NumericMenuItem.java :  » Game » nullpomino » mu » nu » nullpo » gui » menu » Java Open Source

package mu.nu.nullpo.gui.menu;

public class NumericMenuItem extends MenuItem {

  private int minValue, maxValue, step;
  private int arithmeticStyle;

  public static final int ARITHSTYLE_MODULAR = 0, ARITHSTYLE_SATURATE = 1;

  public NumericMenuItem(String name, int color) {
    this(name, color, 50, 0, 100, 1, ARITHSTYLE_MODULAR);
  }

  public NumericMenuItem(String name, int color, int state, int minValue, int maxValue, int step) {
    this(name, color, state, minValue, maxValue, step, ARITHSTYLE_MODULAR);
  }

  public NumericMenuItem(String name, int color, int state, int minValue, int maxValue, int step, int arithmeticStyle) {
    super(name);
    this.color = color;
    this.state = state;
    this.minValue = minValue;
    this.maxValue = maxValue;
    this.step = step;
    this.arithmeticStyle = arithmeticStyle;
  }

  public void changeState(int change) {
    state += step*change;
    int range = maxValue - minValue;
    if (state > maxValue) {
      switch (arithmeticStyle) {
        case ARITHSTYLE_MODULAR:
          do {
            state -= range;
          } while (state > maxValue);
          break;
        case ARITHSTYLE_SATURATE: state = maxValue; break;
      }
    } else if (state < minValue) {
      switch (arithmeticStyle) {
        case ARITHSTYLE_MODULAR:
          do {
            state += range;
          } while (state < maxValue);
          break;
        case ARITHSTYLE_SATURATE: state = minValue; break;
      }
    }
  }

  public int getState() {
    return state;
  }
}