package ru.m.control;

import flash.display.Stage;
import flash.events.KeyboardEvent;
import hw.signal.Signal;
import ru.m.control.DeviceAction;

class KeyboardDevice implements IControlDevice {
  public var type(default, null):DeviceType;
  public var signal(default, null):Signal2<DeviceAction, Bool>;

  private var stage:Stage;

  public function new(stage:Stage) {
    this.stage = stage;
    type = DeviceType.KEYBOARD;
    signal = new Signal2();
    stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
    stage.addEventListener(KeyboardEvent.KEY_UP, onKeyUp);
  }

  private function onKeyDown(event:KeyboardEvent):Void {
    signal.emit(KEY(event.keyCode), true);
  }

  private function onKeyUp(event:KeyboardEvent):Void {
    signal.emit(KEY(event.keyCode), false);
  }

  public function dispose():Void {
    if (stage != null) {
      stage.removeEventListener(KeyboardEvent.KEY_DOWN, onKeyDown);
      stage.removeEventListener(KeyboardEvent.KEY_UP, onKeyUp);
      stage = null;
    }
  }
}