package net.shadowfacts.cacao.view.button

import net.shadowfacts.cacao.geometry.Point
import net.shadowfacts.cacao.util.EnumHelper
import net.shadowfacts.cacao.util.MouseButton
import net.shadowfacts.cacao.view.Label

/**
 * A button that cycles through enum values.
 * Left click: forwards
 * Right click: backwards
 * All other mouse buttons call the handler with the unchanged value
 *
 * @author shadowfacts
 * @param initialValue The initial enum value for this button.
 * @param localizer A function that takes an enum value and converts into a string for the button's label.
 */
class EnumButton<E: Enum<E>>(initialValue: E, val localizer: (E) -> String, padding: Double = 4.0): AbstractButton<EnumButton<E>>(Label(localizer(initialValue)), padding) {

	private val label: Label
		get() = content as Label

	/**
	 * The current value of the enum button.
	 * Updating this property will use the [localizer] to update the label.
	 */
	var value: E = initialValue
		set(value) {
			field = value
			label.text = localizer(value)
		}

	override fun mouseClicked(point: Point, mouseButton: MouseButton) {
		if (!disabled) {
			value = when (mouseButton) {
				MouseButton.LEFT -> EnumHelper.next(value)
				MouseButton.RIGHT -> EnumHelper.previous(value)
				else -> value
			}
		}

		super.mouseClicked(point, mouseButton)
	}

}