function _typeof(obj) {
  if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
    _typeof = function _typeof(obj) {
      return typeof obj;
    };
  } else {
    _typeof = function _typeof(obj) {
      return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
    };
  }

  return _typeof(obj);
}

function _classCallCheck(instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a function");
  }
}

function _defineProperties(target, props) {
  for (var i = 0; i < props.length; i++) {
    var descriptor = props[i];
    descriptor.enumerable = descriptor.enumerable || false;
    descriptor.configurable = true;
    if ("value" in descriptor) descriptor.writable = true;
    Object.defineProperty(target, descriptor.key, descriptor);
  }
}

function _createClass(Constructor, protoProps, staticProps) {
  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
  if (staticProps) _defineProperties(Constructor, staticProps);
  return Constructor;
}

function _possibleConstructorReturn(self, call) {
  if (call && (_typeof(call) === "object" || typeof call === "function")) {
    return call;
  }

  return _assertThisInitialized(self);
}

function _assertThisInitialized(self) {
  if (self === void 0) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return self;
}

function _getPrototypeOf(o) {
  _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
    return o.__proto__ || Object.getPrototypeOf(o);
  };
  return _getPrototypeOf(o);
}

function _inherits(subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function");
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      writable: true,
      configurable: true
    }
  });
  if (superClass) _setPrototypeOf(subClass, superClass);
}

function _setPrototypeOf(o, p) {
  _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
    o.__proto__ = p;
    return o;
  };

  return _setPrototypeOf(o, p);
}
/**
 * Copyright IBM Corp. 2016, 2018
 *
 * This source code is licensed under the Apache-2.0 license found in the
 * LICENSE file in the root directory of this source tree.
 */


import settings from '../../globals/js/settings';
import mixin from '../../globals/js/misc/mixin';
import createComponent from '../../globals/js/mixins/create-component';
import initComponentBySearch from '../../globals/js/mixins/init-component-by-search';

var toArray = function toArray(arrayLike) {
  return Array.prototype.slice.call(arrayLike);
};

var ProgressIndicator =
/*#__PURE__*/
function (_mixin) {
  _inherits(ProgressIndicator, _mixin);
  /**
   * ProgressIndicator.
   * @extends CreateComponent
   * @extends InitComponentBySearch
   * @param {HTMLElement} element The element representing the ProgressIndicator.
   * @param {object} [options] The component options.
   * @property {string} [options.selectorStepElement] The CSS selector to find step elements.
   * @property {string} [options.selectorCurrent] The CSS selector to find the current step element.
   * @property {string} [options.selectorIncomplete] The CSS class to find incomplete step elements.
   * @property {string} [options.selectorComplete] The CSS selector to find completed step elements.
   * @property {string} [options.classStep] The className for a step element.
   * @property {string} [options.classComplete] The className for a completed step element.
   * @property {string} [options.classCurrent] The className for the current step element.
   * @property {string} [options.classIncomplete] The className for a incomplete step element.
   */


  function ProgressIndicator(element, options) {
    var _this;

    _classCallCheck(this, ProgressIndicator);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(ProgressIndicator).call(this, element, options));
    /**
     * The component state.
     * @type {object}
     */

    _this.state = {
      /**
       * The current step index.
       * @type {number}
       */
      currentIndex: _this.getCurrent().index,

      /**
       * Total number of steps.
       * @type {number}
       */
      totalSteps: _this.getSteps().length
    };

    _this.addOverflowTooltip();

    return _this;
  }
  /**
   * Returns all steps with details about element and index.
   */


  _createClass(ProgressIndicator, [{
    key: "getSteps",
    value: function getSteps() {
      return toArray(this.element.querySelectorAll(this.options.selectorStepElement)).map(function (element, index) {
        return {
          element: element,
          index: index
        };
      });
    }
    /**
     * Returns current step; gives detail about element and index.
     */

  }, {
    key: "getCurrent",
    value: function getCurrent() {
      var currentEl = this.element.querySelector(this.options.selectorCurrent);
      return this.getSteps().filter(function (step) {
        return step.element === currentEl;
      })[0];
    }
    /**
     * Sets the current step.
     * * @param {Number} new step index or use default in `this.state.currentIndex`.
     */

  }, {
    key: "setCurrent",
    value: function setCurrent() {
      var _this2 = this;

      var newCurrentStep = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.state.currentIndex;
      var changed = false;

      if (newCurrentStep !== this.state.currentIndex) {
        this.state.currentIndex = newCurrentStep;
        changed = true;
      }

      if (changed) {
        this.getSteps().forEach(function (step) {
          if (step.index < newCurrentStep) {
            _this2._updateStep({
              element: step.element,
              className: _this2.options.classComplete,
              html: _this2._getSVGComplete()
            });
          }

          if (step.index === newCurrentStep) {
            _this2._updateStep({
              element: step.element,
              className: _this2.options.classCurrent,
              html: _this2._getCurrentSVG()
            });
          }

          if (step.index > newCurrentStep) {
            _this2._updateStep({
              element: step.element,
              className: _this2.options.classIncomplete,
              html: _this2._getIncompleteSVG()
            });
          }
        });
      }
    }
    /**
     * Update step with correct inline SVG and className
     * @param {object} args
     * @param {object} [args.element] target element
     * @param {object} [args.className] new className
     * @param {object} [args.html] new inline SVG to insert
     */

  }, {
    key: "_updateStep",
    value: function _updateStep(args) {
      var element = args.element,
          className = args.className,
          html = args.html;

      if (element.firstElementChild) {
        element.removeChild(element.firstElementChild);
      }

      if (!element.classList.contains(className)) {
        element.setAttribute('class', this.options.classStep);
        element.classList.add(className);
      }

      element.insertAdjacentHTML('afterbegin', html);
    }
    /**
     * Returns HTML string for an SVG used to represent a compelted step (checkmark)
     */

  }, {
    key: "_getSVGComplete",
    value: function _getSVGComplete() {
      return "<svg width=\"24px\" height=\"24px\" viewBox=\"0 0 24 24\">\n        <circle cx=\"12\" cy=\"12\" r=\"12\"></circle>\n        <polygon points=\"10.3 13.6 7.7 11 6.3 12.4 10.3 16.4 17.8 9 16.4 7.6\"></polygon>\n      </svg>";
    }
    /**
     * Returns HTML string for an SVG used to represent current step (circles, like a radio button, but not.)
     */

  }, {
    key: "_getCurrentSVG",
    value: function _getCurrentSVG() {
      return "<svg>\n        <circle cx=\"12\" cy=\"12\" r=\"12\"></circle>\n        <circle cx=\"12\" cy=\"12\" r=\"6\"></circle>\n      </svg>";
    }
    /**
     * Returns HTML string for an SVG used to represent incomple step (grey empty circle)
     */

  }, {
    key: "_getIncompleteSVG",
    value: function _getIncompleteSVG() {
      return "<svg>\n        <circle cx=\"12\" cy=\"12\" r=\"12\"></circle>\n      </svg>";
    }
  }, {
    key: "addOverflowTooltip",
    value: function addOverflowTooltip() {
      var _this3 = this;

      var stepLabels = toArray(this.element.querySelectorAll(this.options.selectorLabel));
      var tooltips = toArray(this.element.querySelectorAll(this.options.selectorTooltip));
      stepLabels.forEach(function (step) {
        if (step.scrollWidth > _this3.options.maxWidth) {
          step.classList.add(_this3.options.classOverflowLabel);
        }
      });
      tooltips.forEach(function (tooltip) {
        var childText = tooltip.querySelector(_this3.options.selectorTooltipText);

        if (childText.scrollHeight > _this3.options.tooltipMaxHeight) {
          tooltip.classList.add(_this3.options.classTooltipMulti);
        }
      });
    }
  }], [{
    key: "options",

    /**
     * The component options.
     * If `options` is specified in the constructor,
     * {@linkcode ProgressIndicator.create .create()}, or {@linkcode ProgressIndicator.init .init()},
     * properties in this object are overriden for the instance being created.
     * @member ProgressIndicator.options
     * @type {object}
     * @property {string} selectorInit The CSS selector to find content switcher button set.
     * @property {string} [selectorStepElement] The CSS selector to find step elements.
     * @property {string} [selectorCurrent] The CSS selector to find the current step element.
     * @property {string} [selectorIncomplete] The CSS class to find incomplete step elements.
     * @property {string} [selectorComplete] The CSS selector to find completed step elements.
     * @property {string} [classStep] The className for a step element.
     * @property {string} [classComplete] The className for a completed step element.
     * @property {string} [classCurrent] The className for the current step element.
     * @property {string} [classIncomplete] The className for a incomplete step element.
     */
    get: function get() {
      var prefix = settings.prefix;
      return {
        selectorInit: '[data-progress]',
        selectorStepElement: ".".concat(prefix, "--progress-step"),
        selectorCurrent: ".".concat(prefix, "--progress-step--current"),
        selectorIncomplete: ".".concat(prefix, "--progress-step--incomplete"),
        selectorComplete: ".".concat(prefix, "--progress-step--complete"),
        selectorLabel: ".".concat(prefix, "--progress-label"),
        selectorTooltip: ".".concat(prefix, "--tooltip"),
        selectorTooltipText: ".".concat(prefix, "--tooltip__text"),
        classStep: "".concat(prefix, "--progress-step"),
        classComplete: "".concat(prefix, "--progress-step--complete"),
        classCurrent: "".concat(prefix, "--progress-step--current"),
        classIncomplete: "".concat(prefix, "--progress-step--incomplete"),
        classOverflowLabel: "".concat(prefix, "--progress-label-overflow"),
        classTooltipMulti: "".concat(prefix, "--tooltip_multi"),
        maxWidth: 87,
        tooltipMaxHeight: 21
      };
    }
  }]);

  ProgressIndicator.components = new WeakMap();
  return ProgressIndicator;
}(mixin(createComponent, initComponentBySearch));

export default ProgressIndicator;