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1
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2 package nabble.view.web.tools;
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3
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4 import nabble.view.web.user.OnlineStatus;
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5
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6 import javax.servlet.ServletException;
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7 import javax.servlet.http.HttpServlet;
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8 import javax.servlet.http.HttpServletRequest;
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9 import javax.servlet.http.HttpServletResponse;
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10 import java.io.IOException;
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11 import java.io.PrintWriter;
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12 import java.util.ArrayList;
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13 import java.util.Collections;
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14 import java.util.Comparator;
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15 import java.util.Map;
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16
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17
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18 public final class OnlineUsers extends HttpServlet {
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19
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20 private static class Entry {
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21 String url;
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22 int count;
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23 Entry(String url, int count) {
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24 this.url = url;
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25 this.count = count;
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26 }
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27 }
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28
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29 protected void service(HttpServletRequest request,HttpServletResponse response)
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30 throws ServletException, IOException
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31 {
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32 Map<String, Integer> sites = OnlineStatus.getOnlineSites();
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33 ArrayList<Entry> list = new ArrayList<Entry>(sites.size());
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34 for (Map.Entry<String, Integer> entry : sites.entrySet()) {
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35 list.add(new Entry(entry.getKey(), entry.getValue()));
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36 }
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37
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38 Collections.sort(list, new Comparator<Entry>() {
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39 public int compare(Entry o1, Entry o2) {
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40 return o1.count == o2.count? 0 : o1.count > o2.count? -1 : 1;
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41 }
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42 });
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43
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44 PrintWriter out = response.getWriter();
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45
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46 out.print( "\n<html>\n <head>\n <title>Online Users</title>\n <style type=\"text/css\">\n body {\n font-family:Verdana, Arial, Serif;\n font-size:.74em;\n }\n table td{padding:.4em .8em;border-bottom:1px solid #eee}\n </style>\n </head>\n <body>\n <div>\n <a href=\"/tools/\">Tools</a>\n </div>\n <h1>Online Users</h1>\n\n <table>\n " );
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47 for (Entry entry : list) {
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48 out.print( "\n <tr><td><a href=\"" );
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49 out.print( (entry.url) );
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50 out.print( "\">" );
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51 out.print( (entry.url) );
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52 out.print( "</a></td><td>" );
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53 out.print( (entry.count) );
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54 out.print( "</td></tr>\n " );
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55 }
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56 out.print( "\n </table>\n </body>\n</html>\n" );
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57
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58 }
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59
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60 }
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61
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