// Textbook fragment 06.22
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.net.*;
import java.util.Random;
/** Example program for the FavoriteList and FavoriteListMTF classes */
public class FavoriteTester {
  public static void main(String[] args) {
    String[] urlArray = {"http://wiley.com", "http://datastructures.net",
                    "http://algorithmdesign.net", "http://www.brown.edu",
                    "http://uci.edu" };
    FavoriteList<String> L1 = new FavoriteList<String>();
    FavoriteListMTF<String> L2 = new FavoriteListMTF<String>();
    int n = 20; // number of access operations
    // Simulation scenario: access n times a random URL
    Random rand = new Random();
    for (int k = 0; k < n; k++) {
      System.out.println("-------------------------------------------");
      int i = rand.nextInt(urlArray.length);    // random index
      String url = urlArray[i];                 // random URL
      System.out.println("Accessing: " + url);
      L1.access(url);
      System.out.println("L1 = " + L1);
      L2.access(url);
      System.out.println("L2 = " + L2);
    }
    int t = L1.size()/2;
    System.out.println("-------------------------------------------");
    System.out.println("Top " + t + " in L1 = " + L1.top(t));
    System.out.println("Top " + t + " in L2 = " + L2.top(t));
    // Pop up a browser window displaying the most popular URL in L1
    try {
      String popular = L1.top(1).iterator().next(); // most popular URL in L1
      JEditorPane jep = new JEditorPane(popular);
      jep.setEditable(false);
      JFrame frame = new JFrame(popular);
      frame.getContentPane().add(new JScrollPane(jep), BorderLayout.CENTER);
      frame.setSize(640, 480);
      frame.setVisible(true);
    } catch (IOException e) { // ignore I/O exceptions
      }
  }
}