/** 
  * Route Search Panel
  * @author Robert J Morton YE572246C
  * @version 04 December 2007
  * @copyright Robert J Morton (all rights reserved) */

import javax.swing.*;     // Java Swing GUI utilities
import java.awt.*;        // Java Abstract Windowing Toolkit
import java.awt.event.*;  // for the new-fangled 1.1 event handling


class findroute {
  private int
    SearchIndex = 0,  // list number of route name we have searched up to

    Tx = 305, Ty = 15,  // top left corner of text field on applet panel
    Tw = 224, Th = 35,  // Text field width and height

    Bx = 533, By = 15,  // top left corner of Search button on applet panel
    Bw = 72, Bh = 35;   // Search button width and height


  private String SrchStrng = "";  // search string for finding a route name
  private JTextField FindRoute;   // ref for a text field for route search
  private Label FindLab;          // reference for the 'Find' button's label
  private FontMetrics fm, fm2;    // typeface dimensions for the above fonts

  private movmap mm;        // reference to the parent applet class
  private routesel rs;      // reference to the route selector class
  private JButton FindBut;  // button to go to the next waypoint in the list
  private Font font, font2; // refs for large & small fonts used in this applet

  findroute(movmap mm, Container cp, routesel rs, int L) {
    this.mm = mm;  // context reference of calling applet
    this.rs = rs;  // reference of route selector object
    String S = "Enter a route name."; 
    if(L == 1)
      S = "Digite um nome de rota.";
    FindRoute = new JTextField(S); 
    cp.add(FindRoute); 
    FindRoute.setBounds(Tx,Ty,Tw,Th); 
    FindRoute.addActionListener(new frlisten(frlisten.FINDROUTE,this));

    S = "Search"; if(L == 1) S = "Procurar";
    FindBut = new JButton(S); 
    cp.add(FindBut); 
    FindBut.setBounds(Bx,By,Bw,Bh);
    FindBut.setMargin(new Insets(3,3,3,3));
    FindBut.addActionListener(new frlisten(frlisten.FINDBUT, this));
  }


  void findRoute() {  // start/resume search from SearchIndex value
    String s = FindRoute.getText().trim().toLowerCase();

    /* If different from last time's search string, update
    search string and reset search index to start of list */

    if(!SrchStrng.equals(s)) {
      SrchStrng = s;
      SearchIndex = 0;
    }

    int
      I = rs.getTotalRoutes(),  // number of route names in the list
      i = SearchIndex;          // item after where we got to last time

    /* For as many routes as there are in the list, get next route name
    then if search string found in this route name, select the route
    name, mark from where to start searching next time, clear possible
    'not found' message from last time and select the current route. */

    for(int k = 0; k < I; k++) {
      s = rs.getRouteName(i);
      if(s.indexOf(SrchStrng) != -1) {
        rs.selectRouteName(i);
        SearchIndex = i + 1;
        System.out.println("");
        rs.routeSelect();
        return;
      } else if(++i >= I)  // else loop back to the beginning
        i = 0;
    }
    System.out.println("Search string not found in any route name.");
  }
}



//LISTENS FOR EVENTS FROM THE BUTTONS
class frlisten implements ActionListener {
  static final int 
    FINDROUTE = 1,  // 'route search text field' event
    FINDBUT = 2;    // 'route search button pressed' event
  int id;           // one of the above
  findroute ap;     // the application that called: always the above panel

  public frlisten(int id, findroute ap) {  // constructor for a new command
    this.id = id;
    this.ap = ap;
  }

  // one of the buttons has been clicked
  public void actionPerformed(ActionEvent e) {
    switch(id) {  // id of this instance of ActionEvent
      case FINDROUTE: ap.findRoute(); break;  // it was the 'find' field C/R
      case FINDBUT: ap.findRoute();           // it was the 'find' button
    }
  }
}