material-ui/utils/events.js

React Components that Implement Google's Material Design.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = {
  once: function once(el, type, callback) {
    var typeArray = type ? type.split(' ') : [];
    var recursiveFunction = function recursiveFunction(event) {
      event.target.removeEventListener(event.type, recursiveFunction);
      return callback(event);
    };

    for (var i = typeArray.length - 1; i >= 0; i--) {
      this.on(el, typeArray[i], recursiveFunction);
    }
  },
  on: function on(el, type, callback) {
    if (el.addEventListener) {
      el.addEventListener(type, callback);
    } else {
      // IE8+ Support
      el.attachEvent('on' + type, function () {
        callback.call(el);
      });
    }
  },
  off: function off(el, type, callback) {
    if (el.removeEventListener) {
      el.removeEventListener(type, callback);
    } else {
      // IE8+ Support
      el.detachEvent('on' + type, callback);
    }
  },
  isKeyboard: function isKeyboard(event) {
    return ['keydown', 'keypress', 'keyup'].indexOf(event.type) !== -1;
  }
};