/** 
  * HF Receiver Controller Applet 1.0.0
  * @author Robert J Morton YE572246C
  * @version 25 November 2001, 
    revanped 16 November 2007, 
    Swing Version 31 January 2012
  * @copyright Robert J Morton (all rights reserved) */

/* This is the Applet's Selected Station Name panel */

import javax.swing.*;  // the Swing GUI system
import java.awt.*;     // abstract windiwing toolkit

public class frequencypanel extends JPanel {

  private static final long 
    serialVersionUID = 121L;  // what the hell this is for, I don't know!

  private Color bg;  // background colour transparent white
  hfbrx hf;
  boolean FrequenciesLoaded = false;
  int w, h, y;  // panel's width and height font vertical baseline offset
  int FreqNum;  // selected frequency
  Font font;    // font for panel lettering


  frequencypanel(int w, int h, int y, Font font, hfbrx hf, Color bg) {
    this.w = w;
    this.h = h;
    this.font = font;
    this.y = y;
    this.hf = hf;
    this.bg = bg;
  }


  void setFreq(int f) { FreqNum = f; repaint(); }


  // (RE)DISPLAY THE FREQUENCY CONFIRMATION FIELD
  public void paint(Graphics g) {     
    if(FrequenciesLoaded) {  // if frequencies download is complete

      // select the new listening frequency 
      hf.frequencies.setSelectedIndex(FreqNum);

      String s = hf.frequencies.getItemAt(FreqNum);

      g.setColor(bg);           // clear the field by
      g.fillRect(0,0,w,h);      // filling it with background colour
      g.setFont(font);          // use the big bold font
      g.setColor(Color.black);  // colour for display confirmation field
      g.drawString(s,4,y);      // display the lettering
    }
  }


  public void update(Graphics g) {paint(g);}


  void setState(boolean b) {FrequenciesLoaded = b;}
}