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Thomas Schaller
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355
Quellcodes/iud_key_rsachat/ManInTheMiddle.java
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355
Quellcodes/iud_key_rsachat/ManInTheMiddle.java
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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import javax.swing.event.*;
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import java.util.*;
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import java.awt.image.BufferedImage;
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import java.math.BigInteger;
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/**
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*
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* Beschreibung
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*
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*
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* @version 1.1 vom 30.01.2020
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* @author Thomas Schaller
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* Version 1.1: Hash-Funkion ausgetauscht, damit Hashes unterschiedlicher, Ö/P-Schlüssel in der gleichen Farbe
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*/
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import java.util.Timer;
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public class ManInTheMiddle extends ChatClient implements MySocketListener {
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// Anfang Attribute
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// Ende Attribute
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public ManInTheMiddle(String title) {
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// Frame-Initialisierung
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super(title);
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jTFName.setText("ManInTheMiddle");
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jTFName.setEnabled(false);
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Timer timer = new Timer();
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timer.scheduleAtFixedRate(new TimerTask() {
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@Override
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public void run() {
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updateTimes();
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}
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}, 1000, 1000);
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} // end of public ManInTheMiddle
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// Anfang Methoden
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public void jBVerbinden_ActionPerformed(ActionEvent evt) {
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String a = jTFAdress.getText();
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int p = jNFPort.getInt();
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if (client != null && client.isAktiv()) {
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jTFAdress.setEnabled(true);
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jNFPort.setEnabled(true);
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jBVerbinden.setText("Verbinden");
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client.trenneVerbindung();
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} else {
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client = new MySocket(a, p, this);
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if (client.isAktiv()) {
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jTFAdress.setEnabled(false);
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jNFPort.setEnabled(false);
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jBVerbinden.setText("Trennen");
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client.sendeNachricht("mitm:");
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}
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} // end of if-else
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} // end of jBVerbinden_ActionPerformed
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public void jBSend_ActionPerformed(ActionEvent evt) {
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if (client != null && client.isAktiv()) {
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JMyButton button = (JMyButton) evt.getSource();
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if (button.getEmpfaenger()!=null) {
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button.getNachricht().setEmpfaenger((String) button.getEmpfaenger().getSelectedItem());
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} // end of if
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sendMessage(button.getNachricht());
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this.updateNachrichtenListe();
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} else {
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jTFAdress.setEnabled(true);
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jNFPort.setEnabled(true);
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jBVerbinden.setEnabled(true);
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} // end of if
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} // end of jBSend_ActionPerformed
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private void sendMessage(Nachricht n) {
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String b = "mess:"+n.getAbsender()+":"+n.getEmpfaenger()+":"+Base64.encode(n.getInhalt())+":"+Base64.encode(n.getHashCode());
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n.setStopped(false);
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n.setSended(true);
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client.sendeNachricht(b);
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}
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public void nachrichtEmpfangen(MySocket client) {
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String s = client.holeNachricht();
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String[] ss = s.split(":");
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if (ss[0].equals("user")) {
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kontakte.add(ss[1]);
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Nachricht n = new Nachricht("Server","alle","Neuer User: "+ss[1]);
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n.setSended(true);
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nachrichten.add(0,n);
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this.updateNachrichtenListe();
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}
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if(ss[0].equals("mess")) {
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String hash;
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if (ss.length==5) {
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hash = ss[4];
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} else {
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hash = "";
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}// end of if
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Nachricht n = new Nachricht(ss[1],ss[2],Base64.decode(ss[3]),Base64.decode(hash));
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nachrichten.add(0,n);
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this.updateNachrichtenListe();
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} // end of if String s = client.holeNachricht();
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}
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protected void makeMessagePopup(MouseEvent evt, Nachricht n) {
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new MessagePopup2(evt, this, n, keys);
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}
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public void verbindungBeendet(MySocket client) {
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jTFAdress.setEnabled(true);
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jNFPort.setEnabled(true);
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jBVerbinden.setText("Verbinden");
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client = null;
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}
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public void jBStopped_ActionPerformed(ActionEvent evt) {
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JMyButton button = (JMyButton) evt.getSource();
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Nachricht n = button.getNachricht();
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n.setStopped(true);
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} // end of jBSend_ActionPerformed
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public void updateTimes() {
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int i=0;
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Component[] c = jp.getComponents();
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int cnr = 0;
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for (Nachricht n: nachrichten ) {
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if (n.getRestzeit()>0) {
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GridBagConstraints c2 = gbl.getConstraints(c[cnr]);
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while (cnr < c.length-1 && (c2.gridx != 4 || c2.gridy!=i+1)) {
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cnr++;
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c2 = gbl.getConstraints(c[cnr]);
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} // end of while
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JPanel p = (JPanel) (c[cnr]);
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if (p.getComponents()[1] instanceof JLabel) {
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JLabel l = (JLabel) (p.getComponents()[1]);
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l.setText(""+n.getRestzeit()+" sek");
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} // end of if
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} else {
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if (!n.getSended() && !n.getStopped() && !n.getEmpfaenger().equals("")) {
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sendMessage(n);
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updateNachrichtenListe();
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break;
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}// end of if-else// end of if
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}
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i++;
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} // end of for
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}
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public void updateNachrichtenListe() {
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GridBagConstraints c = new GridBagConstraints();
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while (jp.getComponentCount()>1) {
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jp.remove(1);
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} // end of while
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//jp.removeAll();
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if (jp.getComponentCount()==0) {
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JPanel eingabe = new JPanel();
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eingabe.setBorder(BorderFactory.createBevelBorder(0));
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eingabe.setLayout(null);
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eingabe.setBackground(new Color(250,255,200));
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eingabe.setOpaque(true);
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eingabe.setPreferredSize(new Dimension(150,60));
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c.gridx=0; c.gridy = 0;
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c.gridwidth=5;
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c.fill = GridBagConstraints.BOTH;
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c.weightx = 1.0;
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jTFNachricht.setBounds(100,20,800,20);
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JLabel nn = new JLabel();
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nn.setText("Neue Nachricht");
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nn.setBounds(2,20,90,20);
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eingabe.add(nn);
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eingabe.add(jTFNachricht);
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jp.add(eingabe,c);
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}
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c.weightx=0;
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c.gridwidth=1;
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int xx = 1;
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JLabel name = null;
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for (Nachricht n : nachrichten) {
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if (n.getKeys().size()>0 && name != null) {
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GridBagConstraints c2 = gbl.getConstraints(name);
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c2.gridheight++;
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gbl.setConstraints(name,c2);
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} else {
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name = new JLabel();
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name.setText("<html>Von "+n.getAbsender()+"</html>");
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name.setBorder(BorderFactory.createBevelBorder(0));
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name.setBackground(new Color(250,255,200));
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name.setOpaque(true);
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c.gridx=0; c.gridy = xx;
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c.fill = GridBagConstraints.BOTH;
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jp.add(name,c);
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} // end of if-else
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JPanel nnn = new JPanel();
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nnn.setLayout(new GridBagLayout());
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nnn.setBorder(BorderFactory.createBevelBorder(0));
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nnn.setBackground(new Color(250,255,200));
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nnn.setOpaque(true);
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PicPanel pp = new PicPanel(n.getKeys());
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pp.setPreferredSize(new Dimension(n.getKeys().size()*32,60));
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pp.setBackground(new Color(250,255,200));
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JMyLabel nachricht = new JMyLabel(n,"");
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if (n.getInhaltString().trim().length()>65) {
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nachricht.setText("<html>"+n.getInhaltString().trim().substring(0,62)+"...</html>");
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} else {
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nachricht.setText("<html>"+n.getInhaltString().trim()+"</html>");
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} // end of if-else
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c.gridx=0; c.gridy = 0;
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c.weightx=1.0; c.weighty= 0;
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nnn.add(nachricht,c);
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c.gridx=1; c.gridy = 0;
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c.weightx=0.0; c.weighty= 0;
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nnn.add(pp,c);
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c.gridx=1; c.gridy = xx;
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c.weightx = 1.0;
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jp.add(nnn,c);
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nnn = new JPanel();
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nnn.setLayout(new GridBagLayout());
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nnn.setBorder(BorderFactory.createBevelBorder(0));
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nnn.setBackground(new Color(250,255,200));
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nnn.setOpaque(true);
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pp = new PicPanel(n.getHashKeys());
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pp.setPreferredSize(new Dimension(n.getHashKeys().size()*32,60));
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pp.setBackground(new Color(250,255,200));
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String hc = new String(n.getHashCode());
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if (hc.trim().length()>15) {
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hc = hc.substring(0,15)+"...";
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} //end of if-else
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JMyLabel hash = new JMyLabel(n, hc);
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c.gridx=0; c.gridy = 0;
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c.weightx=1.0; c.weighty= 0;
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nnn.add(hash,c);
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c.gridx=1; c.gridy = 0;
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c.weightx=0.0; c.weighty= 0;
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nnn.add(pp,c);
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c.gridx=2; c.gridy = xx;
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c.weightx = 0.0;
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jp.add(nnn,c);
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JPanel abspanel = new JPanel();
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abspanel.setPreferredSize(new Dimension(150,40));
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abspanel.setBorder(BorderFactory.createBevelBorder(0));
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abspanel.setBackground(new Color(250,255,200));
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abspanel.setOpaque(true);
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abspanel.setLayout(new FlowLayout());
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if (n.getEmpfaenger().equals("") && n.getSended()==false ) {
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String[] stringlist = new String[100];
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JComboBox cb = new JComboBox(kontakte.toArray(stringlist));
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abspanel.add(cb);
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ImageIcon water = new ImageIcon("arrow.png");
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JMyButton button = new JMyButton(n, cb, water);
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button.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent evt) {
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jBSend_ActionPerformed(evt);
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}
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});
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abspanel.add(button);
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} else {
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abspanel.add(new JLabel("an "+n.getEmpfaenger()));
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if (n.getStopped() && n.getSended()==false) {
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ImageIcon water = new ImageIcon("arrow.png");
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JMyButton button = new JMyButton(n,null,water);
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button.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent evt) {
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jBSend_ActionPerformed(evt);
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}
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});
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abspanel.add(button);
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} else {
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if (n.getRestzeit()>0) {
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abspanel.add(new JLabel(" "+n.getRestzeit()+" sek"));
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ImageIcon water = new ImageIcon("stop.png");
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JMyButton button = new JMyButton(n,null,water);
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button.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent evt) {
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jBStopped_ActionPerformed(evt);
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}
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});
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abspanel.add(button);
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} // end of if
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}
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}
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c.gridx=4; c.gridy = xx;
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c.weightx = 0.0;
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jp.add(abspanel,c);
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xx++;
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}
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JPanel dummy = new JPanel();
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dummy.setBorder(BorderFactory.createBevelBorder(0));
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dummy.setLayout(null);
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dummy.setBackground(new Color(250,255,200));
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dummy.setOpaque(true);
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dummy.setPreferredSize(new Dimension(150,60));
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c.gridx=0; c.gridy = xx;
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c.gridwidth=5;
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c.fill = GridBagConstraints.BOTH;
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c.weightx = 1.0;
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c.weighty = 1.0;
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jp.add(dummy,c);
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jp.revalidate();
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jp.repaint();
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}
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// Ende Methoden
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public static void main(String[] args) {
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new ManInTheMiddle("ManInTheMiddle");
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} // end of main
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} // end of class ManInTheMiddle
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