ISetting.java

package net.uniqraft.murder.match.settings;

public interface ISetting<T> {
	public T getDefault();
	public T value();
	public void set(T value);
	public String getName();

	public default String getValueName() {
		Object obj = value();
		if (obj instanceof Boolean) {
			return (boolean)obj ? "Yes" : "No"; 
		}

		return obj.toString();
	}
	
	public default boolean isHidden() {
		return false;
	}

	public default boolean isDefault() {
		return getDefault().equals(value());
	}

	@SuppressWarnings("unchecked")
	public default void increase() {
		// If value is a boolean
		if (value() instanceof Boolean) {
			ISetting<Boolean> b = (ISetting<Boolean>) this;
			b.set(!b.value()); // Toggle
		}
		// If value is a float
		if (value() instanceof Float) {
			ISetting<Float> f = (ISetting<Float>) this;
			f.set(Math.round((f.value() + .1f) * 10f) / 10f); // Increase by 0.1
		}
		// If value is an integer
		else if (value() instanceof Integer) {
			ISetting<Integer> i = (ISetting<Integer>) this;
			i.set(i.value() + 1); // Increase by 1
		}
		// If value is an enum
		else if (value() instanceof Enum<?>) {
			ISetting<Enum<?>> e = (ISetting<Enum<?>>) this;

			Enum<?>[] values = e.value().getClass().getEnumConstants();
			
			int next = e.value().ordinal() + 1;
			if (next >= values.length) next = 0;
			
			e.set(Enum.valueOf(e.value().getClass(), values[next].name()));
		}
	}

	@SuppressWarnings("unchecked")
	public default void decrease() {
		// If value is a boolean
		if (value() instanceof Boolean) {
			ISetting<Boolean> b = (ISetting<Boolean>) this;
			b.set(!b.value()); // Toggle
		}
		// If value is a float
		if (value() instanceof Float) {
			ISetting<Float> f = (ISetting<Float>) this;
			f.set(Math.round((f.value() - .1f) * 10f) / 10f); // Decrease by 0.1
		}
		// If value is an integer
		else if (value() instanceof Integer) {
			ISetting<Integer> i = (ISetting<Integer>) this;
			i.set(i.value() - 1); // Decrease by 1
		}
		// If value is an enum
		else if (value() instanceof Enum<?>) {
			ISetting<Enum<?>> e = (ISetting<Enum<?>>) this;

			Enum<?>[] values = e.value().getClass().getEnumConstants();
			
			int next = e.value().ordinal() - 1;
			if (next <= 0) next = values.length - 1;
			
			e.set(Enum.valueOf(e.value().getClass(), values[next].name()));
		}
	}
}