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/*!
 * shariff - v1.26.0 - Fri, 28 Jul 2017 11:36:42 GMT
 * https://github.com/heiseonline/shariff
 * Copyright (c) 2017 Ines Pauer, Philipp Busse, Sebastian Hilbig, Erich Kramer, Deniz Sesli
 * Licensed under the MIT license
 */
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/*!
 * jQuery Form Plugin
 * version: 3.51.0-2014.06.20
 * Requires jQuery v1.5 or later
 * Copyright (c) 2014 M. Alsup
 * Examples and documentation at: http://malsup.com/jquery/form/
 * Project repository: https://github.com/malsup/form
 * Dual licensed under the MIT and GPL licenses.
 * https://github.com/malsup/form#copyright-and-license
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zero elements found by selector"+(e.isReady?"":" (DOM not ready)")),this)}return n.delegation?(e(document).off("submit.form-plugin",this.selector,t).off("click.form-plugin",this.selector,r).on("submit.form-plugin",this.selector,n,t).on("click.form-plugin",this.selector,n,r),this):this.ajaxFormUnbind().bind("submit.form-plugin",n,t).bind("click.form-plugin",n,r)},e.fn.ajaxFormUnbind=function(){return this.unbind("submit.form-plugin click.form-plugin")},e.fn.formToArray=function(t,r){var a=[];if(0===this.length)return a;var i,o=this[0],s=this.attr("id"),u=t?o.getElementsByTagName("*"):o.elements;if(u&&!/MSIE [678]/.test(navigator.userAgent)&&(u=e(u).get()),s&&(i=e(':input[form="'+s+'"]').get(),i.length&&(u=(u||[]).concat(i))),!u||!u.length)return a;var c,l,f,m,d,p,h;for(c=0,p=u.length;p>c;c++)if(d=u[c],f=d.name,f&&!d.disabled)if(t&&o.clk&&"image"==d.type)o.clk==d&&(a.push({name:f,value:e(d).val(),type:d.type}),a.push({name:f+".x",value:o.clk_x},{name:f+".y",value:o.clk_y}));else if(m=e.fieldValue(d,!0),m&&m.constructor==Array)for(r&&r.push(d),l=0,h=m.length;h>l;l++)a.push({name:f,value:m[l]});else if(n.fileapi&&"file"==d.type){r&&r.push(d);var v=d.files;if(v.length)for(l=0;l<v.length;l++)a.push({name:f,value:v[l],type:d.type});else a.push({name:f,value:"",type:d.type})}else null!==m&&"undefined"!=typeof m&&(r&&r.push(d),a.push({name:f,value:m,type:d.type,required:d.required}));if(!t&&o.clk){var g=e(o.clk),x=g[0];f=x.name,f&&!x.disabled&&"image"==x.type&&(a.push({name:f,value:g.val()}),a.push({name:f+".x",value:o.clk_x},{name:f+".y",value:o.clk_y}))}return a},e.fn.formSerialize=function(t){return e.param(this.formToArray(t))},e.fn.fieldSerialize=function(t){var r=[];return this.each(function(){var a=this.name;if(a){var n=e.fieldValue(this,t);if(n&&n.constructor==Array)for(var i=0,o=n.length;o>i;i++)r.push({name:a,value:n[i]});else null!==n&&"undefined"!=typeof n&&r.push({name:this.name,value:n})}}),e.param(r)},e.fn.fieldValue=function(t){for(var r=[],a=0,n=this.length;n>a;a++){var i=this[a],o=e.fieldValue(i,t);null===o||"undefined"==typeof o||o.constructor==Array&&!o.length||(o.constructor==Array?e.merge(r,o):r.push(o))}return r},e.fieldValue=function(t,r){var a=t.name,n=t.type,i=t.tagName.toLowerCase();if(void 0===r&&(r=!0),r&&(!a||t.disabled||"reset"==n||"button"==n||("checkbox"==n||"radio"==n)&&!t.checked||("submit"==n||"image"==n)&&t.form&&t.form.clk!=t||"select"==i&&-1==t.selectedIndex))return null;if("select"==i){var o=t.selectedIndex;if(0>o)return null;for(var s=[],u=t.options,c="select-one"==n,l=c?o+1:u.length,f=c?o:0;l>f;f++){var m=u[f];if(m.selected){var d=m.value;if(d||(d=m.attributes&&m.attributes.value&&!m.attributes.value.specified?m.text:m.value),c)return d;s.push(d)}}return s}return e(t).val()},e.fn.clearForm=function(t){return this.each(function(){e("input,select,textarea",this).clearFields(t)})},e.fn.clearFields=e.fn.clearInputs=function(t){var r=/^(?:color|date|datetime|email|month|number|password|range|search|tel|text|time|url|week)$/i;return this.each(function(){var a=this.type,n=this.tagName.toLowerCase();r.test(a)||"textarea"==n?this.value="":"checkbox"==a||"radio"==a?this.checked=!1:"select"==n?this.selectedIndex=-1:"file"==a?/MSIE/.test(navigator.userAgent)?e(this).replaceWith(e(this).clone(!0)):e(this).val(""):t&&(t===!0&&/hidden/.test(a)||"string"==typeof t&&e(this).is(t))&&(this.value="")})},e.fn.resetForm=function(){return this.each(function(){("function"==typeof this.reset||"object"==typeof this.reset&&!this.reset.nodeType)&&this.reset()})},e.fn.enable=function(e){return void 0===e&&(e=!0),this.each(function(){this.disabled=!e})},e.fn.selected=function(t){return void 0===t&&(t=!0),this.each(function(){var r=this.type;if("checkbox"==r||"radio"==r)this.checked=t;else if("option"==this.tagName.toLowerCase()){var a=e(this).parent("select");t&&a[0]&&"select-one"==a[0].type&&a.find("option").selected(!1),this.selected=t}})},e.fn.ajaxSubmit.debug=!1});
;
/**
 * @file
 * Progress bar.
 */

(function ($, Drupal) {

  'use strict';

  /**
   * Theme function for the progress bar.
   *
   * @param {string} id
   *   The id for the progress bar.
   *
   * @return {string}
   *   The HTML for the progress bar.
   */
  Drupal.theme.progressBar = function (id) {
    return '<div id="' + id + '" class="progress" aria-live="polite">' +
      '<div class="progress__label">&nbsp;</div>' +
      '<div class="progress__track"><div class="progress__bar"></div></div>' +
      '<div class="progress__percentage"></div>' +
      '<div class="progress__description">&nbsp;</div>' +
      '</div>';
  };

  /**
   * A progressbar object. Initialized with the given id. Must be inserted into
   * the DOM afterwards through progressBar.element.
   *
   * Method is the function which will perform the HTTP request to get the
   * progress bar state. Either "GET" or "POST".
   *
   * @example
   * pb = new Drupal.ProgressBar('myProgressBar');
   * some_element.appendChild(pb.element);
   *
   * @constructor
   *
   * @param {string} id
   *   The id for the progressbar.
   * @param {function} updateCallback
   *   Callback to run on update.
   * @param {string} method
   *   HTTP method to use.
   * @param {function} errorCallback
   *   Callback to call on error.
   */
  Drupal.ProgressBar = function (id, updateCallback, method, errorCallback) {
    this.id = id;
    this.method = method || 'GET';
    this.updateCallback = updateCallback;
    this.errorCallback = errorCallback;

    // The WAI-ARIA setting aria-live="polite" will announce changes after
    // users
    // have completed their current activity and not interrupt the screen
    // reader.
    this.element = $(Drupal.theme('progressBar', id));
  };

  $.extend(Drupal.ProgressBar.prototype, /** @lends Drupal.ProgressBar# */{

    /**
     * Set the percentage and status message for the progressbar.
     *
     * @param {number} percentage
     *   The progress percentage.
     * @param {string} message
     *   The message to show the user.
     * @param {string} label
     *   The text for the progressbar label.
     */
    setProgress: function (percentage, message, label) {
      if (percentage >= 0 && percentage <= 100) {
        $(this.element).find('div.progress__bar').css('width', percentage + '%');
        $(this.element).find('div.progress__percentage').html(percentage + '%');
      }
      $('div.progress__description', this.element).html(message);
      $('div.progress__label', this.element).html(label);
      if (this.updateCallback) {
        this.updateCallback(percentage, message, this);
      }
    },

    /**
     * Start monitoring progress via Ajax.
     *
     * @param {string} uri
     *   The URI to use for monitoring.
     * @param {number} delay
     *   The delay for calling the monitoring URI.
     */
    startMonitoring: function (uri, delay) {
      this.delay = delay;
      this.uri = uri;
      this.sendPing();
    },

    /**
     * Stop monitoring progress via Ajax.
     */
    stopMonitoring: function () {
      clearTimeout(this.timer);
      // This allows monitoring to be stopped from within the callback.
      this.uri = null;
    },

    /**
     * Request progress data from server.
     */
    sendPing: function () {
      if (this.timer) {
        clearTimeout(this.timer);
      }
      if (this.uri) {
        var pb = this;
        // When doing a post request, you need non-null data. Otherwise a
        // HTTP 411 or HTTP 406 (with Apache mod_security) error may result.
        var uri = this.uri;
        if (uri.indexOf('?') === -1) {
          uri += '?';
        }
        else {
          uri += '&';
        }
        uri += '_format=json';
        $.ajax({
          type: this.method,
          url: uri,
          data: '',
          dataType: 'json',
          success: function (progress) {
            // Display errors.
            if (progress.status === 0) {
              pb.displayError(progress.data);
              return;
            }
            // Update display.
            pb.setProgress(progress.percentage, progress.message, progress.label);
            // Schedule next timer.
            pb.timer = setTimeout(function () { pb.sendPing(); }, pb.delay);
          },
          error: function (xmlhttp) {
            var e = new Drupal.AjaxError(xmlhttp, pb.uri);
            pb.displayError('<pre>' + e.message + '</pre>');
          }
        });
      }
    },

    /**
     * Display errors on the page.
     *
     * @param {string} string
     *   The error message to show the user.
     */
    displayError: function (string) {
      var error = $('<div class="messages messages--error"></div>').html(string);
      $(this.element).before(error).hide();

      if (this.errorCallback) {
        this.errorCallback(this);
      }
    }
  });

})(jQuery, Drupal);
;
(function (Drupal) {

  'use strict';

  /**
   * Call picturefill so newly added responsive images are processed.
   */
  Drupal.behaviors.responsiveImageAJAX = {
    attach: function () {
      if (window.picturefill) {
        window.picturefill();
      }
    }
  };

})(Drupal);
;
/**
 * @file
 * Provides Ajax page updating via jQuery $.ajax.
 *
 * Ajax is a method of making a request via JavaScript while viewing an HTML
 * page. The request returns an array of commands encoded in JSON, which is
 * then executed to make any changes that are necessary to the page.
 *
 * Drupal uses this file to enhance form elements with `#ajax['url']` and
 * `#ajax['wrapper']` properties. If set, this file will automatically be
 * included to provide Ajax capabilities.
 */

(function ($, window, Drupal, drupalSettings) {

  'use strict';

  /**
   * Attaches the Ajax behavior to each Ajax form element.
   *
   * @type {Drupal~behavior}
   *
   * @prop {Drupal~behaviorAttach} attach
   *   Initialize all {@link Drupal.Ajax} objects declared in
   *   `drupalSettings.ajax` or initialize {@link Drupal.Ajax} objects from
   *   DOM elements having the `use-ajax-submit` or `use-ajax` css class.
   * @prop {Drupal~behaviorDetach} detach
   *   During `unload` remove all {@link Drupal.Ajax} objects related to
   *   the removed content.
   */
  Drupal.behaviors.AJAX = {
    attach: function (context, settings) {

      function loadAjaxBehavior(base) {
        var element_settings = settings.ajax[base];
        if (typeof element_settings.selector === 'undefined') {
          element_settings.selector = '#' + base;
        }
        $(element_settings.selector).once('drupal-ajax').each(function () {
          element_settings.element = this;
          element_settings.base = base;
          Drupal.ajax(element_settings);
        });
      }

      // Load all Ajax behaviors specified in the settings.
      for (var base in settings.ajax) {
        if (settings.ajax.hasOwnProperty(base)) {
          loadAjaxBehavior(base);
        }
      }

      // Bind Ajax behaviors to all items showing the class.
      $('.use-ajax').once('ajax').each(function () {
        var element_settings = {};
        // Clicked links look better with the throbber than the progress bar.
        element_settings.progress = {type: 'throbber'};

        // For anchor tags, these will go to the target of the anchor rather
        // than the usual location.
        var href = $(this).attr('href');
        if (href) {
          element_settings.url = href;
          element_settings.event = 'click';
        }
        element_settings.dialogType = $(this).data('dialog-type');
        element_settings.dialog = $(this).data('dialog-options');
        element_settings.base = $(this).attr('id');
        element_settings.element = this;
        Drupal.ajax(element_settings);
      });

      // This class means to submit the form to the action using Ajax.
      $('.use-ajax-submit').once('ajax').each(function () {
        var element_settings = {};

        // Ajax submits specified in this manner automatically submit to the
        // normal form action.
        element_settings.url = $(this.form).attr('action');
        // Form submit button clicks need to tell the form what was clicked so
        // it gets passed in the POST request.
        element_settings.setClick = true;
        // Form buttons use the 'click' event rather than mousedown.
        element_settings.event = 'click';
        // Clicked form buttons look better with the throbber than the progress
        // bar.
        element_settings.progress = {type: 'throbber'};
        element_settings.base = $(this).attr('id');
        element_settings.element = this;

        Drupal.ajax(element_settings);
      });
    },

    detach: function (context, settings, trigger) {
      if (trigger === 'unload') {
        Drupal.ajax.expired().forEach(function (instance) {
          // Set this to null and allow garbage collection to reclaim
          // the memory.
          Drupal.ajax.instances[instance.instanceIndex] = null;
        });
      }
    }
  };

  /**
   * Extends Error to provide handling for Errors in Ajax.
   *
   * @constructor
   *
   * @augments Error
   *
   * @param {XMLHttpRequest} xmlhttp
   *   XMLHttpRequest object used for the failed request.
   * @param {string} uri
   *   The URI where the error occurred.
   * @param {string} customMessage
   *   The custom message.
   */
  Drupal.AjaxError = function (xmlhttp, uri, customMessage) {

    var statusCode;
    var statusText;
    var pathText;
    var responseText;
    var readyStateText;
    if (xmlhttp.status) {
      statusCode = '\n' + Drupal.t('An AJAX HTTP error occurred.') + '\n' + Drupal.t('HTTP Result Code: !status', {'!status': xmlhttp.status});
    }
    else {
      statusCode = '\n' + Drupal.t('An AJAX HTTP request terminated abnormally.');
    }
    statusCode += '\n' + Drupal.t('Debugging information follows.');
    pathText = '\n' + Drupal.t('Path: !uri', {'!uri': uri});
    statusText = '';
    // In some cases, when statusCode === 0, xmlhttp.statusText may not be
    // defined. Unfortunately, testing for it with typeof, etc, doesn't seem to
    // catch that and the test causes an exception. So we need to catch the
    // exception here.
    try {
      statusText = '\n' + Drupal.t('StatusText: !statusText', {'!statusText': $.trim(xmlhttp.statusText)});
    }
    catch (e) {
      // Empty.
    }

    responseText = '';
    // Again, we don't have a way to know for sure whether accessing
    // xmlhttp.responseText is going to throw an exception. So we'll catch it.
    try {
      responseText = '\n' + Drupal.t('ResponseText: !responseText', {'!responseText': $.trim(xmlhttp.responseText)});
    }
    catch (e) {
      // Empty.
    }

    // Make the responseText more readable by stripping HTML tags and newlines.
    responseText = responseText.replace(/<("[^"]*"|'[^']*'|[^'">])*>/gi, '');
    responseText = responseText.replace(/[\n]+\s+/g, '\n');

    // We don't need readyState except for status == 0.
    readyStateText = xmlhttp.status === 0 ? ('\n' + Drupal.t('ReadyState: !readyState', {'!readyState': xmlhttp.readyState})) : '';

    customMessage = customMessage ? ('\n' + Drupal.t('CustomMessage: !customMessage', {'!customMessage': customMessage})) : '';

    /**
     * Formatted and translated error message.
     *
     * @type {string}
     */
    this.message = statusCode + pathText + statusText + customMessage + responseText + readyStateText;

    /**
     * Used by some browsers to display a more accurate stack trace.
     *
     * @type {string}
     */
    this.name = 'AjaxError';
  };

  Drupal.AjaxError.prototype = new Error();
  Drupal.AjaxError.prototype.constructor = Drupal.AjaxError;

  /**
   * Provides Ajax page updating via jQuery $.ajax.
   *
   * This function is designed to improve developer experience by wrapping the
   * initialization of {@link Drupal.Ajax} objects and storing all created
   * objects in the {@link Drupal.ajax.instances} array.
   *
   * @example
   * Drupal.behaviors.myCustomAJAXStuff = {
   *   attach: function (context, settings) {
   *
   *     var ajaxSettings = {
   *       url: 'my/url/path',
   *       // If the old version of Drupal.ajax() needs to be used those
   *       // properties can be added
   *       base: 'myBase',
   *       element: $(context).find('.someElement')
   *     };
   *
   *     var myAjaxObject = Drupal.ajax(ajaxSettings);
   *
   *     // Declare a new Ajax command specifically for this Ajax object.
   *     myAjaxObject.commands.insert = function (ajax, response, status) {
   *       $('#my-wrapper').append(response.data);
   *       alert('New content was appended to #my-wrapper');
   *     };
   *
   *     // This command will remove this Ajax object from the page.
   *     myAjaxObject.commands.destroyObject = function (ajax, response, status) {
   *       Drupal.ajax.instances[this.instanceIndex] = null;
   *     };
   *
   *     // Programmatically trigger the Ajax request.
   *     myAjaxObject.execute();
   *   }
   * };
   *
   * @param {object} settings
   *   The settings object passed to {@link Drupal.Ajax} constructor.
   * @param {string} [settings.base]
   *   Base is passed to {@link Drupal.Ajax} constructor as the 'base'
   *   parameter.
   * @param {HTMLElement} [settings.element]
   *   Element parameter of {@link Drupal.Ajax} constructor, element on which
   *   event listeners will be bound.
   *
   * @return {Drupal.Ajax}
   *   The created Ajax object.
   *
   * @see Drupal.AjaxCommands
   */
  Drupal.ajax = function (settings) {
    if (arguments.length !== 1) {
      throw new Error('Drupal.ajax() function must be called with one configuration object only');
    }
    // Map those config keys to variables for the old Drupal.ajax function.
    var base = settings.base || false;
    var element = settings.element || false;
    delete settings.base;
    delete settings.element;

    // By default do not display progress for ajax calls without an element.
    if (!settings.progress && !element) {
      settings.progress = false;
    }

    var ajax = new Drupal.Ajax(base, element, settings);
    ajax.instanceIndex = Drupal.ajax.instances.length;
    Drupal.ajax.instances.push(ajax);

    return ajax;
  };

  /**
   * Contains all created Ajax objects.
   *
   * @type {Array.<Drupal.Ajax|null>}
   */
  Drupal.ajax.instances = [];

  /**
   * List all objects where the associated element is not in the DOM
   *
   * This method ignores {@link Drupal.Ajax} objects not bound to DOM elements
   * when created with {@link Drupal.ajax}.
   *
   * @return {Array.<Drupal.Ajax>}
   *   The list of expired {@link Drupal.Ajax} objects.
   */
  Drupal.ajax.expired = function () {
    return Drupal.ajax.instances.filter(function (instance) {
      return instance && instance.element !== false && !document.body.contains(instance.element);
    });
  };

  /**
   * Settings for an Ajax object.
   *
   * @typedef {object} Drupal.Ajax~element_settings
   *
   * @prop {string} url
   *   Target of the Ajax request.
   * @prop {?string} [event]
   *   Event bound to settings.element which will trigger the Ajax request.
   * @prop {bool} [keypress=true]
   *   Triggers a request on keypress events.
   * @prop {?string} selector
   *   jQuery selector targeting the element to bind events to or used with
   *   {@link Drupal.AjaxCommands}.
   * @prop {string} [effect='none']
   *   Name of the jQuery method to use for displaying new Ajax content.
   * @prop {string|number} [speed='none']
   *   Speed with which to apply the effect.
   * @prop {string} [method]
   *   Name of the jQuery method used to insert new content in the targeted
   *   element.
   * @prop {object} [progress]
   *   Settings for the display of a user-friendly loader.
   * @prop {string} [progress.type='throbber']
   *   Type of progress element, core provides `'bar'`, `'throbber'` and
   *   `'fullscreen'`.
   * @prop {string} [progress.message=Drupal.t('Please wait...')]
   *   Custom message to be used with the bar indicator.
   * @prop {object} [submit]
   *   Extra data to be sent with the Ajax request.
   * @prop {bool} [submit.js=true]
   *   Allows the PHP side to know this comes from an Ajax request.
   * @prop {object} [dialog]
   *   Options for {@link Drupal.dialog}.
   * @prop {string} [dialogType]
   *   One of `'modal'` or `'dialog'`.
   * @prop {string} [prevent]
   *   List of events on which to stop default action and stop propagation.
   */

  /**
   * Ajax constructor.
   *
   * The Ajax request returns an array of commands encoded in JSON, which is
   * then executed to make any changes that are necessary to the page.
   *
   * Drupal uses this file to enhance form elements with `#ajax['url']` and
   * `#ajax['wrapper']` properties. If set, this file will automatically be
   * included to provide Ajax capabilities.
   *
   * @constructor
   *
   * @param {string} [base]
   *   Base parameter of {@link Drupal.Ajax} constructor
   * @param {HTMLElement} [element]
   *   Element parameter of {@link Drupal.Ajax} constructor, element on which
   *   event listeners will be bound.
   * @param {Drupal.Ajax~element_settings} element_settings
   *   Settings for this Ajax object.
   */
  Drupal.Ajax = function (base, element, element_settings) {
    var defaults = {
      event: element ? 'mousedown' : null,
      keypress: true,
      selector: base ? '#' + base : null,
      effect: 'none',
      speed: 'none',
      method: 'replaceWith',
      progress: {
        type: 'throbber',
        message: Drupal.t('Please wait...')
      },
      submit: {
        js: true
      }
    };

    $.extend(this, defaults, element_settings);

    /**
     * @type {Drupal.AjaxCommands}
     */
    this.commands = new Drupal.AjaxCommands();

    /**
     * @type {bool|number}
     */
    this.instanceIndex = false;

    // @todo Remove this after refactoring the PHP code to:
    //   - Call this 'selector'.
    //   - Include the '#' for ID-based selectors.
    //   - Support non-ID-based selectors.
    if (this.wrapper) {

      /**
       * @type {string}
       */
      this.wrapper = '#' + this.wrapper;
    }

    /**
     * @type {HTMLElement}
     */
    this.element = element;

    /**
     * @type {Drupal.Ajax~element_settings}
     */
    this.element_settings = element_settings;

    // If there isn't a form, jQuery.ajax() will be used instead, allowing us to
    // bind Ajax to links as well.
    if (this.element && this.element.form) {

      /**
       * @type {jQuery}
       */
      this.$form = $(this.element.form);
    }

    // If no Ajax callback URL was given, use the link href or form action.
    if (!this.url) {
      var $element = $(this.element);
      if ($element.is('a')) {
        this.url = $element.attr('href');
      }
      else if (this.element && element.form) {
        this.url = this.$form.attr('action');
      }
    }

    // Replacing 'nojs' with 'ajax' in the URL allows for an easy method to let
    // the server detect when it needs to degrade gracefully.
    // There are four scenarios to check for:
    // 1. /nojs/
    // 2. /nojs$ - The end of a URL string.
    // 3. /nojs? - Followed by a query (e.g. path/nojs?destination=foobar).
    // 4. /nojs# - Followed by a fragment (e.g.: path/nojs#myfragment).
    var originalUrl = this.url;

    /**
     * Processed Ajax URL.
     *
     * @type {string}
     */
    this.url = this.url.replace(/\/nojs(\/|$|\?|#)/g, '/ajax$1');
    // If the 'nojs' version of the URL is trusted, also trust the 'ajax'
    // version.
    if (drupalSettings.ajaxTrustedUrl[originalUrl]) {
      drupalSettings.ajaxTrustedUrl[this.url] = true;
    }

    // Set the options for the ajaxSubmit function.
    // The 'this' variable will not persist inside of the options object.
    var ajax = this;

    /**
     * Options for the jQuery.ajax function.
     *
     * @name Drupal.Ajax#options
     *
     * @type {object}
     *
     * @prop {string} url
     *   Ajax URL to be called.
     * @prop {object} data
     *   Ajax payload.
     * @prop {function} beforeSerialize
     *   Implement jQuery beforeSerialize function to call
     *   {@link Drupal.Ajax#beforeSerialize}.
     * @prop {function} beforeSubmit
     *   Implement jQuery beforeSubmit function to call
     *   {@link Drupal.Ajax#beforeSubmit}.
     * @prop {function} beforeSend
     *   Implement jQuery beforeSend function to call
     *   {@link Drupal.Ajax#beforeSend}.
     * @prop {function} success
     *   Implement jQuery success function to call
     *   {@link Drupal.Ajax#success}.
     * @prop {function} complete
     *   Implement jQuery success function to clean up ajax state and trigger an
     *   error if needed.
     * @prop {string} dataType='json'
     *   Type of the response expected.
     * @prop {string} type='POST'
     *   HTTP method to use for the Ajax request.
     */
    ajax.options = {
      url: ajax.url,
      data: ajax.submit,
      beforeSerialize: function (element_settings, options) {
        return ajax.beforeSerialize(element_settings, options);
      },
      beforeSubmit: function (form_values, element_settings, options) {
        ajax.ajaxing = true;
        return ajax.beforeSubmit(form_values, element_settings, options);
      },
      beforeSend: function (xmlhttprequest, options) {
        ajax.ajaxing = true;
        return ajax.beforeSend(xmlhttprequest, options);
      },
      success: function (response, status, xmlhttprequest) {
        // Sanity check for browser support (object expected).
        // When using iFrame uploads, responses must be returned as a string.
        if (typeof response === 'string') {
          response = $.parseJSON(response);
        }

        // Prior to invoking the response's commands, verify that they can be
        // trusted by checking for a response header. See
        // \Drupal\Core\EventSubscriber\AjaxResponseSubscriber for details.
        // - Empty responses are harmless so can bypass verification. This
        //   avoids an alert message for server-generated no-op responses that
        //   skip Ajax rendering.
        // - Ajax objects with trusted URLs (e.g., ones defined server-side via
        //   #ajax) can bypass header verification. This is especially useful
        //   for Ajax with multipart forms. Because IFRAME transport is used,
        //   the response headers cannot be accessed for verification.
        if (response !== null && !drupalSettings.ajaxTrustedUrl[ajax.url]) {
          if (xmlhttprequest.getResponseHeader('X-Drupal-Ajax-Token') !== '1') {
            var customMessage = Drupal.t('The response failed verification so will not be processed.');
            return ajax.error(xmlhttprequest, ajax.url, customMessage);
          }
        }

        return ajax.success(response, status);
      },
      complete: function (xmlhttprequest, status) {
        ajax.ajaxing = false;
        if (status === 'error' || status === 'parsererror') {
          return ajax.error(xmlhttprequest, ajax.url);
        }
      },
      dataType: 'json',
      type: 'POST'
    };

    if (element_settings.dialog) {
      ajax.options.data.dialogOptions = element_settings.dialog;
    }

    // Ensure that we have a valid URL by adding ? when no query parameter is
    // yet available, otherwise append using &.
    if (ajax.options.url.indexOf('?') === -1) {
      ajax.options.url += '?';
    }
    else {
      ajax.options.url += '&';
    }
    ajax.options.url += Drupal.ajax.WRAPPER_FORMAT + '=drupal_' + (element_settings.dialogType || 'ajax');

    // Bind the ajaxSubmit function to the element event.
    $(ajax.element).on(element_settings.event, function (event) {
      if (!drupalSettings.ajaxTrustedUrl[ajax.url] && !Drupal.url.isLocal(ajax.url)) {
        throw new Error(Drupal.t('The callback URL is not local and not trusted: !url', {'!url': ajax.url}));
      }
      return ajax.eventResponse(this, event);
    });

    // If necessary, enable keyboard submission so that Ajax behaviors
    // can be triggered through keyboard input as well as e.g. a mousedown
    // action.
    if (element_settings.keypress) {
      $(ajax.element).on('keypress', function (event) {
        return ajax.keypressResponse(this, event);
      });
    }

    // If necessary, prevent the browser default action of an additional event.
    // For example, prevent the browser default action of a click, even if the
    // Ajax behavior binds to mousedown.
    if (element_settings.prevent) {
      $(ajax.element).on(element_settings.prevent, false);
    }
  };

  /**
   * URL query attribute to indicate the wrapper used to render a request.
   *
   * The wrapper format determines how the HTML is wrapped, for example in a
   * modal dialog.
   *
   * @const {string}
   *
   * @default
   */
  Drupal.ajax.WRAPPER_FORMAT = '_wrapper_format';

  /**
   * Request parameter to indicate that a request is a Drupal Ajax request.
   *
   * @const {string}
   *
   * @default
   */
  Drupal.Ajax.AJAX_REQUEST_PARAMETER = '_drupal_ajax';

  /**
   * Execute the ajax request.
   *
   * Allows developers to execute an Ajax request manually without specifying
   * an event to respond to.
   *
   * @return {object}
   *   Returns the jQuery.Deferred object underlying the Ajax request. If
   *   pre-serialization fails, the Deferred will be returned in the rejected
   *   state.
   */
  Drupal.Ajax.prototype.execute = function () {
    // Do not perform another ajax command if one is already in progress.
    if (this.ajaxing) {
      return;
    }

    try {
      this.beforeSerialize(this.element, this.options);
      // Return the jqXHR so that external code can hook into the Deferred API.
      return $.ajax(this.options);
    }
    catch (e) {
      // Unset the ajax.ajaxing flag here because it won't be unset during
      // the complete response.
      this.ajaxing = false;
      window.alert('An error occurred while attempting to process ' + this.options.url + ': ' + e.message);
      // For consistency, return a rejected Deferred (i.e., jqXHR's superclass)
      // so that calling code can take appropriate action.
      return $.Deferred().reject();
    }
  };

  /**
   * Handle a key press.
   *
   * The Ajax object will, if instructed, bind to a key press response. This
   * will test to see if the key press is valid to trigger this event and
   * if it is, trigger it for us and prevent other keypresses from triggering.
   * In this case we're handling RETURN and SPACEBAR keypresses (event codes 13
   * and 32. RETURN is often used to submit a form when in a textfield, and
   * SPACE is often used to activate an element without submitting.
   *
   * @param {HTMLElement} element
   *   Element the event was triggered on.
   * @param {jQuery.Event} event
   *   Triggered event.
   */
  Drupal.Ajax.prototype.keypressResponse = function (element, event) {
    // Create a synonym for this to reduce code confusion.
    var ajax = this;

    // Detect enter key and space bar and allow the standard response for them,
    // except for form elements of type 'text', 'tel', 'number' and 'textarea',
    // where the spacebar activation causes inappropriate activation if
    // #ajax['keypress'] is TRUE. On a text-type widget a space should always
    // be a space.
    if (event.which === 13 || (event.which === 32 && element.type !== 'text' &&
      element.type !== 'textarea' && element.type !== 'tel' && element.type !== 'number')) {
      event.preventDefault();
      event.stopPropagation();
      $(ajax.element_settings.element).trigger(ajax.element_settings.event);
    }
  };

  /**
   * Handle an event that triggers an Ajax response.
   *
   * When an event that triggers an Ajax response happens, this method will
   * perform the actual Ajax call. It is bound to the event using
   * bind() in the constructor, and it uses the options specified on the
   * Ajax object.
   *
   * @param {HTMLElement} element
   *   Element the event was triggered on.
   * @param {jQuery.Event} event
   *   Triggered event.
   */
  Drupal.Ajax.prototype.eventResponse = function (element, event) {
    event.preventDefault();
    event.stopPropagation();

    // Create a synonym for this to reduce code confusion.
    var ajax = this;

    // Do not perform another Ajax command if one is already in progress.
    if (ajax.ajaxing) {
      return;
    }

    try {
      if (ajax.$form) {
        // If setClick is set, we must set this to ensure that the button's
        // value is passed.
        if (ajax.setClick) {
          // Mark the clicked button. 'form.clk' is a special variable for
          // ajaxSubmit that tells the system which element got clicked to
          // trigger the submit. Without it there would be no 'op' or
          // equivalent.
          element.form.clk = element;
        }

        ajax.$form.ajaxSubmit(ajax.options);
      }
      else {
        ajax.beforeSerialize(ajax.element, ajax.options);
        $.ajax(ajax.options);
      }
    }
    catch (e) {
      // Unset the ajax.ajaxing flag here because it won't be unset during
      // the complete response.
      ajax.ajaxing = false;
      window.alert('An error occurred while attempting to process ' + ajax.options.url + ': ' + e.message);
    }
  };

  /**
   * Handler for the form serialization.
   *
   * Runs before the beforeSend() handler (see below), and unlike that one, runs
   * before field data is collected.
   *
   * @param {object} [element]
   *   Ajax object's `element_settings`.
   * @param {object} options
   *   jQuery.ajax options.
   */
  Drupal.Ajax.prototype.beforeSerialize = function (element, options) {
    // Allow detaching behaviors to update field values before collecting them.
    // This is only needed when field values are added to the POST data, so only
    // when there is a form such that this.$form.ajaxSubmit() is used instead of
    // $.ajax(). When there is no form and $.ajax() is used, beforeSerialize()
    // isn't called, but don't rely on that: explicitly check this.$form.
    if (this.$form) {
      var settings = this.settings || drupalSettings;
      Drupal.detachBehaviors(this.$form.get(0), settings, 'serialize');
    }

    // Inform Drupal that this is an AJAX request.
    options.data[Drupal.Ajax.AJAX_REQUEST_PARAMETER] = 1;

    // Allow Drupal to return new JavaScript and CSS files to load without
    // returning the ones already loaded.
    // @see \Drupal\Core\Theme\AjaxBasePageNegotiator
    // @see \Drupal\Core\Asset\LibraryDependencyResolverInterface::getMinimalRepresentativeSubset()
    // @see system_js_settings_alter()
    var pageState = drupalSettings.ajaxPageState;
    options.data['ajax_page_state[theme]'] = pageState.theme;
    options.data['ajax_page_state[theme_token]'] = pageState.theme_token;
    options.data['ajax_page_state[libraries]'] = pageState.libraries;
  };

  /**
   * Modify form values prior to form submission.
   *
   * @param {Array.<object>} form_values
   *   Processed form values.
   * @param {jQuery} element
   *   The form node as a jQuery object.
   * @param {object} options
   *   jQuery.ajax options.
   */
  Drupal.Ajax.prototype.beforeSubmit = function (form_values, element, options) {
    // This function is left empty to make it simple to override for modules
    // that wish to add functionality here.
  };

  /**
   * Prepare the Ajax request before it is sent.
   *
   * @param {XMLHttpRequest} xmlhttprequest
   *   Native Ajax object.
   * @param {object} options
   *   jQuery.ajax options.
   */
  Drupal.Ajax.prototype.beforeSend = function (xmlhttprequest, options) {
    // For forms without file inputs, the jQuery Form plugin serializes the
    // form values, and then calls jQuery's $.ajax() function, which invokes
    // this handler. In this circumstance, options.extraData is never used. For
    // forms with file inputs, the jQuery Form plugin uses the browser's normal
    // form submission mechanism, but captures the response in a hidden IFRAME.
    // In this circumstance, it calls this handler first, and then appends
    // hidden fields to the form to submit the values in options.extraData.
    // There is no simple way to know which submission mechanism will be used,
    // so we add to extraData regardless, and allow it to be ignored in the
    // former case.
    if (this.$form) {
      options.extraData = options.extraData || {};

      // Let the server know when the IFRAME submission mechanism is used. The
      // server can use this information to wrap the JSON response in a
      // TEXTAREA, as per http://jquery.malsup.com/form/#file-upload.
      options.extraData.ajax_iframe_upload = '1';

      // The triggering element is about to be disabled (see below), but if it
      // contains a value (e.g., a checkbox, textfield, select, etc.), ensure
      // that value is included in the submission. As per above, submissions
      // that use $.ajax() are already serialized prior to the element being
      // disabled, so this is only needed for IFRAME submissions.
      var v = $.fieldValue(this.element);
      if (v !== null) {
        options.extraData[this.element.name] = v;
      }
    }

    // Disable the element that received the change to prevent user interface
    // interaction while the Ajax request is in progress. ajax.ajaxing prevents
    // the element from triggering a new request, but does not prevent the user
    // from changing its value.
    $(this.element).prop('disabled', true);

    if (!this.progress || !this.progress.type) {
      return;
    }

    // Insert progress indicator.
    var progressIndicatorMethod = 'setProgressIndicator' + this.progress.type.slice(0, 1).toUpperCase() + this.progress.type.slice(1).toLowerCase();
    if (progressIndicatorMethod in this && typeof this[progressIndicatorMethod] === 'function') {
      this[progressIndicatorMethod].call(this);
    }
  };

  /**
   * Sets the progress bar progress indicator.
   */
  Drupal.Ajax.prototype.setProgressIndicatorBar = function () {
    var progressBar = new Drupal.ProgressBar('ajax-progress-' + this.element.id, $.noop, this.progress.method, $.noop);
    if (this.progress.message) {
      progressBar.setProgress(-1, this.progress.message);
    }
    if (this.progress.url) {
      progressBar.startMonitoring(this.progress.url, this.progress.interval || 1500);
    }
    this.progress.element = $(progressBar.element).addClass('ajax-progress ajax-progress-bar');
    this.progress.object = progressBar;
    $(this.element).after(this.progress.element);
  };

  /**
   * Sets the throbber progress indicator.
   */
  Drupal.Ajax.prototype.setProgressIndicatorThrobber = function () {
    this.progress.element = $('<div class="ajax-progress ajax-progress-throbber"><div class="throbber">&nbsp;</div></div>');
    if (this.progress.message) {
      this.progress.element.find('.throbber').after('<div class="message">' + this.progress.message + '</div>');
    }
    $(this.element).after(this.progress.element);
  };

  /**
   * Sets the fullscreen progress indicator.
   */
  Drupal.Ajax.prototype.setProgressIndicatorFullscreen = function () {
    this.progress.element = $('<div class="ajax-progress ajax-progress-fullscreen">&nbsp;</div>');
    $('body').after(this.progress.element);
  };

  /**
   * Handler for the form redirection completion.
   *
   * @param {Array.<Drupal.AjaxCommands~commandDefinition>} response
   *   Drupal Ajax response.
   * @param {number} status
   *   XMLHttpRequest status.
   */
  Drupal.Ajax.prototype.success = function (response, status) {
    // Remove the progress element.
    if (this.progress.element) {
      $(this.progress.element).remove();
    }
    if (this.progress.object) {
      this.progress.object.stopMonitoring();
    }
    $(this.element).prop('disabled', false);

    // Save element's ancestors tree so if the element is removed from the dom
    // we can try to refocus one of its parents. Using addBack reverse the
    // result array, meaning that index 0 is the highest parent in the hierarchy
    // in this situation it is usually a <form> element.
    var elementParents = $(this.element).parents('[data-drupal-selector]').addBack().toArray();

    // Track if any command is altering the focus so we can avoid changing the
    // focus set by the Ajax command.
    var focusChanged = false;
    for (var i in response) {
      if (response.hasOwnProperty(i) && response[i].command && this.commands[response[i].command]) {
        this.commands[response[i].command](this, response[i], status);
        if (response[i].command === 'invoke' && response[i].method === 'focus') {
          focusChanged = true;
        }
      }
    }

    // If the focus hasn't be changed by the ajax commands, try to refocus the
    // triggering element or one of its parents if that element does not exist
    // anymore.
    if (!focusChanged && this.element && !$(this.element).data('disable-refocus')) {
      var target = false;

      for (var n = elementParents.length - 1; !target && n > 0; n--) {
        target = document.querySelector('[data-drupal-selector="' + elementParents[n].getAttribute('data-drupal-selector') + '"]');
      }

      if (target) {
        $(target).trigger('focus');
      }
    }

    // Reattach behaviors, if they were detached in beforeSerialize(). The
    // attachBehaviors() called on the new content from processing the response
    // commands is not sufficient, because behaviors from the entire form need
    // to be reattached.
    if (this.$form) {
      var settings = this.settings || drupalSettings;
      Drupal.attachBehaviors(this.$form.get(0), settings);
    }

    // Remove any response-specific settings so they don't get used on the next
    // call by mistake.
    this.settings = null;
  };

  /**
   * Build an effect object to apply an effect when adding new HTML.
   *
   * @param {object} response
   *   Drupal Ajax response.
   * @param {string} [response.effect]
   *   Override the default value of {@link Drupal.Ajax#element_settings}.
   * @param {string|number} [response.speed]
   *   Override the default value of {@link Drupal.Ajax#element_settings}.
   *
   * @return {object}
   *   Returns an object with `showEffect`, `hideEffect` and `showSpeed`
   *   properties.
   */
  Drupal.Ajax.prototype.getEffect = function (response) {
    var type = response.effect || this.effect;
    var speed = response.speed || this.speed;

    var effect = {};
    if (type === 'none') {
      effect.showEffect = 'show';
      effect.hideEffect = 'hide';
      effect.showSpeed = '';
    }
    else if (type === 'fade') {
      effect.showEffect = 'fadeIn';
      effect.hideEffect = 'fadeOut';
      effect.showSpeed = speed;
    }
    else {
      effect.showEffect = type + 'Toggle';
      effect.hideEffect = type + 'Toggle';
      effect.showSpeed = speed;
    }

    return effect;
  };

  /**
   * Handler for the form redirection error.
   *
   * @param {object} xmlhttprequest
   *   Native XMLHttpRequest object.
   * @param {string} uri
   *   Ajax Request URI.
   * @param {string} [customMessage]
   *   Extra message to print with the Ajax error.
   */
  Drupal.Ajax.prototype.error = function (xmlhttprequest, uri, customMessage) {
    // Remove the progress element.
    if (this.progress.element) {
      $(this.progress.element).remove();
    }
    if (this.progress.object) {
      this.progress.object.stopMonitoring();
    }
    // Undo hide.
    $(this.wrapper).show();
    // Re-enable the element.
    $(this.element).prop('disabled', false);
    // Reattach behaviors, if they were detached in beforeSerialize().
    if (this.$form) {
      var settings = this.settings || drupalSettings;
      Drupal.attachBehaviors(this.$form.get(0), settings);
    }
    throw new Drupal.AjaxError(xmlhttprequest, uri, customMessage);
  };

  /**
   * @typedef {object} Drupal.AjaxCommands~commandDefinition
   *
   * @prop {string} command
   * @prop {string} [method]
   * @prop {string} [selector]
   * @prop {string} [data]
   * @prop {object} [settings]
   * @prop {bool} [asterisk]
   * @prop {string} [text]
   * @prop {string} [title]
   * @prop {string} [url]
   * @prop {object} [argument]
   * @prop {string} [name]
   * @prop {string} [value]
   * @prop {string} [old]
   * @prop {string} [new]
   * @prop {bool} [merge]
   * @prop {Array} [args]
   *
   * @see Drupal.AjaxCommands
   */

  /**
   * Provide a series of commands that the client will perform.
   *
   * @constructor
   */
  Drupal.AjaxCommands = function () {};
  Drupal.AjaxCommands.prototype = {

    /**
     * Command to insert new content into the DOM.
     *
     * @param {Drupal.Ajax} ajax
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {string} response.data
     *   The data to use with the jQuery method.
     * @param {string} [response.method]
     *   The jQuery DOM manipulation method to be used.
     * @param {string} [response.selector]
     *   A optional jQuery selector string.
     * @param {object} [response.settings]
     *   An optional array of settings that will be used.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    insert: function (ajax, response, status) {
      // Get information from the response. If it is not there, default to
      // our presets.
      var $wrapper = response.selector ? $(response.selector) : $(ajax.wrapper);
      var method = response.method || ajax.method;
      var effect = ajax.getEffect(response);
      var settings;

      // We don't know what response.data contains: it might be a string of text
      // without HTML, so don't rely on jQuery correctly interpreting
      // $(response.data) as new HTML rather than a CSS selector. Also, if
      // response.data contains top-level text nodes, they get lost with either
      // $(response.data) or $('<div></div>').replaceWith(response.data).
      var $new_content_wrapped = $('<div></div>').html(response.data);
      var $new_content = $new_content_wrapped.contents();

      // For legacy reasons, the effects processing code assumes that
      // $new_content consists of a single top-level element. Also, it has not
      // been sufficiently tested whether attachBehaviors() can be successfully
      // called with a context object that includes top-level text nodes.
      // However, to give developers full control of the HTML appearing in the
      // page, and to enable Ajax content to be inserted in places where <div>
      // elements are not allowed (e.g., within <table>, <tr>, and <span>
      // parents), we check if the new content satisfies the requirement
      // of a single top-level element, and only use the container <div> created
      // above when it doesn't. For more information, please see
      // https://www.drupal.org/node/736066.
      if ($new_content.length !== 1 || $new_content.get(0).nodeType !== 1) {
        $new_content = $new_content_wrapped;
      }

      // If removing content from the wrapper, detach behaviors first.
      switch (method) {
        case 'html':
        case 'replaceWith':
        case 'replaceAll':
        case 'empty':
        case 'remove':
          settings = response.settings || ajax.settings || drupalSettings;
          Drupal.detachBehaviors($wrapper.get(0), settings);
      }

      // Add the new content to the page.
      $wrapper[method]($new_content);

      // Immediately hide the new content if we're using any effects.
      if (effect.showEffect !== 'show') {
        $new_content.hide();
      }

      // Determine which effect to use and what content will receive the
      // effect, then show the new content.
      if ($new_content.find('.ajax-new-content').length > 0) {
        $new_content.find('.ajax-new-content').hide();
        $new_content.show();
        $new_content.find('.ajax-new-content')[effect.showEffect](effect.showSpeed);
      }
      else if (effect.showEffect !== 'show') {
        $new_content[effect.showEffect](effect.showSpeed);
      }

      // Attach all JavaScript behaviors to the new content, if it was
      // successfully added to the page, this if statement allows
      // `#ajax['wrapper']` to be optional.
      if ($new_content.parents('html').length > 0) {
        // Apply any settings from the returned JSON if available.
        settings = response.settings || ajax.settings || drupalSettings;
        Drupal.attachBehaviors($new_content.get(0), settings);
      }
    },

    /**
     * Command to remove a chunk from the page.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {string} response.selector
     *   A jQuery selector string.
     * @param {object} [response.settings]
     *   An optional array of settings that will be used.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    remove: function (ajax, response, status) {
      var settings = response.settings || ajax.settings || drupalSettings;
      $(response.selector).each(function () {
        Drupal.detachBehaviors(this, settings);
      })
        .remove();
    },

    /**
     * Command to mark a chunk changed.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The JSON response object from the Ajax request.
     * @param {string} response.selector
     *   A jQuery selector string.
     * @param {bool} [response.asterisk]
     *   An optional CSS selector. If specified, an asterisk will be
     *   appended to the HTML inside the provided selector.
     * @param {number} [status]
     *   The request status.
     */
    changed: function (ajax, response, status) {
      var $element = $(response.selector);
      if (!$element.hasClass('ajax-changed')) {
        $element.addClass('ajax-changed');
        if (response.asterisk) {
          $element.find(response.asterisk).append(' <abbr class="ajax-changed" title="' + Drupal.t('Changed') + '">*</abbr> ');
        }
      }
    },

    /**
     * Command to provide an alert.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The JSON response from the Ajax request.
     * @param {string} response.text
     *   The text that will be displayed in an alert dialog.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    alert: function (ajax, response, status) {
      window.alert(response.text, response.title);
    },

    /**
     * Command to set the window.location, redirecting the browser.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {string} response.url
     *   The URL to redirect to.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    redirect: function (ajax, response, status) {
      window.location = response.url;
    },

    /**
     * Command to provide the jQuery css() function.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {string} response.selector
     *   A jQuery selector string.
     * @param {object} response.argument
     *   An array of key/value pairs to set in the CSS for the selector.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    css: function (ajax, response, status) {
      $(response.selector).css(response.argument);
    },

    /**
     * Command to set the settings used for other commands in this response.
     *
     * This method will also remove expired `drupalSettings.ajax` settings.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {bool} response.merge
     *   Determines whether the additional settings should be merged to the
     *   global settings.
     * @param {object} response.settings
     *   Contains additional settings to add to the global settings.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    settings: function (ajax, response, status) {
      var ajaxSettings = drupalSettings.ajax;

      // Clean up drupalSettings.ajax.
      if (ajaxSettings) {
        Drupal.ajax.expired().forEach(function (instance) {
          // If the Ajax object has been created through drupalSettings.ajax
          // it will have a selector. When there is no selector the object
          // has been initialized with a special class name picked up by the
          // Ajax behavior.

          if (instance.selector) {
            var selector = instance.selector.replace('#', '');
            if (selector in ajaxSettings) {
              delete ajaxSettings[selector];
            }
          }
        });
      }

      if (response.merge) {
        $.extend(true, drupalSettings, response.settings);
      }
      else {
        ajax.settings = response.settings;
      }
    },

    /**
     * Command to attach data using jQuery's data API.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {string} response.name
     *   The name or key (in the key value pair) of the data attached to this
     *   selector.
     * @param {string} response.selector
     *   A jQuery selector string.
     * @param {string|object} response.value
     *   The value of to be attached.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    data: function (ajax, response, status) {
      $(response.selector).data(response.name, response.value);
    },

    /**
     * Command to apply a jQuery method.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {Array} response.args
     *   An array of arguments to the jQuery method, if any.
     * @param {string} response.method
     *   The jQuery method to invoke.
     * @param {string} response.selector
     *   A jQuery selector string.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    invoke: function (ajax, response, status) {
      var $element = $(response.selector);
      $element[response.method].apply($element, response.args);
    },

    /**
     * Command to restripe a table.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {string} response.selector
     *   A jQuery selector string.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    restripe: function (ajax, response, status) {
      // :even and :odd are reversed because jQuery counts from 0 and
      // we count from 1, so we're out of sync.
      // Match immediate children of the parent element to allow nesting.
      $(response.selector).find('> tbody > tr:visible, > tr:visible')
        .removeClass('odd even')
        .filter(':even').addClass('odd').end()
        .filter(':odd').addClass('even');
    },

    /**
     * Command to update a form's build ID.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {string} response.old
     *   The old form build ID.
     * @param {string} response.new
     *   The new form build ID.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    update_build_id: function (ajax, response, status) {
      $('input[name="form_build_id"][value="' + response.old + '"]').val(response.new);
    },

    /**
     * Command to add css.
     *
     * Uses the proprietary addImport method if available as browsers which
     * support that method ignore @import statements in dynamically added
     * stylesheets.
     *
     * @param {Drupal.Ajax} [ajax]
     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
     * @param {object} response
     *   The response from the Ajax request.
     * @param {string} response.data
     *   A string that contains the styles to be added.
     * @param {number} [status]
     *   The XMLHttpRequest status.
     */
    add_css: function (ajax, response, status) {
      // Add the styles in the normal way.
      $('head').prepend(response.data);
      // Add imports in the styles using the addImport method if available.
      var match;
      var importMatch = /^@import url\("(.*)"\);$/igm;
      if (document.styleSheets[0].addImport && importMatch.test(response.data)) {
        importMatch.lastIndex = 0;
        do {
          match = importMatch.exec(response.data);
          document.styleSheets[0].addImport(match[1]);
        } while (match);
      }
    }
  };

})(jQuery, window, Drupal, drupalSettings);
;
/**
 * @file
 * Some basic behaviors and utility functions for Views.
 */

(function ($, Drupal, drupalSettings) {

  'use strict';

  /**
   * @namespace
   */
  Drupal.Views = {};

  /**
   * Helper function to parse a querystring.
   *
   * @param {string} query
   *   The querystring to parse.
   *
   * @return {object}
   *   A map of query parameters.
   */
  Drupal.Views.parseQueryString = function (query) {
    var args = {};
    var pos = query.indexOf('?');
    if (pos !== -1) {
      query = query.substring(pos + 1);
    }
    var pair;
    var pairs = query.split('&');
    for (var i = 0; i < pairs.length; i++) {
      pair = pairs[i].split('=');
      // Ignore the 'q' path argument, if present.
      if (pair[0] !== 'q' && pair[1]) {
        args[decodeURIComponent(pair[0].replace(/\+/g, ' '))] = decodeURIComponent(pair[1].replace(/\+/g, ' '));
      }
    }
    return args;
  };

  /**
   * Helper function to return a view's arguments based on a path.
   *
   * @param {string} href
   *   The href to check.
   * @param {string} viewPath
   *   The views path to check.
   *
   * @return {object}
   *   An object containing `view_args` and `view_path`.
   */
  Drupal.Views.parseViewArgs = function (href, viewPath) {
    var returnObj = {};
    var path = Drupal.Views.getPath(href);
    // Get viewPath url without baseUrl portion.
    var viewHref = Drupal.url(viewPath).substring(drupalSettings.path.baseUrl.length);
    // Ensure we have a correct path.
    if (viewHref && path.substring(0, viewHref.length + 1) === viewHref + '/') {
      returnObj.view_args = decodeURIComponent(path.substring(viewHref.length + 1, path.length));
      returnObj.view_path = path;
    }
    return returnObj;
  };

  /**
   * Strip off the protocol plus domain from an href.
   *
   * @param {string} href
   *   The href to strip.
   *
   * @return {string}
   *   The href without the protocol and domain.
   */
  Drupal.Views.pathPortion = function (href) {
    // Remove e.g. http://example.com if present.
    var protocol = window.location.protocol;
    if (href.substring(0, protocol.length) === protocol) {
      // 2 is the length of the '//' that normally follows the protocol.
      href = href.substring(href.indexOf('/', protocol.length + 2));
    }
    return href;
  };

  /**
   * Return the Drupal path portion of an href.
   *
   * @param {string} href
   *   The href to check.
   *
   * @return {string}
   *   An internal path.
   */
  Drupal.Views.getPath = function (href) {
    href = Drupal.Views.pathPortion(href);
    href = href.substring(drupalSettings.path.baseUrl.length, href.length);
    // 3 is the length of the '?q=' added to the url without clean urls.
    if (href.substring(0, 3) === '?q=') {
      href = href.substring(3, href.length);
    }
    var chars = ['#', '?', '&'];
    for (var i = 0; i < chars.length; i++) {
      if (href.indexOf(chars[i]) > -1) {
        href = href.substr(0, href.indexOf(chars[i]));
      }
    }
    return href;
  };

})(jQuery, Drupal, drupalSettings);
;
/**
 * @file
 * Handles AJAX fetching of views, including filter submission and response.
 */

(function ($, Drupal, drupalSettings) {

  'use strict';

  /**
   * Attaches the AJAX behavior to exposed filters forms and key View links.
   *
   * @type {Drupal~behavior}
   *
   * @prop {Drupal~behaviorAttach} attach
   *   Attaches ajaxView functionality to relevant elements.
   */
  Drupal.behaviors.ViewsAjaxView = {};
  Drupal.behaviors.ViewsAjaxView.attach = function () {
    if (drupalSettings && drupalSettings.views && drupalSettings.views.ajaxViews) {
      var ajaxViews = drupalSettings.views.ajaxViews;
      for (var i in ajaxViews) {
        if (ajaxViews.hasOwnProperty(i)) {
          Drupal.views.instances[i] = new Drupal.views.ajaxView(ajaxViews[i]);
        }
      }
    }
  };

  /**
   * @namespace
   */
  Drupal.views = {};

  /**
   * @type {object.<string, Drupal.views.ajaxView>}
   */
  Drupal.views.instances = {};

  /**
   * Javascript object for a certain view.
   *
   * @constructor
   *
   * @param {object} settings
   *   Settings object for the ajax view.
   * @param {string} settings.view_dom_id
   *   The DOM id of the view.
   */
  Drupal.views.ajaxView = function (settings) {
    var selector = '.js-view-dom-id-' + settings.view_dom_id;
    this.$view = $(selector);

    // Retrieve the path to use for views' ajax.
    var ajax_path = drupalSettings.views.ajax_path;

    // If there are multiple views this might've ended up showing up multiple
    // times.
    if (ajax_path.constructor.toString().indexOf('Array') !== -1) {
      ajax_path = ajax_path[0];
    }

    // Check if there are any GET parameters to send to views.
    var queryString = window.location.search || '';
    if (queryString !== '') {
      // Remove the question mark and Drupal path component if any.
      queryString = queryString.slice(1).replace(/q=[^&]+&?|&?render=[^&]+/, '');
      if (queryString !== '') {
        // If there is a '?' in ajax_path, clean url are on and & should be
        // used to add parameters.
        queryString = ((/\?/.test(ajax_path)) ? '&' : '?') + queryString;
      }
    }

    this.element_settings = {
      url: ajax_path + queryString,
      submit: settings,
      setClick: true,
      event: 'click',
      selector: selector,
      progress: {type: 'fullscreen'}
    };

    this.settings = settings;

    // Add the ajax to exposed forms.
    this.$exposed_form = $('form#views-exposed-form-' + settings.view_name.replace(/_/g, '-') + '-' + settings.view_display_id.replace(/_/g, '-'));
    this.$exposed_form.once('exposed-form').each($.proxy(this.attachExposedFormAjax, this));

    // Add the ajax to pagers.
    this.$view
      // Don't attach to nested views. Doing so would attach multiple behaviors
      // to a given element.
      .filter($.proxy(this.filterNestedViews, this))
      .once('ajax-pager').each($.proxy(this.attachPagerAjax, this));

    // Add a trigger to update this view specifically. In order to trigger a
    // refresh use the following code.
    //
    // @code
    // $('.view-name').trigger('RefreshView');
    // @endcode
    var self_settings = $.extend({}, this.element_settings, {
      event: 'RefreshView',
      base: this.selector,
      element: this.$view.get(0)
    });
    this.refreshViewAjax = Drupal.ajax(self_settings);
  };

  /**
   * @method
   */
  Drupal.views.ajaxView.prototype.attachExposedFormAjax = function () {
    var that = this;
    this.exposedFormAjax = [];
    // Exclude the reset buttons so no AJAX behaviours are bound. Many things
    // break during the form reset phase if using AJAX.
    $('input[type=submit], input[type=image]', this.$exposed_form).not('[data-drupal-selector=edit-reset]').each(function (index) {
      var self_settings = $.extend({}, that.element_settings, {
        base: $(this).attr('id'),
        element: this
      });
      that.exposedFormAjax[index] = Drupal.ajax(self_settings);
    });
  };

  /**
   * @return {bool}
   *   If there is at least one parent with a view class return false.
   */
  Drupal.views.ajaxView.prototype.filterNestedViews = function () {
    // If there is at least one parent with a view class, this view
    // is nested (e.g., an attachment). Bail.
    return !this.$view.parents('.view').length;
  };

  /**
   * Attach the ajax behavior to each link.
   */
  Drupal.views.ajaxView.prototype.attachPagerAjax = function () {
    this.$view.find('ul.js-pager__items > li > a, th.views-field a, .attachment .views-summary a')
      .each($.proxy(this.attachPagerLinkAjax, this));
  };

  /**
   * Attach the ajax behavior to a singe link.
   *
   * @param {string} [id]
   *   The ID of the link.
   * @param {HTMLElement} link
   *   The link element.
   */
  Drupal.views.ajaxView.prototype.attachPagerLinkAjax = function (id, link) {
    var $link = $(link);
    var viewData = {};
    var href = $link.attr('href');
    // Construct an object using the settings defaults and then overriding
    // with data specific to the link.
    $.extend(
      viewData,
      this.settings,
      Drupal.Views.parseQueryString(href),
      // Extract argument data from the URL.
      Drupal.Views.parseViewArgs(href, this.settings.view_base_path)
    );

    var self_settings = $.extend({}, this.element_settings, {
      submit: viewData,
      base: false,
      element: link
    });
    this.pagerAjax = Drupal.ajax(self_settings);
  };

  /**
   * Views scroll to top ajax command.
   *
   * @param {Drupal.Ajax} [ajax]
   *   A {@link Drupal.ajax} object.
   * @param {object} response
   *   Ajax response.
   * @param {string} response.selector
   *   Selector to use.
   */
  Drupal.AjaxCommands.prototype.viewsScrollTop = function (ajax, response) {
    // Scroll to the top of the view. This will allow users
    // to browse newly loaded content after e.g. clicking a pager
    // link.
    var offset = $(response.selector).offset();
    // We can't guarantee that the scrollable object should be
    // the body, as the view could be embedded in something
    // more complex such as a modal popup. Recurse up the DOM
    // and scroll the first element that has a non-zero top.
    var scrollTarget = response.selector;
    while ($(scrollTarget).scrollTop() === 0 && $(scrollTarget).parent()) {
      scrollTarget = $(scrollTarget).parent();
    }
    // Only scroll upward.
    if (offset.top - 10 < $(scrollTarget).scrollTop()) {
      $(scrollTarget).animate({scrollTop: (offset.top - 10)}, 500);
    }
  };

})(jQuery, Drupal, drupalSettings);
;
!function(a,b,c){"use strict";Drupal.behaviors.atBP={attach:function(a,d){function e(a,b){enquire.register(b,{match:function(){c.body.classList.add("bp--"+a)},unmatch:function(){c.body.classList.remove("bp--"+a)}})}if(b.matchMedia("only screen").matches){var f=d.ajaxPageState.theme,g=d[f].at_breakpoints;for(var h in g)g.hasOwnProperty(h)&&e(h.split("_").join("-"),g[h].mediaquery)}}}}(jQuery,window,document);