package com.caplet.manna;

import java.awt.*;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

/**
 * Each side of the Manna Mouse screen is a separately growing culture dish.
 * A Culture includes a GA, a visualisation of the GA: a GAPainter, and the
 * various GUI controls specific to each GA.
 *
 * @author Mark S. Miller, markm@caplet.com
 * @author Terry Stanley, tstanley@cocoon.com
 */
public class Culture extends Panel implements ItemListener {

    private Panel myControls;
    /*package*/
    GA myGA;
    /*package*/
    GAPainter ourEvolver = null;

    /**
     * Makes a new Culture with the default settings
     */
    public Culture() {
        myGA = new GA();

        myControls = new Panel();
        myControls.setForeground(new Color(0, 0, 51));  // blue-black
        myControls.setBackground(Color.white);
        myControls.setFont(new Font("Times Roman", Font.BOLD, 9));
        myControls.setLayout(new BorderLayout());

        Panel north, center;
        Choice popSize, mutants;

        north = new Panel();
        north.setForeground(new Color(0, 0, 51));  // blue-black
        north.setBackground(Color.white);
        myControls.setFont(new Font("Times Roman", Font.BOLD, 9));
        north.setLayout(new FlowLayout(FlowLayout.CENTER));
        north.add(new Label("population:"));
        popSize = new Choice();
        popSize.addItemListener(this);
        popSize.addItem("512");
        popSize.addItem("1024");
        popSize.addItem("2048");
        popSize.select("1024");
        north.add(popSize);
        north.add(new Label("mutants:"));
        mutants = new Choice();
        mutants.addItemListener(this);
        mutants.addItem("0%");
        mutants.addItem("2%");
        mutants.addItem("5%");
        mutants.select("2%");
        north.add(mutants);

        myControls.add("North", north);

        center = new Panel();
        center.setForeground(new Color(0, 0, 51));  // blue-black
        center.setBackground(Color.white);
        myControls.setFont(new Font("Times Roman", Font.BOLD, 9));
        center.setLayout(new FlowLayout(FlowLayout.CENTER));

        Checkbox gray = new Checkbox("gray", null, false);
        gray.addItemListener(this);
        Checkbox uniform = new Checkbox("uniform", null, true);
        uniform.addItemListener(this);
        Checkbox local = new Checkbox("local", null, false);
        local.addItemListener(this);
        Checkbox consumed = new Checkbox("consumed", null, true);
        consumed.addItemListener(this);

        gray.setEnabled(false);
        local.setEnabled(false);

        center.add(gray);
        center.add(uniform);
        center.add(local);
        center.add(consumed);

        myControls.add("Center", center);

        setLayout(new BorderLayout());
        add("South", myControls);
        add("Center", myGA);
    }

    public void itemStateChanged(ItemEvent e) {
        int state = e.getStateChange();
        ItemSelectable item = e.getItemSelectable();
        if (item instanceof Checkbox) {

            boolean value = (state == ItemEvent.SELECTED) ? true : false;

            String who = ((Checkbox)item).getLabel();

            synchronized (ourEvolver) {
                if (who.indexOf("gray") != -1) {
                    myGA.amGray = value;
                } else if (who.indexOf("uniform") != -1) {
                    myGA.amUniform = value;
                } else if (who.indexOf("local") != -1) {
                    myGA.amLocal = value;
                } else if (who.indexOf("consumed") != -1) {
                    myGA.amConsumed = value;
                }
            }
        } else if (item instanceof Choice && state == ItemEvent.SELECTED) {

            String who = ((Choice)item).getSelectedItem();

            float newMutationRate = (float)0.0;
            int newPopulationSize = myGA.popSize();
            if (who.equals("0%")) {
                newMutationRate = (float)0.0;
            } else if (who.equals("2%")) {
                newMutationRate = (float)0.02;
            } else if (who.equals("5%")) {
                newMutationRate = (float)0.05;

            } else if (who.equals("512")) {
                newPopulationSize = 512;
            } else if (who.equals("1024")) {
                newPopulationSize = 1024;
            } else if (who.equals("2048")) {
                newPopulationSize = 2048;
            }

            synchronized (ourEvolver) {
                myGA.myMutationRate = newMutationRate;
                if (newPopulationSize != myGA.popSize()) {
                    myGA.setPopSize(newPopulationSize);
                    myGA.update(myGA.getGraphics());  // clear, then paint
                }
            }
        }
    }
}