/** 
  * Current Account Balances: Graphical Display Applet
  * @author Robert J Morton <robmorton@clara.net>
  * @version 12 July 2000, 27 April 2012
  * @copyright July 2000 Robert J Morton (all rights reserved) */

//  THE FILE-SELECTOR BUTTONS CLASS

import java.awt.*;        // for graphics operations (GUI)
import java.awt.event.*;  // for the new-fangled 1.1 event handling
import javax.swing.*;     // swing GUI widgets library

public class selfile extends JPanel {

  private static final int 
    NumFi[] = {6,6,6,5,1,4,5,7,1,1,1,1},
    DEFLT[] = {0,0,0,0,0,2,0,2,0,0,0,0};

  private static final String
    FILES[][] = {  // Names of the relevant data files for each view
      {"inc_me","incwif","incwel","inc_cb","incdla","inctot"},
      {"utelec","utgas" ,"utmai" ,"utpho" ,"uttv"  ,"uttot" },
      {"taxinc","taxni4","taxni1","tax_cc","taxwat","taxtot"},
      {"inctot","sp_tax","sp_fix","sp_uti","sp_car"},
      {"pppd"},
      {"surp3","surp1","surp4","surp2"},
      {"fixmor","fixend","fixhse","fixcon","fixtot"},
      {"cartax","carins","carpet","carmai","carpkg","carpch","cartot"},
      {"elekwh"},
      {"utelec"},
      {"gaskwh"},
      {"utgas"}
    },
    LABLS[][] = {  // Button annotations for each view
      {"My Income","Wife's Income","Welfare (JSA)","Child Benefit",
       "Disability Living Allowance","Total Family Income"},
      {"Electricity","Gas","Boiler Maintenance","Telephone",
       "Television Licence","Total"},
      {"Income Tax","NI Class 4","NI Class 1","Council Tax",
       "Water Rates","Total Direct Taxation"},
      {"A = Gross Income","B = A - all Direct Taxes","C = B - Fixed Costs",
       "D = C - Utilities Costs","E = D - Car Costs"},
      {"Per Person Per Day"},
      {"SI on Survival Budget","SI on SB if we had no car",
       "SI on Degradation Budget","SI on DB if we had no car"},
      {"Mortgage Payments","Endowment Policy","House Insurance",
       "Contents Insurance","Total Fixed Costs"},
      {"Road Tax","Car Insurance","Fuel (Petrol)","Maintenance",
       "Parking Costs","Capital Costs","Total Car Costs"},
      {"Electrical Energy"},
      {"Electricity Cost"},
      {"Thermal Energy (Gas)"},
      {"Gas Cost"}
    };

  private String DF = "";
  private static int v = 0;  // View number
  private int nf = 7;        // maximum number of files available
  private graphs ap;         // instance of the main panel

  selfile(graphs ap, int v) {
    this.v = v;       // number of the current data view
    this.ap = ap;     // copy instance reference of the loader
    setLayout(null);  // to allow  panel to be laid out manually

    // GET THE NUMBER OF .DAT FILES IN THIS VIEW
    nf = NumFi[v]; if(nf > 7) nf = 7;  // only space for 7 buttons

    //DEFAULT BUTTON STATES
    boolean DB[] = {false,false,false,false,false,false,false};
    int df = DEFLT[v];  // default file number for this view
    DB[df] = true;      // set specified default radio button

    ButtonGroup G = new ButtonGroup();        // group for the radio-buttons
    JRadioButton B[] = new JRadioButton[nf];  // radio-button references

    for(int i = 0; i < nf; i++) {  // for each button in the upper group
      B[i] = new JRadioButton(LABLS[v][i], DB[i]);  // create it 
      G.add(B[i]);                    // add it to the button group
      add(B[i]);                      // add it to the panel
      B[i].setBounds(0,i*25,240,20);  // set its position and size

      /* Create an event listener for this button 
      and add it to the event handler's list. */

      B[i].addItemListener(new graphbut(i,this));
    }
    DF = FILES[v][df];  // set the default data-file
  }


  String getDefaultFile(){return DF;}


  void getData(int i) {          // called only by the listener class below
    if(i < 0 && i >= nf) i = 0;  // if selection is within valid range
    ap.loadData(FILES[v][i]);    // trigger loader to get selected file
  }
}




// LISTENS FOR EVENTS FROM THE FILE SELECTOR BUTTONS
class graphbut implements ItemListener {
  int id;      // one of the above events
  selfile SF;  // the application that called: always the above class

  public graphbut(int id, selfile SF) {  // construct new checkbox event
    this.id = id;  // set id number pertaining to this instance of 'graphbut'
    this.SF = SF;  // set the reference to the instance of the above class
  }                // from which it came. (only ever one instance anyway).

  // a checkbox event has occurred from checkbox 'id'
  public void itemStateChanged(ItemEvent e) {

    /* To avoid a double pass through setYear(): only act on the
    mouse release of the button and not on the mouse press. */

    if(e.getStateChange() == ItemEvent.SELECTED) {

      /* Using the number of radio-button on whose instance
      of 'graphbut' this method was invoked, execute the
      getData() method in the above class. */

      switch(id) {
        case 0: SF.getData(0); break;
        case 1: SF.getData(1); break;
        case 2: SF.getData(2); break;
        case 3: SF.getData(3); break;
        case 4: SF.getData(4); break;
        case 5: SF.getData(5); break;
        case 6: SF.getData(6);
      }
    }
  }
}