class AppButton { constructor(setting, iconName, buttonText, clickEvent) { this.button = new RoundRectButton(setting, iconName, buttonText, clickEvent); } } AppButton.TYPE_MOUSE_APP = 0; AppButton.TYPE_TYPING_PRACTICE = 1; AppButton.TYPE_TYPING_APP = 2; AppButton.NONE_ICON = ""; AppButton.NONE_BUTTON_TEXT = "";