package net.shadowfacts.cacao

import net.shadowfacts.cacao.util.KeyModifiers
import net.shadowfacts.cacao.window.Window

/**
 * @author shadowfacts
 */
interface Responder {

	val window: Window?

	val isFirstResponder: Boolean
		get() = window?.firstResponder === this

	val nextResponder: Responder?

	fun becomeFirstResponder() {
		if (window == null) {
			throw RuntimeException("Cannot become first responder while not in Window")
		}
		window!!.firstResponder = this
	}

	fun didBecomeFirstResponder() {}

	fun resignFirstResponder() {
		if (window == null) {
			throw RuntimeException("Cannot resign first responder while not in Window")
		}
		window!!.firstResponder = null
	}

	fun didResignFirstResponder() {}

	fun charTyped(char: Char, modifiers: KeyModifiers): Boolean {
		return false
	}

	fun keyPressed(keyCode: Int, modifiers: KeyModifiers): Boolean {
		return false
	}

}