var AIRTIME = (function (AIRTIME) {
  var mod,
    DEFAULT_CLASS = "ui-button ui-state-default",
    DISABLED_CLASS = "ui-state-disabled";

  if (AIRTIME.button === undefined) {
    AIRTIME.button = {};
  }
  mod = AIRTIME.button;

  mod.isDisabled = function (c, useParent) {
    var button = $("." + c);
    if (useParent) {
      button = button.parent();
    }

    if (button.hasClass(DISABLED_CLASS)) {
      return true;
    }

    return false;
  };

  mod.enableButton = function (c, useParent) {
    if (useParent) {
      var button = $("." + c).parent();
    } else {
      var button = $("." + c);
    }

    if (button.hasClass(DISABLED_CLASS)) {
      button.removeClass(DISABLED_CLASS);
      button.removeAttr("disabled");
    }
  };

  mod.disableButton = function (c, useParent) {
    if (useParent) {
      var button = $("." + c).parent();
    } else {
      var button = $("." + c);
    }

    if (!button.hasClass(DISABLED_CLASS)) {
      button.addClass(DISABLED_CLASS);
      button.attr("disabled", "disabled");
    }
  };

  return AIRTIME;
})(AIRTIME || {});