/** 
  * 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 Color bg;  // background colour transparent white
  hfbrx_swing 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_swing 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(); }

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

      // select the new listening frequency 
      hf.frequencies.setSelectedIndex(FreqNum);
      String s = (String)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);  /* display confirmation field in 
                                   white lettering */
      g.drawString(s, 4, y);    // display the lettering
    }
  }

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

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