import java.awt.*;

class ControlPanel extends Panel {
    private SetDaysFrame setDaysFrame;
    private BiorhythmCanvas biorhythmCanvas;
    private Biorhythm yourBiorhythm;
    private CalcDate calculator;
    private Button nextButton, prevButton, setButton;

    public ControlPanel(SetDaysFrame setDaysFrame, BiorhythmCanvas biorhythmCanvas, Biorhythm yourBiorhythm) {
        this.setDaysFrame = setDaysFrame;
        this.biorhythmCanvas = biorhythmCanvas;
        this.yourBiorhythm = yourBiorhythm;

        calculator = new CalcDate();

        setBackground(Color.gray);

        nextButton = new Button("Next");
        prevButton = new Button("Prev");
        setButton = new Button("Set Days");

        add(prevButton);
        add(nextButton);
        add(setButton);
    }

    public boolean action(Event e, Object o) {
        if (e.target == nextButton) {
            calculator.set(yourBiorhythm.getCalcYear(),
                           yourBiorhythm.getCalcMonth(),
                           yourBiorhythm.getCalcDate());

            long pastDays = calculator.getPastDays();
            calculator.setPastDays(pastDays + 1);

            yourBiorhythm.setCalculateDay(calculator.getYear(),
                                          calculator.getMonth(),
                                          calculator.getDate());
            biorhythmCanvas.repaint();

            return true;
        } else if (e.target == prevButton) {
            calculator.set(yourBiorhythm.getCalcYear(),
                           yourBiorhythm.getCalcMonth(),
                           yourBiorhythm.getCalcDate());

            long pastDays = calculator.getPastDays();
            calculator.setPastDays(pastDays - 1);

            yourBiorhythm.setCalculateDay(calculator.getYear(),
                                          calculator.getMonth(),
                                          calculator.getDate());
            biorhythmCanvas.repaint();

            return true;
        } else if (e.target == setButton) {
            setDaysFrame.show();
            setDaysFrame.repaint();
            return true;
        }
        return false;
    }

    public void setBackgroundColor(Color backgroundColor) {
        setBackground(backgroundColor);
    }

    private void mb(int x, int y, Button button, GridBagLayout gb, GridBagConstraints gc, Panel p) {
        gc.gridx = x;
        gc.gridy = y;
        gb.setConstraints(button, gc);
        p.add(button);
    }
}