j1upuCgr

1/**
2 * @author Marcel Bieler
3 */
4
5package userInterface;
6
7import java.awt.BorderLayout;
8import java.awt.EventQueue;
9import java.awt.event.MouseAdapter;
10import java.awt.event.MouseEvent;
11import java.io.*;
12import java.net.*;
13import java.util.*;
14import javax.swing.*;
15import com.jgoodies.forms.factories.FormFactory;
16import com.jgoodies.forms.layout.ColumnSpec;
17import com.jgoodies.forms.layout.FormLayout;
18import com.jgoodies.forms.layout.RowSpec;
19
20
21import appLogic.Article;
22import appLogic.AuctionArticle;
23import appLogic.Bid;
24import appLogic.Category;
25import appLogic.Message;
26import appLogic.SalesItem;
27import appLogic.User;
28import appLogicAccess.MyTableModel;
29
30import java.awt.event.ActionListener;
31import java.awt.event.ActionEvent;
32import javax.swing.event.ListSelectionListener;
33import javax.swing.event.ListSelectionEvent;
34import javax.swing.table.TableColumn;
35import javax.swing.table.TableModel;
36
37public class GUI {
38
39	private ArrayList<Article> articleList = new ArrayList<Article>();
40	private ArrayList<User> userList = new ArrayList<User>();
41	private ArrayList<Message> messageList = new ArrayList<Message>();
42	private ArrayList<Category> categoryList = new ArrayList<Category>();
43	private ArrayList<Category> changeCategoryList = new ArrayList<Category>();
44
45	private Article editArticle;
46
47	private boolean loginBool;
48	private boolean regBool;
49	private boolean changeBool;
50	private boolean deleteBool;
51	private boolean setNewPrice;
52	private boolean changeSoldFlagBool;
53	private boolean buyBool;
54	private boolean bidBool;
55	private boolean lockBool;
56	private boolean unlockBool;
57	private boolean deleteArticleBool;
58
59	private double currentlyHightestBidOnArticle;
60
61	private int newSetArticleNo = -1;
62
63	private ObjectOutputStream oos = null;
64	private ObjectInputStream ois = null;
65	private Socket socket = null;
66
67	private String usernameTempSaved = null;
68	private String befehl = null;
69	private String antwort = null;
70
71	private DefaultComboBoxModel categoryDataModel;
72	private DefaultListModel currentCategorySelectionListModel;
73	private DefaultListModel currentArticleCategoriesListModel;
74	private DefaultListModel categoriesListModel;
75
76	private JButton btnLogin;
77	private JButton btnLogout;
78	private JButton btnRegister;
79	private JButton btnAddCategory;
80	private JButton btnAddNewCategory;
81	private JButton btnInsertArticle;
82	private JButton btnRemoveSelectedCategory;
83	private JButton editArticleAddCategoryButton;
84	private JButton changeArticleDataAddNewCategoryButton;
85	private JButton btnSetSelectedArticle;
86	private JButton btnDeleteSelectedArticle;
87	private JButton btnSearch;
88	private JButton btnRefreshCategories;
89	private JButton btnBuyArticle;
90	private JButton btnBidOnArticle;
91	private JButton btnChangeBid;
92	private JButton btnShowArticleDetails;
93	//button will most likely be deleted
94//	private JButton btnShowSelectedCategory;
95	private JButton btnUpdateArticleList;
96	private JButton btnEditSelectedArticle;
97	private JButton btnSetNewPrice;
98	private JButton btnAddToDescription;
99	private JButton btnShowMessages;
100	private JButton btnHideOldMessages;
101	private JButton btnChangeOk;
102	private JButton changeArticleDataRemoveSelectedCategoryButton;
103	private JButton btnAufDeutschBitte;
104	private JButton btnDelete;
105	private JButton btnLock;
106	private JButton btnUnlock;
107	private JButton btnShowArticles;
108	private JButton btnShowUsers;
109	private JButton btnShowAllMessages;
110	private JButton btnDeleteArticle;
111
112	private JCheckBox chckbxShowPhonenoOn;
113	private JCheckBox chckbxShowEmailOn;
114	private JComboBox comboBoxChangeUserdata;
115	private JComboBox comboBox;
116	private JComboBox categorySelectionComboBox;
117	private JComboBox editArticleCategorySelectionComboBox;
118	private JComboBox searchMethodSelectionComboBox;
119
120	private JFrame frame;
121
122	private JLabel lblTitle;
123	private JLabel lblCurrentPrice;
124	private JLabel lblAuctionEnd;
125	private JLabel lblDescription;
126	private JLabel lblArticleTitleHere;
127	private JLabel lblCurrentPriceHere;
128	private JLabel lblAuctionEndAnd;
129	private JLabel lblArticleno;
130	private JLabel lblSoldBy;
131	private JLabel lblPhoneno;
132	private JLabel lblEmail;
133	private JLabel lblNoOfBids;
134	private JLabel lblDisplayNoOfBids;
135	private JLabel lblArticlenoHere;
136	private JLabel lblVendorNameHere;
137	private JLabel lblPhonenoHere;
138	private JLabel lblEmailHere;
139	private JLabel lblArticlesInSelected;
140	private JLabel lblYourMaxBid;
141	private JLabel lblMaxBidHere;
142	private JLabel lblChange;
143	private JLabel lblTo;
144	private JLabel lblFormatYymmdd;
145	private JLabel lblSelectedCategories;
146	private JLabel lblMultiplesOf;
147	private JLabel changeArticleDataSelectedCategoriesLabel;
148	private JLabel changeSuccessLabel;
149	private JLabel welcomeLabel;
150
151	private JList currentCategorySelectionList;
152	private JList currentArticleCategoriesList;
153	private JList categoryListBuyTab;
154
155	private JPanel adminPanel;
156	private JPanel adminControlsPanel;
157	private JPanel showMyArticlesPanel;
158	private JPanel articleDetailsPanel;
159	private JPanel buyTabPanel;
160	private JPanel sellTabPanel;
161	private JPanel messagePanel;
162	private JPanel userControlCenterPanel;
163	private JPanel adminControlsPanel2;
164	private JPanel loginPanel;
165
166	private JScrollPane articleDescriptionTextAreaScrollPane;
167	private JScrollPane currentCategorySelectionListScrollPane;
168	private JScrollPane showMyArticlesTableScrollPane;
169	private JScrollPane txtrCurrentDescriptionScrollPane;
170	private JScrollPane addToCurrentDescriptionScrollPane;
171	private JScrollPane currentArticleCategoriesListScrollPane;
172	private JScrollPane messageTableScrollPane;
173	private JScrollPane categoryListBuyTabScrollPane;
174	private JScrollPane articleTableBuyTabScrollPane;
175	private JScrollPane articleDescriptionTextAreaBuyTabScrollPane;
176	private JScrollPane adminArticleTableScrollPane;
177
178	private JTabbedPane tabbedPane;
179	private JTable showMyArticlesTable;
180	private JTable messageTable;
181	private JTable articleTableBuyTab;
182	private JTable adminArticleTable;
183
184	private JTextArea articleDescriptionTextArea;
185	private JTextArea txtrCurrentDescription;
186	private JTextArea txtrAddToCurrentDescription;
187	private JTextArea articleDescriptionTextAreaBuyTab;
188
189	private JTextField txtUsernameToEdit;
190	private JTextField txtUsername;
191	private JTextField txtPassword;
192	private JTextField txtArticleTitle;
193	private JTextField txtChangeNewValue;
194	private JTextField txtNewCategory;
195	private JTextField txtPrice;
196	private JTextField txtAuctionEndDate;
197	private JTextField changeArticleDataNewCategoryTextField;
198	private JTextField changeArticleDataChangePriceTextField;
199	private JTextField txtEnterSearchTerm;
200
201	/**
202	 * Launch the application.
203	 */
204	public static void main(String[] args) {
205		EventQueue.invokeLater(new Runnable() {
206			public void run() {
207				try {
208					GUI window = new GUI();
209					window.frame.setVisible(true);
210				} catch (Exception e) {
211					e.printStackTrace();
212				}
213			}
214		});
215	}
216
217	/**
218	 * Create the application.
219	 * 
220	 * @throws Exception
221	 */
222	public GUI() {
223		Messages.changeLanguage();
224		initialize();
225	}
226
227	/**
228	 * connects to the server. ip is hardcoded. first creates a new socket and
229	 * then opens an objectinputstream and an objectoutputstream
230	 */
231	public void connectToServer() {
232		byte[] addr = new byte[4];
233
234		addr[0] = (byte) 172;
235		addr[1] = (byte) 20;
236		addr[2] = (byte) 10;
237		addr[3] = (byte) 2;
238
239
240
241
242		InetAddress host;
243		try {
244			host = InetAddress.getByAddress(addr);
245			socket = new Socket(host.getHostName(), 1234);
246			oos = new ObjectOutputStream(socket.getOutputStream());
247			ois = new ObjectInputStream(socket.getInputStream());
248		} catch (UnknownHostException e1) {
249			JOptionPane
250					.showMessageDialog(
251							null,
252							Messages.getString("GUI.FailedToConnect"), //$NON-NLS-1$
253							Messages.getString("GUI.ConnectionProblem"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
254		} catch (IOException e) {
255			JOptionPane
256					.showMessageDialog(
257							null,
258							Messages.getString("GUI.FailedToConnect2"), //$NON-NLS-1$
259							Messages.getString("GUI.ConnectionProblem2"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
260		}
261	}
262
263	/**
264	 * converts a time, represented by a gregoriancalendar, to a string that
265	 * indicated the remaining time from now (systemtime) until the given date.
266	 * 
267	 * @param cal2
268	 *            the gregoriancalendar representation of an auction end date
269	 * @return a textual representation of the date difference from systemtime
270	 *         until given calendar. format: XXT: HH : MM : SS
271	 */
272	public String dateDifferenceToString(GregorianCalendar cal2) {
273		GregorianCalendar cal1 = new GregorianCalendar();
274		String timeString = new String();
275		// cal1 = current time, cal1 = auction end
276		long differenceSeconds = cal2.getTimeInMillis()
277				- cal1.getTimeInMillis();
278		int day = 0;
279		int hour = 0;
280		int minute = 0;
281		int second = 0;
282		long longday = 1000 * 60 * 60 * 24;
283		long longhour = 1000 * 60 * 60;
284		long longminute = 1000 * 60;
285		long longsecond = 1000;
286
287		while (differenceSeconds > 999) {
288			if (differenceSeconds - longsecond >= 0) {
289				if (differenceSeconds - longminute >= 0) {
290					if (differenceSeconds - longhour >= 0) {
291						if (differenceSeconds - longday >= 0) {
292							day++;
293							differenceSeconds -= longday;
294							continue;
295						}
296						hour++;
297						differenceSeconds -= longhour;
298						continue;
299					}
300					minute++;
301					differenceSeconds -= longminute;
302					continue;
303				}
304				second++;
305				differenceSeconds -= longsecond;
306				continue;
307			}
308		}
309		// if 1000ms are left add a second
310		if (differenceSeconds < 1000 && differenceSeconds > 499) {
311			second++;
312		}
313
314		if (second >= 60) {
315			minute++;
316			second -= 60;
317			if (minute >= 60) {
318				hour++;
319				minute -= 60;
320				if (hour >= 24) {
321					day++;
322					hour -= 24;
323				}
324			}
325		}
326
327		String daystring;
328		if (day > 9 && day < 100) {
329			daystring = "0" + String.valueOf(day); //$NON-NLS-1$
330		} else if (day < 10) {
331			daystring = "00" + String.valueOf(day); //$NON-NLS-1$
332		} else {
333			daystring = String.valueOf(day);
334		}
335
336		String hourstring;
337		if (hour > 9) {
338			hourstring = String.valueOf(hour);
339		} else {
340			hourstring = "0" + String.valueOf(hour); //$NON-NLS-1$
341		}
342
343		String minutestring;
344		if (minute > 9) {
345			minutestring = String.valueOf(minute);
346		} else {
347			minutestring = "0" + String.valueOf(minute); //$NON-NLS-1$
348		}
349
350		String secondstring;
351		if (second > 9) {
352			secondstring = String.valueOf(second);
353		} else {
354			secondstring = "0" + String.valueOf(second); //$NON-NLS-1$
355		}
356
357		timeString = daystring + "d " + hourstring + "h " + minutestring + "m " //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
358				+ secondstring + "s"; //$NON-NLS-1$
359
360		return timeString;
361	}
362
363	/**
364	 * converts the given gregoriancalendar into a textual representation
365	 * (YY.MM.DD or YY.MM.DD HH:MM:SS) of the saved date.
366	 * 
367	 * @param cal
368	 *            the gregoriancalendar to be transformed into a String
369	 * @param method
370	 *            decides if the return String represents the date with or
371	 *            without time
372	 * @return String representation of input calendar
373	 */
374	public String gregorianToString(GregorianCalendar cal, String method) {
375		// year to string. cut first 2 digits. thanks crappy dateformat...
376		String year = String.valueOf(cal.get(Calendar.YEAR)).substring(2);
377
378		// month to string. if single digit add leading zero
379		String month = new String();
380		int intmonth = cal.get(Calendar.MONTH);
381		// january is 0 so month+1 is needed
382		intmonth++;
383		if (intmonth < 10) {
384			month = "0" + String.valueOf(intmonth); //$NON-NLS-1$
385		} else {
386			month = String.valueOf(intmonth);
387		}
388
389		// day to string. if single digit add leading zero
390		String day = new String();
391		int intday = cal.get(Calendar.DATE);
392		if (intday < 10) {
393			day = "0" + String.valueOf(intday); //$NON-NLS-1$
394		} else {
395			day = String.valueOf(intday);
396		}
397
398		// if the long version is needed
399		if (method.equals("long")) { //$NON-NLS-1$
400			String hour = new String();
401			int conversionHour = cal.get(Calendar.HOUR_OF_DAY);
402			if (conversionHour < 10) {
403				hour = "0" + String.valueOf(conversionHour); //$NON-NLS-1$
404			} else {
405				hour = String.valueOf(conversionHour);
406			}
407
408			String minute = new String();
409			int conversionMinute = cal.get(Calendar.MINUTE);
410			if (conversionMinute < 10) {
411				minute = "0" + String.valueOf(conversionMinute); //$NON-NLS-1$
412			} else {
413				minute = String.valueOf(conversionMinute);
414			}
415
416			String second = new String();
417			int conversionSecond = cal.get(Calendar.SECOND);
418			if (conversionSecond < 10) {
419				second = "0" + String.valueOf(conversionSecond); //$NON-NLS-1$
420			} else {
421				second = String.valueOf(conversionSecond);
422			}
423
424			// join year, month, day, hour, minute and second
425			String date = year + "." + month + "." + day + " " + hour + ":" //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
426					+ minute + ":" + second; //$NON-NLS-1$
427
428			return date;
429
430			// if the long version is not required, take the short one
431		} else {
432			// join year, month and day
433			String date = year + "." + month + "." + day; //$NON-NLS-1$ //$NON-NLS-2$
434
435			return date;
436		}
437	}
438
439	public void transmissionError(String cause) {
440		JOptionPane.showMessageDialog(null, cause,
441				Messages.getString("GUI.ThereWasAProblem"), //$NON-NLS-1$
442				JOptionPane.WARNING_MESSAGE);
443	}
444
445	/**
446	 * analyzes the input command and then transfers it to the server, where it
447	 * is processed. then the return value sent by the server is saved.
448	 * 
449	 * @param command
450	 *            command to be executed
451	 */
452	public void execute(String command) {
453		try {
454			if (command.startsWith("LOGIN ")) { //$NON-NLS-1$
455				if (oos != null) {
456					oos.writeObject(command);
457
458					if ((Boolean) ois.readObject()) {
459						Exception shouldNotHappen = (Exception) ois
460								.readObject();
461						transmissionError(shouldNotHappen.getMessage());
462						loginBool = false;
463					} else {
464						loginBool = (Boolean) ois.readObject();
465					}
466
467				}
468
469			} else if (command.startsWith("INSERT USER ")) { //$NON-NLS-1$
470				if (oos != null) {
471					oos.writeObject(command);
472					
473					if ((Boolean) ois.readObject()) {
474						Exception shouldNotHappen = (Exception) ois
475								.readObject();
476						transmissionError(shouldNotHappen.getMessage());
477						regBool = false;
478					} else {
479						regBool = (Boolean) ois.readObject();
480					}
481
482				}
483
484			} else if (command.startsWith("CHANGE USER ")) { //$NON-NLS-1$
485				if (oos != null) {
486					oos.writeObject(command);
487
488					if ((Boolean) ois.readObject()) {
489						Exception shouldNotHappen = (Exception) ois
490								.readObject();
491						transmissionError(shouldNotHappen.getMessage());
492						changeBool = false;
493					} else {
494						changeBool = (Boolean) ois.readObject();
495					}
496
497				}
498
499			} else if (command.startsWith("DELETE USER")) { //$NON-NLS-1$
500				if (oos != null) {
501					oos.writeObject(command);
502
503					if ((Boolean) ois.readObject()) {
504						Exception shouldNotHappen = (Exception) ois
505								.readObject();
506						transmissionError(shouldNotHappen.getMessage());
507						deleteBool = false;
508					} else {
509						deleteBool = (Boolean) ois.readObject();
510					}
511
512				}
513
514			} else if (command.startsWith("LIST USER")) { //$NON-NLS-1$
515				if (oos != null) {
516					oos.writeObject(command);
517					articleList = (ArrayList<Article>) ois.readObject();
518				}
519
520			} else if (command.startsWith("LOCK USER")) { //$NON-NLS-1$
521				if (oos != null) {
522					oos.writeObject(command);
523
524					if ((Boolean) ois.readObject()) {
525						Exception shouldNotHappen = (Exception) ois
526								.readObject();
527						transmissionError(shouldNotHappen.getMessage());
528						lockBool = false;
529					} else {
530						lockBool = (Boolean) ois.readObject();
531					}
532
533				}
534
535			} else if (command.startsWith("UNLOCK USER")) { //$NON-NLS-1$
536				if (oos != null) {
537					oos.writeObject(command);
538
539					if ((Boolean) ois.readObject()) {
540						Exception shouldNotHappen = (Exception) ois
541								.readObject();
542						transmissionError(shouldNotHappen.getMessage());
543						unlockBool = false;
544					} else {
545						unlockBool = (Boolean) ois.readObject();
546					}
547
548				}
549
550			} else if (command.startsWith("DELETE ARTICLE")) { //$NON-NLS-1$
551				if (oos != null) {
552					oos.writeObject(command);
553										
554					if ((Boolean) ois.readObject()) {
555						Exception shouldNotHappen = (Exception) ois
556								.readObject();
557						transmissionError(shouldNotHappen.getMessage());
558						deleteArticleBool = false;
559					} else {
560						deleteArticleBool = (Boolean) ois.readObject();
561					}
562				}
563
564			} else if (command.startsWith("SHOW USERS")) { //$NON-NLS-1$
565				if (oos != null) {
566					oos.writeObject(command);
567					userList = (ArrayList<User>) ois.readObject();
568				}
569
570			} else if (command.startsWith("SHOW MESSAGES")) { //$NON-NLS-1$
571				if (oos != null) {
572					oos.writeObject(command);
573					// TODO empty messagelist is no error. have to change it
574					// there was an error. create empty messagelist and show the
575					// error
576					if ((Boolean) ois.readObject()) {
577						messageList = new ArrayList<Message>();
578						Exception shouldNotHappen = (Exception) ois
579								.readObject();
580						//TODO wegmachen wenn der fehler nicht mehr fliegt
581						// transmissionError(shouldNotHappen.getMessage());
582						// there was no error. proceed as planned
583					} else {
584						messageList = (ArrayList<Message>) ois.readObject();
585					}
586				}
587
588			} else if (command.startsWith("SHOW CATEGORIES")) { //$NON-NLS-1$
589				if (oos != null) {
590					oos.writeObject(command);
591					categoryList = (ArrayList<Category>) ois.readObject();
592				}
593
594			} else if (command.startsWith("INSERT SALE")) { //$NON-NLS-1$
595				if (oos != null) {
596					oos.writeObject(command);
597
598					if ((Boolean) ois.readObject()) {
599						Exception shouldNotHappen = (Exception) ois
600								.readObject();
601						transmissionError(shouldNotHappen.getMessage());
602						newSetArticleNo = -1;
603					} else {
604						newSetArticleNo = (Integer) ois.readObject();
605					}
606				}
607
608			} else if (command.startsWith("INSERT AUCTION")) { //$NON-NLS-1$
609				if (oos != null) {
610					oos.writeObject(command);
611
612					if ((Boolean) ois.readObject()) {
613						Exception shouldNotHappen = (Exception) ois
614								.readObject();
615						transmissionError(shouldNotHappen.getMessage());
616						newSetArticleNo = -1;
617					} else {
618						newSetArticleNo = (Integer) ois.readObject();
619					}
620				}
621
622			} else if (command.startsWith("ADD DESCRIPTION")) { //$NON-NLS-1$
623				if (oos != null) {
624					oos.writeObject(command);
625
626					// there was an error. show it
627					if ((Boolean) ois.readObject()) {
628						Exception shouldNotHappen = (Exception) ois
629								.readObject();
630						transmissionError(shouldNotHappen.getMessage());
631					}
632					// nothing else because there is no return value
633				}
634
635			} else if (command.startsWith("ADD CATEGORY")) { //$NON-NLS-1$
636				if (oos != null) {
637					oos.writeObject(command);
638
639					// there was an error. show it
640					if ((Boolean) ois.readObject()) {
641						Exception shouldNotHappen = (Exception) ois
642								.readObject();
643						transmissionError(shouldNotHappen.getMessage());
644					}
645					// nothing else because there is no return value
646				}
647
648			} else if (command.startsWith("SHOW PHONE")) { //$NON-NLS-1$
649				if (oos != null) {
650					oos.writeObject(command);
651
652					// there was an error. show it
653					if ((Boolean) ois.readObject()) {
654						Exception shouldNotHappen = (Exception) ois
655								.readObject();
656						transmissionError(shouldNotHappen.getMessage());
657					}
658					// nothing else because there is no return value
659				}
660
661			} else if (command.startsWith("SHOW EMAIL")) { //$NON-NLS-1$
662				if (oos != null) {
663					oos.writeObject(command);
664
665					// there was an error. show it
666					if ((Boolean) ois.readObject()) {
667						Exception shouldNotHappen = (Exception) ois
668								.readObject();
669						transmissionError(shouldNotHappen.getMessage());
670					}
671					// nothing else because there is no return value
672				}
673
674			} else if (command.startsWith("SHOW ARTICLE")) { //$NON-NLS-1$
675				if (oos != null) {
676					oos.writeObject(command);
677
678					if ((Boolean) ois.readObject()) {
679						Exception shouldNotHappen = (Exception) ois
680								.readObject();
681						transmissionError(shouldNotHappen.getMessage());
682						editArticle = null;
683					} else {
684						editArticle = (Article) ois.readObject();
685					}
686				}
687
688			} else if (command.startsWith("DELETE CATEGORY")) { //$NON-NLS-1$
689				if (oos != null) {
690					oos.writeObject(command);
691					
692					if ((Boolean) ois.readObject()) {
693						Exception shouldNotHappen = (Exception) ois
694						.readObject();
695						transmissionError(shouldNotHappen.getMessage());
696					}
697					// nothing else because there is no return value
698				}
699
700			} else if (command.startsWith("REMOVE OLDMESSAGES")) { //$NON-NLS-1$
701				if (oos != null) {
702					oos.writeObject(command);
703
704					if ((Boolean) ois.readObject()) {
705						Exception shouldNotHappen = (Exception) ois
706								.readObject();
707						transmissionError(shouldNotHappen.getMessage());
708					}
709					// nothing else because there is no return value
710				}
711
712			} else if (command.startsWith("SET PRICE")) { //$NON-NLS-1$
713				if (oos != null) {
714					oos.writeObject(command);
715					
716					if ((Boolean) ois.readObject()) {
717						Exception shouldNotHappen = (Exception) ois
718						.readObject();
719						transmissionError(shouldNotHappen.getMessage());
720						setNewPrice = false;
721					}else{
722						setNewPrice = (Boolean) ois.readObject();
723					}
724					
725				}
726
727			} else if (command.startsWith("UNSOLD")) { //$NON-NLS-1$
728				if (oos != null) {
729					oos.writeObject(command);
730
731					if ((Boolean) ois.readObject()) {
732						Exception shouldNotHappen = (Exception) ois
733								.readObject();
734						transmissionError(shouldNotHappen.getMessage());
735						changeSoldFlagBool = false;
736					}else{
737						changeSoldFlagBool = (Boolean) ois.readObject();
738					}
739					
740
741				}
742
743			} else if (command.startsWith("CHANGE AUCTIONEND")) { //$NON-NLS-1$
744				if (oos != null) {
745					oos.writeObject(command);
746
747					if ((Boolean) ois.readObject()) {
748						Exception shouldNotHappen = (Exception) ois
749								.readObject();
750						transmissionError(shouldNotHappen.getMessage());
751						// nothing because no return is expected
752					}
753					// nothing else because no return is expected
754
755				}
756
757			} else if (command.startsWith("LIST CATEGORY")) { //$NON-NLS-1$
758				if (oos != null) {
759					oos.writeObject(command);
760					
761					
762					if ((Boolean) ois.readObject()) {
763						Exception shouldNotHappen = (Exception) ois
764								.readObject();
765						transmissionError(shouldNotHappen.getMessage());
766						//create an empty articlelist to avoid busting the programm because of a non existing list
767						articleList = new ArrayList<Article>();
768					}else{
769						articleList = (ArrayList<Article>) ois.readObject();
770					}
771				}
772
773			} else if (command.startsWith("BUY")) { //$NON-NLS-1$
774				if (oos != null) {
775					oos.writeObject(command);
776					
777					if ((Boolean) ois.readObject()) {
778						Exception shouldNotHappen = (Exception) ois
779								.readObject();
780						transmissionError(shouldNotHappen.getMessage());
781						buyBool = false;
782					} else {
783						buyBool = (Boolean) ois.readObject();
784					}
785
786				}
787
788			} else if (command.startsWith("BID")) { //$NON-NLS-1$
789				if (oos != null) {
790					oos.writeObject(command);
791
792					if ((Boolean) ois.readObject()) {
793						Exception shouldNotHappen = (Exception) ois
794								.readObject();
795						transmissionError(shouldNotHappen.getMessage());
796						bidBool = false;
797					} else {
798						bidBool = (Boolean) ois.readObject();
799					}
800				}
801
802			} else if (command.startsWith("SEARCH")) { //$NON-NLS-1$
803				if (oos != null) {
804					oos.writeObject(command);
805					articleList = (ArrayList<Article>) ois.readObject();
806				}
807
808			} else if (command.startsWith("LOGOUT")) { //$NON-NLS-1$
809				if (oos != null) {
810					oos.writeObject(command);
811					socket = null;
812					ois = null;
813					oos = null;
814				}
815			}
816
817		} catch (IOException e) {
818			JOptionPane
819					.showMessageDialog(
820							null,
821							Messages.getString("GUI.FailedToConnect3"), //$NON-NLS-1$
822							Messages.getString("GUI.ConnectionProblem3"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
823		} catch (ClassNotFoundException e) {
824			JOptionPane
825					.showMessageDialog(
826							null,
827							Messages.getString("GUI.FailedToConnect4"), //$NON-NLS-1$
828							Messages.getString("GUI.ConnectionProblem4"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
829		}
830	}
831
832	/**
833	 * 
834	 * @param input
835	 *            String to be checked
836	 * @param type
837	 *            format to Check
838	 * @return false if input is malformed, true if input is ok
839	 */
840	public boolean checkForMalformedValues(String input, String type) {
841		if (type.equals("username")) { //$NON-NLS-1$
842			if (input.equals("")) { //$NON-NLS-1$
843				JOptionPane
844						.showMessageDialog(
845								null,
846								Messages.getString("GUI.NoUsername"), //$NON-NLS-1$
847								Messages.getString("GUI.NoUsernameEntered"), //$NON-NLS-1$
848								JOptionPane.WARNING_MESSAGE);
849				return false;
850			}
851
852			if (input.contains(" ")) { //$NON-NLS-1$
853				JOptionPane
854						.showMessageDialog(
855								null,
856								Messages.getString("GUI.UsernameContainsA"), //$NON-NLS-1$
857								Messages.getString("GUI.MalformedUsername"), //$NON-NLS-1$
858								JOptionPane.WARNING_MESSAGE);
859				return false;
860			}
861
862		} else if (type.equals("password")) { //$NON-NLS-1$
863			if (input.equals("")) { //$NON-NLS-1$
864				JOptionPane
865						.showMessageDialog(
866								null,
867								Messages.getString("GUI.NoPasswordEnteredPlease"), //$NON-NLS-1$
868								Messages.getString("GUI.NoPasswordEntered"), //$NON-NLS-1$
869								JOptionPane.WARNING_MESSAGE);
870				return false;
871			}
872
873			if (input.contains(" ")) { //$NON-NLS-1$
874				JOptionPane
875						.showMessageDialog(
876								null,
877								Messages.getString("GUI.PasswordContains"), //$NON-NLS-1$
878								Messages.getString("GUI.MalformedPw"), //$NON-NLS-1$
879								JOptionPane.WARNING_MESSAGE);
880				return false;
881			}
882
883		} else if (type.equals("dateofbirth")) { //$NON-NLS-1$
884			if (input.equals("")) { //$NON-NLS-1$
885				JOptionPane
886						.showMessageDialog(
887								null,
888								Messages.getString("GUI.NoDateOfBirth"), //$NON-NLS-1$
889								Messages.getString("GUI.NoDateOfBirthEntered"), //$NON-NLS-1$
890								JOptionPane.WARNING_MESSAGE);
891				return false;
892			}
893
894			if (input.length() != 6 || !input.matches("\\d*")) { //$NON-NLS-1$
895				JOptionPane.showMessageDialog(null,
896						Messages.getString("GUI.DateOfBirthIsMalformed"), //$NON-NLS-1$
897						Messages.getString("GUI.MalformedDateOfBirth"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
898				return false;
899			}
900
901		} else if (type.equals("auctionend")) { //$NON-NLS-1$
902			if (input.equals("") || input.equals("auction end date")) { //$NON-NLS-1$ //$NON-NLS-2$
903				JOptionPane
904						.showMessageDialog(
905								null,
906								Messages.getString("GUI.NoAuctionEndEntered"), //$NON-NLS-1$
907								Messages.getString("GUI.NoAuctionEndEntered2"), //$NON-NLS-1$
908								JOptionPane.WARNING_MESSAGE);
909				return false;
910			}
911
912			if (input.length() != 13) {
913				return false;
914			}
915
916			if (input.contains("-")) { //$NON-NLS-1$
917				String[] tempStringArray = input.split("-"); //$NON-NLS-1$
918
919				if (!tempStringArray[0].matches("\\d*") //$NON-NLS-1$
920						|| !tempStringArray[1].matches("\\d*")) { //$NON-NLS-1$
921					JOptionPane.showMessageDialog(null,
922							Messages.getString("GUI.AuctionEndIsMalformed"), //$NON-NLS-1$
923							Messages.getString("GUI.MalformedActionEnd"), //$NON-NLS-1$
924							JOptionPane.WARNING_MESSAGE);
925					return false;
926				}
927			}
928
929		} else if (type.equals("zip")) { //$NON-NLS-1$
930			if (input.equals("")) { //$NON-NLS-1$
931				JOptionPane.showMessageDialog(null,
932						Messages.getString("GUI.NoZipEnteredPlease"), //$NON-NLS-1$
933						Messages.getString("GUI.NoZipEntered"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
934				return false;
935			}
936
937			if (!input.matches("\\d*")) { //$NON-NLS-1$
938				JOptionPane.showMessageDialog(null,
939						Messages.getString("GUI.ZipIsMalformed"), Messages.getString("GUI.MalformedZip"), //$NON-NLS-1$ //$NON-NLS-2$
940						JOptionPane.WARNING_MESSAGE);
941				return false;
942			}
943
944		} else if (type.equals("phoneno")) { //$NON-NLS-1$
945			if (input.equals("")) { //$NON-NLS-1$
946				JOptionPane
947						.showMessageDialog(
948								null,
949								Messages.getString("GUI.NoPhoneNumberEntered"), //$NON-NLS-1$
950								Messages.getString("GUI.NoPhoneNumberEntered2"), //$NON-NLS-1$
951								JOptionPane.WARNING_MESSAGE);
952				return false;
953			}
954
955			if (input.contains("-")) { //$NON-NLS-1$
956				String[] tempStringArray = input.split("-"); //$NON-NLS-1$
957
958				if (!tempStringArray[0].matches("\\d*") //$NON-NLS-1$
959						|| !tempStringArray[1].matches("\\d*")) { //$NON-NLS-1$
960					// phoneno doesn't contain just digits
961					JOptionPane.showMessageDialog(null,
962							Messages.getString("GUI.PhoneNumberIsMalformed"), //$NON-NLS-1$
963							Messages.getString("GUI.MalformedPhoneNo"), //$NON-NLS-1$
964							JOptionPane.WARNING_MESSAGE);
965					return false;
966				}
967			} else {
968				// no - included in phoneno
969				JOptionPane.showMessageDialog(null,
970						Messages.getString("GUI.PhoneNoIs"), //$NON-NLS-1$
971						Messages.getString("GUI.MalformedPhone"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
972				return false;
973			}
974
975		} else if (type.equals("price")) { //$NON-NLS-1$
976			if (input.equals("price") || input.equals("")) { //$NON-NLS-1$ //$NON-NLS-2$
977				JOptionPane.showMessageDialog(null, Messages.getString("GUI.PleaseEnterAPrice"), //$NON-NLS-1$
978						Messages.getString("GUI.NoPriceEntered"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
979				return false;
980			}
981
982			try {
983				double check = Double.parseDouble(input);
984				if (check % 0.5 != 0) {
985					JOptionPane
986							.showMessageDialog(
987									null,
988									Messages.getString("GUI.ThePriceHasToBe"), //$NON-NLS-1$
989									Messages.getString("GUI.MalformedPrice"), //$NON-NLS-1$
990									JOptionPane.WARNING_MESSAGE);
991					return false;
992				}
993			} catch (NumberFormatException e) {
994				JOptionPane
995						.showMessageDialog(
996								null,
997								Messages.getString("GUI.ThePriceHasTo"), //$NON-NLS-1$
998								Messages.getString("GUI.MalformedPrice2"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
999				return false;
1000			}
1001
1002		} else if (type.equals("category")) { //$NON-NLS-1$
1003			if (input.contains(" ")) { //$NON-NLS-1$
1004				JOptionPane
1005						.showMessageDialog(
1006								null,
1007								Messages.getString("GUI.CategoriesMustNotContain"), //$NON-NLS-1$
1008								Messages.getString("GUI.MalformedCategory"), //$NON-NLS-1$
1009								JOptionPane.WARNING_MESSAGE);
1010				return false;
1011			}
1012
1013		} else if (type.equals("email")) { //$NON-NLS-1$
1014			if (input.equals("")) { //$NON-NLS-1$
1015				JOptionPane
1016						.showMessageDialog(
1017								null,
1018								Messages.getString("GUI.NoE-mailAddress"), //$NON-NLS-1$
1019								Messages.getString("GUI.NoEMailAdrdressEntered1"), //$NON-NLS-1$
1020								JOptionPane.WARNING_MESSAGE);
1021				return false;
1022			}
1023
1024			if (input.contains("@")) { //$NON-NLS-1$
1025				String[] emailArray = input.split("@"); //$NON-NLS-1$
1026				if (!emailArray[emailArray.length - 1].contains(".")) { //$NON-NLS-1$
1027					JOptionPane.showMessageDialog(null,
1028							Messages.getString("GUI.EmailAddressIs"), //$NON-NLS-1$
1029							Messages.getString("GUI.MalformedEmailAddress"), //$NON-NLS-1$
1030							JOptionPane.WARNING_MESSAGE);
1031					return false;
1032				}
1033
1034			} else {
1035				JOptionPane
1036						.showMessageDialog(
1037								null,
1038								Messages.getString("GUI.EmailAddressIs2"), //$NON-NLS-1$
1039								Messages.getString("GUI.MalformedEmailAddress2"), //$NON-NLS-1$
1040								JOptionPane.WARNING_MESSAGE);
1041				return false;
1042			}
1043
1044		}
1045		// no problems found? return true!
1046		return true;
1047	}
1048
1049	/**
1050	 * updates the category data represented by two comboboxes in the sell tab.
1051	 * if no server connection is active it connects. if a connection is
1052	 * available the client requests a categorylist from the server. the
1053	 * categorylist is then convertet to an array of categorynames, which then
1054	 * is added to the defaultcomboboxmodel
1055	 * 
1056	 * @return DefaultComboBoxModel with updated category data
1057	 */
1058	public DefaultComboBoxModel updateCategoryData() {
1059		if (socket == null) {
1060			connectToServer();
1061			execute("SHOW CATEGORIES"); //$NON-NLS-1$
1062			execute("LOGOUT"); //$NON-NLS-1$
1063		} else {
1064			execute("SHOW CATEGORIES"); //$NON-NLS-1$
1065		}
1066		
1067		String[] categoryData = new String[categoryList.size()];
1068		Iterator<Category> it = categoryList.iterator();
1069
1070		if (categoryList.size() != 0) {
1071			int counter = 0;
1072			while (it.hasNext()) {
1073				Category actual = it.next();
1074				categoryData[counter] = actual.getCatName();
1075				counter++;
1076			}
1077		}
1078
1079		DefaultComboBoxModel model = new DefaultComboBoxModel(categoryData);
1080		
1081		return model;
1082	}
1083
1084	
1085
1086	
1087
1088
1089	/**
1090	 * Initialize the contents of the frame.
1091	 */
1092	private void initialize() {
1093
1094
1095
1096		frame = new JFrame("3,14159265bay"); //$NON-NLS-1$
1097		frame.setBounds(100, 100, 1100, 600);
1098
1099		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
1100		frame.getContentPane().setLayout(
1101				new FormLayout(new ColumnSpec[] {
1102						FormFactory.RELATED_GAP_COLSPEC,
1103						ColumnSpec.decode("default:grow"), }, new RowSpec[] { //$NON-NLS-1$
1104						FormFactory.RELATED_GAP_ROWSPEC,
1105						RowSpec.decode("max(23dlu;default)"), //$NON-NLS-1$
1106						FormFactory.RELATED_GAP_ROWSPEC,
1107						RowSpec.decode("default:grow"), //$NON-NLS-1$
1108						FormFactory.RELATED_GAP_ROWSPEC,
1109						RowSpec.decode("default:grow"), })); //$NON-NLS-1$
1110
1111		loginPanel = new JPanel();
1112		frame.getContentPane().add(loginPanel, "2, 2, fill, fill"); //$NON-NLS-1$
1113
1114		welcomeLabel = new JLabel(""); //$NON-NLS-1$
1115		loginPanel.add(welcomeLabel);
1116
1117		txtUsername = new JTextField();
1118		txtUsername.setText(Messages.getString("GUI.Username")); //$NON-NLS-1$
1119		txtUsername.setColumns(10);
1120		loginPanel.add(txtUsername);
1121
1122		txtPassword = new JTextField();
1123		txtPassword.setText(Messages.getString("GUI.Password")); //$NON-NLS-1$
1124		txtPassword.setColumns(10);
1125		loginPanel.add(txtPassword);
1126	
1127
1128		/**
1129		 * takes the strings from txtUsername and txtPassword to log the user
1130		 * in. therefore the login command is executed. after that the answer
1131		 * from the server is processed. if the login was successful the
1132		 * loginarea is set invisible and the logout button becomes visible.
1133		 */
1134		btnLogin = new JButton(Messages.getString("GUI.Login")); //$NON-NLS-1$
1135		btnLogin.addMouseListener(new MouseAdapter() {
1136			@Override
1137			public void mouseClicked(MouseEvent arg0) {
1138				if (socket == null) {
1139					connectToServer();
1140				}
1141
1142				execute("LOGIN " + txtUsername.getText() + " " //$NON-NLS-1$ //$NON-NLS-2$
1143						+ txtPassword.getText());
1144
1145				// save username for later use
1146				usernameTempSaved = txtUsername.getText();
1147
1148				if (loginBool) {
1149					txtUsername.setVisible(false);
1150					txtPassword.setVisible(false);
1151					btnLogin.setVisible(false);
1152					btnLogout.setVisible(true);
1153					btnRegister.setVisible(false);
1154					welcomeLabel.setText(Messages.getString("GUI.Welcome") + usernameTempSaved); //$NON-NLS-1$
1155
1156					// admin only gets the user control center with extra admin
1157					// panel
1158
1159					if (usernameTempSaved.equals("Administrator")) {
1160
1161						tabbedPane.removeAll();
1162						tabbedPane.addTab(Messages.getString("GUI.UserControlCenter"), null, //$NON-NLS-1$
1163								userControlCenterPanel, null);
1164						// admin can't change his userdata
1165						comboBoxChangeUserdata.setVisible(false);
1166						lblChange.setVisible(false);
1167						lblTo.setVisible(false);
1168						txtChangeNewValue.setVisible(false);
1169						btnChangeOk.setVisible(false);
1170						adminPanel.setVisible(true);
1171
1172						// everyone else gets all tabs without admin panel
1173					} else {
1174
1175						tabbedPane.removeAll();
1176						tabbedPane.addTab(Messages.getString("GUI.buy"), null, buyTabPanel, null); //$NON-NLS-1$
1177						tabbedPane.addTab(Messages.getString("GUI.sell"), null, sellTabPanel, null); //$NON-NLS-1$
1178						tabbedPane.addTab(Messages.getString("GUI.msgs"), null, messagePanel, null); //$NON-NLS-1$
1179						tabbedPane.addTab(Messages.getString("GUI.UCC"), null, //$NON-NLS-1$
1180								userControlCenterPanel, null);
1181						// user can change his userdata
1182						comboBoxChangeUserdata.setVisible(true);
1183						lblChange.setVisible(true);
1184						lblTo.setVisible(true);
1185						txtChangeNewValue.setVisible(true);
1186						btnChangeOk.setVisible(true);
1187
1188						adminPanel.setVisible(false);
1189						//article details visible in buy tab
1190
1191						articleDetailsPanel.setVisible(true);
1192						btnShowArticleDetails.setVisible(true);
1193					}
1194					// if login failed
1195				} else {
1196
1197					JOptionPane.showMessageDialog(null,
1198							Messages.getString("GUI.PleaseEnterCorrectLogin"), Messages.getString("GUI.LoginFailed"), //$NON-NLS-1$ //$NON-NLS-2$
1199							JOptionPane.WARNING_MESSAGE);
1200				}
1201				// reset username and password text fields
1202				txtUsername.setText(Messages.getString("GUI.Username2")); //$NON-NLS-1$
1203				txtPassword.setText(Messages.getString("GUI.password")); //$NON-NLS-1$
1204			}
1205
1206		});
1207		loginPanel.add(btnLogin);
1208	
1209		/**
1210		 * executes the logout command and then resets the userinterface. login
1211		 * panel becomes visible again.
1212		 */
1213		btnLogout = new JButton(Messages.getString("GUI.Logout")); //$NON-NLS-1$
1214		btnLogout.addMouseListener(new MouseAdapter() {
1215			@Override
1216			public void mouseClicked(MouseEvent arg0) {
1217				txtUsername.setVisible(true);
1218				txtPassword.setVisible(true);
1219				btnLogin.setVisible(true);
1220				btnLogout.setVisible(false);
1221				welcomeLabel.setText(""); //$NON-NLS-1$
1222				btnRegister.setVisible(true);
1223				loginBool = false;
1224				usernameTempSaved = null;
1225				adminPanel.setVisible(false);
1226
1227				// resetting elements in buy tab
1228				txtEnterSearchTerm.setText(Messages.getString("GUI.EnterSearchItem")); //$NON-NLS-1$
1229				lblArticleTitleHere.setText(""); //$NON-NLS-1$
1230				lblCurrentPriceHere.setText(""); //$NON-NLS-1$
1231				lblAuctionEndAnd.setText(""); //$NON-NLS-1$
1232				lblDisplayNoOfBids.setText(""); //$NON-NLS-1$
1233				articleDescriptionTextAreaBuyTab.setText(""); //$NON-NLS-1$
1234				lblArticlenoHere.setText(""); //$NON-NLS-1$
1235				lblVendorNameHere.setText(""); //$NON-NLS-1$
1236				lblPhonenoHere.setText(""); //$NON-NLS-1$
1237				lblEmailHere.setText(""); //$NON-NLS-1$
1238				lblMaxBidHere.setText(""); //$NON-NLS-1$
1239
1240				// resetting elements in login panel
1241				txtUsername.setText(Messages.getString("GUI.Username3")); //$NON-NLS-1$
1242				txtPassword.setText(Messages.getString("GUI.Password2")); //$NON-NLS-1$
1243
1244
1245				//resetting elements in sell tab
1246
1247
1248				txtArticleTitle.setText(Messages.getString("GUI.ArticleTitle")); //$NON-NLS-1$
1249				articleDescriptionTextArea.setText(Messages.getString("GUI.ArticleDescription")); //$NON-NLS-1$
1250				txtNewCategory.setText(Messages.getString("GUI.newCategory")); //$NON-NLS-1$
1251
1252				chckbxShowPhonenoOn.setSelected(false);
1253				chckbxShowEmailOn.setSelected(false);
1254				txtPrice.setText(Messages.getString("GUI.Price")); //$NON-NLS-1$
1255				txtAuctionEndDate.setText(Messages.getString("GUI.AuctionEndDate")); //$NON-NLS-1$
1256				txtrCurrentDescription.setText(""); //$NON-NLS-1$
1257				txtrAddToCurrentDescription.setText(""); //$NON-NLS-1$
1258				changeArticleDataNewCategoryTextField.setText(Messages.getString("GUI.newCategory2")); //$NON-NLS-1$
1259				changeArticleDataChangePriceTextField.setText(Messages.getString("GUI.Price2")); //$NON-NLS-1$
1260
1261				// resetting elements in user control tab
1262				txtChangeNewValue.setText(""); //$NON-NLS-1$
1263				txtUsernameToEdit.setText(Messages.getString("GUI.UsernameToEdit")); //$NON-NLS-1$
1264
1265
1266				// resetting the article table in the buy tab
1267				Object[][] data = new Object[0][0];
1268				String[] columnNamesArticleTableBuyTab = { Messages.getString("GUI.title"), //$NON-NLS-1$
1269						Messages.getString("GUI.currentPrice"), Messages.getString("GUI.timeLeft") }; //$NON-NLS-1$ //$NON-NLS-2$
1270				articleTableBuyTab = new JTable(data,
1271						columnNamesArticleTableBuyTab);
1272
1273
1274				// resetting the article table in the sell tab
1275
1276				Object[][] data2 = new Object[0][0];
1277				String[] columnNamesArticleListChangeArticle = { Messages.getString("GUI.ArticleNo"), //$NON-NLS-1$
1278						Messages.getString("GUI.title2"), Messages.getString("GUI.description"), Messages.getString("GUI.currentPrice2"), Messages.getString("GUI.timeLeft2"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
1279						Messages.getString("GUI.status") }; //$NON-NLS-1$
1280				showMyArticlesTable = new JTable(data2,
1281						columnNamesArticleListChangeArticle);
1282
1283
1284				tabbedPane.removeAll();
1285				tabbedPane.addTab(Messages.getString("GUI.buy1"), null, buyTabPanel, null); //$NON-NLS-1$
1286
1287				// hide article details in buy tab until a user logs in
1288				articleDetailsPanel.setVisible(false);
1289				btnShowArticleDetails.setVisible(false);
1290
1291				execute("LOGOUT"); //$NON-NLS-1$
1292			
1293		
1294		loginPanel.add(btnLogout);
1295
1296		/**
1297		 * opens a popup where user data can be entered to register a user.
1298		 */
1299		btnRegister = new JButton(Messages.getString("GUI.register")); //$NON-NLS-1$
1300		btnRegister.addMouseListener(new MouseAdapter() {
1301			@Override
1302			public void mouseClicked(MouseEvent arg0) {
1303				JTextField txtRegUsername = new JTextField();
1304				JTextField txtRegPassword = new JTextField();
1305				JTextField txtRegLastname = new JTextField();
1306				JTextField txtRegFirstname = new JTextField();
1307				JTextField txtRegDateOfBirth = new JTextField();
1308				JTextField txtRegStreet = new JTextField();
1309				JTextField txtRegZip = new JTextField();
1310				JTextField txtRegLocation = new JTextField();
1311				JTextField txtRegPhoneNo = new JTextField();
1312				JTextField txtRegEmail = new JTextField();
1313				boolean sendFlag = true;
1314
1315				Object[] registrationFields = {
1316						Messages.getString("GUI.Username(noSpace)"), //$NON-NLS-1$
1317						txtRegUsername,
1318						Messages.getString("GUI.Password(noSpace)"), //$NON-NLS-1$
1319						txtRegPassword, Messages.getString("GUI.LastName"), txtRegLastname, //$NON-NLS-1$
1320						Messages.getString("GUI.FirstName"), txtRegFirstname, //$NON-NLS-1$
1321						Messages.getString("GUI.DateOfBirth"), txtRegDateOfBirth, //$NON-NLS-1$
1322						Messages.getString("GUI.Street"), txtRegStreet, Messages.getString("GUI.ZIP"), txtRegZip, Messages.getString("GUI.Location"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
1323						txtRegLocation,
1324						Messages.getString("GUI.Phoneno"), //$NON-NLS-1$
1325						txtRegPhoneNo, Messages.getString("GUI.Email"), txtRegEmail }; //$NON-NLS-1$
1326
1327				JOptionPane registrationPane = new JOptionPane(
1328						registrationFields, JOptionPane.PLAIN_MESSAGE,
1329						JOptionPane.OK_CANCEL_OPTION);
1330				registrationPane.createDialog(null, "Register User") //$NON-NLS-1$
1331						.setVisible(true);
1332
1333				String RegUsernameString = txtRegUsername.getText();
1334				String RegPasswordString = txtRegPassword.getText();
1335				String RegLastnameString = txtRegLastname.getText();
1336				String RegFirstnameString = txtRegFirstname.getText();
1337				String RegDateOfBirthString = txtRegDateOfBirth.getText();
1338				String RegStreetString = txtRegStreet.getText();
1339				String RegZipString = txtRegZip.getText();
1340				String RegLocationString = txtRegLocation.getText();
1341				String RegPhoneNoString = txtRegPhoneNo.getText();
1342				String RegEmailString = txtRegEmail.getText();
1343
1344				// check username for malformation
1345				if (!checkForMalformedValues(RegUsernameString, "username")) { //$NON-NLS-1$
1346					sendFlag = false;
1347				}
1348
1349				// check password for malformation
1350				if (!checkForMalformedValues(RegPasswordString, "password")) { //$NON-NLS-1$
1351					sendFlag = false;
1352				}
1353
1354				// check date of birth for malformation
1355				if (!checkForMalformedValues(RegDateOfBirthString,
1356						"dateofbirth")) { //$NON-NLS-1$
1357					sendFlag = false;
1358				}
1359
1360				// check zip for malformation
1361				if (!checkForMalformedValues(RegZipString, "zip")) { //$NON-NLS-1$
1362					sendFlag = false;
1363				}
1364
1365				// check phoneno for malformation
1366				if (!checkForMalformedValues(RegPhoneNoString, "phoneno")) { //$NON-NLS-1$
1367					sendFlag = false;
1368				}
1369
1370				// check email for malformation
1371				if (!checkForMalformedValues(RegEmailString, "email")) { //$NON-NLS-1$
1372					sendFlag = false;
1373				}
1374
1375				// when no malformations were detected execute insert user
1376				if (sendFlag) {
1377					if (socket == null) {
1378						connectToServer();
1379					}
1380					execute("INSERT USER " + RegUsernameString + " " //$NON-NLS-1$ //$NON-NLS-2$
1381							+ RegPasswordString + " " + "\"" //$NON-NLS-1$ //$NON-NLS-2$
1382							+ RegLastnameString + "\"" + " " + "\"" //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
1383							+ RegFirstnameString + "\"" + " " //$NON-NLS-1$ //$NON-NLS-2$
1384							+ RegDateOfBirthString + " " + "\"" //$NON-NLS-1$ //$NON-NLS-2$
1385							+ RegStreetString + "\"" + " " + RegZipString + " " //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
1386							+ "\"" + RegLocationString + "\"" + " " + "\"" //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
1387							+ RegPhoneNoString + "\"" + " " + "\"" //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
1388							+ RegEmailString + "\""); //$NON-NLS-1$
1389
1390					// if registration failed (username already taken)
1391					if (!regBool) {
1392						JOptionPane
1393								.showMessageDialog(
1394										null,
1395										Messages.getString("GUI.UsernameAlreadyTakenPlease"), //$NON-NLS-1$
1396										Messages.getString("GUI.UsernameAlreadyTaken"), //$NON-NLS-1$
1397										JOptionPane.WARNING_MESSAGE);
1398
1399					}
1400					
1401					//
1402					if (regBool) {
1403						JOptionPane
1404								.showMessageDialog(
1405										null,
1406										"Congratulations. Your account has been created. You can now log in.",
1407										"User created",
1408										JOptionPane.WARNING_MESSAGE);
1409
1410					}
1411				}
1412
1413			}
1414		});
1415		loginPanel.add(btnRegister);
1416
1417		/**
1418		 * changes the language of the user interface between English and German
1419		 */
1420		btnAufDeutschBitte = new JButton(Messages.getString("GUI.AufDeutschBitte")); //$NON-NLS-1$
1421		btnAufDeutschBitte.addMouseListener(new MouseAdapter() {
1422			@Override
1423			public void mouseClicked(MouseEvent arg0) {
1424				Messages.changeLanguage();	
1425				// TODO @Marcel hier muss die GUI neu gestartet werden
1426			}
1427		});
1428		loginPanel.add(btnAufDeutschBitte);
1429		btnLogout.setVisible(false);
1430
1431		/**
1432		 * pane containing all the tabs
1433		 */
1434		tabbedPane = new JTabbedPane(JTabbedPane.TOP);
1435		frame.getContentPane().add(tabbedPane, "2, 4, 1, 3"); //$NON-NLS-1$
1436		tabbedPane.setVisible(true);
1437
1438		/**
1439		 * the buy tab
1440		 */
1441		buyTabPanel = new JPanel();
1442		tabbedPane.addTab(Messages.getString("GUI.Buy2"), null, buyTabPanel, null); //$NON-NLS-1$
1443
1444		buyTabPanel.setLayout(new FormLayout(new ColumnSpec[] {
1445				FormFactory.RELATED_GAP_COLSPEC,
1446				ColumnSpec.decode("max(95dlu;min)"), //$NON-NLS-1$
1447				FormFactory.RELATED_GAP_COLSPEC,
1448				ColumnSpec.decode("55px"), //$NON-NLS-1$
1449				FormFactory.RELATED_GAP_COLSPEC,
1450				ColumnSpec.decode("80px"), //$NON-NLS-1$
1451				FormFactory.RELATED_GAP_COLSPEC,
1452
1453				ColumnSpec.decode("310px"),
1454
1455
1456				FormFactory.RELATED_GAP_COLSPEC,
1457
1458				ColumnSpec.decode("35px"),
1459
1460				FormFactory.RELATED_GAP_COLSPEC,
1461
1462				ColumnSpec.decode("330px"),
1463
1464				FormFactory.RELATED_GAP_COLSPEC,
1465				FormFactory.DEFAULT_COLSPEC,},
1466			new RowSpec[] {
1467				FormFactory.RELATED_GAP_ROWSPEC,
1468				FormFactory.DEFAULT_ROWSPEC,
1469				FormFactory.RELATED_GAP_ROWSPEC,
1470				FormFactory.DEFAULT_ROWSPEC,
1471				FormFactory.RELATED_GAP_ROWSPEC,
1472				RowSpec.decode("default:grow"), //$NON-NLS-1$
1473				FormFactory.RELATED_GAP_ROWSPEC,
1474				RowSpec.decode("max(135dlu;default)"), //$NON-NLS-1$
1475				FormFactory.RELATED_GAP_ROWSPEC,
1476				FormFactory.DEFAULT_ROWSPEC,
1477				FormFactory.RELATED_GAP_ROWSPEC,
1478
1479				RowSpec.decode("fill:max(80dlu;default):grow"),}));
1480
1481		
1482		/**
1483		 * textfield to enter a search term location: buy tab, left hand side
1484		 */
1485		txtEnterSearchTerm = new JTextField();
1486		txtEnterSearchTerm.setText(Messages.getString("GUI.EnterSearchItem")); //$NON-NLS-1$
1487		buyTabPanel.add(txtEnterSearchTerm, "2, 2, fill, default"); //$NON-NLS-1$
1488		txtEnterSearchTerm.setColumns(10);
1489
1490		/**
1491		 * combobox to select the used search method location: buy tab, left
1492		 * hand side
1493		 */
1494		Object[] searchMethodsForComboBox = { Messages.getString("GUI.and"), Messages.getString("GUI.or") }; //$NON-NLS-1$ //$NON-NLS-2$
1495		searchMethodSelectionComboBox = new JComboBox(searchMethodsForComboBox);
1496		buyTabPanel.add(searchMethodSelectionComboBox, "4, 2, fill, default"); //$NON-NLS-1$
1497
1498		/**
1499		 * executes the search. takes the search term from txtEnterSearchTerm
1500		 * and the search method from searchMethodSelectionComboBox and executes
1501		 * a search. works if a user is logged in or not. location: buy tab,
1502		 * left hand side
1503		 */
1504		btnSearch = new JButton(Messages.getString("GUI.search")); //$NON-NLS-1$
1505		btnSearch.addMouseListener(new MouseAdapter() {
1506			@Override
1507			public void mouseClicked(MouseEvent arg0) {
1508				// works even if no user is logged in
1509				if (socket == null) {
1510					connectToServer();
1511					execute("SEARCH " //$NON-NLS-1$
1512							+ searchMethodSelectionComboBox.getSelectedItem()
1513							+ " \"" + txtEnterSearchTerm.getText() + "\""); //$NON-NLS-1$ //$NON-NLS-2$
1514					execute("LOGOUT"); //$NON-NLS-1$
1515				} else {
1516					// gets all articles of selected category
1517					execute("SEARCH " //$NON-NLS-1$
1518							+ searchMethodSelectionComboBox.getSelectedItem()
1519							+ " \"" + txtEnterSearchTerm.getText() + "\""); //$NON-NLS-1$ //$NON-NLS-2$
1520				}
1521
1522				Iterator<Article> checkForSoldArticlesIterator = articleList
1523						.iterator();
1524				int numberOfSoldArticles = 0;
1525				while (checkForSoldArticlesIterator.hasNext()) {
1526					Article actual = checkForSoldArticlesIterator.next();
1527					if (actual.isSold()) {
1528						numberOfSoldArticles++;
1529					}
1530				}
1531
1532				if (!articleList.isEmpty()) {
1533					// number of rows => number of articles minus the sold ones
1534					Object[][] data = new Object[articleList.size()
1535							- numberOfSoldArticles][4];
1536					String[] columnNamesArticleTableBuyTab = { Messages.getString("GUI.title3"), //$NON-NLS-1$
1537							Messages.getString("GUI.currentPrice2"), Messages.getString("GUI.TimeLeft3"), Messages.getString("GUI.ArticleNo2") }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
1538
1539					// counter to prevent running out of array bounds
1540					int counter = 0;
1541					// first the salesitems
1542					Iterator<Article> it = articleList.iterator();
1543					while (it.hasNext()) {
1544						Object actual = it.next();
1545
1546						if (actual.getClass().getSimpleName().equals(
1547								"SalesItem")) { //$NON-NLS-1$
1548							// if article isn't sold add it to the list
1549							if (!((SalesItem) actual).isSold()) {
1550								data[counter][0] = ((SalesItem) actual)
1551										.getTitle();
1552								data[counter][1] = ((SalesItem) actual)
1553										.getPrice();
1554								data[counter][2] = ""; //$NON-NLS-1$
1555								data[counter][3] = ((SalesItem) actual)
1556										.getArticleNo();
1557								counter++;
1558							}
1559						}
1560					}
1561
1562					// then the auction items
1563					Iterator<Article> it2 = articleList.iterator();
1564					while (it2.hasNext()) {
1565						Object actual = it2.next();
1566
1567						if (actual.getClass().getSimpleName().equals(
1568								"AuctionArticle")) { //$NON-NLS-1$
1569							// if article isn't sold add it to the list
1570							if (!((AuctionArticle) actual).isSold()) {
1571								data[counter][0] = ((AuctionArticle) actual)
1572										.getTitle();
1573								data[counter][1] = ((AuctionArticle) actual)
1574										.getCurrentMaxBid();
1575								data[counter][2] = dateDifferenceToString(((AuctionArticle) actual)
1576										.getAuctionEnd());
1577								data[counter][3] = ((AuctionArticle) actual)
1578										.getArticleNo();
1579								counter++;
1580							}
1581						}
1582					}
1583
1584					articleTableBuyTab = new JTable(new MyTableModel(columnNamesArticleTableBuyTab, data));
1585					articleTableBuyTab
1586							.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
1587					articleTableBuyTab.setAutoCreateRowSorter(true);
1588					articleTableBuyTabScrollPane
1589							.setViewportView(articleTableBuyTab);
1590
1591					// set column widths so that they fill the panel
1592					articleTableBuyTab.getColumnModel().getColumn(0)
1593							.setPreferredWidth(242);
1594					articleTableBuyTab.getColumnModel().getColumn(1)
1595							.setPreferredWidth(80);
1596					articleTableBuyTab.getColumnModel().getColumn(2)
1597							.setPreferredWidth(110);
1598				} else {
1599					JOptionPane
1600							.showMessageDialog(
1601									null,
1602									Messages.getString("GUI.YourSearchReturned0"), //$NON-NLS-1$
1603									Messages.getString("GUI.NoArticlesFound"), //$NON-NLS-1$
1604									JOptionPane.INFORMATION_MESSAGE);
1605				}
1606			
1607			;
1608		buyTabPanel.add(btnSearch, "6, 2"); //$NON-NLS-1$
1609
1610		/**
1611		 * gets the categorylist from the server and adds it to the category
1612		 * list location: buy tab, left hand side
1613		 */
1614		btnRefreshCategories = new JButton(Messages.getString("GUI.RefreshCategories")); //$NON-NLS-1$
1615		btnRefreshCategories.addMouseListener(new MouseAdapter() {
1616			@Override
1617			public void mouseClicked(MouseEvent arg0) {
1618				// works even if no user is logged in
1619				if (socket == null) {
1620					connectToServer();
1621					execute("SHOW CATEGORIES"); //$NON-NLS-1$
1622					execute("LOGOUT"); //$NON-NLS-1$
1623				} else {
1624					// gets the categories
1625					execute("SHOW CATEGORIES"); //$NON-NLS-1$
1626				}
1627
1628				// clear categorylist
1629				categoriesListModel.removeAllElements();
1630				
1631				Iterator<Category> it = categoryList.iterator();
1632				while (it.hasNext()) {
1633					Category actual = it.next();
1634					categoriesListModel.add(categoriesListModel.size(), actual
1635							.getCatName()
1636
1637							+ " (" + actual.getNumberOfUnsoldArticles() + ")");
1638
1639				}
1640
1641			}
1642		});
1643		buyTabPanel.add(btnRefreshCategories, "2, 6"); //$NON-NLS-1$
1644
1645		lblArticlesInSelected = new JLabel(Messages.getString("GUI.ArticlesInSelectedC")); //$NON-NLS-1$
1646		buyTabPanel.add(lblArticlesInSelected, "4, 6, 5, 1"); //$NON-NLS-1$
1647
1648		/**
1649		 * panel containing all buttons and fields needed to buy an article
1650		 */
1651		articleDetailsPanel = new JPanel();
1652		buyTabPanel.add(articleDetailsPanel, "10, 6, 3, 7, fill, fill"); //$NON-NLS-1$
1653		articleDetailsPanel.setLayout(new FormLayout(new ColumnSpec[] {
1654				FormFactory.RELATED_GAP_COLSPEC,
1655
1656				ColumnSpec.decode("100px"),
1657
1658				FormFactory.RELATED_GAP_COLSPEC,
1659
1660				ColumnSpec.decode("240px"),},
1661
1662			new RowSpec[] {
1663				FormFactory.RELATED_GAP_ROWSPEC,
1664				FormFactory.DEFAULT_ROWSPEC,
1665				FormFactory.RELATED_GAP_ROWSPEC,
1666				FormFactory.DEFAULT_ROWSPEC,
1667				FormFactory.RELATED_GAP_ROWSPEC,
1668				FormFactory.DEFAULT_ROWSPEC,
1669				FormFactory.RELATED_GAP_ROWSPEC,
1670				FormFactory.DEFAULT_ROWSPEC,
1671				FormFactory.RELATED_GAP_ROWSPEC,
1672				RowSpec.decode("75px"), //$NON-NLS-1$
1673				FormFactory.RELATED_GAP_ROWSPEC,
1674				FormFactory.DEFAULT_ROWSPEC,
1675				FormFactory.RELATED_GAP_ROWSPEC,
1676				FormFactory.DEFAULT_ROWSPEC,
1677				FormFactory.RELATED_GAP_ROWSPEC,
1678				FormFactory.DEFAULT_ROWSPEC,
1679				FormFactory.RELATED_GAP_ROWSPEC,
1680				FormFactory.DEFAULT_ROWSPEC,
1681				FormFactory.RELATED_GAP_ROWSPEC,
1682				FormFactory.DEFAULT_ROWSPEC,
1683				FormFactory.RELATED_GAP_ROWSPEC,
1684				FormFactory.DEFAULT_ROWSPEC,
1685				FormFactory.RELATED_GAP_ROWSPEC,
1686				FormFactory.DEFAULT_ROWSPEC,
1687				FormFactory.RELATED_GAP_ROWSPEC,
1688				FormFactory.DEFAULT_ROWSPEC,}));
1689
1690		/**
1691		 * labels containing the title of the selected article
1692		 */
1693		lblTitle = new JLabel("Title:"); //$NON-NLS-1$
1694		articleDetailsPanel.add(lblTitle, "2, 2, right, default"); //$NON-NLS-1$
1695		lblArticleTitleHere = new JLabel(""); //$NON-NLS-1$
1696		articleDetailsPanel.add(lblArticleTitleHere, "4, 2"); //$NON-NLS-1$
1697
1698		/**
1699		 * labels containing the current price/bid of the selected article
1700		 */
1701		lblCurrentPrice = new JLabel("current price:"); //$NON-NLS-1$
1702		articleDetailsPanel.add(lblCurrentPrice, "2, 4, right, default"); //$NON-NLS-1$
1703		lblCurrentPriceHere = new JLabel(""); //$NON-NLS-1$
1704		articleDetailsPanel.add(lblCurrentPriceHere, "4, 4"); //$NON-NLS-1$
1705
1706		/**
1707		 * labels showing the time left until the auction end
1708		 */
1709		lblAuctionEnd = new JLabel(Messages.getString("GUI.TimeLeft4")); //$NON-NLS-1$
1710		articleDetailsPanel.add(lblAuctionEnd, "2, 6, right, default"); //$NON-NLS-1$
1711		lblAuctionEndAnd = new JLabel(""); //$NON-NLS-1$
1712		articleDetailsPanel.add(lblAuctionEndAnd, "4, 6"); //$NON-NLS-1$
1713
1714		/**
1715		 * labels showing the number of bids on the article
1716		 */
1717		lblNoOfBids = new JLabel(Messages.getString("GUI.NoOfBids")); //$NON-NLS-1$
1718		articleDetailsPanel.add(lblNoOfBids, "2, 8, right, default"); //$NON-NLS-1$
1719		lblDisplayNoOfBids = new JLabel(""); //$NON-NLS-1$
1720		articleDetailsPanel.add(lblDisplayNoOfBids, "4, 8"); //$NON-NLS-1$
1721
1722		/**
1723		 * label and text area showing the article description. text area is not
1724		 * editable and has a scroll pane
1725		 */
1726		lblDescription = new JLabel(Messages.getString("GUI.Description123")); //$NON-NLS-1$
1727		articleDetailsPanel.add(lblDescription, "2, 10, right, center"); //$NON-NLS-1$
1728		articleDescriptionTextAreaBuyTabScrollPane = new JScrollPane();
1729		articleDetailsPanel.add(articleDescriptionTextAreaBuyTabScrollPane,
1730				"4, 10, fill, fill"); //$NON-NLS-1$
1731		articleDescriptionTextAreaBuyTab = new JTextArea();
1732		articleDescriptionTextAreaBuyTabScrollPane
1733				.setViewportView(articleDescriptionTextAreaBuyTab);
1734		articleDescriptionTextAreaBuyTab.setLineWrap(true);
1735
1736		/**
1737		 * label showing the article number
1738		 */
1739		lblArticleno = new JLabel(Messages.getString("GUI.ArtcleNo123")); //$NON-NLS-1$
1740		articleDetailsPanel.add(lblArticleno, "2, 12, right, default"); //$NON-NLS-1$
1741		lblArticlenoHere = new JLabel(""); //$NON-NLS-1$
1742		articleDetailsPanel.add(lblArticlenoHere, "4, 12"); //$NON-NLS-1$
1743
1744		/**
1745		 * label showing the article vendor
1746		 */
1747		lblSoldBy = new JLabel(Messages.getString("GUI.SoldBy123")); //$NON-NLS-1$
1748		articleDetailsPanel.add(lblSoldBy, "2, 14, right, default"); //$NON-NLS-1$
1749		lblVendorNameHere = new JLabel(""); //$NON-NLS-1$
1750		articleDetailsPanel.add(lblVendorNameHere, "4, 14"); //$NON-NLS-1$
1751
1752		/**
1753		 * label showing the vendors phone number if he choose to show it
1754		 */
1755		lblPhoneno = new JLabel(Messages.getString("GUI.PhoneNo123")); //$NON-NLS-1$
1756		articleDetailsPanel.add(lblPhoneno, "2, 16, right, default"); //$NON-NLS-1$
1757		lblPhonenoHere = new JLabel(""); //$NON-NLS-1$
1758		articleDetailsPanel.add(lblPhonenoHere, "4, 16"); //$NON-NLS-1$
1759
1760		/**
1761		 * label showing the vendors e-mail address if he choose to show it
1762		 */
1763		lblEmail = new JLabel(Messages.getString("GUI.EMail123")); //$NON-NLS-1$
1764		articleDetailsPanel.add(lblEmail, "2, 18, right, default"); //$NON-NLS-1$
1765		lblEmailHere = new JLabel(""); //$NON-NLS-1$
1766		articleDetailsPanel.add(lblEmailHere, "4, 18"); //$NON-NLS-1$
1767
1768		/**
1769		 * button to purchase a sales item
1770		 */
1771		btnBuyArticle = new JButton(Messages.getString("GUI.PurchaseArticle")); //$NON-NLS-1$
1772		btnBuyArticle.addMouseListener(new MouseAdapter() {
1773			@Override
1774			public void mouseClicked1(MouseEvent arg0) {
1775				// check because of possible transmission errors
1776				if (editArticle != null) {
1777					// check if it's a sales item to be safe
1778					if (editArticle.getClass().getSimpleName().equals(
1779							"SalesItem")) { //$NON-NLS-1$
1780						execute("BUY " + editArticle.getArticleNo()); //$NON-NLS-1$
1781						if (buyBool) {
1782							JOptionPane
1783									.showMessageDialog(
1784											null,
1785											Messages.getString("GUI.Congratulation"), //$NON-NLS-1$
1786											Messages.getString("GUI.ArticleBought"), //$NON-NLS-1$
1787											JOptionPane.INFORMATION_MESSAGE);
1788						} else {
1789							JOptionPane
1790									.showMessageDialog(
1791											null,
1792											Messages.getString("GUI.Sorry"), //$NON-NLS-1$
1793											Messages.getString("GUI.ArticleAlreadySold"), //$NON-NLS-1$
1794											JOptionPane.WARNING_MESSAGE);
1795						}
1796					}
1797				}
1798	;
1799		articleDetailsPanel.add(btnBuyArticle, "4, 22"); //$NON-NLS-1$
1800
1801		/**
1802		 * labels showing the current max bid put on the article by the user
1803		 */
1804		lblYourMaxBid = new JLabel(Messages.getString("GUI.YourMaxBid")); //$NON-NLS-1$
1805		articleDetailsPanel.add(lblYourMaxBid, "2, 20, right, default"); //$NON-NLS-1$
1806		lblMaxBidHere = new JLabel(""); //$NON-NLS-1$
1807		articleDetailsPanel.add(lblMaxBidHere, "4, 20"); //$NON-NLS-1$
1808
1809		/**
1810		 * button to bid an an article
1811		 */
1812		btnBidOnArticle = new JButton(Messages.getString("GUI.BidOnArticle")); //$NON-NLS-1$
1813		btnBidOnArticle.addMouseListener(new MouseAdapter() {
1814			@Override
1815			public void mouseClicked(MouseEvent arg0) {
1816				JTextField newBid = new JTextField();
1817
1818				Object[] newBidFields = {
1819						Messages.getString("GUI.PleaseEnterANewBid") //$NON-NLS-1$
1820								+ ((AuctionArticle) editArticle)
1821										.getNextBidStep(), newBid };
1822
1823				JOptionPane newBidPane = new JOptionPane(newBidFields,
1824						JOptionPane.PLAIN_MESSAGE, JOptionPane.OK_CANCEL_OPTION);
1825
1826				newBidPane.createDialog(null, Messages.getString("GUI.EnterNewBid")).setVisible(true); //$NON-NLS-1$
1827
1828				if (checkForMalformedValues(newBid.getText(), "price")) { //$NON-NLS-1$
1829					double newBidValue = Double.parseDouble(newBid.getText());
1830					if (newBidValue >= ((AuctionArticle) editArticle)
1831							.getNextBidStep()) {
1832						execute("BID " + editArticle.getArticleNo() + " " //$NON-NLS-1$ //$NON-NLS-2$
1833								+ newBidValue);
1834					} else {
1835
1836
1837						JOptionPane
1838								.showMessageDialog(
1839										null,
1840										Messages.getString("GUI.BidLow"), //$NON-NLS-1$
1841										Messages.getString("GUI.NewBidLow"), //$NON-NLS-1$
1842										JOptionPane.WARNING_MESSAGE);
1843
1844					}
1845				}
1846
1847				if (bidBool) {
1848					JOptionPane.showMessageDialog(null,
1849							Messages.getString("GUI.BidBeenAccepted"), //$NON-NLS-1$
1850							Messages.getString("GUI.BidAccepted"), JOptionPane.INFORMATION_MESSAGE); //$NON-NLS-1$
1851				} else {
1852					JOptionPane
1853							.showMessageDialog(
1854									null,
1855									Messages.getString("GUI.ProblemBid"), //$NON-NLS-1$
1856									Messages.getString("GUI.BidNotAccepted"), //$NON-NLS-1$
1857									JOptionPane.WARNING_MESSAGE);
1858				}
1859
1860			}
1861		});
1862		articleDetailsPanel.add(btnBidOnArticle, "4, 24"); //$NON-NLS-1$
1863
1864		/**
1865		 * button to change the bid set on the article by the user. changes the
1866		 * maxBid.
1867		 */
1868		btnChangeBid = new JButton(Messages.getString("GUI.ChangeBid")); //$NON-NLS-1$
1869		btnChangeBid.addMouseListener(new MouseAdapter() {
1870			@Override
1871			public void mouseClicked(MouseEvent arg0) {
1872
1873				JTextField newBid = new JTextField();
1874
1875				Object[] newBidFields = {
1876						Messages.getString("GUI.PleaseNewBidMin") //$NON-NLS-1$
1877								+ ((AuctionArticle) editArticle)
1878										.getNextBidStep(), newBid };
1879
1880				JOptionPane newBidPane = new JOptionPane(newBidFields,
1881						JOptionPane.PLAIN_MESSAGE, JOptionPane.OK_CANCEL_OPTION);
1882
1883				newBidPane.createDialog(null, Messages.getString("GUI.EnterNewBid1")).setVisible(true); //$NON-NLS-1$
1884
1885
1886
1887				if (checkForMalformedValues(newBid.getText(), "price")) { //$NON-NLS-1$
1888					double newBidValue = Double.parseDouble(newBid.getText());
1889					if (newBidValue >= ((AuctionArticle) editArticle)
1890							.getNextBidStep()) {
1891						execute("BID " + editArticle.getArticleNo() + " " //$NON-NLS-1$ //$NON-NLS-2$
1892								+ newBidValue);
1893
1894					} else {
1895						JOptionPane
1896								.showMessageDialog(
1897										null,
1898
1899										Messages.getString("GUI.BidLowPlease"), //$NON-NLS-1$
1900										Messages.getString("GUI.NewBidToLow"), //$NON-NLS-1$
1901
1902										JOptionPane.WARNING_MESSAGE);
1903					}
1904				}
1905
1906				if (bidBool) {
1907					JOptionPane.showMessageDialog(null,
1908							Messages.getString("GUI.YourBidHasAccepted"), //$NON-NLS-1$
1909							Messages.getString("GUI.BidAccepted"), JOptionPane.INFORMATION_MESSAGE); //$NON-NLS-1$
1910				} else {
1911					JOptionPane
1912							.showMessageDialog(
1913									null,
1914									Messages.getString("GUI.ProblemWithBid"), //$NON-NLS-1$
1915									Messages.getString("GUI.BidNotAccepted2"), //$NON-NLS-1$
1916									JOptionPane.WARNING_MESSAGE);
1917				}
1918
1919
1920			}
1921		});
1922		articleDetailsPanel.add(btnChangeBid, "4, 26"); //$NON-NLS-1$
1923
1924		articleTableBuyTabScrollPane = new JScrollPane();
1925		buyTabPanel.add(articleTableBuyTabScrollPane, "4, 8, 5, 1, fill, fill"); //$NON-NLS-1$
1926
1927		/**
1928		 * initial table for not having an empty spot in the gui
1929		 */
1930
1931		Object[][] data = new Object[0][0];
1932		String[] columnNamesArticleTableBuyTab = { Messages.getString("GUI.title5"), Messages.getString("GUI.cuurentPrice5"), //$NON-NLS-1$ //$NON-NLS-2$
1933				Messages.getString("GUI.timeLeft5") }; //$NON-NLS-1$
1934		articleTableBuyTab = new JTable(data, columnNamesArticleTableBuyTab);
1935
1936		articleTableBuyTab.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
1937		articleTableBuyTab.setAutoCreateRowSorter(true);
1938		articleTableBuyTabScrollPane.setViewportView(articleTableBuyTab);
1939
1940		categoryListBuyTabScrollPane = new JScrollPane();
1941		buyTabPanel.add(categoryListBuyTabScrollPane, "2, 8, fill, fill"); //$NON-NLS-1$
1942
1943		/**
1944		 * category list in buy tab. if a category is selected the
1945		 * articleTableBuyTab table is filled with all articles from this
1946		 * category
1947		 */
1948		categoriesListModel = new DefaultListModel();
1949		categoryListBuyTab = new JList(categoriesListModel);
1950		categoryListBuyTab
1951				.addListSelectionListener(new ListSelectionListener() {
1952					public void valueChanged(ListSelectionEvent arg0) {
1953						if (arg0.getValueIsAdjusting()) {
1954							String selectedCategory = (String) categoryListBuyTab
1955									.getSelectedValue();
1956							String[] catNameSplit = selectedCategory.split(" "); //$NON-NLS-1$
1957							// works even if no user is logged in
1958							if (socket == null) {
1959								connectToServer();
1960								execute("LIST CATEGORY " + catNameSplit[0]); //$NON-NLS-1$
1961								execute("LOGOUT"); //$NON-NLS-1$
1962							} else {
1963								// gets all articles of selected category
1964								execute("LIST CATEGORY " + catNameSplit[0]); //$NON-NLS-1$
1965							}
1966
1967							Iterator<Article> checkForSoldArticlesIterator = articleList
1968									.iterator();
1969							int numberOfSoldArticles = 0;
1970							while (checkForSoldArticlesIterator.hasNext()) {
1971								Article actual = checkForSoldArticlesIterator
1972										.next();
1973								if (actual.isSold()) {
1974									numberOfSoldArticles++;
1975								}
1976
1977							}
1978
1979							if (!articleList.isEmpty()) {
1980								// number of rows => number of articles minus
1981								// the sold ones
1982								Object[][] data = new Object[articleList.size()
1983										- numberOfSoldArticles][4];
1984								String[] columnNamesArticleTableBuyTab = {
1985										Messages.getString("GUI.title6"), Messages.getString("GUI.cuurentPrice6"), Messages.getString("GUI.timeLeft6"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
1986										Messages.getString("GUI.ArticleNo6") }; //$NON-NLS-1$
1987
1988								// counter to prevent running out of array
1989								// bounds
1990								int counter = 0;
1991								// first the salesitems
1992								Iterator<Article> it = articleList.iterator();
1993								while (it.hasNext()) {
1994									Object actual = it.next();
1995
1996									if (actual.getClass().getSimpleName()
1997											.equals("SalesItem")) { //$NON-NLS-1$
1998										// if article isn't sold add it to the
1999										// list
2000										if (!((SalesItem) actual).isSold()) {
2001											data[counter][0] = ((SalesItem) actual)
2002													.getTitle();
2003											data[counter][1] = ((SalesItem) actual)
2004													.getPrice();
2005											data[counter][2] = ""; //$NON-NLS-1$
2006											data[counter][3] = ((SalesItem) actual)
2007													.getArticleNo();
2008											counter++;
2009										}
2010									}
2011								}
2012
2013								// then the auction items
2014								Iterator<Article> it2 = articleList.iterator();
2015								while (it2.hasNext()) {
2016									Object actual = it2.next();
2017
2018									if (actual.getClass().getSimpleName()
2019											.equals("AuctionArticle")) { //$NON-NLS-1$
2020										// if article isn't sold add it to the
2021										// list
2022										if (!((AuctionArticle) actual).isSold()) {
2023											data[counter][0] = ((AuctionArticle) actual)
2024													.getTitle();
2025											
2026											//if the minbiddingprice is higher than the currentmaxbid the minbidding price is shown
2027											//this should ONLY be the case if there is no bid yet. then the currentmaxbid is 0.00
2028											if( ((AuctionArticle) actual).getMinBiddingPrice() > ((AuctionArticle) actual).getCurrentMaxBid() ){
2029												data[counter][1] = ((AuctionArticle) actual).getMinBiddingPrice();
2030												
2031											//if the currentmaxbid is higher than the minbiddingprice show the currentmax bid	
2032											}else{
2033												data[counter][1] = ((AuctionArticle) actual)
2034												.getCurrentMaxBid();
2035											}
2036											
2037											data[counter][2] = dateDifferenceToString(((AuctionArticle) actual)
2038													.getAuctionEnd());
2039											data[counter][3] = ((AuctionArticle) actual)
2040													.getArticleNo();
2041											counter++;
2042										}
2043									}
2044								}
2045
2046								articleTableBuyTab = new JTable(new MyTableModel(columnNamesArticleTableBuyTab, data));
2047								articleTableBuyTab
2048										.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
2049								articleTableBuyTab.setAutoCreateRowSorter(true);
2050								articleTableBuyTabScrollPane
2051										.setViewportView(articleTableBuyTab);
2052
2053								// set column widths so that they fill the panel
2054								articleTableBuyTab.getColumnModel()
2055										.getColumn(0).setPreferredWidth(268);
2056								articleTableBuyTab.getColumnModel()
2057										.getColumn(1).setPreferredWidth(80);
2058								articleTableBuyTab.getColumnModel()
2059										.getColumn(2).setPreferredWidth(110);
2060
2061							}
2062						}
2063					}
2064				});
2065		categoryListBuyTab
2066				.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
2067		categoryListBuyTab.setLayoutOrientation(JList.VERTICAL);
2068		categoryListBuyTab.setVisible(true);
2069
2070		categoryListBuyTabScrollPane.setViewportView(categoryListBuyTab);
2071
2072		//button will most likely be deleted
2073		// btnShowSelectedCategory = new JButton("show selected Category");
2074		// btnShowSelectedCategory.addMouseListener(new MouseAdapter() {
2075		// @Override
2076		// public void mouseClicked(MouseEvent arg0) {
2077		// String selectedCategory = (String)
2078		// categoryListBuyTab.getSelectedValue();
2079		// String[] catNameSplit = selectedCategory.split(" ");
2080		// execute("LIST CATEGORY "+catNameSplit[0]);
2081		//				
2082		// if(!articleList.isEmpty()){
2083		// Object[][] data = new Object[articleList.size()][3];
2084		// String[] columnNamesArticleTableBuyTab = { "Title", "Current Price",
2085		// "Time left" };
2086		//					
2087		// //counter to prevent running out of array bounds
2088		// int counter = 0;
2089		// //first the salesitems
2090		// Iterator<Article> it = articleList.iterator();
2091		// while (it.hasNext()){
2092		// Object actual = it.next();
2093		//						
2094		// if(actual.getClass().getSimpleName().equals("SalesItem")){
2095		//						
2096		// data[counter][0] = ((SalesItem) actual).getTitle();
2097		// data[counter][1] = ((SalesItem) actual).getPrice();
2098		// data[counter][2] = "";
2099		// counter++;
2100		// }
2101		// }
2102		//					
2103		// //then the auction items
2104		// Iterator<Article> it2 = articleList.iterator();
2105		// while(it2.hasNext()){
2106		// Object actual = it2.next();
2107		//						
2108		// if(actual.getClass().getSimpleName().equals("AuctionArticle")){
2109		// data[counter][0] = ((AuctionArticle) actual).getTitle();
2110		// data[counter][1] = ((AuctionArticle) actual).getCurrentMaxBid();
2111		// data[counter][2] = dateDifferenceToString(((AuctionArticle)
2112		// actual).getAuctionEnd());
2113		// counter++;
2114		// }
2115		// }
2116		//					
2117		//					
2118		// articleTableBuyTab = new JTable(data, columnNamesArticleTableBuyTab);
2119		// articleTableBuyTab.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
2120		// articleTableBuyTab.setAutoCreateRowSorter(true);
2121		// articleTableBuyTabScrollPane.setViewportView(articleTableBuyTab);
2122		//					
2123		// //set column widths so that they fill the panel
2124		// articleTableBuyTab.getColumnModel().getColumn(0).setPreferredWidth(240);
2125		// articleTableBuyTab.getColumnModel().getColumn(1).setPreferredWidth(80);
2126		// articleTableBuyTab.getColumnModel().getColumn(2).setPreferredWidth(110);
2127		//					
2128		//
2129		// }
2130		//
2131		// }
2132		// });
2133		// buyTabPanel.add(btnShowSelectedCategory, "2, 10, center, default");
2134
2135		/**
2136		 * shows the article details of the article selected in the
2137		 * articleTableBuyTab jtable
2138		 */
2139		btnShowArticleDetails = new JButton(Messages.getString("GUI.showArticleDetails")); //$NON-NLS-1$
2140		btnShowArticleDetails.addMouseListener(new MouseAdapter() {
2141			@Override
2142			public void mouseClicked(MouseEvent arg0) {
2143
2144				// check if a row is selected (-1 means no row selected)
2145				if (articleTableBuyTab.getSelectedRow() != -1) {
2146					int articleToGetId = (Integer) articleTableBuyTab
2147							.getValueAt(articleTableBuyTab.getSelectedRow(), 3);
2148
2149					execute("SHOW ARTICLE " + articleToGetId); //$NON-NLS-1$
2150
2151					// check because of possible transmission errors
2152					if (editArticle != null) {
2153						lblArticleTitleHere.setText(editArticle.getTitle());
2154						if (editArticle.getClass().getSimpleName().equals(
2155								"SalesItem")) { //$NON-NLS-1$
2156							SalesItem tempItem = (SalesItem) editArticle;
2157							lblCurrentPriceHere.setText(String.valueOf(tempItem
2158									.getPrice()));
2159							// sales items don't have an auction end or bids and
2160							// you can't buy them
2161							lblAuctionEnd.setVisible(false);
2162							lblAuctionEndAnd.setVisible(false);
2163							lblNoOfBids.setVisible(false);
2164							lblDisplayNoOfBids.setVisible(false);
2165							btnBuyArticle.setVisible(true);
2166							btnBidOnArticle.setVisible(false);
2167							btnChangeBid.setVisible(false);
2168
2169							lblMaxBidHere.setVisible(false);
2170							lblYourMaxBid.setVisible(false);
2171
2172						} else if (editArticle.getClass().getSimpleName()
2173								.equals("AuctionArticle")) { //$NON-NLS-1$
2174							AuctionArticle tempArticle = (AuctionArticle) editArticle;
2175							
2176							//if the minbiddingprice is higher than the currentmaxbid the minbidding price is shown
2177							//this should ONLY be the case if there is no bid yet. then the currentmaxbid is 0.00
2178							if( tempArticle.getMinBiddingPrice() > tempArticle.getCurrentMaxBid() ){
2179							lblCurrentPriceHere.setText(String
2180
2181									.valueOf(tempArticle.getMinBiddingPrice())
2182									+ " EUR");
2183							
2184							//if the currentmaxbid is higher than the minbiddingprice show the currentmax bid
2185							}else{
2186								lblCurrentPriceHere.setText(String
2187										.valueOf(tempArticle.getCurrentMaxBid())
2188										+ " EUR");
2189							}
2190							
2191
2192							lblAuctionEndAnd
2193									.setText(dateDifferenceToString(tempArticle
2194											.getAuctionEnd())
2195											+ " (" //$NON-NLS-1$
2196											+ gregorianToString(tempArticle
2197													.getAuctionEnd(), "long") //$NON-NLS-1$
2198											+ ")"); //$NON-NLS-1$
2199							lblDisplayNoOfBids.setText(String
2200									.valueOf(tempArticle.getBidList().size()));
2201
2202							// //sales items don't have an auction end or bids
2203							// but auction articles do
2204							lblAuctionEnd.setVisible(true);
2205							lblAuctionEndAnd.setVisible(true);
2206							lblNoOfBids.setVisible(true);
2207							lblDisplayNoOfBids.setVisible(true);
2208							btnBuyArticle.setVisible(false);
2209
2210							lblMaxBidHere.setVisible(true);
2211							lblYourMaxBid.setVisible(true);
2212
2213							// determin whether to show the bid (for the first
2214							// time) on article or the change bid button
2215							Iterator<Bid> it = tempArticle.getBidList()
2216									.iterator();
2217							boolean userAlreadyBidOnArticle = false;
2218							double userCurrentMaxBid = 0;
2219							while (it.hasNext()) {
2220								Bid actual = it.next();
2221								System.out.println("user corresponding to the bid: "+actual.getCorrespondingUser().getUsername());
2222								System.out.println("user currently logged in: "+usernameTempSaved);
2223								System.out.println("are the the same? "+actual.getCorrespondingUser().getUsername().equals(usernameTempSaved));
2224								if (actual.getCorrespondingUser().getUsername().equals(
2225										usernameTempSaved)) {
2226									userAlreadyBidOnArticle = true;
2227									// user's current bid on article
2228									userCurrentMaxBid = actual.getMaxBid();
2229									System.out.println(usernameTempSaved+" max bid: "+actual.getMaxBid());
2230								}
2231							}
2232							if (userAlreadyBidOnArticle) {
2233								btnBidOnArticle.setVisible(false);
2234								btnChangeBid.setVisible(true);
2235								lblYourMaxBid.setVisible(true);
2236								lblMaxBidHere.setVisible(true);
2237								lblMaxBidHere.setText(String
2238										.valueOf(userCurrentMaxBid));
2239							} else {
2240								btnBidOnArticle.setVisible(true);
2241								btnChangeBid.setVisible(false);
2242								lblMaxBidHere.setVisible(false);
2243								lblYourMaxBid.setVisible(false);
2244							}
2245						}
2246
2247						articleDescriptionTextAreaBuyTab.setText(editArticle
2248								.getDescription());
2249						lblArticlenoHere.setText(String.valueOf(editArticle
2250								.getArticleNo()));
2251						lblVendorNameHere.setText(editArticle.getVendor()
2252								.getUsername());
2253
2254						// did the vendor select show phone?
2255						if (editArticle.isShowPhoneNoSet()) {
2256							lblPhonenoHere.setText(editArticle.getVendor()
2257									.getPhoneNo());
2258						} else {
2259							lblPhonenoHere.setText(Messages.getString("GUI.NotVisible")); //$NON-NLS-1$
2260						}
2261						// did the vendor select show email?
2262						if (editArticle.isShowEmailSet()) {
2263							lblEmailHere.setText(editArticle.getVendor()
2264									.getEmail());
2265						} else {
2266							lblEmailHere.setText(Messages.getString("GUI.NotVisible2")); //$NON-NLS-1$
2267						}
2268					}
2269
2270					// index -1 => no article selected
2271				} else {
2272					JOptionPane
2273							.showMessageDialog(
2274									null,
2275									Messages.getString("GUI.NoSelected"), //$NON-NLS-1$
2276									Messages.getString("GUI.NoSelectedArticle"), //$NON-NLS-1$
2277									JOptionPane.WARNING_MESSAGE);
2278
2279				}
2280
2281			}
2282		});
2283		buyTabPanel.add(btnShowArticleDetails, "4, 10, 3, 1, center, default"); //$NON-NLS-1$
2284
2285		/**
2286		 * the sell tab
2287		 */
2288		sellTabPanel = new JPanel();
2289
2290		tabbedPane.addTab("Sell", null, sellTabPanel, null);
2291		sellTabPanel.setLayout(new FormLayout(new ColumnSpec[] {
2292				FormFactory.RELATED_GAP_COLSPEC,
2293				ColumnSpec.decode("210px"),
2294				FormFactory.RELATED_GAP_COLSPEC,
2295				ColumnSpec.decode("150px"),
2296				FormFactory.RELATED_GAP_COLSPEC,
2297				ColumnSpec.decode("30px"),
2298				FormFactory.RELATED_GAP_COLSPEC,
2299				ColumnSpec.decode("100px"),
2300				FormFactory.RELATED_GAP_COLSPEC,
2301				ColumnSpec.decode("160px"),
2302				FormFactory.RELATED_GAP_COLSPEC,
2303				ColumnSpec.decode("150px"),
2304				FormFactory.RELATED_GAP_COLSPEC,
2305				ColumnSpec.decode("140px"),
2306				FormFactory.RELATED_GAP_COLSPEC,
2307				FormFactory.DEFAULT_COLSPEC,},
2308			new RowSpec[] {
2309				FormFactory.RELATED_GAP_ROWSPEC,
2310				RowSpec.decode("default:grow"),
2311				FormFactory.RELATED_GAP_ROWSPEC,
2312				FormFactory.DEFAULT_ROWSPEC,
2313				FormFactory.RELATED_GAP_ROWSPEC,
2314				FormFactory.DEFAULT_ROWSPEC,
2315				FormFactory.RELATED_GAP_ROWSPEC,
2316				RowSpec.decode("default:grow"),
2317				FormFactory.RELATED_GAP_ROWSPEC,
2318				FormFactory.DEFAULT_ROWSPEC,
2319				FormFactory.RELATED_GAP_ROWSPEC,
2320				FormFactory.DEFAULT_ROWSPEC,
2321				FormFactory.RELATED_GAP_ROWSPEC,
2322				RowSpec.decode("max(19dlu;min)"),
2323				FormFactory.RELATED_GAP_ROWSPEC,
2324				RowSpec.decode("max(19dlu;min)"),
2325				FormFactory.RELATED_GAP_ROWSPEC,
2326				FormFactory.DEFAULT_ROWSPEC,
2327				FormFactory.RELATED_GAP_ROWSPEC,
2328				FormFactory.DEFAULT_ROWSPEC,
2329				FormFactory.RELATED_GAP_ROWSPEC,
2330				FormFactory.DEFAULT_ROWSPEC,
2331				FormFactory.RELATED_GAP_ROWSPEC,
2332				FormFactory.DEFAULT_ROWSPEC,
2333				FormFactory.RELATED_GAP_ROWSPEC,
2334				FormFactory.DEFAULT_ROWSPEC,
2335				FormFactory.RELATED_GAP_ROWSPEC,
2336				FormFactory.DEFAULT_ROWSPEC,
2337				FormFactory.RELATED_GAP_ROWSPEC,
2338				FormFactory.DEFAULT_ROWSPEC,}));
2339
2340
2341		/**
2342		 * combobox representing choices for article insertion (sales item or
2343		 * auction article) location: sell tab, left hand side
2344		 */
2345		String[] articleInsertionChoices = { Messages.getString("GUI.InsertSalesItem"), //$NON-NLS-1$
2346				Messages.getString("GUI.inerstAuctionArticle") }; //$NON-NLS-1$
2347		comboBox = new JComboBox(articleInsertionChoices);
2348		comboBox.addActionListener(new ActionListener() {
2349			public void actionPerformed(ActionEvent arg0) {
2350				if (comboBox.getSelectedItem().equals(Messages.getString("GUI.InsertSalesItem2"))) { //$NON-NLS-1$
2351					txtAuctionEndDate.setVisible(false);
2352					lblFormatYymmdd.setVisible(false);
2353
2354				} else if (comboBox.getSelectedItem().equals(
2355						Messages.getString("GUI.inerstAuctionArticle2"))) { //$NON-NLS-1$
2356					txtAuctionEndDate.setVisible(true);
2357					lblFormatYymmdd.setVisible(true);
2358				}
2359
2360			}
2361		});
2362		sellTabPanel.add(comboBox, "2, 2"); //$NON-NLS-1$
2363
2364		/**
2365		 * updates the article list shown in the sell tab. shows the articles
2366		 * offered by the user currently logged in. location: selll tab, right
2367		 * hand side
2368		 */
2369		btnUpdateArticleList = new JButton(Messages.getString("GUI.UpdateList")); //$NON-NLS-1$
2370		btnUpdateArticleList.addMouseListener(new MouseAdapter() {
2371			@Override
2372			public void mouseClicked(MouseEvent arg0) {
2373				String[] columnNamesArticleListChangeArticle = { Messages.getString("GUI.ArtNo"), //$NON-NLS-1$
2374						Messages.getString("GUI.Title7"), Messages.getString("GUI.Describtion7"), Messages.getString("GUI.CurrentPrice7"), Messages.getString("GUI.TimeLeft7"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
2375						Messages.getString("GUI.Status7") }; //$NON-NLS-1$
2376
2377				String articlesByUser = usernameTempSaved;
2378				if (checkForMalformedValues(articlesByUser, Messages.getString("GUI.Username7"))) { //$NON-NLS-1$
2379					execute("LIST USER " + articlesByUser); //$NON-NLS-1$
2380					Object[][] data = new Object[articleList.size()][6];
2381					if (articleList.size() != 0) {
2382						// counter to prevent running out of array bounds
2383						int counter = 0;
2384						// first the salesitems
2385						Iterator<Article> it = articleList.iterator();
2386						while (it.hasNext()) {
2387							Object actual = it.next();
2388
2389							if (actual.getClass().getSimpleName().equals(
2390									"SalesItem")) { //$NON-NLS-1$
2391								data[counter][0] = ((SalesItem) actual)
2392										.getArticleNo();
2393								data[counter][1] = ((SalesItem) actual)
2394										.getTitle();
2395								data[counter][2] = ((SalesItem) actual)
2396										.getDescription();
2397								data[counter][3] = ((SalesItem) actual)
2398										.getPrice();
2399								data[counter][4] = ""; //$NON-NLS-1$
2400								if (((SalesItem) actual).isSold()) {
2401									data[counter][5] = "sold"; //$NON-NLS-1$
2402								} else {
2403									data[counter][5] = "available"; //$NON-NLS-1$
2404								}
2405								counter++;
2406							}
2407						}
2408
2409						// then the auction items
2410						Iterator<Article> it2 = articleList.iterator();
2411						while (it2.hasNext()) {
2412							Object actual = it2.next();
2413
2414							if (actual.getClass().getSimpleName().equals(
2415									"AuctionArticle")) { //$NON-NLS-1$
2416								data[counter][0] = ((AuctionArticle) actual)
2417										.getArticleNo();
2418								data[counter][1] = ((AuctionArticle) actual)
2419										.getTitle();
2420								data[counter][2] = ((AuctionArticle) actual)
2421										.getDescription();
2422								//if the minbiddingprice is higher than the currentmaxbid the minbidding price is shown
2423								//this should ONLY be the case if there is no bid yet. then the currentmaxbid is 0.00
2424								if( ((AuctionArticle) actual).getMinBiddingPrice() > ((AuctionArticle) actual).getCurrentMaxBid() ){
2425									data[counter][3] = ((AuctionArticle) actual).getMinBiddingPrice();
2426									
2427								//if the currentmaxbid is higher than the minbiddingprice show the currentmax bid	
2428								}else{
2429									data[counter][3] = ((AuctionArticle) actual)
2430									.getCurrentMaxBid();
2431								}
2432								
2433								data[counter][4] = dateDifferenceToString(((AuctionArticle) actual)
2434										.getAuctionEnd());
2435								if (((AuctionArticle) actual).isSold()) {
2436									data[counter][5] = "sold"; //$NON-NLS-1$
2437								} else {
2438									data[counter][5] = "available"; //$NON-NLS-1$
2439								}
2440								counter++;
2441							}
2442						}
2443						
2444						//reset fields
2445						//TODO reset jtable on right side of sell tab
2446						currentArticleCategoriesListModel.removeAllElements();
2447						txtrCurrentDescription.setText("current description");
2448						txtrAddToCurrentDescription.setText("add to current description");
2449						changeArticleDataNewCategoryTextField.setText("new Category");
2450						changeArticleDataChangePriceTextField.setText("price");
2451
2452						showMyArticlesTable = new JTable(new MyTableModel(columnNamesArticleListChangeArticle, data));
2453						showMyArticlesTable
2454								.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
2455						showMyArticlesTable.setAutoCreateRowSorter(true);
2456
2457						showMyArticlesTableScrollPane
2458								.setViewportView(showMyArticlesTable);
2459					}else{
2460						//show empty jtable
2461						showMyArticlesTable.removeAll();
2462						Object[][] data2 = new Object[0][0];
2463						showMyArticlesTable.setModel(new MyTableModel(columnNamesArticleListChangeArticle, data2));
2464						showMyArticlesTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
2465						showMyArticlesTable.setAutoCreateRowSorter(true);
2466						showMyArticlesTableScrollPane.setViewportView(showMyArticlesTable);
2467						
2468						
2469						JOptionPane.showMessageDialog(null,
2470								"You don't sell anything. So we cannot show you what you sell. Sounds reasonable doesn't it?",
2471								"No items found", JOptionPane.WARNING_MESSAGE);
2472					}
2473				}
2474			}
2475		});
2476
2477		sellTabPanel.add(btnUpdateArticleList, "10, 2"); //$NON-NLS-1$
2478
2479
2480		/**
2481		 * loads the article selected in showMyArticlesTable into the article
2482		 * change interface location: sell tab. right hand side
2483		 */
2484		btnEditSelectedArticle = new JButton(Messages.getString("GUI.EditArticle")); //$NON-NLS-1$
2485		btnEditSelectedArticle.addMouseListener(new MouseAdapter() {
2486			@Override
2487			public void mouseClicked(MouseEvent arg0) {
2488				// check if an article is selected
2489				if (showMyArticlesTable.getSelectedRow() != -1) {
2490					int articleIdToChange = (Integer) showMyArticlesTable
2491							.getValueAt(showMyArticlesTable.getSelectedRow(), 0);
2492
2493					execute("SHOW ARTICLE " + articleIdToChange); //$NON-NLS-1$
2494
2495
2496					// check because of possible transmission errors
2497					if (editArticle != null) {
2498						txtrCurrentDescription.setText(editArticle
2499								.getDescription());
2500
2501						if (editArticle.getClass().getSimpleName().equals(
2502								"AuctionArticle")) { //$NON-NLS-1$
2503							changeArticleDataChangePriceTextField
2504									.setVisible(false);
2505							btnSetNewPrice.setVisible(false);
2506
2507						} else if (editArticle.getClass().getSimpleName()
2508								.equals("SalesItem")) { //$NON-NLS-1$
2509							changeArticleDataChangePriceTextField
2510									.setVisible(true);
2511							SalesItem sale = (SalesItem) editArticle;
2512							changeArticleDataChangePriceTextField
2513									.setText(String.valueOf(sale.getPrice()));
2514							btnSetNewPrice.setVisible(true);
2515						}
2516						// clear categorylist in edit panel
2517						currentArticleCategoriesListModel.removeAllElements();
2518
2519						ArrayList<Category> tempCategoryList = editArticle
2520								.getCategoryList();
2521						Iterator<Category> it = tempCategoryList.iterator();
2522
2523						while (it.hasNext()) {
2524							Category actual = it.next();
2525							currentArticleCategoriesListModel.add(
2526									currentArticleCategoriesListModel.size(),
2527									actual.getCatName());
2528							
2529						}
2530						
2531					}
2532				} else {
2533					JOptionPane.showMessageDialog(null,
2534							Messages.getString("GUI.SelectArticle"), //$NON-NLS-1$
2535							Messages.getString("GUI.NoSelectArticle"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
2536				}
2537			}
2538		});
2539
2540		sellTabPanel.add(btnEditSelectedArticle, "12, 2"); //$NON-NLS-1$
2541
2542
2543		showMyArticlesPanel = new JPanel();
2544
2545		sellTabPanel.add(showMyArticlesPanel, "10, 3, 3, 7, fill, fill"); //$NON-NLS-1$
2546
2547		showMyArticlesPanel.setLayout(new FormLayout(new ColumnSpec[] {
2548				FormFactory.RELATED_GAP_COLSPEC,
2549				ColumnSpec.decode("default:grow"), }, new RowSpec[] { //$NON-NLS-1$
2550				FormFactory.RELATED_GAP_ROWSPEC,
2551				RowSpec.decode("default:grow"), })); //$NON-NLS-1$
2552
2553		String[] columnNamesArticleListChangeArticle = { "ArticleNo",
2554				"Title", "Description", "Current Price", "Time left",
2555				"Status" };
2556		showMyArticlesTable = new JTable();
2557		showMyArticlesTable.setModel(new MyTableModel(columnNamesArticleListChangeArticle,new Object[0][0]));
2558		showMyArticlesTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
2559		showMyArticlesTable.setAutoCreateRowSorter(true);
2560		
2561		/**
2562		 * scrollpane for showMyArticlesTable
2563		 */
2564		showMyArticlesTableScrollPane = new JScrollPane();
2565		showMyArticlesPanel.add(showMyArticlesTableScrollPane,
2566
2567
2568				"2, 2, fill, fill");
2569		showMyArticlesTableScrollPane.setViewportView(showMyArticlesTable);
2570
2571
2572		/**
2573		 * deleted the selected article if it is not sold and in case of an
2574		 * auction article if there is no bid on it
2575		 */
2576		btnDeleteSelectedArticle = new JButton(
2577				Messages.getString("GUI.deletArticle")); //$NON-NLS-1$
2578		btnDeleteSelectedArticle.addMouseListener(new MouseAdapter() {
2579			@Override
2580			public void mouseClicked(MouseEvent arg0) {
2581				if (showMyArticlesTable.getSelectedRow() != -1) {
2582					int articleIdToChange = (Integer) showMyArticlesTable
2583							.getValueAt(showMyArticlesTable.getSelectedRow(), 0);
2584					execute("SHOW ARTICLE " + articleIdToChange); //$NON-NLS-1$
2585
2586					// check because of possible transmission errors
2587					if (editArticle != null) {
2588						// is the article to be deleted an auction article?
2589						if (editArticle.getClass().getSimpleName().equals(
2590								"AuctionArticle")) { //$NON-NLS-1$
2591							AuctionArticle auction = (AuctionArticle) editArticle;
2592							// are bids given for this auction article? if no,
2593							// go on
2594							if (auction.getBidList().isEmpty()) {
2595								// is the auction article sold? if no, go on
2596								// delete it.
2597								// probably unnecessary check but better save
2598								// than sorry.
2599								if (!auction.isSold()) {
2600									execute("DELETE ARTICLE " //$NON-NLS-1$
2601											+ articleIdToChange);
2602								}
2603								// bids on article -> cannot delete it
2604							} else if (!auction.getBidList().isEmpty()) {
2605								JOptionPane
2606										.showMessageDialog(
2607												null,
2608												Messages.getString("GUI.ConnotDelete"), //$NON-NLS-1$
2609												Messages.getString("GUI.DeletionError"), //$NON-NLS-1$
2610												JOptionPane.WARNING_MESSAGE);
2611							}
2612
2613							// or is the article to be deleted a sales item?
2614						} else if (editArticle.getClass().getSimpleName()
2615								.equals("SalesItem")) { //$NON-NLS-1$
2616							SalesItem sale = (SalesItem) editArticle;
2617							// is sales item already sold? if no, delete it
2618							if (!sale.isSold()) {
2619								execute("DELETE ARTICLE " + articleIdToChange); //$NON-NLS-1$
2620							}
2621						}
2622					}
2623				}
2624			}
2625		});
2626		txtArticleTitle = new JTextField();
2627		txtArticleTitle.setText(Messages.getString("GUI.ArticleTitle")); //$NON-NLS-1$
2628		sellTabPanel.add(txtArticleTitle, "2, 4, fill, default"); //$NON-NLS-1$
2629		txtArticleTitle.setColumns(10);
2630
2631		sellTabPanel.add(btnDeleteSelectedArticle, "14, 4"); //$NON-NLS-1$
2632
2633
2634		/**
2635		 * article title textfield for article insertion location: sell tab,
2636		 * left hand side
2637		 */
2638
2639		/**
2640		 * sets the selected article to unsold if the article was sold and the
2641		 * buyer didn't pay
2642		 */
2643		// work-around with html to be able to have a two line button
2644		btnSetSelectedArticle = new JButton(
2645				Messages.getString("GUI.selectedArticleTo")); //$NON-NLS-1$
2646		btnSetSelectedArticle.addMouseListener(new MouseAdapter() {
2647			@Override
2648			public void mouseClicked(MouseEvent arg0) {
2649
2650				// check if an article is selected
2651				if (showMyArticlesTable.getSelectedRow() != -1) {
2652					int articleIdToChange = (Integer) showMyArticlesTable
2653							.getValueAt(showMyArticlesTable.getSelectedRow(), 0);
2654					execute("SHOW ARTICLE " + articleIdToChange); //$NON-NLS-1$
2655
2656					// check because of possible transmission errors
2657					if (editArticle != null) {
2658						// if the article is marked as sold, change it
2659						if (editArticle.isSold()) {
2660							if (editArticle.getClass().getSimpleName().equals(
2661									"AuctionArticle")) { //$NON-NLS-1$
2662
2663								// get the new auction end date
2664								JTextField newAuctionEndDate = new JTextField();
2665								Object[] newAuctionEndDateFields = {
2666										Messages.getString("GUI.PleaseEnterNewAuction"), //$NON-NLS-1$
2667										newAuctionEndDate };
2668
2669								JOptionPane newAuctionEndDatePane = new JOptionPane(
2670										newAuctionEndDateFields,
2671										JOptionPane.PLAIN_MESSAGE,
2672										JOptionPane.OK_CANCEL_OPTION);
2673								newAuctionEndDatePane.createDialog(null,
2674										Messages.getString("GUI.AuctionEndDate0")) //$NON-NLS-1$
2675										.setVisible(true);
2676
2677								String newAuctionEndDateString = newAuctionEndDate
2678										.getText();
2679								if (checkForMalformedValues(
2680										newAuctionEndDateString, "auctionend")) { //$NON-NLS-1$
2681									execute("UNSOLD " + articleIdToChange); //$NON-NLS-1$
2682									execute("CHANGE AUCTIONEND " //$NON-NLS-1$
2683											+ articleIdToChange + " TO " //$NON-NLS-1$
2684											+ newAuctionEndDateString);
2685									
2686									//if the change to unsold was successfull show it
2687									if(changeSoldFlagBool){
2688										JOptionPane
2689										.showMessageDialog(
2690												null,
2691												"The article is now set to unsold.",
2692												"Article set to unsold",
2693												JOptionPane.WARNING_MESSAGE);
2694										
2695									//if not show it too	
2696									}else{
2697										JOptionPane
2698										.showMessageDialog(
2699												null,
2700												"The article couldn't be set to unsold.",
2701												"Article NOT set to unsold",
2702												JOptionPane.WARNING_MESSAGE);
2703									}	
2704								}
2705								
2706							} else if (editArticle.getClass().getSimpleName()
2707
2708									.equals("SalesItem")) {
2709								execute("UNSOLD " + articleIdToChange);
2710								
2711								//if the change to unsold was successfull show it
2712								if(changeSoldFlagBool){
2713									JOptionPane
2714									.showMessageDialog(
2715											null,
2716											"The article is now set to unsold.",
2717											"Article set to unsold",
2718											JOptionPane.WARNING_MESSAGE);
2719									
2720								//if not show it too	
2721								}else{
2722									JOptionPane
2723									.showMessageDialog(
2724											null,
2725											"The article couldn't be set to unsold.",
2726											"Article NOT set to unsold",
2727											JOptionPane.WARNING_MESSAGE);
2728								}	
2729
2730							}
2731
2732							// i have no idea how to make this easier. so
2733							// another big piece of copy paste code
2734							// ///////////start copy paste code
2735							String[] columnNamesArticleListChangeArticle = {
2736									Messages.getString("GUI.ArticleNo8"), Messages.getString("GUI.Title8"), Messages.getString("GUI.Description8"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
2737									Messages.getString("GUI.CurrentPrice8"), Messages.getString("GUI.TimeLeft8"), Messages.getString("GUI.Status") }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
2738
2739							String articlesByUser = usernameTempSaved;
2740							if (checkForMalformedValues(articlesByUser,
2741									Messages.getString("GUI.username8"))) { //$NON-NLS-1$
2742								execute("LIST USER " + articlesByUser); //$NON-NLS-1$
2743								Object[][] data = new Object[articleList.size()][6];
2744								if (articleList.size() != 0) {
2745									// counter to prevent running out of array
2746									// bounds
2747									int counter = 0;
2748									// first the salesitems
2749									Iterator<Article> it = articleList
2750											.iterator();
2751									while (it.hasNext()) {
2752										Object actual = it.next();
2753
2754										if (actual.getClass().getSimpleName()
2755												.equals("SalesItem")) { //$NON-NLS-1$
2756											data[counter][0] = ((SalesItem) actual)
2757													.getArticleNo();
2758											data[counter][1] = ((SalesItem) actual)
2759													.getTitle();
2760											data[counter][2] = ((SalesItem) actual)
2761													.getDescription();
2762											data[counter][3] = ((SalesItem) actual)
2763													.getPrice();
2764											data[counter][4] = ""; //$NON-NLS-1$
2765											if (((SalesItem) actual).isSold()) {
2766												data[counter][5] = "sold"; //$NON-NLS-1$
2767											} else {
2768												data[counter][5] = "available"; //$NON-NLS-1$
2769											}
2770											counter++;
2771										}
2772									}
2773
2774									// then the auction items
2775									Iterator<Article> it2 = articleList
2776											.iterator();
2777									while (it2.hasNext()) {
2778										Object actual = it2.next();
2779
2780										if (actual.getClass().getSimpleName()
2781												.equals("AuctionArticle")) { //$NON-NLS-1$
2782											data[counter][0] = ((AuctionArticle) actual)
2783													.getArticleNo();
2784											data[counter][1] = ((AuctionArticle) actual)
2785													.getTitle();
2786											data[counter][2] = ((AuctionArticle) actual)
2787													.getDescription();
2788											
2789											//if the minbiddingprice is higher than the currentmaxbid the minbidding price is shown
2790											//this should ONLY be the case if there is no bid yet. then the currentmaxbid is 0.00
2791											if( ((AuctionArticle) actual).getMinBiddingPrice() > ((AuctionArticle) actual).getCurrentMaxBid() ){
2792												data[counter][3] = ((AuctionArticle) actual).getMinBiddingPrice();
2793												
2794											//if the currentmaxbid is higher than the minbiddingprice show the currentmax bid	
2795											}else{
2796												data[counter][3] = ((AuctionArticle) actual)
2797												.getCurrentMaxBid();
2798											}
2799											
2800											data[counter][4] = dateDifferenceToString(((AuctionArticle) actual)
2801													.getAuctionEnd());
2802											if (((AuctionArticle) actual)
2803													.isSold()) {
2804												data[counter][5] = "sold"; //$NON-NLS-1$
2805											} else {
2806												data[counter][5] = "available"; //$NON-NLS-1$
2807											}
2808											counter++;
2809										}
2810									}
2811
2812									showMyArticlesTable = new JTable(data,
2813											columnNamesArticleListChangeArticle);
2814									showMyArticlesTable
2815											.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
2816									showMyArticlesTable
2817											.setAutoCreateRowSorter(true);
2818
2819									showMyArticlesTableScrollPane
2820											.setViewportView(showMyArticlesTable);
2821								}
2822							}
2823
2824							// /////////end copy paste code
2825
2826							// if the article isn't marked as sold let the user
2827							// know he cannot fool the application
2828						} else if (!editArticle.isSold()) {
2829							JOptionPane
2830									.showMessageDialog(
2831											null,
2832											Messages.getString("GUI.ArticleIsntSold"), //$NON-NLS-1$
2833											Messages.getString("GUI.ConnotUnsold"), //$NON-NLS-1$
2834											JOptionPane.WARNING_MESSAGE);
2835						}
2836					}
2837
2838				} else {
2839					JOptionPane.showMessageDialog(null,
2840							Messages.getString("GUI.PleaseSelect"), //$NON-NLS-1$
2841							Messages.getString("GUI.NoSelected3"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
2842				}
2843			}
2844		});
2845
2846		sellTabPanel.add(btnSetSelectedArticle, "14, 8"); //$NON-NLS-1$
2847
2848
2849		/**
2850		 * article description textarea for article insertion location: sell
2851		 * tab, left hand side
2852		 */
2853		articleDescriptionTextArea = new JTextArea(Messages.getString("GUI.ArticleDescription")); //$NON-NLS-1$
2854		articleDescriptionTextArea.setLineWrap(true);
2855
2856		/**
2857		 * scrollpane for article description textarea
2858		 */
2859		articleDescriptionTextAreaScrollPane = new JScrollPane();
2860		articleDescriptionTextAreaScrollPane
2861				.setViewportView(articleDescriptionTextArea);
2862		sellTabPanel.add(articleDescriptionTextAreaScrollPane,
2863				"2, 6, 1, 3, fill, fill"); //$NON-NLS-1$
2864
2865		/**
2866		 * combobox for category selection. used while inserting articles
2867		 * location: sell tab, left hand side
2868		 */
2869		categorySelectionComboBox = new JComboBox(updateCategoryData());
2870		sellTabPanel.add(categorySelectionComboBox, "2, 10, fill, default"); //$NON-NLS-1$
2871
2872		/**
2873		 * add category button. used while inserting articles. adds the selected
2874		 * category to the jlist containing all article categories location:
2875		 * sell tab, left hand side
2876		 */
2877		btnAddCategory = new JButton(Messages.getString("GUI.AddCategory1")); //$NON-NLS-1$
2878		btnAddCategory.addMouseListener(new MouseAdapter() {
2879			@Override
2880			public void mouseClicked(MouseEvent arg0) {
2881				// adds the selected category from the category selection
2882				// combobox at the end of the selected category list
2883				currentCategorySelectionListModel.add(
2884						currentCategorySelectionList.getModel().getSize(),
2885						categorySelectionComboBox.getSelectedItem());
2886			}
2887		});
2888		sellTabPanel.add(btnAddCategory, "4, 10"); //$NON-NLS-1$
2889
2890		/**
2891		 * text area displaying current description. used while editing article
2892		 * data. location: sell tab, right hand side
2893		 */
2894		txtrCurrentDescription = new JTextArea(Messages.getString("GUI.currentDescription")); //$NON-NLS-1$
2895		txtrCurrentDescription.setRows(3);
2896		txtrCurrentDescription.setEditable(false);
2897		txtrCurrentDescription.setLineWrap(true);
2898
2899		/**
2900		 * scroll pane for text area displaying current description. see above
2901		 * location: sell tab, right hand side
2902		 */
2903		txtrCurrentDescriptionScrollPane = new JScrollPane();
2904		txtrCurrentDescriptionScrollPane
2905				.setViewportView(txtrCurrentDescription);
2906		sellTabPanel.add(txtrCurrentDescriptionScrollPane,
2907
2908				"10, 10, 3, 1, fill, fill"); //$NON-NLS-1$
2909
2910
2911		/**
2912		 * text field for a adding an new category location: sell tab, left hand
2913		 * side
2914		 */
2915		txtNewCategory = new JTextField();
2916		txtNewCategory.setText(Messages.getString("GUI.NewCategory")); //$NON-NLS-1$
2917		sellTabPanel.add(txtNewCategory, "2, 12, fill, default"); //$NON-NLS-1$
2918		txtNewCategory.setColumns(10);
2919
2920		/**
2921		 * button to add a new category. adds category to jlist with all article
2922		 * categories. checks if the "new" category is really new and then adds
2923		 * it to the jlist. after that all comboboxes containing the
2924		 * categorylist are updated. location: sell tab, left hand side
2925		 */
2926		btnAddNewCategory = new JButton(Messages.getString("GUI.addNewCategory")); //$NON-NLS-1$
2927		btnAddNewCategory.addMouseListener(new MouseAdapter() {
2928			@Override
2929			public void mouseClicked(MouseEvent arg0) {
2930				boolean alreadyExistingCategory = false;
2931				// if category name doesn't contain a space character ->
2932				// continue
2933				if (checkForMalformedValues(txtNewCategory.getText(),
2934						"category")) { //$NON-NLS-1$
2935					// check if new category name already exists (if so it's in
2936					// the categoryselectioncombobox)
2937					for (int i = 0; i < categorySelectionComboBox
2938							.getItemCount(); i++) {
2939						if (categorySelectionComboBox.getItemAt(i).equals(
2940								txtNewCategory.getText())) {
2941							alreadyExistingCategory = true;
2942						}
2943					}
2944
2945					// category is new? then add it to the list
2946					if (!alreadyExistingCategory) {
2947						// adds the selected category from the new category
2948						// textfield at the end of the selected category list
2949						currentCategorySelectionListModel.add(
2950								currentCategorySelectionList.getModel()
2951										.getSize(), txtNewCategory.getText());
2952						
2953						//update category comboboxes with new category data
2954						categorySelectionComboBox.setModel(updateCategoryData());
2955						editArticleCategorySelectionComboBox.setModel(updateCategoryData());
2956
2957
2958						// category already exists? let the user know about that
2959					} else if (alreadyExistingCategory) {
2960						JOptionPane
2961								.showMessageDialog(
2962										null,
2963										Messages.getString("GUI.CategoryExistsPlease"), //$NON-NLS-1$
2964										Messages.getString("GUI.CategoryExistsAlreday"), //$NON-NLS-1$
2965										JOptionPane.WARNING_MESSAGE);
2966					}
2967				}
2968
2969			}
2970		});
2971		sellTabPanel.add(btnAddNewCategory, "4, 12"); //$NON-NLS-1$
2972
2973		/**
2974		 * text area to gather additional description text for article.
2975		 * location: sell tab, right hand side
2976		 */
2977		txtrAddToCurrentDescription = new JTextArea();
2978		txtrAddToCurrentDescription.setLineWrap(true);
2979		txtrAddToCurrentDescription.setText(Messages.getString("GUI.AddToCurrentDescrip")); //$NON-NLS-1$
2980
2981		/**
2982		 * scroll pane for txtrAddToCurrentDescription text area. location: sell
2983		 * tab, right hand side
2984		 */
2985		addToCurrentDescriptionScrollPane = new JScrollPane();
2986		addToCurrentDescriptionScrollPane
2987				.setViewportView(txtrAddToCurrentDescription);
2988		sellTabPanel.add(addToCurrentDescriptionScrollPane,
2989
2990				"10, 12, 3, 3, fill, fill"); //$NON-NLS-1$
2991
2992
2993		/**
2994		 * listmodel to alter currentCategorySelectionList data
2995		 * 
2996		 */
2997		currentCategorySelectionListModel = new DefaultListModel();
2998
2999		/**
3000		 * list containing all currently selected categories for new article
3001		 * location: sell tab, left hand side
3002		 */
3003		currentCategorySelectionList = new JList(
3004				currentCategorySelectionListModel);
3005		currentCategorySelectionList
3006				.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
3007		currentCategorySelectionList.setLayoutOrientation(JList.VERTICAL);
3008		currentCategorySelectionList.setVisibleRowCount(3);
3009
3010		/**
3011		 * scroll pane for currentCategorySelectionList location: sell tab, left
3012		 * hand side
3013		 */
3014		currentCategorySelectionListScrollPane = new JScrollPane();
3015		currentCategorySelectionListScrollPane
3016				.setViewportView(currentCategorySelectionList);
3017		sellTabPanel.add(currentCategorySelectionListScrollPane,
3018				"2, 14, 1, 3, fill, fill"); //$NON-NLS-1$
3019
3020		/**
3021		 * lable beside currentCategorySelectionList location: sell tab, left
3022		 * hand side
3023		 */
3024		lblSelectedCategories = new JLabel(Messages.getString("GUI.SelectedCategory1")); //$NON-NLS-1$
3025		sellTabPanel.add(lblSelectedCategories, "4, 14, 1, 2"); //$NON-NLS-1$
3026
3027		/**
3028		 * removes the selected category from the currentCategorySelectionList
3029		 * location: sell tab, left hand side
3030		 */
3031		btnRemoveSelectedCategory = new JButton(Messages.getString("GUI.removeCategory")); //$NON-NLS-1$
3032		btnRemoveSelectedCategory.addMouseListener(new MouseAdapter() {
3033			@Override
3034			public void mouseClicked(MouseEvent arg0) {
3035				int selectedIndex = currentCategorySelectionList
3036						.getSelectedIndex();
3037				if (selectedIndex != -1) {
3038					currentCategorySelectionListModel.remove(selectedIndex);
3039				}
3040			}
3041		});
3042		sellTabPanel.add(btnRemoveSelectedCategory, "4, 16"); //$NON-NLS-1$
3043
3044		/**
3045		 * adds the new description text from txtrAddToCurrentDescription to the
3046		 * already existing description text
3047		 */
3048		btnAddToDescription = new JButton(Messages.getString("GUI.AddToDescription")); //$NON-NLS-1$
3049		btnAddToDescription.addMouseListener(new MouseAdapter() {
3050			@Override
3051			public void mouseClicked(MouseEvent arg0) {
3052				// check because of possible transmission errors
3053				if (editArticle != null) {
3054
3055					execute("ADD DESCRIPTION " + editArticle.getArticleNo()
3056							+ " \"" + "\n"+txtrAddToCurrentDescription.getText()
3057							+ "\"");
3058
3059				}
3060			}
3061		});
3062
3063		sellTabPanel.add(btnAddToDescription, "12, 16");
3064
3065
3066		/**
3067		 * checkbox to indicate whether the phone number should be visible on
3068		 * article details location: sell tab, left hand side
3069		 */
3070		chckbxShowPhonenoOn = new JCheckBox(Messages.getString("GUI.ShowPhoneNo")); //$NON-NLS-1$
3071		sellTabPanel.add(chckbxShowPhonenoOn, "2, 18, 3, 1"); //$NON-NLS-1$
3072
3073		/**
3074		 * takes selected category from editArticleCategorySelectionComboBox and
3075		 * adds the category to the article. location: sell tab, right hand side
3076		 */
3077		editArticleAddCategoryButton = new JButton(Messages.getString("GUI.AddCategory8")); //$NON-NLS-1$
3078		editArticleAddCategoryButton.addMouseListener(new MouseAdapter() {
3079			@Override
3080			public void mouseClicked(MouseEvent arg0) {
3081				String newCategory = (String) editArticleCategorySelectionComboBox
3082						.getSelectedItem();
3083				// check because of possible transmission errors
3084				if (editArticle != null) {
3085					execute("ADD CATEGORY " + editArticle.getArticleNo() + " " //$NON-NLS-1$ //$NON-NLS-2$
3086							+ newCategory);
3087					currentArticleCategoriesListModel.add(
3088							currentArticleCategoriesListModel.size(),
3089							editArticleCategorySelectionComboBox
3090									.getSelectedItem());
3091				}
3092			}
3093		});
3094
3095		/**
3096		 * combobox showing all availible categories while editing article
3097		 * location: sell tab, right hand side
3098		 */
3099		editArticleCategorySelectionComboBox = new JComboBox(
3100				updateCategoryData());
3101		sellTabPanel.add(editArticleCategorySelectionComboBox,
3102
3103				"10, 18, fill, default");
3104		sellTabPanel.add(editArticleAddCategoryButton, "12, 18");
3105
3106
3107		/**
3108		 * checkbox to indicate whether the e-mail address should be visible on
3109		 * article details location: sell tab, left hand side
3110		 */
3111		chckbxShowEmailOn = new JCheckBox(Messages.getString("GUI.ShowEmailOn")); //$NON-NLS-1$
3112		sellTabPanel.add(chckbxShowEmailOn, "2, 20, 3, 1"); //$NON-NLS-1$
3113
3114		/**
3115		 * text field to add a new category to the article being edited
3116		 * location: sell tab, right hand side
3117		 */
3118		changeArticleDataNewCategoryTextField = new JTextField();
3119		changeArticleDataNewCategoryTextField.setText(Messages.getString("GUI.NewCategory8")); //$NON-NLS-1$
3120		changeArticleDataNewCategoryTextField.setColumns(10);
3121		sellTabPanel.add(changeArticleDataNewCategoryTextField,
3122
3123				"10, 20, fill, default");
3124
3125
3126		/**
3127		 * adds a new, formerly unknown, category to the article being edited.
3128		 * checks if the "new" category is really new. if so it adds it to the
3129		 * jlist with the article categories and executes "ADD CATEGORY".
3130		 * location: sell tab, right hand side
3131		 */
3132		changeArticleDataAddNewCategoryButton = new JButton(Messages.getString("GUI.AddNewCategory8")); //$NON-NLS-1$
3133		changeArticleDataAddNewCategoryButton
3134				.addMouseListener(new MouseAdapter() {
3135					@Override
3136					public void mouseClicked(MouseEvent arg0) {
3137						boolean alreadyExistingCategory = false;
3138						// if category name doesn't contain a space character ->
3139						// continue
3140						if (checkForMalformedValues(
3141								changeArticleDataNewCategoryTextField.getText(),
3142								"category")) { //$NON-NLS-1$
3143							// check if new category name already exists (if so
3144							// it's in the categoryselectioncombobox)
3145							for (int i = 0; i < editArticleCategorySelectionComboBox
3146									.getItemCount(); i++) {
3147								if (editArticleCategorySelectionComboBox
3148										.getItemAt(i).equals(
3149												changeArticleDataNewCategoryTextField
3150														.getText())) {
3151									alreadyExistingCategory = true;
3152								}
3153							}
3154				
3155							// category is new? then add it to the list
3156							if (!alreadyExistingCategory) {
3157								// adds the selected category from the new
3158								// category textfield at the end of the selected
3159								// category list
3160								currentArticleCategoriesListModel.add(
3161										currentArticleCategoriesList.getModel()
3162												.getSize(),
3163										changeArticleDataNewCategoryTextField
3164												.getText());
3165								// check because of possible transmission errors
3166								if (editArticle != null) {
3167									execute("ADD CATEGORY " //$NON-NLS-1$
3168											+ editArticle.getArticleNo()
3169											+ " " //$NON-NLS-1$
3170											+ changeArticleDataNewCategoryTextField
3171													.getText());
3172
3173									//update category comboboxes with new category data
3174									categorySelectionComboBox.setModel(updateCategoryData());
3175									editArticleCategorySelectionComboBox.setModel(updateCategoryData());									
3176								}
3177
3178								// category already exists? let the user know
3179								// about that
3180							} else if (alreadyExistingCategory) {
3181								JOptionPane
3182										.showMessageDialog(
3183												null,
3184												Messages.getString("GUI.CategoryAlreadyExistsPlease"), //$NON-NLS-1$
3185												Messages.getString("GUI.CategoryAlreadyExists"), //$NON-NLS-1$
3186												JOptionPane.WARNING_MESSAGE);
3187							}
3188						}
3189
3190					}
3191				});
3192
3193		sellTabPanel.add(changeArticleDataAddNewCategoryButton, "12, 20");
3194
3195
3196		/**
3197		 * default list model to be able to edit currentArticleCategoriesList
3198		 * data
3199		 */
3200		currentArticleCategoriesListModel = new DefaultListModel();
3201
3202		/**
3203		 * jlist containing all categories currently added to the article being
3204		 * edited location: sell tab, right hand side
3205		 */
3206		currentArticleCategoriesList = new JList(
3207				currentArticleCategoriesListModel);
3208		currentArticleCategoriesList
3209				.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
3210		currentArticleCategoriesList.setLayoutOrientation(JList.VERTICAL);
3211		currentArticleCategoriesList.setVisibleRowCount(3);
3212
3213		/**
3214		 * scroll pane for currentArticleCategoriesList location: sell tab,
3215		 * right hand side
3216		 */
3217		currentArticleCategoriesListScrollPane = new JScrollPane();
3218		currentArticleCategoriesListScrollPane
3219				.setViewportView(currentArticleCategoriesList);
3220		sellTabPanel.add(currentArticleCategoriesListScrollPane,
3221
3222				"10, 22, 1, 3, fill, fill");
3223
3224
3225		/**
3226		 * textfield containing the price of the article being inserted
3227		 * location: sell tab, left hand side
3228		 */
3229		txtPrice = new JTextField();
3230		txtPrice.setText(Messages.getString("GUI.Price9")); //$NON-NLS-1$
3231		sellTabPanel.add(txtPrice, "2, 22, fill, default"); //$NON-NLS-1$
3232
3233		/**
3234		 * label beside txtPrice. location: sell tab, left hand side
3235		 */
3236		lblMultiplesOf = new JLabel(Messages.getString("GUI.multiples")); //$NON-NLS-1$
3237		sellTabPanel.add(lblMultiplesOf, "4, 22"); //$NON-NLS-1$
3238
3239		changeArticleDataSelectedCategoriesLabel = new JLabel(
3240
3241				Messages.getString("GUI.selectedCategories6")); //$NON-NLS-1$
3242		sellTabPanel.add(changeArticleDataSelectedCategoriesLabel, "12, 22"); //$NON-NLS-1$
3243
3244
3245		/**
3246		 * textfield to enter a auction end date while inserting a new article
3247		 * location: sell tab, left hand side
3248		 */
3249		txtAuctionEndDate = new JTextField();
3250		txtAuctionEndDate.setText(Messages.getString("GUI.auctionEndDate")); //$NON-NLS-1$
3251		sellTabPanel.add(txtAuctionEndDate, "2, 24, fill, default"); //$NON-NLS-1$
3252		// standard selection is sales item => invisible
3253		txtAuctionEndDate.setVisible(false);
3254
3255		/**
3256		 * label indicating the format to be used when entering the auction end
3257		 * date in txtAuctionEndDate. sales item is the standard selection when
3258		 * inserting a new article. the label is invisible by default. location:
3259		 * sell tab, left hand side
3260		 */
3261		lblFormatYymmdd = new JLabel(Messages.getString("GUI.Format")); //$NON-NLS-1$
3262		sellTabPanel.add(lblFormatYymmdd, "4, 24, 3, 1"); //$NON-NLS-1$
3263		//standard selection is sales item => invisible
3264		
3265		lblFormatYymmdd.setVisible(false);
3266
3267		/**
3268		 * button to enter a new article into the system. checks for various
3269		 * malformations before inserting the article location: sell tab, left
3270		 * hand side
3271		 */
3272
3273		/**
3274		 * button to remove a category from the jlist containing all categories
3275		 * from the article being edited location: sell tab, right hand side
3276		 */
3277		changeArticleDataRemoveSelectedCategoryButton = new JButton(
3278				Messages.getString("GUI.RemoveCatego")); //$NON-NLS-1$
3279		changeArticleDataRemoveSelectedCategoryButton
3280				.addMouseListener(new MouseAdapter() {
3281					@Override
3282					public void mouseClicked(MouseEvent arg0) {
3283						if (currentArticleCategoriesList.getSelectedIndex() != -1) {
3284							// check because of possible transmission errors
3285							if (editArticle != null) {
3286								execute("DELETE CATEGORY " //$NON-NLS-1$
3287										+ editArticle.getArticleNo()
3288										+ " " //$NON-NLS-1$
3289										+ currentArticleCategoriesList
3290												.getSelectedValue());
3291								currentArticleCategoriesListModel
3292										.remove(currentArticleCategoriesList
3293												.getSelectedIndex());
3294							}
3295						}
3296					}
3297				});
3298		sellTabPanel.add(changeArticleDataRemoveSelectedCategoryButton,
3299
3300				"12, 24");
3301
3302
3303		/**
3304		 * textfield to change the price of a salesitem location: sell tab,
3305		 * right hand side
3306		 */
3307		btnInsertArticle = new JButton(Messages.getString("GUI.insertArticle")); //$NON-NLS-1$
3308		btnInsertArticle.addMouseListener(new MouseAdapter() {
3309			@Override
3310			public void mouseClicked(MouseEvent arg0) {
3311				// check for empty or default fields
3312				if (!txtArticleTitle.getText().isEmpty()
3313						&& !articleDescriptionTextArea.getText().isEmpty()
3314						&& !txtArticleTitle.getText().equals("Article title") //$NON-NLS-1$
3315						&& !articleDescriptionTextArea.getText().equals(
3316								"Article description")) { //$NON-NLS-1$
3317
3318					// check if price is properly formed (X.X, multiple of 0.5,
3319					// no letters, no empty field, no default "price" string)
3320					if (checkForMalformedValues(txtPrice.getText(), "price")) { //$NON-NLS-1$
3321
3322						// do you want to add a sales item?
3323						if (comboBox.getSelectedItem().equals(
3324								"Insert Sales Item")) { //$NON-NLS-1$
3325							execute("INSERT SALE \"" //$NON-NLS-1$
3326									+ txtArticleTitle.getText() + "\" " //$NON-NLS-1$
3327									+ txtPrice.getText());
3328							if (newSetArticleNo != -1) {
3329								execute("ADD DESCRIPTION " + newSetArticleNo //$NON-NLS-1$
3330										+ " \"" //$NON-NLS-1$
3331										+ articleDescriptionTextArea.getText()
3332										+ "\""); //$NON-NLS-1$
3333							}
3334
3335							// or do you want to add an auction article?
3336						} else if (comboBox.getSelectedItem().equals(
3337								"Insert Auction Article")) { //$NON-NLS-1$
3338							// is auction end in format YYMMDD-HHMMSS, not empty
3339							// and no just filled with default string?
3340							if (checkForMalformedValues(txtAuctionEndDate
3341									.getText(), "auctionend")) { //$NON-NLS-1$
3342								execute("INSERT AUCTION \"" //$NON-NLS-1$
3343										+ txtArticleTitle.getText() + "\" " //$NON-NLS-1$
3344										+ txtPrice.getText() + " " //$NON-NLS-1$
3345										+ txtAuctionEndDate.getText());
3346								if (newSetArticleNo != -1) {
3347									execute("ADD DESCRIPTION " //$NON-NLS-1$
3348											+ newSetArticleNo
3349											+ " \"" //$NON-NLS-1$
3350											+ articleDescriptionTextArea
3351													.getText() + "\""); //$NON-NLS-1$
3352								}
3353							}
3354						}
3355
3356						// if adding the article was successful, add the other
3357						// data
3358						if (newSetArticleNo != -1) {
3359							String[] categoriesToBeSet = new String[currentCategorySelectionListModel
3360									.size()];
3361							currentCategorySelectionListModel
3362									.copyInto(categoriesToBeSet);
3363							for (int i = 0; i < categoriesToBeSet.length; i++) {
3364								execute("ADD CATEGORY " + newSetArticleNo + " " //$NON-NLS-1$ //$NON-NLS-2$
3365										+ categoriesToBeSet[i]);
3366							}
3367
3368							if (chckbxShowPhonenoOn.isSelected()) {
3369								execute("SHOW PHONE " + newSetArticleNo //$NON-NLS-1$
3370										+ " TRUE"); //$NON-NLS-1$
3371							}
3372
3373							if (chckbxShowEmailOn.isSelected()) {
3374								execute("SHOW EMAIL " + newSetArticleNo //$NON-NLS-1$
3375										+ " TRUE"); //$NON-NLS-1$
3376							}
3377							
3378							JOptionPane.showMessageDialog(null,
3379									"Your Article was successfully inserted. It has the ArticleNo: "+newSetArticleNo,
3380									"Article successfully inserted", JOptionPane.WARNING_MESSAGE);
3381						}
3382						// reset the articleno value
3383						newSetArticleNo = -1;
3384						
3385						//TODO Maritjes translations. currently everything is reset to english.
3386						
3387						//reset the rest of the fields in the left half of the sell tab
3388						currentCategorySelectionListModel.removeAllElements();
3389						comboBox.setSelectedIndex(0);
3390						txtArticleTitle.setText("Article title");
3391						articleDescriptionTextArea.setText("Article description");
3392						txtNewCategory.setText("new Category");
3393						chckbxShowPhonenoOn.setSelected(false);
3394						chckbxShowEmailOn.setSelected(false);
3395						txtPrice.setText("price");
3396						txtAuctionEndDate.setText("auction end date");
3397
3398					}
3399					// if a field is empty, ask user to fill out all fields
3400				} else {
3401					JOptionPane.showMessageDialog(null,
3402							Messages.getString("GUI.PleaseFill"), //$NON-NLS-1$
3403							Messages.getString("GUI.MissingInfo"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
3404				}
3405			}
3406		});
3407		sellTabPanel.add(btnInsertArticle, "2, 26"); //$NON-NLS-1$
3408		changeArticleDataChangePriceTextField = new JTextField();
3409		changeArticleDataChangePriceTextField.setText(Messages.getString("GUI.Price0")); //$NON-NLS-1$
3410		sellTabPanel.add(changeArticleDataChangePriceTextField,
3411
3412				"10, 26, fill, default");
3413
3414
3415		/**
3416		 * takes the value from changeArticleDataChangePriceTextField, checks it
3417		 * for malformation and then sets the price to the new value. only works
3418		 * for sales items! location: sell tab, right hand side
3419		 */
3420		btnSetNewPrice = new JButton(Messages.getString("GUI.setNewPrice1")); //$NON-NLS-1$
3421		btnSetNewPrice.addMouseListener(new MouseAdapter() {
3422			@Override
3423			public void mouseClicked(MouseEvent arg0) {
3424				if (checkForMalformedValues(
3425						changeArticleDataChangePriceTextField.getText(),
3426						"price")) { //$NON-NLS-1$
3427					// check because of possible transmission errors
3428					if (editArticle != null) {
3429						execute("SET PRICE " //$NON-NLS-1$
3430								+ editArticle.getArticleNo()
3431								+ " " //$NON-NLS-1$
3432								+ changeArticleDataChangePriceTextField
3433										.getText());
3434					}
3435				}
3436			}
3437		});
3438
3439		sellTabPanel.add(btnSetNewPrice, "12, 26");
3440
3441
3442		/**
3443		 * messagetab
3444		 */
3445		messagePanel = new JPanel();
3446		tabbedPane.addTab(Messages.getString("GUI.Messages1"), null, messagePanel, null); //$NON-NLS-1$
3447		messagePanel.setLayout(new FormLayout(
3448				new ColumnSpec[] { FormFactory.RELATED_GAP_COLSPEC,
3449						FormFactory.DEFAULT_COLSPEC,
3450						FormFactory.RELATED_GAP_COLSPEC,
3451						FormFactory.DEFAULT_COLSPEC,
3452						FormFactory.RELATED_GAP_COLSPEC,
3453						FormFactory.DEFAULT_COLSPEC,
3454						FormFactory.RELATED_GAP_COLSPEC,
3455						ColumnSpec.decode("650px"), //$NON-NLS-1$
3456						FormFactory.RELATED_GAP_COLSPEC,
3457						FormFactory.DEFAULT_COLSPEC,
3458						FormFactory.RELATED_GAP_COLSPEC,
3459						FormFactory.DEFAULT_COLSPEC, }, new RowSpec[] {
3460						FormFactory.RELATED_GAP_ROWSPEC,
3461						FormFactory.DEFAULT_ROWSPEC,
3462						FormFactory.RELATED_GAP_ROWSPEC,
3463						FormFactory.DEFAULT_ROWSPEC,
3464						FormFactory.RELATED_GAP_ROWSPEC,
3465						FormFactory.DEFAULT_ROWSPEC,
3466						FormFactory.RELATED_GAP_ROWSPEC,
3467						FormFactory.DEFAULT_ROWSPEC, }));
3468
3469		/**
3470		 * gets all messages for the user from the server and shows them in a
3471		 * table
3472		 */
3473		btnShowMessages = new JButton(Messages.getString("GUI.showMessages1")); //$NON-NLS-1$
3474		btnShowMessages.addMouseListener(new MouseAdapter() {
3475			@Override
3476			public void mouseClicked(MouseEvent arg0) {
3477				execute("SHOW MESSAGES"); //$NON-NLS-1$
3478				String[] columnNamesMessagelist = { Messages.getString("GUI.SendDate"), //$NON-NLS-1$
3479						Messages.getString("GUI.Title0"), Messages.getString("GUI.MessageContent") }; //$NON-NLS-1$ //$NON-NLS-2$
3480
3481				Object[][] dataMessagelist = new Object[messageList.size()][columnNamesMessagelist.length];
3482
3483				// if messages exist, show them
3484				if (messageList.size() != 0) {
3485					int counter = 0;
3486					Iterator<Message> it = messageList.iterator();
3487					while (it.hasNext()) {
3488						Message actual = it.next();
3489						dataMessagelist[counter][0] = gregorianToString(actual
3490								.getSendDate(), "short"); //$NON-NLS-1$
3491						dataMessagelist[counter][1] = actual.getTitle();
3492						dataMessagelist[counter][2] = actual.getMsgText();
3493						counter++;
3494					}
3495				}
3496				messageTable = new JTable(new MyTableModel(columnNamesMessagelist, dataMessagelist));
3497				messageTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
3498				// senddate column
3499				messageTable.getColumnModel().getColumn(0).setPreferredWidth(
3500						125);
3501				// title column
3502				messageTable.getColumnModel().getColumn(1).setPreferredWidth(
3503						150);
3504				// message content column
3505				messageTable.getColumnModel().getColumn(2).setPreferredWidth(
3506						650);
3507				messageTable.setAutoCreateRowSorter(true);
3508				messageTableScrollPane.setViewportView(messageTable);
3509
3510			}
3511		});
3512		messagePanel.add(btnShowMessages, "2, 2"); //$NON-NLS-1$
3513
3514		/**
3515		 * sends the remove oldmessages command to the server and then updates
3516		 * the message table
3517		 */
3518		btnHideOldMessages = new JButton(Messages.getString("GUI.HideOldMsg")); //$NON-NLS-1$
3519		btnHideOldMessages.addMouseListener(new MouseAdapter() {
3520			@Override
3521			public void mouseClicked(MouseEvent arg0) {
3522				execute("REMOVE OLDMESSAGES"); //$NON-NLS-1$
3523				// buton.doClick() doesn't work because it's a mouseevent. so i
3524				// have to reuse the code
3525				execute("SHOW MESSAGES"); //$NON-NLS-1$
3526				String[] columnNamesMessagelist = { Messages.getString("GUI.SendDate()"), //$NON-NLS-1$
3527						Messages.getString("GUI.title0"), Messages.getString("GUI.messageConent") }; //$NON-NLS-1$ //$NON-NLS-2$
3528
3529				Object[][] dataMessagelist = new Object[messageList.size()][columnNamesMessagelist.length];
3530
3531				// if messages exist, show them
3532				if (messageList.size() != 0) {
3533					int counter = 0;
3534					Iterator<Message> it = messageList.iterator();
3535					while (it.hasNext()) {
3536						Message actual = it.next();
3537						dataMessagelist[counter][0] = gregorianToString(actual
3538								.getSendDate(), "short"); //$NON-NLS-1$
3539						dataMessagelist[counter][1] = actual.getTitle();
3540						dataMessagelist[counter][2] = actual.getMsgText();
3541						counter++;
3542					}
3543				}
3544				messageTable = new JTable(new MyTableModel(columnNamesMessagelist, dataMessagelist));
3545				messageTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
3546				// senddate column
3547				messageTable.getColumnModel().getColumn(0).setPreferredWidth(
3548						125);
3549				// title column
3550				messageTable.getColumnModel().getColumn(1).setPreferredWidth(
3551						150);
3552				// message content column
3553				messageTable.getColumnModel().getColumn(2).setPreferredWidth(
3554						650);
3555				messageTable.setAutoCreateRowSorter(true);
3556				messageTableScrollPane.setViewportView(messageTable);
3557
3558			}
3559		});
3560		messagePanel.add(btnHideOldMessages, "4, 2"); //$NON-NLS-1$
3561
3562		messageTableScrollPane = new JScrollPane();
3563		messagePanel.add(messageTableScrollPane, "2, 4, 7, 1, fill, fill"); //$NON-NLS-1$
3564
3565		messageTable = new JTable();
3566		String[] columnNamesMessagelist = {"Send date (YY.MM.DD)", "Title", "Message content"};
3567		messageTable.setModel(new MyTableModel(columnNamesMessagelist, new Object[0][0]));
3568		messageTableScrollPane.setViewportView(messageTable);
3569
3570		/**
3571		 * user control tab
3572		 */
3573		userControlCenterPanel = new JPanel();
3574		tabbedPane.addTab(Messages.getString("GUI.UCC3"), null, userControlCenterPanel, //$NON-NLS-1$
3575				null);
3576		userControlCenterPanel.setLayout(new FormLayout(new ColumnSpec[] {
3577				FormFactory.RELATED_GAP_COLSPEC,
3578				FormFactory.DEFAULT_COLSPEC,
3579				FormFactory.RELATED_GAP_COLSPEC,
3580				ColumnSpec.decode("max(40dlu;default)"), //$NON-NLS-1$
3581				FormFactory.RELATED_GAP_COLSPEC,
3582				ColumnSpec.decode("left:max(87dlu;default)"), //$NON-NLS-1$
3583				ColumnSpec.decode("max(33dlu;default)"), //$NON-NLS-1$
3584				FormFactory.RELATED_GAP_COLSPEC,
3585
3586				ColumnSpec.decode("max(100dlu;pref)"),
3587				FormFactory.RELATED_GAP_COLSPEC,
3588				FormFactory.DEFAULT_COLSPEC,
3589				FormFactory.RELATED_GAP_COLSPEC,
3590
3591
3592				ColumnSpec.decode("20px"),
3593
3594				FormFactory.RELATED_GAP_COLSPEC,
3595				ColumnSpec.decode("max(113dlu;default)"), //$NON-NLS-1$
3596				FormFactory.RELATED_GAP_COLSPEC,
3597
3598				ColumnSpec.decode("100px"),
3599				FormFactory.RELATED_GAP_COLSPEC,
3600				ColumnSpec.decode("max(34dlu;default)"),},
3601			new RowSpec[] {
3602				FormFactory.RELATED_GAP_ROWSPEC,
3603				FormFactory.DEFAULT_ROWSPEC,
3604				FormFactory.RELATED_GAP_ROWSPEC,
3605				FormFactory.DEFAULT_ROWSPEC,
3606
3607				FormFactory.RELATED_GAP_ROWSPEC,
3608
3609				FormFactory.DEFAULT_ROWSPEC,
3610				FormFactory.RELATED_GAP_ROWSPEC,
3611				RowSpec.decode("default:grow"),}));
3612
3613
3614		/**
3615		 * label in user data change panel location: user control center tab,
3616		 * upper window area
3617		 */
3618		lblChange = new JLabel(Messages.getString("GUI.Change0")); //$NON-NLS-1$
3619		userControlCenterPanel.add(lblChange, "4, 4, right, default"); //$NON-NLS-1$
3620
3621		/**
3622		 * values that can be changed for combobox
3623		 */
3624		
3625
3626		/**
3627		 * combobox containing all values that can be changed by the user
3628		 * location: user control center tab, upper window area
3629		 */
3630		comboBoxChangeUserdata = new JComboBox(LanguagePack.possibleChangeValues());
3631		comboBoxChangeUserdata.addActionListener(new ActionListener() {
3632			public void actionPerformed(ActionEvent arg0) {
3633				changeSuccessLabel.setText("");
3634			}
3635		});
3636		userControlCenterPanel.add(comboBoxChangeUserdata,
3637				"6, 4, fill, default"); //$NON-NLS-1$
3638
3639		/**
3640		 * label in user data change panel location: user control center tab,
3641		 * upper window area
3642		 */
3643		lblTo = new JLabel(Messages.getString("GUI.to")); //$NON-NLS-1$
3644		userControlCenterPanel.add(lblTo, "7, 4, center, default"); //$NON-NLS-1$
3645
3646		/**
3647		 * textfield containing the new value for the value to be changed
3648		 * location: user control center tab, upper window area
3649		 */
3650		txtChangeNewValue = new JTextField();
3651		userControlCenterPanel.add(txtChangeNewValue, "9, 4, fill, default"); //$NON-NLS-1$
3652
3653		/**
3654		 * button to execute change in user data. various checks are performed
3655		 * before changing the value location: user control center tab, upper
3656		 * window area
3657		 */
3658		btnChangeOk = new JButton(Messages.getString("GUI.ok")); //$NON-NLS-1$
3659		btnChangeOk.addMouseListener(new MouseAdapter() {
3660			@Override
3661			public void mouseClicked(MouseEvent arg0) {
3662				// password change
3663				if (comboBoxChangeUserdata.getSelectedItem().equals("password")) { //$NON-NLS-1$
3664					if (checkForMalformedValues(txtChangeNewValue.getText(),
3665							"password")) { //$NON-NLS-1$
3666						execute("CHANGE USER " + usernameTempSaved //$NON-NLS-1$
3667								+ " PASSWORD " + txtChangeNewValue.getText()); //$NON-NLS-1$
3668					}
3669					// last name change
3670				} else if (comboBoxChangeUserdata.getSelectedItem().equals(
3671						"last name")) { //$NON-NLS-1$
3672					execute("CHANGE USER " + usernameTempSaved + " LASTNAME \"" //$NON-NLS-1$ //$NON-NLS-2$
3673							+ txtChangeNewValue.getText() + "\""); //$NON-NLS-1$
3674					// first name change
3675				} else if (comboBoxChangeUserdata.getSelectedItem().equals(
3676						"first name")) { //$NON-NLS-1$
3677					execute("CHANGE USER " + usernameTempSaved //$NON-NLS-1$
3678							+ " FIRSTNAME \"" + txtChangeNewValue.getText() //$NON-NLS-1$
3679							+ "\""); //$NON-NLS-1$
3680					// dateofbirth change
3681				} else if (comboBoxChangeUserdata.getSelectedItem().equals(
3682						"birthday")) { //$NON-NLS-1$
3683					if (checkForMalformedValues(txtChangeNewValue.getText(),
3684							"dateofbirth")) { //$NON-NLS-1$
3685						execute("CHANGE USER " + usernameTempSaved //$NON-NLS-1$
3686								+ " BIRTHDAY " + txtChangeNewValue.getText()); //$NON-NLS-1$
3687					}
3688					// street change
3689				} else if (comboBoxChangeUserdata.getSelectedItem().equals(
3690						"street")) { //$NON-NLS-1$
3691					execute("CHANGE USER " + usernameTempSaved + " STREET \"" //$NON-NLS-1$ //$NON-NLS-2$
3692							+ txtChangeNewValue.getText() + "\""); //$NON-NLS-1$
3693					// zip change
3694				} else if (comboBoxChangeUserdata.getSelectedItem().equals(
3695						"zip")) { //$NON-NLS-1$
3696					if (checkForMalformedValues(txtChangeNewValue.getText(),
3697							"zip")) { //$NON-NLS-1$
3698						execute("CHANGE USER " + usernameTempSaved + " ZIP " //$NON-NLS-1$ //$NON-NLS-2$
3699								+ txtChangeNewValue.getText());
3700					}
3701					// location change
3702				} else if (comboBoxChangeUserdata.getSelectedItem().equals(
3703						"location")) { //$NON-NLS-1$
3704					execute("CHANGE USER " + usernameTempSaved + " CITY \"" //$NON-NLS-1$ //$NON-NLS-2$
3705							+ txtChangeNewValue.getText() + "\""); //$NON-NLS-1$
3706					// phone change
3707				} else if (comboBoxChangeUserdata.getSelectedItem().equals(
3708						"phone")) { //$NON-NLS-1$
3709					if (checkForMalformedValues(txtChangeNewValue.getText(),
3710							"phoneno")) { //$NON-NLS-1$
3711						execute("CHANGE USER " + usernameTempSaved + " PHONE " //$NON-NLS-1$ //$NON-NLS-2$
3712								+ txtChangeNewValue.getText());
3713					}
3714					// email change
3715					// TODO deutsche Begriffe
3716				} else if (comboBoxChangeUserdata.getSelectedItem().equals(
3717						"e-mail")) { //$NON-NLS-1$
3718					if (checkForMalformedValues(txtChangeNewValue.getText(),
3719							"email")) { //$NON-NLS-1$
3720						execute("CHANGE USER " + usernameTempSaved + " EMAIL " //$NON-NLS-1$ //$NON-NLS-2$
3721								+ txtChangeNewValue.getText());
3722					}
3723				}
3724				// change user was successful
3725				if (changeBool) {
3726					changeSuccessLabel.setText("Value successfully changed!"); //$NON-NLS-1$
3727					// reset changeBool
3728					changeBool = false;
3729				}
3730			}
3731		});
3732		userControlCenterPanel.add(btnChangeOk, "11, 4"); //$NON-NLS-1$
3733
3734		/**
3735		 * empty label to get some space between btnChangeOk and
3736		 * changeSuccessLabel location: user control center tab, upper window
3737		 * area
3738		 */
3739		changeUserLabel = new JLabel(""); //$NON-NLS-1$
3740		userControlCenterPanel.add(changeUserLabel, "13, 4"); //$NON-NLS-1$
3741
3742		/**
3743		 * label indicating when user data change was successful location: user
3744		 * control center tab, upper window area
3745		 */
3746		changeSuccessLabel = new JLabel(""); //$NON-NLS-1$
3747		userControlCenterPanel.add(changeSuccessLabel, "15, 4"); //$NON-NLS-1$
3748
3749		/**
3750		 * panel with admin functions location: user control center tab, under
3751		 * change value area
3752		 */
3753		adminPanel = new JPanel();
3754		// adminpanel is invisible by default
3755		adminPanel.setVisible(false);
3756		userControlCenterPanel.add(adminPanel, "4, 8, 14, 1, left, fill"); //$NON-NLS-1$
3757		adminPanel.setLayout(new BorderLayout(0, 0));
3758
3759		/**
3760		 * panel on adminPanel containing all the elements
3761		 */
3762		adminControlsPanel = new JPanel();
3763		adminPanel.add(adminControlsPanel, BorderLayout.NORTH);
3764
3765		/**
3766		 * textfield containing the username of the user to be edited. location:
3767		 * user control center tab, under change value area
3768		 */
3769		txtUsernameToEdit = new JTextField();
3770		txtUsernameToEdit.setText(Messages.getString("GUI.UserToEdit")); //$NON-NLS-1$
3771		adminControlsPanel.add(txtUsernameToEdit);
3772
3773		/**
3774		 * button that deletes the user entered in txtUsernameToEdit. before
3775		 * deleting a check is performed whether the user still has articles
3776		 * entered into the system. if so the admin has to confirm if the user
3777		 * should be deleted anyways location: user control center tab, under
3778		 * change value area
3779		 */
3780		btnDelete = new JButton(Messages.getString("GUI.Delete0")); //$NON-NLS-1$
3781		btnDelete.addMouseListener(new MouseAdapter() {
3782			@Override
3783			public void mouseClicked(MouseEvent arg0) {
3784				String userToBeDeleted = txtUsernameToEdit.getText();
3785				// request articles by user to be deleted to see if he still has
3786				// listed articles
3787				execute("LIST USER " + userToBeDeleted); //$NON-NLS-1$
3788				// check is username is malformed
3789				if (checkForMalformedValues(userToBeDeleted, "username")) { //$NON-NLS-1$
3790					// are articles by user to be deleted in the system?
3791					// no. delete him right away
3792					if (articleList.size() == 0) {
3793						execute("DELETE USER " + userToBeDeleted); //$NON-NLS-1$
3794
3795						// yes. check back with admin
3796					} else {
3797						Object[] options = { Messages.getString("GUI.YesDelete") + userToBeDeleted, //$NON-NLS-1$
3798								Messages.getString("GUI.NoDeleteHim") }; //$NON-NLS-1$
3799						int n = JOptionPane
3800								.showOptionDialog(
3801										frame,
3802										Messages.getString("GUI.DoYoureallyDelte") //$NON-NLS-1$
3803												+ userToBeDeleted
3804												+ Messages.getString("GUI.evenThoughHeStill"), //$NON-NLS-1$
3805										Messages.getString("GUI.DeletionWarning"), //$NON-NLS-1$
3806										JOptionPane.YES_NO_CANCEL_OPTION,
3807										JOptionPane.QUESTION_MESSAGE, null,
3808										options, options[1]);
3809						if (n == 0) {
3810							execute("DELETE USER " + userToBeDeleted); //$NON-NLS-1$
3811						}
3812					}
3813				}
3814			}
3815		});
3816		adminControlsPanel.add(btnDelete);
3817
3818		/**
3819		 * locks the username entered in txtUsernameToEdit location: user
3820		 * control center tab, under change value area
3821		 */
3822		btnLock = new JButton(Messages.getString("GUI.Lock")); //$NON-NLS-1$
3823		btnLock.addMouseListener(new MouseAdapter() {
3824			@Override
3825			public void mouseClicked(MouseEvent arg0) {
3826				String userToBeLocked = txtUsernameToEdit.getText();
3827				// check if username is malformed
3828				if (checkForMalformedValues(userToBeLocked, "username")) { //$NON-NLS-1$
3829					execute("LOCK USER " + userToBeLocked); //$NON-NLS-1$
3830					// user was successfully locked
3831					if (lockBool) {
3832						JOptionPane.showMessageDialog(null, Messages.getString("GUI.user0") //$NON-NLS-1$
3833								+ userToBeLocked + Messages.getString("GUI.successfullyLocked"), //$NON-NLS-1$
3834								Messages.getString("GUI.UsersuccessfullyLocked"), //$NON-NLS-1$
3835								JOptionPane.WARNING_MESSAGE);
3836
3837						// user was not successfully locked. user doesn't exist
3838						// etc.
3839					} else if (!lockBool) {
3840						JOptionPane
3841								.showMessageDialog(null, Messages.getString("GUI.User01") //$NON-NLS-1$
3842										+ userToBeLocked
3843										+ Messages.getString("GUI.coudntLock"), //$NON-NLS-1$
3844										Messages.getString("GUI.UserFailed"), //$NON-NLS-1$
3845										JOptionPane.WARNING_MESSAGE);
3846					}
3847				}
3848			}
3849		});
3850		adminControlsPanel.add(btnLock);
3851
3852		/**
3853		 * unlocks the username entered in txtUsernameToEdit location: user
3854		 * control center tab, under change value area
3855		 */
3856		btnUnlock = new JButton(Messages.getString("GUI.Unlock")); //$NON-NLS-1$
3857		btnUnlock.addMouseListener(new MouseAdapter() {
3858			@Override
3859			public void mouseClicked(MouseEvent arg0) {
3860				String userToBeUnlocked = txtUsernameToEdit.getText();
3861				// check if username is malformed
3862				if (checkForMalformedValues(userToBeUnlocked, "username")) { //$NON-NLS-1$
3863					execute("UNLOCK USER " + userToBeUnlocked); //$NON-NLS-1$
3864					// user was successfully unlocked
3865					if (unlockBool) {
3866						JOptionPane.showMessageDialog(null, Messages.getString("GUI.User02") //$NON-NLS-1$
3867								+ userToBeUnlocked + Messages.getString("GUI.successfullyUnlocked"), //$NON-NLS-1$
3868								Messages.getString("GUI.UsersuccessfullyUnlocked"), //$NON-NLS-1$
3869								JOptionPane.WARNING_MESSAGE);
3870
3871						// user was not successfully unlocked. user doesn't
3872						// exist etc.
3873					} else if (!unlockBool) {
3874						JOptionPane
3875								.showMessageDialog(
3876										null,
3877										Messages.getString("GUI.User03") //$NON-NLS-1$
3878												+ userToBeUnlocked
3879												+ Messages.getString("GUI.NotBeUnlocked"), //$NON-NLS-1$
3880										Messages.getString("GUI.UnlockedUser"), //$NON-NLS-1$
3881										JOptionPane.WARNING_MESSAGE);
3882					}
3883				}
3884
3885			}
3886		});
3887		adminControlsPanel.add(btnUnlock);
3888
3889		/**
3890		 * lists all users location: user control center tab, under change value
3891		 * area
3892		 */
3893		btnShowUsers = new JButton(Messages.getString("GUI.ShowUsers0")); //$NON-NLS-1$
3894		btnShowUsers.addMouseListener(new MouseAdapter() {
3895			@Override
3896			public void mouseClicked(MouseEvent arg0) {
3897
3898				String[] columnNamesUserlist = { Messages.getString("GUI.LastName0"), Messages.getString("GUI.FirstName0"), //$NON-NLS-1$ //$NON-NLS-2$
3899						Messages.getString("GUI.Username04"), Messages.getString("GUI.Locked0"), Messages.getString("GUI.DateOfBirth0"), Messages.getString("GUI.Street0"), Messages.getString("GUI.Zip0"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
3900						Messages.getString("GUI.Location0"), Messages.getString("GUI.PhoneNo0"), Messages.getString("GUI.email0") }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
3901
3902				execute("SHOW USERS"); //$NON-NLS-1$
3903				Object[][] dataUserlist = new Object[userList.size()][10];
3904
3905				if (userList.size() != 0) {
3906					// counter to prevent running out of array bounds
3907					int counter = 0;
3908					Iterator<User> it = userList.iterator();
3909					// add one after another. list already sorted by last name
3910					// and first name on serverside
3911					while (it.hasNext()) {
3912						User actual = it.next();
3913						dataUserlist[counter][0] = actual.getLastName();
3914						dataUserlist[counter][1] = actual.getFirstName();
3915						dataUserlist[counter][2] = actual.getUsername();
3916						dataUserlist[counter][3] = actual.isLocked();
3917						dataUserlist[counter][4] = gregorianToString(actual
3918								.getDateOfBirth(), "short"); //$NON-NLS-1$
3919						dataUserlist[counter][5] = actual.getStreet();
3920						dataUserlist[counter][6] = actual.getZip();
3921						dataUserlist[counter][7] = actual.getLocation();
3922						dataUserlist[counter][8] = actual.getPhoneNo();
3923						dataUserlist[counter][9] = actual.getEmail();
3924						counter++;
3925					}
3926				}
3927				/**
3928				 * table containing all the user data
3929				 */
3930				adminArticleTable = new JTable(dataUserlist,
3931						columnNamesUserlist);
3932				adminArticleTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
3933				adminArticleTable.setAutoCreateRowSorter(true);
3934				adminArticleTableScrollPane.setViewportView(adminArticleTable);
3935			}
3936		});
3937		adminControlsPanel.add(btnShowUsers);
3938
3939		/**
3940		 * shows all messages entered in the system
3941		 */
3942		btnShowAllMessages = new JButton(Messages.getString("GUI.ShowAllMsgs0")); //$NON-NLS-1$
3943		btnShowAllMessages.addMouseListener(new MouseAdapter() {
3944			@Override
3945			public void mouseClicked(MouseEvent arg0) {
3946				execute("SHOW MESSAGES"); //$NON-NLS-1$
3947				String[] columnNamesMessagelist = { Messages.getString("GUI.to0"), Messages.getString("GUI.sendDate0"), Messages.getString("GUI.Title0"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
3948						Messages.getString("GUI.MessageContent") }; //$NON-NLS-1$
3949
3950				Object[][] dataMessagelist = new Object[messageList.size()][columnNamesMessagelist.length];
3951
3952				// if messages exist, show them
3953				if (messageList.size() != 0) {
3954					int counter = 0;
3955					Iterator<Message> it = messageList.iterator();
3956					while (it.hasNext()) {
3957						Message actual = it.next();
3958						dataMessagelist[counter][0] = actual.getReceiver()
3959								.getUsername();
3960						dataMessagelist[counter][1] = gregorianToString(actual
3961								.getSendDate(), "short"); //$NON-NLS-1$
3962						dataMessagelist[counter][2] = actual.getTitle();
3963						dataMessagelist[counter][3] = actual.getMsgText();
3964						counter++;
3965					}
3966				}
3967				/**
3968				 * table containing all the messages
3969				 */
3970				adminArticleTable = new JTable(dataMessagelist,
3971						columnNamesMessagelist);
3972				adminArticleTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
3973				adminArticleTable.setAutoCreateRowSorter(true);
3974				adminArticleTableScrollPane.setViewportView(adminArticleTable);
3975			}
3976		});
3977		adminControlsPanel.add(btnShowAllMessages);
3978
3979		/**
3980		 * shows all the articles entered by the user entered in
3981		 * txtUsernameToEdit
3982		 */
3983		btnShowArticles = new JButton(Messages.getString("GUI.showArticlesByUser")); //$NON-NLS-1$
3984		btnShowArticles.addMouseListener(new MouseAdapter() {
3985			@Override
3986			public void mouseClicked(MouseEvent arg0) {
3987				String[] columnNamesArticleListAdmin = { Messages.getString("GUI.ArticleNo0"), Messages.getString("GUI.Title01"), //$NON-NLS-1$ //$NON-NLS-2$
3988						Messages.getString("GUI.decription0"), Messages.getString("GUI.currentPrice01"), Messages.getString("GUI.TimeLeft01"), //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
3989						Messages.getString("GUI.VendorName") }; //$NON-NLS-1$
3990
3991				String articlesByUser = txtUsernameToEdit.getText();
3992				if (checkForMalformedValues(articlesByUser, Messages.getString("GUI.UserName0"))) { //$NON-NLS-1$
3993					execute("LIST USER " + articlesByUser); //$NON-NLS-1$
3994					Object[][] data = new Object[articleList.size()][6];
3995					if (articleList.size() != 0) {
3996						// counter to prevent running out of array bounds
3997						int counter = 0;
3998						// first the salesitems
3999						Iterator<Article> it = articleList.iterator();
4000						while (it.hasNext()) {
4001							Object actual = it.next();
4002
4003							if (actual.getClass().getSimpleName().equals(
4004									"SalesItem")) { //$NON-NLS-1$
4005								data[counter][0] = ((SalesItem) actual)
4006										.getArticleNo();
4007								data[counter][1] = ((SalesItem) actual)
4008										.getTitle();
4009								data[counter][2] = ((SalesItem) actual)
4010										.getDescription();
4011								data[counter][3] = ((SalesItem) actual)
4012										.getPrice();
4013								data[counter][4] = ""; //$NON-NLS-1$
4014								data[counter][5] = ((SalesItem) actual)
4015										.getVendor();
4016								counter++;
4017							}
4018						}
4019
4020						// then the auction items
4021						Iterator<Article> it2 = articleList.iterator();
4022						while (it2.hasNext()) {
4023							Object actual = it2.next();
4024
4025							if (actual.getClass().getSimpleName().equals(
4026									"AuctionArticle")) { //$NON-NLS-1$
4027								data[counter][0] = ((AuctionArticle) actual)
4028										.getArticleNo();
4029								data[counter][1] = ((AuctionArticle) actual)
4030										.getTitle();
4031								data[counter][2] = ((AuctionArticle) actual)
4032										.getDescription();
4033								
4034								//if the minbiddingprice is higher than the currentmaxbid the minbidding price is shown
4035								//this should ONLY be the case if there is no bid yet. then the currentmaxbid is 0.00
4036								if( ((AuctionArticle) actual).getMinBiddingPrice() > ((AuctionArticle) actual).getCurrentMaxBid() ){
4037									data[counter][3] = ((AuctionArticle) actual).getMinBiddingPrice();
4038									
4039								//if the currentmaxbid is higher than the minbiddingprice show the currentmax bid	
4040								}else{
4041									data[counter][3] = ((AuctionArticle) actual)
4042									.getCurrentMaxBid();
4043								}
4044								
4045								data[counter][4] = dateDifferenceToString(((AuctionArticle) actual)
4046										.getAuctionEnd());
4047								data[counter][5] = ((AuctionArticle) actual)
4048										.getVendor();
4049								counter++;
4050							}
4051						}
4052						/**
4053						 * table containing all the article data
4054						 */
4055						adminArticleTable = new JTable(data,
4056								columnNamesArticleListAdmin);
4057						adminArticleTable
4058								.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
4059						adminArticleTable.setAutoCreateRowSorter(true);
4060						adminArticleTableScrollPane
4061								.setViewportView(adminArticleTable);
4062					}
4063				}
4064			}
4065		});
4066		adminControlsPanel.add(btnShowArticles);
4067
4068		/**
4069		 * east side of admincontrolpanel
4070		 */
4071		adminControlsPanel2 = new JPanel();
4072		adminPanel.add(adminControlsPanel2, BorderLayout.EAST);
4073
4074		/**
4075		 * deletes the article selected from the article table
4076		 */
4077		btnDeleteArticle = new JButton(Messages.getString("GUI.DeleteSelectedArticle")); //$NON-NLS-1$
4078		btnDeleteArticle.addMouseListener(new MouseAdapter() {
4079			@Override
4080			public void mouseClicked(MouseEvent arg0) {
4081				// hardcoded column 0 because articleNo is always in column 0
4082				int articleNoToBeDeleted = (Integer) adminArticleTable
4083						.getValueAt(adminArticleTable.getSelectedRow(), 0);
4084
4085				execute("DELETE ARTICLE " + articleNoToBeDeleted); //$NON-NLS-1$
4086
4087				if (deleteArticleBool) {
4088					JOptionPane.showMessageDialog(null, Messages.getString("GUI.Article04") //$NON-NLS-1$
4089							+ articleNoToBeDeleted + Messages.getString("GUI.successfullyDeleted"), //$NON-NLS-1$
4090							Messages.getString("GUI.ArticleDelte01"), JOptionPane.WARNING_MESSAGE); //$NON-NLS-1$
4091
4092				} else if (!deleteArticleBool) {
4093					JOptionPane.showMessageDialog(null, Messages.getString("GUI.Article711") //$NON-NLS-1$
4094							+ articleNoToBeDeleted + Messages.getString("GUI.CouldntDeleted712"), //$NON-NLS-1$
4095							Messages.getString("GUI.ArticleFailed713"), //$NON-NLS-1$
4096							JOptionPane.WARNING_MESSAGE);
4097				}
4098
4099			}
4100		});
4101		adminControlsPanel2.add(btnDeleteArticle);
4102
4103		/**
4104		 * scroll panel for adminArticleTable
4105		 */
4106		adminArticleTableScrollPane = new JScrollPane();
4107		adminPanel.add(adminArticleTableScrollPane, BorderLayout.CENTER);
4108
4109		// remove sell tab
4110		tabbedPane.removeTabAt(1);
4111		// remove message tab
4112		tabbedPane.removeTabAt(1);
4113		// remove usercontrolcenter tab
4114		tabbedPane.removeTabAt(1);
4115		// hide article details in buy tab until a user logs in
4116		articleDetailsPanel.setVisible(false);
4117		btnShowArticleDetails.setVisible(false);
4118	}
4119}