ((JPanel) compot).getComponent(0);
 572         if (compoe != null && compoe instanceof JLabel) {
 573           ((JLabel)compoe).setForeground(Color.BLUE);
 574         }
 575       }
 576     }
 577   }
 578
 579   // metoda este chemata cand utilizatorul trimite un mesaj.
 580   private void trimiteMesaj () {
 581     String msg = msgField.getText();
 582     if (msg.trim().isEmpty()) {
 583       return;
 584     }
 585
 586     DefaultListModel model = (DefaultListModel) listaClienti.getModel();
 587     String catre = chatTabs.getSelectedComponent().getName();
 588
 589     if (catre == null || catre.equals(myApp.getNumeUtilizator())) {
 590       return;
 591     } else if (catre.equals("#server") || model.contains(catre)) {
 592       myApp.trimiteMesaj(catre, msg);
 593     }
 594
 595     msgField.setText("");
 596     if (!msgField.isFocusOwner()) {
 597       msgField.requestFocusInWindow();
 598     }
 599   }
 600
 601   public void ev_mesajTrimis (String catre, String msg) {
 602     if (catre == null || catre.trim().isEmpty() || msg == null || msg.trim().isEmpty()) {
 603       return;
 604     }
 605
 606     String msgf = "<span class='nume'>" + htmlEscape(myApp.getNumeUtilizator()) + "</span>: " + htmlEscape(msg);
 607
 608     adaugaMesajInTab(catre, msgf, "mesaj");
 609   }
 610
 611   // urmeaza o serie de metode invocate atunci cand un mesaj este primit de la
 612   // server.
 613
 614   public void ev_conectareClient (String nume) {
 615     actualizareStareConexiune();
 616
 617     String msg = "<span class='nume'>" + htmlEscape(nume) + "</span> s-a conectat la server.";
 618
 619     adaugaMesajInTab("#server", msg, "conectat");
 620     adaugaMesajInTab(nume, msg, "conectat");
 621   }
 622
 623   public void ev_deconectareClient (String nume) {
 624     actualizareStareConexiune();
 625
 626     if (nume.equals("#server")) {
 627       adaugaMesajInTab(nume, "Serverul a inchis conexiunea.", "deconectat");
 628       return;
 629     }
 630
 631     String msg = "<span class='nume'>" + htmlEscape(nume) + "</span> s-a deconectat de la server.";
 632     adaugaMesajInTab("#server", msg, "deconectat");
 633     adaugaMesajInTab(nume, msg, "deconectat");
 634   }
 635
 636   public void ev_schimbareNume (String numeVechi, String numeNou) {
 637     if (numeNou.equals(myApp.getNumeUtilizator())) {
 638       btnNume.setText(numeNou + ":");
 639       myApp.getMyFrame().setTitle("ChatApp - " + myApp.getNumeUtilizator() + " - " + myApp.getServerAdresa() + ":" + myApp.getServerPort());
 640     }
 641
 642     String msg = "<span class='nume'>" + htmlEscape(numeVechi) + "</span> si-a schimbat numele in <span class='nume'>" + htmlEscape(numeNou) + "</span>.";
 643     adaugaMesajInTab("#server", msg, "schimbareNume");
 644     adaugaMesajInTab(numeVechi, msg, "schimbareNume");
 645
 646     int t = chatTabs.indexOfTab(numeVechi);
 647     int t2 = chatTabs.indexOfTab(numeNou);
 648     if (t2 != -1) {
 649       adaugaMesajInTab(numeNou, msg, "schimbareNume");
 650     }
 651
 652     if (t != -1 && t2 == -1) {
 653       Component compom = chatTabs.getComponentAt(t);
 654       if (compom == null || !(compom instanceof PanouMesaje)) {
 655         return;
 656       }
 657
 658       ((PanouMesaje) compom).setName(numeNou);
 659       chatTabs.setTitleAt(t, numeNou);
 660
 661       Component compot = chatTabs.getTabComponentAt(t);
 662       if (compot == null || !(compot instanceof JPanel)) {
 663         return;
 664       }
 665
 666       Component eticheta = ((JPanel) compot).getComponent(0);
 667       if (eticheta != null && eticheta instanceof JLabel) {
 668         ((JLabel) eticheta).setText(numeNou);
 669       }
 670
 671       Component btn = ((JPanel) compot).getComponent(1);
 672       if (btn != null && btn instanceof JButton) {
 673         ((JButton) btn).setName(numeNou);
 674       }
 675     }
 676
 677     actualizareTabActiv();
 678   }
 679
 680   public void ev_mesajPrimit (String dela, String catre, String msg) {
 681     if (dela.equals("#server") || dela.equals(myApp.getNumeUtilizator())) {
 682       System.out.println("PaginaChat.ev_mesajPrimit dela = " + dela);
 683       return;
 684     }
 685
 686     System.out.println("PaginaChat.ev_mesajPrimit dela " + dela + " catre " + catre + " msg " + msg);
 687
 688     String msgf = "<span class='nume'>" + htmlEscape(dela) + "</span>: " + htmlEscape(msg);
 689
 690     if (catre.equals("#server")) {
 691       adaugaMesajInTab(catre, msgf, "mesaj");
 692     } else if (catre.equals(myApp.getNumeUtilizator())) {
 693       adaugaMesajInTab(dela, msgf, "mesaj");
 694     }
 695   }
 696
 697   public void ev_listaClienti () {
 698     actualizareStareConexiune();
 699   }
 700
 701   private String htmlEscape (String htmlStr) {
 702     return htmlStr.replaceAll("<", "&lt;").replaceAll(">", "&gt;");
 703   }
 704 }