/**
 * @file
 * CKEditor implementation of {@link Drupal.editors} API.
 */

(function (Drupal, debounce, CKEDITOR, $) {

  'use strict';

  /**
   * @namespace
   */
  Drupal.editors.ckeditor = {

    /**
     * Editor attach callback.
     *
     * @param {HTMLElement} element
     *   The element to attach the editor to.
     * @param {string} format
     *   The text format for the editor.
     *
     * @return {bool}
     *   Whether the call to `CKEDITOR.replace()` created an editor or not.
     */
    attach: function (element, format) {
      this._loadExternalPlugins(format);
      // Also pass settings that are Drupal-specific.
      format.editorSettings.drupal = {
        format: format.format
      };

      // Set a title on the CKEditor instance that includes the text field's
      // label so that screen readers say something that is understandable
      // for end users.
      var label = $('label[for=' + element.getAttribute('id') + ']').html();
      format.editorSettings.title = Drupal.t('Rich Text Editor, !label field', {'!label': label});

      return !!CKEDITOR.replace(element, format.editorSettings);
    },

    /**
     * Editor detach callback.
     *
     * @param {HTMLElement} element
     *   The element to detach the editor from.
     * @param {string} format
     *   The text format used for the editor.
     * @param {string} trigger
     *   The event trigger for the detach.
     *
     * @return {bool}
     *   Whether the call to `CKEDITOR.dom.element.get(element).getEditor()`
     *   found an editor or not.
     */
    detach: function (element, format, trigger) {
      var editor = CKEDITOR.dom.element.get(element).getEditor();
      if (editor) {
        if (trigger === 'serialize') {
          editor.updateElement();
        }
        else {
          editor.destroy();
          element.removeAttribute('contentEditable');
        }
      }
      return !!editor;
    },

    /**
     * Reacts on a change in the editor element.
     *
     * @param {HTMLElement} element
     *   The element where the change occured.
     * @param {function} callback
     *   Callback called with the value of the editor.
     *
     * @return {bool}
     *   Whether the call to `CKEDITOR.dom.element.get(element).getEditor()`
     *   found an editor or not.
     */
    onChange: function (element, callback) {
      var editor = CKEDITOR.dom.element.get(element).getEditor();
      if (editor) {
        editor.on('change', debounce(function () {
          callback(editor.getData());
        }, 400));
      }
      return !!editor;
    },

    /**
     * Attaches an inline editor to a DOM element.
     *
     * @param {HTMLElement} element
     *   The element to attach the editor to.
     * @param {object} format
     *   The text format used in the editor.
     * @param {string} [mainToolbarId]
     *   The id attribute for the main editor toolbar, if any.
     * @param {string} [floatedToolbarId]
     *   The id attribute for the floated editor toolbar, if any.
     *
     * @return {bool}
     *   Whether the call to `CKEDITOR.replace()` created an editor or not.
     */
    attachInlineEditor: function (element, format, mainToolbarId, floatedToolbarId) {
      this._loadExternalPlugins(format);
      // Also pass settings that are Drupal-specific.
      format.editorSettings.drupal = {
        format: format.format
      };

      var settings = $.extend(true, {}, format.editorSettings);

      // If a toolbar is already provided for "true WYSIWYG" (in-place editing),
      // then use that toolbar instead: override the default settings to render
      // CKEditor UI's top toolbar into mainToolbar, and don't render the bottom
      // toolbar at all. (CKEditor doesn't need a floated toolbar.)
      if (mainToolbarId) {
        var settingsOverride = {
          extraPlugins: 'sharedspace',
          removePlugins: 'floatingspace,elementspath',
          sharedSpaces: {
            top: mainToolbarId
          }
        };

        // Find the "Source" button, if any, and replace it with "Sourcedialog".
        // (The 'sourcearea' plugin only works in CKEditor's iframe mode.)
        var sourceButtonFound = false;
        for (var i = 0; !sourceButtonFound && i < settings.toolbar.length; i++) {
          if (settings.toolbar[i] !== '/') {
            for (var j = 0; !sourceButtonFound && j < settings.toolbar[i].items.length; j++) {
              if (settings.toolbar[i].items[j] === 'Source') {
                sourceButtonFound = true;
                // Swap sourcearea's "Source" button for sourcedialog's.
                settings.toolbar[i].items[j] = 'Sourcedialog';
                settingsOverride.extraPlugins += ',sourcedialog';
                settingsOverride.removePlugins += ',sourcearea';
              }
            }
          }
        }

        settings.extraPlugins += ',' + settingsOverride.extraPlugins;
        settings.removePlugins += ',' + settingsOverride.removePlugins;
        settings.sharedSpaces = settingsOverride.sharedSpaces;
      }

      // CKEditor requires an element to already have the contentEditable
      // attribute set to "true", otherwise it won't attach an inline editor.
      element.setAttribute('contentEditable', 'true');

      return !!CKEDITOR.inline(element, settings);
    },

    /**
     * Loads the required external plugins for the editor.
     *
     * @param {object} format
     *   The text format used in the editor.
     */
    _loadExternalPlugins: function (format) {
      var externalPlugins = format.editorSettings.drupalExternalPlugins;
      // Register and load additional CKEditor plugins as necessary.
      if (externalPlugins) {
        for (var pluginName in externalPlugins) {
          if (externalPlugins.hasOwnProperty(pluginName)) {
            CKEDITOR.plugins.addExternal(pluginName, externalPlugins[pluginName], '');
          }
        }
        delete format.editorSettings.drupalExternalPlugins;
      }
    }

  };

  Drupal.ckeditor = {

    /**
     * Variable storing the current dialog's save callback.
     *
     * @type {?function}
     */
    saveCallback: null,

    /**
     * Open a dialog for a Drupal-based plugin.
     *
     * This dynamically loads jQuery UI (if necessary) using the Drupal AJAX
     * framework, then opens a dialog at the specified Drupal path.
     *
     * @param {CKEditor} editor
     *   The CKEditor instance that is opening the dialog.
     * @param {string} url
     *   The URL that contains the contents of the dialog.
     * @param {object} existingValues
     *   Existing values that will be sent via POST to the url for the dialog
     *   contents.
     * @param {function} saveCallback
     *   A function to be called upon saving the dialog.
     * @param {object} dialogSettings
     *   An object containing settings to be passed to the jQuery UI.
     */
    openDialog: function (editor, url, existingValues, saveCallback, dialogSettings) {
      // Locate a suitable place to display our loading indicator.
      var $target = $(editor.container.$);
      if (editor.elementMode === CKEDITOR.ELEMENT_MODE_REPLACE) {
        $target = $target.find('.cke_contents');
      }

      // Remove any previous loading indicator.
      $target.css('position', 'relative').find('.ckeditor-dialog-loading').remove();

      // Add a consistent dialog class.
      var classes = dialogSettings.dialogClass ? dialogSettings.dialogClass.split(' ') : [];
      classes.push('ui-dialog--narrow');
      dialogSettings.dialogClass = classes.join(' ');
      dialogSettings.autoResize = window.matchMedia('(min-width: 600px)').matches;
      dialogSettings.width = 'auto';

      // Add a "Loading…" message, hide it underneath the CKEditor toolbar,
      // create a Drupal.Ajax instance to load the dialog and trigger it.
      var $content = $('<div class="ckeditor-dialog-loading"><span style="top: -40px;" class="ckeditor-dialog-loading-link">' + Drupal.t('Loading...') + '</span></div>');
      $content.appendTo($target);

      var ckeditorAjaxDialog = Drupal.ajax({
        dialog: dialogSettings,
        dialogType: 'modal',
        selector: '.ckeditor-dialog-loading-link',
        url: url,
        progress: {type: 'throbber'},
        submit: {
          editor_object: existingValues
        }
      });
      ckeditorAjaxDialog.execute();

      // After a short delay, show "Loading…" message.
      window.setTimeout(function () {
        $content.find('span').animate({top: '0px'});
      }, 1000);

      // Store the save callback to be executed when this dialog is closed.
      Drupal.ckeditor.saveCallback = saveCallback;
    }
  };

  // Moves the dialog to the top of the CKEDITOR stack.
  $(window).on('dialogcreate', function (e, dialog, $element, settings) {
    $('.ui-dialog--narrow').css('zIndex', CKEDITOR.config.baseFloatZIndex + 1);
  });

  // Respond to new dialogs that are opened by CKEditor, closing the AJAX loader.
  $(window).on('dialog:beforecreate', function (e, dialog, $element, settings) {
    $('.ckeditor-dialog-loading').animate({top: '-40px'}, function () {
      $(this).remove();
    });
  });

  // Respond to dialogs that are saved, sending data back to CKEditor.
  $(window).on('editor:dialogsave', function (e, values) {
    if (Drupal.ckeditor.saveCallback) {
      Drupal.ckeditor.saveCallback(values);
    }
  });

  // Respond to dialogs that are closed, removing the current save handler.
  $(window).on('dialog:afterclose', function (e, dialog, $element) {
    if (Drupal.ckeditor.saveCallback) {
      Drupal.ckeditor.saveCallback = null;
    }
  });

})(Drupal, Drupal.debounce, CKEDITOR, jQuery);
;
/**
 * @file
 * Progress bar.
 */

(function ($, Drupal) {

  'use strict';

  /**
   * Theme function for the progress bar.
   *
   * @param {string} id
   *
   * @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
   * @param {function} updateCallback
   * @param {string} method
   * @param {function} errorCallback
   */
  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
     * @param {string} message
     * @param {string} 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
     * @param {number} delay
     */
    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
     */
    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);
;
/**
 * @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}
   */
  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.
        if ($(this).attr('href')) {
          element_settings.url = $(this).attr('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);
      });
    }
  };

  /**
   * 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}
   *
   * @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>}
   */
  Drupal.ajax.instances = [];

  /**
   * 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 {object} element_settings
   * @param {string} element_settings.url
   *   Target of the Ajax request.
   * @param {string} [element_settings.event]
   *   Event bound to settings.element which will trigger the Ajax request.
   * @param {string} [element_settings.method]
   *   Name of the jQuery method used to insert new content in the targeted
   *   element.
   */
  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();
    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 {object}
     */
    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;
    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 ajaxSubmit function.
     *
     * @name Drupal.Ajax#options
     *
     * @type {object}
     *
     * @prop {string} url
     * @prop {object} data
     * @prop {function} beforeSerialize
     * @prop {function} beforeSubmit
     * @prop {function} beforeSend
     * @prop {function} success
     * @prop {function} complete
     * @prop {string} dataType
     * @prop {object} accepts
     * @prop {string} accepts.json
     * @prop {string} type
     */
    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}
   */
  Drupal.ajax.WRAPPER_FORMAT = '_wrapper_format';

  /**
   * Request parameter to indicate that a request is a Drupal Ajax request.
   *
   * @const
   */
  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.
   */
  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);
      $.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);
    }
  };

  /**
   * 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
   * @param {jQuery.Event} 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
   * @param {jQuery.Event} 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 {HTMLElement} element
   * @param {object} options
   * @param {object} options.data
   */
  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 {object} form_values
   * @param {HTMLElement} element
   * @param {object} 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
   * @param {object} options
   * @param {object} options.extraData
   */
  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
   * @param {number} 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
   * @param {string} [response.effect]
   * @param {string|number} [response.speed]
   *
   * @return {object}
   */
  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
   * @param {string} uri
   * @param {string} customMessage
   */
  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
     * @param {object} response
     * @param {string} response.data
     * @param {string} [response.method]
     * @param {string} [response.selector]
     * @param {object} [response.settings]
     * @param {number} [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]
     * @param {object} response
     * @param {string} response.selector
     * @param {object} [response.settings]
     * @param {number} [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]
     * @param {object} response
     * @param {string} response.selector
     * @param {bool} [response.asterisk]
     * @param {number} [status]
     */
    changed: function (ajax, response, status) {
      if (!$(response.selector).hasClass('ajax-changed')) {
        $(response.selector).addClass('ajax-changed');
        if (response.asterisk) {
          $(response.selector).find(response.asterisk).append(' <abbr class="ajax-changed" title="' + Drupal.t('Changed') + '">*</abbr> ');
        }
      }
    },

    /**
     * Command to provide an alert.
     *
     * @param {Drupal.Ajax} [ajax]
     * @param {object} response
     * @param {string} response.text
     * @param {string} response.title
     * @param {number} [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]
     * @param {object} response
     * @param {string} response.url
     * @param {number} [status]
     */
    redirect: function (ajax, response, status) {
      window.location = response.url;
    },

    /**
     * Command to provide the jQuery css() function.
     *
     * @param {Drupal.Ajax} [ajax]
     * @param {object} response
     * @param {object} response.argument
     * @param {number} [status]
     */
    css: function (ajax, response, status) {
      $(response.selector).css(response.argument);
    },

    /**
     * Command to set the settings used for other commands in this response.
     *
     * @param {Drupal.Ajax} [ajax]
     * @param {object} response
     * @param {bool} response.merge
     * @param {object} response.settings
     * @param {number} [status]
     */
    settings: function (ajax, response, status) {
      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]
     * @param {object} response
     * @param {string} response.name
     * @param {string} response.selector
     * @param {string|object} response.value
     * @param {number} [status]
     */
    data: function (ajax, response, status) {
      $(response.selector).data(response.name, response.value);
    },

    /**
     * Command to apply a jQuery method.
     *
     * @param {Drupal.Ajax} [ajax]
     * @param {object} response
     * @param {Array} response.args
     * @param {string} response.method
     * @param {string} response.selector
     * @param {number} [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]
     * @param {object} response
     * @param {string} response.selector
     * @param {number} [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]
     * @param {object} response
     * @param {string} response.old
     * @param {string} response.new
     * @param {number} [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]
     * @param {object} response
     * @param {string} response.data
     * @param {number} [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, this, Drupal, drupalSettings);
;
/**
 * @file
 * Text behaviors.
 */

(function ($) {

  'use strict';

  /**
   * Auto-hide summary textarea if empty and show hide and unhide links.
   *
   * @type {Drupal~behavior}
   *
   * @prop {Drupal~behaviorAttach} attach
   *   Attaches auto-hide behavior on `text-summary` events.
   */
  Drupal.behaviors.textSummary = {
    attach: function (context, settings) {
      $(context).find('.js-text-summary').once('text-summary').each(function () {
        var $widget = $(this).closest('.js-text-format-wrapper');

        var $summary = $widget.find('.js-text-summary-wrapper');
        var $summaryLabel = $summary.find('label').eq(0);
        var $full = $widget.find('.js-text-full').closest('.js-form-item');
        var $fullLabel = $full.find('label').eq(0);

        // Create a placeholder label when the field cardinality is greater
        // than 1.
        if ($fullLabel.length === 0) {
          $fullLabel = $('<label></label>').prependTo($full);
        }

        // Set up the edit/hide summary link.
        var $link = $('<span class="field-edit-link"> (<button type="button" class="link link-edit-summary">' + Drupal.t('Hide summary') + '</button>)</span>');
        var $button = $link.find('button');
        var toggleClick = true;
        $link.on('click', function (e) {
          if (toggleClick) {
            $summary.hide();
            $button.html(Drupal.t('Edit summary'));
            $link.appendTo($fullLabel);
          }
          else {
            $summary.show();
            $button.html(Drupal.t('Hide summary'));
            $link.appendTo($summaryLabel);
          }
          e.preventDefault();
          toggleClick = !toggleClick;
        }).appendTo($summaryLabel);

        // If no summary is set, hide the summary field.
        if ($widget.find('.js-text-summary').val() === '') {
          $link.trigger('click');
        }
      });
    }
  };

})(jQuery);
;
/**
 * @file
 * Responsive navigation tabs.
 *
 * This also supports collapsible navigable is the 'is-collapsible' class is
 * added to the main element, and a target element is included.
 */
(function ($, Drupal) {

  'use strict';

  function init(i, tab) {
    var $tab = $(tab);
    var $target = $tab.find('[data-drupal-nav-tabs-target]');
    var isCollapsible = $tab.hasClass('is-collapsible');

    function openMenu(e) {
      $target.toggleClass('is-open');
    }

    function handleResize(e) {
      $tab.addClass('is-horizontal');
      var $tabs = $tab.find('.tabs');
      var isHorizontal = $tabs.outerHeight() <= $tabs.find('.tabs__tab').outerHeight();
      $tab.toggleClass('is-horizontal', isHorizontal);
      if (isCollapsible) {
        $tab.toggleClass('is-collapse-enabled', !isHorizontal);
      }
      if (isHorizontal) {
        $target.removeClass('is-open');
      }
    }

    $tab.addClass('position-container is-horizontal-enabled');

    $tab.on('click.tabs', '[data-drupal-nav-tabs-trigger]', openMenu);
    $(window).on('resize.tabs', Drupal.debounce(handleResize, 150)).trigger('resize.tabs');
  }

  /**
   * Initialise the tabs JS.
   */
  Drupal.behaviors.navTabs = {
    attach: function (context, settings) {
      var $tabs = $(context).find('[data-drupal-nav-tabs]');
      if ($tabs.length) {
        var notSmartPhone = window.matchMedia('(min-width: 300px)');
        if (notSmartPhone.matches) {
          $tabs.once('nav-tabs').each(init);
        }
      }
    }
  };

})(jQuery, Drupal);
;
/**
 * @file
 * Adds an HTML element and method to trigger audio UAs to read system messages.
 *
 * Use {@link Drupal.announce} to indicate to screen reader users that an
 * element on the page has changed state. For instance, if clicking a link
 * loads 10 more items into a list, one might announce the change like this.
 *
 * @example
 * $('#search-list')
 *   .on('itemInsert', function (event, data) {
 *     // Insert the new items.
 *     $(data.container.el).append(data.items.el);
 *     // Announce the change to the page contents.
 *     Drupal.announce(Drupal.t('@count items added to @container',
 *       {'@count': data.items.length, '@container': data.container.title}
 *     ));
 *   });
 */

(function (Drupal, debounce) {

  'use strict';

  var liveElement;
  var announcements = [];

  /**
   * Builds a div element with the aria-live attribute and add it to the DOM.
   *
   * @type {Drupal~behavior}
   */
  Drupal.behaviors.drupalAnnounce = {
    attach: function (context) {
      // Create only one aria-live element.
      if (!liveElement) {
        liveElement = document.createElement('div');
        liveElement.id = 'drupal-live-announce';
        liveElement.className = 'visually-hidden';
        liveElement.setAttribute('aria-live', 'polite');
        liveElement.setAttribute('aria-busy', 'false');
        document.body.appendChild(liveElement);
      }
    }
  };

  /**
   * Concatenates announcements to a single string; appends to the live region.
   */
  function announce() {
    var text = [];
    var priority = 'polite';
    var announcement;

    // Create an array of announcement strings to be joined and appended to the
    // aria live region.
    var il = announcements.length;
    for (var i = 0; i < il; i++) {
      announcement = announcements.pop();
      text.unshift(announcement.text);
      // If any of the announcements has a priority of assertive then the group
      // of joined announcements will have this priority.
      if (announcement.priority === 'assertive') {
        priority = 'assertive';
      }
    }

    if (text.length) {
      // Clear the liveElement so that repeated strings will be read.
      liveElement.innerHTML = '';
      // Set the busy state to true until the node changes are complete.
      liveElement.setAttribute('aria-busy', 'true');
      // Set the priority to assertive, or default to polite.
      liveElement.setAttribute('aria-live', priority);
      // Print the text to the live region. Text should be run through
      // Drupal.t() before being passed to Drupal.announce().
      liveElement.innerHTML = text.join('\n');
      // The live text area is updated. Allow the AT to announce the text.
      liveElement.setAttribute('aria-busy', 'false');
    }
  }

  /**
   * Triggers audio UAs to read the supplied text.
   *
   * The aria-live region will only read the text that currently populates its
   * text node. Replacing text quickly in rapid calls to announce results in
   * only the text from the most recent call to {@link Drupal.announce} being
   * read. By wrapping the call to announce in a debounce function, we allow for
   * time for multiple calls to {@link Drupal.announce} to queue up their
   * messages. These messages are then joined and append to the aria-live region
   * as one text node.
   *
   * @param {string} text
   *   A string to be read by the UA.
   * @param {string} [priority='polite']
   *   A string to indicate the priority of the message. Can be either
   *   'polite' or 'assertive'.
   *
   * @return {function}
   *
   * @see http://www.w3.org/WAI/PF/aria-practices/#liveprops
   */
  Drupal.announce = function (text, priority) {
    // Save the text and priority into a closure variable. Multiple simultaneous
    // announcements will be concatenated and read in sequence.
    announcements.push({
      text: text,
      priority: priority
    });
    // Immediately invoke the function that debounce returns. 200 ms is right at
    // the cusp where humans notice a pause, so we will wait
    // at most this much time before the set of queued announcements is read.
    return (debounce(announce, 200)());
  };
}(Drupal, Drupal.debounce));
;
(function(){if(window.matchMedia&&window.matchMedia("all").addListener){return false}var e=window.matchMedia,i=e("only all").matches,n=false,t=0,a=[],r=function(i){clearTimeout(t);t=setTimeout(function(){for(var i=0,n=a.length;i<n;i++){var t=a[i].mql,r=a[i].listeners||[],o=e(t.media).matches;if(o!==t.matches){t.matches=o;for(var s=0,l=r.length;s<l;s++){r[s].call(window,t)}}}},30)};window.matchMedia=function(t){var o=e(t),s=[],l=0;o.addListener=function(e){if(!i){return}if(!n){n=true;window.addEventListener("resize",r,true)}if(l===0){l=a.push({mql:o,listeners:s})}s.push(e)};o.removeListener=function(e){for(var i=0,n=s.length;i<n;i++){if(s[i]===e){s.splice(i,1)}}};return o}})();
;
/**
 * @file
 * Builds a nested accordion widget.
 *
 * Invoke on an HTML list element with the jQuery plugin pattern.
 *
 * @example
 * $('.toolbar-menu').drupalToolbarMenu();
 */

(function ($, Drupal, drupalSettings) {

  'use strict';

  /**
   * Store the open menu tray.
   */
  var activeItem = Drupal.url(drupalSettings.path.currentPath);

  $.fn.drupalToolbarMenu = function () {

    var ui = {
      handleOpen: Drupal.t('Extend'),
      handleClose: Drupal.t('Collapse')
    };

    /**
     * Handle clicks from the disclosure button on an item with sub-items.
     *
     * @param {Object} event
     *   A jQuery Event object.
     */
    function toggleClickHandler(event) {
      var $toggle = $(event.target);
      var $item = $toggle.closest('li');
      // Toggle the list item.
      toggleList($item);
      // Close open sibling menus.
      var $openItems = $item.siblings().filter('.open');
      toggleList($openItems, false);
    }

    /**
     * Handle clicks from a menu item link.
     *
     * @param {Object} event
     *   A jQuery Event object.
     */
    function linkClickHandler(event) {
      // If the toolbar is positioned fixed (and therefore hiding content
      // underneath), then users expect clicks in the administration menu tray
      // to take them to that destination but for the menu tray to be closed
      // after clicking: otherwise the toolbar itself is obstructing the view
      // of the destination they chose.
      if (!Drupal.toolbar.models.toolbarModel.get('isFixed')) {
        Drupal.toolbar.models.toolbarModel.set('activeTab', null);
      }
      // Stopping propagation to make sure that once a toolbar-box is clicked
      // (the whitespace part), the page is not redirected anymore.
      event.stopPropagation();
    }

    /**
     * Toggle the open/close state of a list is a menu.
     *
     * @param {jQuery} $item
     *   The li item to be toggled.
     *
     * @param {Boolean} switcher
     *   A flag that forces toggleClass to add or a remove a class, rather than
     *   simply toggling its presence.
     */
    function toggleList($item, switcher) {
      var $toggle = $item.children('.toolbar-box').children('.toolbar-handle');
      switcher = (typeof switcher !== 'undefined') ? switcher : !$item.hasClass('open');
      // Toggle the item open state.
      $item.toggleClass('open', switcher);
      // Twist the toggle.
      $toggle.toggleClass('open', switcher);
      // Adjust the toggle text.
      $toggle
        .find('.action')
        // Expand Structure, Collapse Structure.
        .text((switcher) ? ui.handleClose : ui.handleOpen);
    }

    /**
     * Add markup to the menu elements.
     *
     * Items with sub-elements have a list toggle attached to them. Menu item
     * links and the corresponding list toggle are wrapped with in a div
     * classed with .toolbar-box. The .toolbar-box div provides a positioning
     * context for the item list toggle.
     *
     * @param {jQuery} $menu
     *   The root of the menu to be initialized.
     */
    function initItems($menu) {
      var options = {
        class: 'toolbar-icon toolbar-handle',
        action: ui.handleOpen,
        text: ''
      };
      // Initialize items and their links.
      $menu.find('li > a').wrap('<div class="toolbar-box">');
      // Add a handle to each list item if it has a menu.
      $menu.find('li').each(function (index, element) {
        var $item = $(element);
        if ($item.children('ul.toolbar-menu').length) {
          var $box = $item.children('.toolbar-box');
          options.text = Drupal.t('@label', {'@label': $box.find('a').text()});
          $item.children('.toolbar-box')
            .append(Drupal.theme('toolbarMenuItemToggle', options));
        }
      });
    }

    /**
     * Adds a level class to each list based on its depth in the menu.
     *
     * This function is called recursively on each sub level of lists elements
     * until the depth of the menu is exhausted.
     *
     * @param {jQuery} $lists
     *   A jQuery object of ul elements.
     *
     * @param {number} level
     *   The current level number to be assigned to the list elements.
     */
    function markListLevels($lists, level) {
      level = (!level) ? 1 : level;
      var $lis = $lists.children('li').addClass('level-' + level);
      $lists = $lis.children('ul');
      if ($lists.length) {
        markListLevels($lists, level + 1);
      }
    }

    /**
     * On page load, open the active menu item.
     *
     * Marks the trail of the active link in the menu back to the root of the
     * menu with .menu-item--active-trail.
     *
     * @param {jQuery} $menu
     *   The root of the menu.
     */
    function openActiveItem($menu) {
      var pathItem = $menu.find('a[href="' + location.pathname + '"]');
      if (pathItem.length && !activeItem) {
        activeItem = location.pathname;
      }
      if (activeItem) {
        var $activeItem = $menu.find('a[href="' + activeItem + '"]').addClass('menu-item--active');
        var $activeTrail = $activeItem.parentsUntil('.root', 'li').addClass('menu-item--active-trail');
        toggleList($activeTrail, true);
      }
    }

    // Return the jQuery object.
    return this.each(function (selector) {
      var $menu = $(this).once('toolbar-menu');
      if ($menu.length) {
        // Bind event handlers.
        $menu
          .on('click.toolbar', '.toolbar-box', toggleClickHandler)
          .on('click.toolbar', '.toolbar-box a', linkClickHandler);

        $menu.addClass('root');
        initItems($menu);
        markListLevels($menu);
        // Restore previous and active states.
        openActiveItem($menu);
      }
    });
  };

  /**
   * A toggle is an interactive element often bound to a click handler.
   *
   * @param {object} options
   *   Options for the button.
   * @param {string} options.class
   *   Class to set on the button.
   * @param {string} options.action
   *   Action for the button.
   * @param {string} options.text
   *   Used as label for the button.
   *
   * @return {string}
   *   A string representing a DOM fragment.
   */
  Drupal.theme.toolbarMenuItemToggle = function (options) {
    return '<button class="' + options['class'] + '"><span class="action">' + options.action + '</span><span class="label">' + options.text + '</span></button>';
  };

}(jQuery, Drupal, drupalSettings));
;
/**
 * @file
 * Defines the behavior of the Drupal administration toolbar.
 */

(function ($, Drupal, drupalSettings) {

  'use strict';

  // Merge run-time settings with the defaults.
  var options = $.extend(
    {
      breakpoints: {
        'toolbar.narrow': '',
        'toolbar.standard': '',
        'toolbar.wide': ''
      }
    },
    drupalSettings.toolbar,
    // Merge strings on top of drupalSettings so that they are not mutable.
    {
      strings: {
        horizontal: Drupal.t('Horizontal orientation'),
        vertical: Drupal.t('Vertical orientation')
      }
    }
  );

  /**
   * Registers tabs with the toolbar.
   *
   * The Drupal toolbar allows modules to register top-level tabs. These may
   * point directly to a resource or toggle the visibility of a tray.
   *
   * Modules register tabs with hook_toolbar().
   *
   * @type {Drupal~behavior}
   *
   * @prop {Drupal~behaviorAttach} attach
   *   Attaches the toolbar rendering functionality to the toolbar element.
   */
  Drupal.behaviors.toolbar = {
    attach: function (context) {
      // Verify that the user agent understands media queries. Complex admin
      // toolbar layouts require media query support.
      if (!window.matchMedia('only screen').matches) {
        return;
      }
      // Process the administrative toolbar.
      $(context).find('#toolbar-administration').once('toolbar').each(function () {

        // Establish the toolbar models and views.
        var model = Drupal.toolbar.models.toolbarModel = new Drupal.toolbar.ToolbarModel({
          locked: JSON.parse(localStorage.getItem('Drupal.toolbar.trayVerticalLocked')) || false,
          activeTab: document.getElementById(JSON.parse(localStorage.getItem('Drupal.toolbar.activeTabID')))
        });
        Drupal.toolbar.views.toolbarVisualView = new Drupal.toolbar.ToolbarVisualView({
          el: this,
          model: model,
          strings: options.strings
        });
        Drupal.toolbar.views.toolbarAuralView = new Drupal.toolbar.ToolbarAuralView({
          el: this,
          model: model,
          strings: options.strings
        });
        Drupal.toolbar.views.bodyVisualView = new Drupal.toolbar.BodyVisualView({
          el: this,
          model: model
        });

        // Render collapsible menus.
        var menuModel = Drupal.toolbar.models.menuModel = new Drupal.toolbar.MenuModel();
        Drupal.toolbar.views.menuVisualView = new Drupal.toolbar.MenuVisualView({
          el: $(this).find('.toolbar-menu-administration').get(0),
          model: menuModel,
          strings: options.strings
        });

        // Handle the resolution of Drupal.toolbar.setSubtrees.
        // This is handled with a deferred so that the function may be invoked
        // asynchronously.
        Drupal.toolbar.setSubtrees.done(function (subtrees) {
          menuModel.set('subtrees', subtrees);
          var theme = drupalSettings.ajaxPageState.theme;
          localStorage.setItem('Drupal.toolbar.subtrees.' + theme, JSON.stringify(subtrees));
          // Indicate on the toolbarModel that subtrees are now loaded.
          model.set('areSubtreesLoaded', true);
        });

        // Attach a listener to the configured media query breakpoints.
        for (var label in options.breakpoints) {
          if (options.breakpoints.hasOwnProperty(label)) {
            var mq = options.breakpoints[label];
            var mql = Drupal.toolbar.mql[label] = window.matchMedia(mq);
            // Curry the model and the label of the media query breakpoint to
            // the mediaQueryChangeHandler function.
            mql.addListener(Drupal.toolbar.mediaQueryChangeHandler.bind(null, model, label));
            // Fire the mediaQueryChangeHandler for each configured breakpoint
            // so that they process once.
            Drupal.toolbar.mediaQueryChangeHandler.call(null, model, label, mql);
          }
        }

        // Trigger an initial attempt to load menu subitems. This first attempt
        // is made after the media query handlers have had an opportunity to
        // process. The toolbar starts in the vertical orientation by default,
        // unless the viewport is wide enough to accommodate a horizontal
        // orientation. Thus we give the Toolbar a chance to determine if it
        // should be set to horizontal orientation before attempting to load
        // menu subtrees.
        Drupal.toolbar.views.toolbarVisualView.loadSubtrees();

        $(document)
          // Update the model when the viewport offset changes.
          .on('drupalViewportOffsetChange.toolbar', function (event, offsets) {
            model.set('offsets', offsets);
          });

        // Broadcast model changes to other modules.
        model
          .on('change:orientation', function (model, orientation) {
            $(document).trigger('drupalToolbarOrientationChange', orientation);
          })
          .on('change:activeTab', function (model, tab) {
            $(document).trigger('drupalToolbarTabChange', tab);
          })
          .on('change:activeTray', function (model, tray) {
            $(document).trigger('drupalToolbarTrayChange', tray);
          });

        // If the toolbar's orientation is horizontal and no active tab is
        // defined then show the tray of the first toolbar tab by default (but
        // not the first 'Home' toolbar tab).
        if (Drupal.toolbar.models.toolbarModel.get('orientation') === 'horizontal' && Drupal.toolbar.models.toolbarModel.get('activeTab') === null) {
          Drupal.toolbar.models.toolbarModel.set({
            activeTab: $('.toolbar-bar .toolbar-tab:not(.home-toolbar-tab) a').get(0)
          });
        }
      });
    }
  };

  /**
   * Toolbar methods of Backbone objects.
   *
   * @namespace
   */
  Drupal.toolbar = {

    /**
     * A hash of View instances.
     *
     * @type {object.<string, Backbone.View>}
     */
    views: {},

    /**
     * A hash of Model instances.
     *
     * @type {object.<string, Backbone.Model>}
     */
    models: {},

    /**
     * A hash of MediaQueryList objects tracked by the toolbar.
     *
     * @type {object.<string, object>}
     */
    mql: {},

    /**
     * Accepts a list of subtree menu elements.
     *
     * A deferred object that is resolved by an inlined JavaScript callback.
     *
     * @type {jQuery.Deferred}
     *
     * @see toolbar_subtrees_jsonp().
     */
    setSubtrees: new $.Deferred(),

    /**
     * Respond to configured narrow media query changes.
     *
     * @param {Drupal.toolbar.ToolbarModel} model
     *   A toolbar model
     * @param {string} label
     *   Media query label.
     * @param {object} mql
     *   A MediaQueryList object.
     */
    mediaQueryChangeHandler: function (model, label, mql) {
      switch (label) {
        case 'toolbar.narrow':
          model.set({
            isOriented: mql.matches,
            isTrayToggleVisible: false
          });
          // If the toolbar doesn't have an explicit orientation yet, or if the
          // narrow media query doesn't match then set the orientation to
          // vertical.
          if (!mql.matches || !model.get('orientation')) {
            model.set({orientation: 'vertical'}, {validate: true});
          }
          break;

        case 'toolbar.standard':
          model.set({
            isFixed: mql.matches
          });
          break;

        case 'toolbar.wide':
          model.set({
            orientation: ((mql.matches) ? 'horizontal' : 'vertical')
          }, {validate: true});
          // The tray orientation toggle visibility does not need to be
          // validated.
          model.set({
            isTrayToggleVisible: mql.matches
          });
          break;

        default:
          break;
      }
    }
  };

  /**
   * A toggle is an interactive element often bound to a click handler.
   *
   * @return {string}
   *   A string representing a DOM fragment.
   */
  Drupal.theme.toolbarOrientationToggle = function () {
    return '<div class="toolbar-toggle-orientation"><div class="toolbar-lining">' +
      '<button class="toolbar-icon" type="button"></button>' +
      '</div></div>';
  };

  /**
   * Ajax command to set the toolbar subtrees.
   *
   * @param {Drupal.Ajax} ajax
   *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
   * @param {object} response
   *   JSON response from the Ajax request.
   * @param {number} [status]
   *   XMLHttpRequest status.
   */
  Drupal.AjaxCommands.prototype.setToolbarSubtrees = function (ajax, response, status) {
    Drupal.toolbar.setSubtrees.resolve(response.subtrees);
  };

}(jQuery, Drupal, drupalSettings));
;
/**
 * @file
 * A Backbone Model for collapsible menus.
 */

(function (Backbone, Drupal) {

  'use strict';

  /**
   * Backbone Model for collapsible menus.
   *
   * @constructor
   *
   * @augments Backbone.Model
   */
  Drupal.toolbar.MenuModel = Backbone.Model.extend(/** @lends Drupal.toolbar.MenuModel# */{

    /**
     * @type {object}
     *
     * @prop {object} subtrees
     */
    defaults: /** @lends Drupal.toolbar.MenuModel# */{

      /**
       * @type {object}
       */
      subtrees: {}
    }
  });

}(Backbone, Drupal));
;
/**
 * @file
 * A Backbone Model for the toolbar.
 */

(function (Backbone, Drupal) {

  'use strict';

  /**
   * Backbone model for the toolbar.
   *
   * @constructor
   *
   * @augments Backbone.Model
   */
  Drupal.toolbar.ToolbarModel = Backbone.Model.extend(/** @lends Drupal.toolbar.ToolbarModel# */{

    /**
     * @type {object}
     *
     * @prop activeTab
     * @prop activeTray
     * @prop isOriented
     * @prop isFixed
     * @prop areSubtreesLoaded
     * @prop isViewportOverflowConstrained
     * @prop orientation
     * @prop locked
     * @prop isTrayToggleVisible
     * @prop height
     * @prop offsets
     */
    defaults: /** @lends Drupal.toolbar.ToolbarModel# */{

      /**
       * The active toolbar tab. All other tabs should be inactive under
       * normal circumstances. It will remain active across page loads. The
       * active item is stored as an ID selector e.g. '#toolbar-item--1'.
       *
       * @type {string}
       */
      activeTab: null,

      /**
       * Represents whether a tray is open or not. Stored as an ID selector e.g.
       * '#toolbar-item--1-tray'.
       *
       * @type {string}
       */
      activeTray: null,

      /**
       * Indicates whether the toolbar is displayed in an oriented fashion,
       * either horizontal or vertical.
       *
       * @type {bool}
       */
      isOriented: false,

      /**
       * Indicates whether the toolbar is positioned absolute (false) or fixed
       * (true).
       *
       * @type {bool}
       */
      isFixed: false,

      /**
       * Menu subtrees are loaded through an AJAX request only when the Toolbar
       * is set to a vertical orientation.
       *
       * @type {bool}
       */
      areSubtreesLoaded: false,

      /**
       * If the viewport overflow becomes constrained, isFixed must be true so
       * that elements in the trays aren't lost off-screen and impossible to
       * get to.
       *
       * @type {bool}
       */
      isViewportOverflowConstrained: false,

      /**
       * The orientation of the active tray.
       *
       * @type {string}
       */
      orientation: 'vertical',

      /**
       * A tray is locked if a user toggled it to vertical. Otherwise a tray
       * will switch between vertical and horizontal orientation based on the
       * configured breakpoints. The locked state will be maintained across page
       * loads.
       *
       * @type {bool}
       */
      locked: false,

      /**
       * Indicates whether the tray orientation toggle is visible.
       *
       * @type {bool}
       */
      isTrayToggleVisible: false,

      /**
       * The height of the toolbar.
       *
       * @type {number}
       */
      height: null,

      /**
       * The current viewport offsets determined by {@link Drupal.displace}. The
       * offsets suggest how a module might position is components relative to
       * the viewport.
       *
       * @type {object}
       *
       * @prop {number} top
       * @prop {number} right
       * @prop {number} bottom
       * @prop {number} left
       */
      offsets: {
        top: 0,
        right: 0,
        bottom: 0,
        left: 0
      }
    },

    /**
     * @inheritdoc
     *
     * @param {object} attributes
     *   Attributes for the toolbar.
     * @param {object} options
     *   Options for the toolbar.
     *
     * @return {string|undefined}
     *   Returns an error message if validation failed.
     */
    validate: function (attributes, options) {
      // Prevent the orientation being set to horizontal if it is locked, unless
      // override has not been passed as an option.
      if (attributes.orientation === 'horizontal' && this.get('locked') && !options.override) {
        return Drupal.t('The toolbar cannot be set to a horizontal orientation when it is locked.');
      }
    }
  });

}(Backbone, Drupal));
;
/**
 * @file
 * A Backbone view for the body element.
 */

(function ($, Drupal, Backbone) {

  'use strict';

  Drupal.toolbar.BodyVisualView = Backbone.View.extend(/** @lends Drupal.toolbar.BodyVisualView# */{

    /**
     * Adjusts the body element with the toolbar position and dimension changes.
     *
     * @constructs
     *
     * @augments Backbone.View
     */
    initialize: function () {
      this.listenTo(this.model, 'change:orientation change:offsets change:activeTray change:isOriented change:isFixed change:isViewportOverflowConstrained', this.render);
    },

    /**
     * @inheritdoc
     */
    render: function () {
      var $body = $('body');
      var orientation = this.model.get('orientation');
      var isOriented = this.model.get('isOriented');
      var isViewportOverflowConstrained = this.model.get('isViewportOverflowConstrained');

      $body
        // We are using JavaScript to control media-query handling for two
        // reasons: (1) Using JavaScript let's us leverage the breakpoint
        // configurations and (2) the CSS is really complex if we try to hide
        // some styling from browsers that don't understand CSS media queries.
        // If we drive the CSS from classes added through JavaScript,
        // then the CSS becomes simpler and more robust.
        .toggleClass('toolbar-vertical', (orientation === 'vertical'))
        .toggleClass('toolbar-horizontal', (isOriented && orientation === 'horizontal'))
        // When the toolbar is fixed, it will not scroll with page scrolling.
        .toggleClass('toolbar-fixed', (isViewportOverflowConstrained || this.model.get('isFixed')))
        // Toggle the toolbar-tray-open class on the body element. The class is
        // applied when a toolbar tray is active. Padding might be applied to
        // the body element to prevent the tray from overlapping content.
        .toggleClass('toolbar-tray-open', !!this.model.get('activeTray'))
        // Apply padding to the top of the body to offset the placement of the
        // toolbar bar element.
        .css('padding-top', this.model.get('offsets').top);
    }
  });

}(jQuery, Drupal, Backbone));
;
/**
 * @file
 * A Backbone view for the collapsible menus.
 */

(function ($, Backbone, Drupal) {

  'use strict';

  Drupal.toolbar.MenuVisualView = Backbone.View.extend(/** @lends Drupal.toolbar.MenuVisualView# */{

    /**
     * Backbone View for collapsible menus.
     *
     * @constructs
     *
     * @augments Backbone.View
     */
    initialize: function () {
      this.listenTo(this.model, 'change:subtrees', this.render);
    },

    /**
     * @inheritdoc
     */
    render: function () {
      var subtrees = this.model.get('subtrees');
      // Add subtrees.
      for (var id in subtrees) {
        if (subtrees.hasOwnProperty(id)) {
          this.$el
            .find('#toolbar-link-' + id)
            .once('toolbar-subtrees')
            .after(subtrees[id]);
        }
      }
      // Render the main menu as a nested, collapsible accordion.
      if ('drupalToolbarMenu' in $.fn) {
        this.$el
          .children('.toolbar-menu')
          .drupalToolbarMenu();
      }
    }
  });

}(jQuery, Backbone, Drupal));
;
/**
 * @file
 * A Backbone view for the aural feedback of the toolbar.
 */

(function (Backbone, Drupal) {

  'use strict';

  Drupal.toolbar.ToolbarAuralView = Backbone.View.extend(/** @lends Drupal.toolbar.ToolbarAuralView# */{

    /**
     * Backbone view for the aural feedback of the toolbar.
     *
     * @constructs
     *
     * @augments Backbone.View
     *
     * @param {object} options
     *   Options for the view.
     * @param {object} options.strings
     *   Various strings to use in the view.
     */
    initialize: function (options) {
      this.strings = options.strings;

      this.listenTo(this.model, 'change:orientation', this.onOrientationChange);
      this.listenTo(this.model, 'change:activeTray', this.onActiveTrayChange);
    },

    /**
     * Announces an orientation change.
     *
     * @param {Drupal.toolbar.ToolbarModel} model
     *   The toolbar model in question.
     * @param {string} orientation
     *   The new value of the orientation attribute in the model.
     */
    onOrientationChange: function (model, orientation) {
      Drupal.announce(Drupal.t('Tray orientation changed to @orientation.', {
        '@orientation': orientation
      }));
    },

    /**
     * Announces a changed active tray.
     *
     * @param {Drupal.toolbar.ToolbarModel} model
     *   The toolbar model in question.
     * @param {HTMLElement} tray
     *   The new value of the tray attribute in the model.
     */
    onActiveTrayChange: function (model, tray) {
      var relevantTray = (tray === null) ? model.previous('activeTray') : tray;
      var action = (tray === null) ? Drupal.t('closed') : Drupal.t('opened');
      var trayNameElement = relevantTray.querySelector('.toolbar-tray-name');
      var text;
      if (trayNameElement !== null) {
        text = Drupal.t('Tray "@tray" @action.', {
          '@tray': trayNameElement.textContent, '@action': action
        });
      }
      else {
        text = Drupal.t('Tray @action.', {'@action': action});
      }
      Drupal.announce(text);
    }
  });

}(Backbone, Drupal));
;
/**
 * @file
 * A Backbone view for the toolbar element. Listens to mouse & touch.
 */

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

  'use strict';

  Drupal.toolbar.ToolbarVisualView = Backbone.View.extend(/** @lends Drupal.toolbar.ToolbarVisualView# */{

    /**
     * Event map for the `ToolbarVisualView`.
     *
     * @return {object}
     *   A map of events.
     */
    events: function () {
      // Prevents delay and simulated mouse events.
      var touchEndToClick = function (event) {
        event.preventDefault();
        event.target.click();
      };

      return {
        'click .toolbar-bar .toolbar-tab': 'onTabClick',
        'click .toolbar-toggle-orientation button': 'onOrientationToggleClick',
        'touchend .toolbar-bar .toolbar-tab': touchEndToClick,
        'touchend .toolbar-toggle-orientation button': touchEndToClick
      };
    },

    /**
     * Backbone view for the toolbar element. Listens to mouse & touch.
     *
     * @constructs
     *
     * @augments Backbone.View
     *
     * @param {object} options
     *   Options for the view object.
     * @param {object} options.strings
     *   Various strings to use in the view.
     */
    initialize: function (options) {
      this.strings = options.strings;

      this.listenTo(this.model, 'change:activeTab change:orientation change:isOriented change:isTrayToggleVisible', this.render);
      this.listenTo(this.model, 'change:mqMatches', this.onMediaQueryChange);
      this.listenTo(this.model, 'change:offsets', this.adjustPlacement);

      // Add the tray orientation toggles.
      this.$el
        .find('.toolbar-tray .toolbar-lining')
        .append(Drupal.theme('toolbarOrientationToggle'));

      // Trigger an activeTab change so that listening scripts can respond on
      // page load. This will call render.
      this.model.trigger('change:activeTab');
    },

    /**
     * @inheritdoc
     *
     * @return {Drupal.toolbar.ToolbarVisualView}
     *   The `ToolbarVisualView` instance.
     */
    render: function () {
      this.updateTabs();
      this.updateTrayOrientation();
      this.updateBarAttributes();
      // Load the subtrees if the orientation of the toolbar is changed to
      // vertical. This condition responds to the case that the toolbar switches
      // from horizontal to vertical orientation. The toolbar starts in a
      // vertical orientation by default and then switches to horizontal during
      // initialization if the media query conditions are met. Simply checking
      // that the orientation is vertical here would result in the subtrees
      // always being loaded, even when the toolbar initialization ultimately
      // results in a horizontal orientation.
      //
      // @see Drupal.behaviors.toolbar.attach() where admin menu subtrees
      // loading is invoked during initialization after media query conditions
      // have been processed.
      if (this.model.changed.orientation === 'vertical' || this.model.changed.activeTab) {
        this.loadSubtrees();
      }
      // Trigger a recalculation of viewport displacing elements. Use setTimeout
      // to ensure this recalculation happens after changes to visual elements
      // have processed.
      window.setTimeout(function () {
        Drupal.displace(true);
      }, 0);
      return this;
    },

    /**
     * Responds to a toolbar tab click.
     *
     * @param {jQuery.Event} event
     *   The event triggered.
     */
    onTabClick: function (event) {
      // If this tab has a tray associated with it, it is considered an
      // activatable tab.
      if (event.target.hasAttribute('data-toolbar-tray')) {
        var activeTab = this.model.get('activeTab');
        var clickedTab = event.target;

        // Set the event target as the active item if it is not already.
        this.model.set('activeTab', (!activeTab || clickedTab !== activeTab) ? clickedTab : null);

        event.preventDefault();
        event.stopPropagation();
      }
    },

    /**
     * Toggles the orientation of a toolbar tray.
     *
     * @param {jQuery.Event} event
     *   The event triggered.
     */
    onOrientationToggleClick: function (event) {
      var orientation = this.model.get('orientation');
      // Determine the toggle-to orientation.
      var antiOrientation = (orientation === 'vertical') ? 'horizontal' : 'vertical';
      var locked = antiOrientation === 'vertical';
      // Remember the locked state.
      if (locked) {
        localStorage.setItem('Drupal.toolbar.trayVerticalLocked', 'true');
      }
      else {
        localStorage.removeItem('Drupal.toolbar.trayVerticalLocked');
      }
      // Update the model.
      this.model.set({
        locked: locked,
        orientation: antiOrientation
      }, {
        validate: true,
        override: true
      });

      event.preventDefault();
      event.stopPropagation();
    },

    /**
     * Updates the display of the tabs: toggles a tab and the associated tray.
     */
    updateTabs: function () {
      var $tab = $(this.model.get('activeTab'));
      // Deactivate the previous tab.
      $(this.model.previous('activeTab'))
        .removeClass('is-active')
        .prop('aria-pressed', false);
      // Deactivate the previous tray.
      $(this.model.previous('activeTray'))
        .removeClass('is-active');

      // Activate the selected tab.
      if ($tab.length > 0) {
        $tab
          .addClass('is-active')
          // Mark the tab as pressed.
          .prop('aria-pressed', true);
        var name = $tab.attr('data-toolbar-tray');
        // Store the active tab name or remove the setting.
        var id = $tab.get(0).id;
        if (id) {
          localStorage.setItem('Drupal.toolbar.activeTabID', JSON.stringify(id));
        }
        // Activate the associated tray.
        var $tray = this.$el.find('[data-toolbar-tray="' + name + '"].toolbar-tray');
        if ($tray.length) {
          $tray.addClass('is-active');
          this.model.set('activeTray', $tray.get(0));
        }
        else {
          // There is no active tray.
          this.model.set('activeTray', null);
        }
      }
      else {
        // There is no active tray.
        this.model.set('activeTray', null);
        localStorage.removeItem('Drupal.toolbar.activeTabID');
      }
    },

    /**
     * Update the attributes of the toolbar bar element.
     */
    updateBarAttributes: function () {
      var isOriented = this.model.get('isOriented');
      if (isOriented) {
        this.$el.find('.toolbar-bar').attr('data-offset-top', '');
      }
      else {
        this.$el.find('.toolbar-bar').removeAttr('data-offset-top');
      }
      // Toggle between a basic vertical view and a more sophisticated
      // horizontal and vertical display of the toolbar bar and trays.
      this.$el.toggleClass('toolbar-oriented', isOriented);
    },

    /**
     * Updates the orientation of the active tray if necessary.
     */
    updateTrayOrientation: function () {
      var orientation = this.model.get('orientation');
      // The antiOrientation is used to render the view of action buttons like
      // the tray orientation toggle.
      var antiOrientation = (orientation === 'vertical') ? 'horizontal' : 'vertical';
      // Update the orientation of the trays.
      var $trays = this.$el.find('.toolbar-tray')
        .removeClass('toolbar-tray-horizontal toolbar-tray-vertical')
        .addClass('toolbar-tray-' + orientation);

      // Update the tray orientation toggle button.
      var iconClass = 'toolbar-icon-toggle-' + orientation;
      var iconAntiClass = 'toolbar-icon-toggle-' + antiOrientation;
      var $orientationToggle = this.$el.find('.toolbar-toggle-orientation')
        .toggle(this.model.get('isTrayToggleVisible'));
      $orientationToggle.find('button')
        .val(antiOrientation)
        .attr('title', this.strings[antiOrientation])
        .text(this.strings[antiOrientation])
        .removeClass(iconClass)
        .addClass(iconAntiClass);

      // Update data offset attributes for the trays.
      var dir = document.documentElement.dir;
      var edge = (dir === 'rtl') ? 'right' : 'left';
      // Remove data-offset attributes from the trays so they can be refreshed.
      $trays.removeAttr('data-offset-left data-offset-right data-offset-top');
      // If an active vertical tray exists, mark it as an offset element.
      $trays.filter('.toolbar-tray-vertical.is-active').attr('data-offset-' + edge, '');
      // If an active horizontal tray exists, mark it as an offset element.
      $trays.filter('.toolbar-tray-horizontal.is-active').attr('data-offset-top', '');
    },

    /**
     * Sets the tops of the trays so that they align with the bottom of the bar.
     */
    adjustPlacement: function () {
      var $trays = this.$el.find('.toolbar-tray');
      if (!this.model.get('isOriented')) {
        $trays.css('margin-top', 0);
        $trays.removeClass('toolbar-tray-horizontal').addClass('toolbar-tray-vertical');
      }
      else {
        // The toolbar container is invisible. Its placement is used to
        // determine the container for the trays.
        $trays.css('margin-top', this.$el.find('.toolbar-bar').outerHeight());
      }
    },

    /**
     * Calls the endpoint URI that builds an AJAX command with the rendered
     * subtrees.
     *
     * The rendered admin menu subtrees HTML is cached on the client in
     * localStorage until the cache of the admin menu subtrees on the server-
     * side is invalidated. The subtreesHash is stored in localStorage as well
     * and compared to the subtreesHash in drupalSettings to determine when the
     * admin menu subtrees cache has been invalidated.
     */
    loadSubtrees: function () {
      var $activeTab = $(this.model.get('activeTab'));
      var orientation = this.model.get('orientation');
      // Only load and render the admin menu subtrees if:
      //   (1) They have not been loaded yet.
      //   (2) The active tab is the administration menu tab, indicated by the
      //       presence of the data-drupal-subtrees attribute.
      //   (3) The orientation of the tray is vertical.
      if (!this.model.get('areSubtreesLoaded') && typeof $activeTab.data('drupal-subtrees') !== 'undefined' && orientation === 'vertical') {
        var subtreesHash = drupalSettings.toolbar.subtreesHash;
        var theme = drupalSettings.ajaxPageState.theme;
        var endpoint = Drupal.url('toolbar/subtrees/' + subtreesHash);
        var cachedSubtreesHash = localStorage.getItem('Drupal.toolbar.subtreesHash.' + theme);
        var cachedSubtrees = JSON.parse(localStorage.getItem('Drupal.toolbar.subtrees.' + theme));
        var isVertical = this.model.get('orientation') === 'vertical';
        // If we have the subtrees in localStorage and the subtree hash has not
        // changed, then use the cached data.
        if (isVertical && subtreesHash === cachedSubtreesHash && cachedSubtrees) {
          Drupal.toolbar.setSubtrees.resolve(cachedSubtrees);
        }
        // Only make the call to get the subtrees if the orientation of the
        // toolbar is vertical.
        else if (isVertical) {
          // Remove the cached menu information.
          localStorage.removeItem('Drupal.toolbar.subtreesHash.' + theme);
          localStorage.removeItem('Drupal.toolbar.subtrees.' + theme);
          // The AJAX response's command will trigger the resolve method of the
          // Drupal.toolbar.setSubtrees Promise.
          Drupal.ajax({url: endpoint}).execute();
          // Cache the hash for the subtrees locally.
          localStorage.setItem('Drupal.toolbar.subtreesHash.' + theme, subtreesHash);
        }
      }
    }
  });

}(jQuery, Drupal, drupalSettings, Backbone));
;
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.joyride-modal-bg",function(e){e.preventDefault(),s.$li.next().length<1?o.end():s.timer>0?(clearTimeout(s.automate),o.hide(),o.show(),o.startTimer()):(o.hide(),o.show())}),s.$document.on("click.joyride",".joyride-close-tip",function(e){e.preventDefault(),o.end()}),s.$window.bind("resize.joyride",function(t){if(s.$li){if(s.exposed&&s.exposed.length>0){var n=e(s.exposed);n.each(function(){var t=e(this);o.un_expose(t),o.expose(t)})}o.is_phone()?o.pos_phone():o.pos_default()}})):o.restart()})},resume:function(){o.set_li(),o.show()},nextTip:function(){s.$li.next().length<1?o.end():s.timer>0?(clearTimeout(s.automate),o.hide(),o.show(),o.startTimer()):(o.hide(),o.show())},tip_template:function(t){var n,r,i;return t.tip_class=t.tip_class||"",n=e(s.template.tip).addClass(t.tip_class),r=e.trim(e(t.li).html())+o.button_text(t.button_text)+s.template.link+o.timer_instance(t.index),i=e(s.template.wrapper),t.li.attr("data-aria-labelledby")&&i.attr("aria-labelledby",t.li.attr("data-aria-labelledby")),t.li.attr("data-aria-describedby")&&i.attr("aria-describedby",t.li.attr("data-aria-describedby")),n.append(i),n.first().attr("data-index",t.index),e(".joyride-content-wrapper",n).append(r),n[0]},timer_instance:function(t){var n;return t===0&&s.startTimerOnClick&&s.timer>0||s.timer===0?n="":n=o.outerHTML(e(s.template.timer)[0]),n},button_text:function(t){return s.nextButton?(t=e.trim(t)||"Next",t=o.outerHTML(e(s.template.button).append(t)[0])):t="",t},create:function(t){var n=t.$li.attr("data-button")||t.$li.attr("data-text"),r=t.$li.attr("class"),i=e(o.tip_template({tip_class:r,index:t.index,button_text:n,li:t.$li}));e(s.tipContainer).append(i)},show:function(t){var r={},i,u=[],a=0,f,l=null;if(s.$li===n||e.inArray(s.$li.index(),s.pauseAfter)===-1){s.paused?s.paused=!1:o.set_li(t),s.attempts=0;if(s.$li.length&&s.$target.length>0){t&&(s.preRideCallback(s.$li.index(),s.$next_tip),s.modal&&o.show_modal()),s.preStepCallback(s.$li.index(),s.$next_tip),u=(s.$li.data("options")||":").split(";"),a=u.length;for(i=a-1;i>=0;i--)f=u[i].split(":"),f.length===2&&(r[e.trim(f[0])]=e.trim(f[1]));s.tipSettings=e.extend({},s,r),s.tipSettings.tipLocationPattern=s.tipLocationPatterns[s.tipSettings.tipLocation],s.modal&&s.expose&&o.expose(),!/body/i.test(s.$target.selector)&&s.scroll&&o.scroll_to(),o.is_phone()?o.pos_phone(!0):o.pos_default(!0),l=e(".joyride-timer-indicator",s.$next_tip),/pop/i.test(s.tipAnimation)?(l.outerWidth(0),s.timer>0?(s.$next_tip.show(),l.animate({width:e(".joyride-timer-indicator-wrap",s.$next_tip).outerWidth()},s.timer)):s.$next_tip.show()):/fade/i.test(s.tipAnimation)&&(l.outerWidth(0),s.timer>0?(s.$next_tip.fadeIn(s.tipAnimationFadeSpeed),s.$next_tip.show(),l.animate({width:e(".joyride-timer-indicator-wrap",s.$next_tip).outerWidth()},s.timer)):s.$next_tip.fadeIn(s.tipAnimationFadeSpeed)),s.$current_tip=s.$next_tip,e(".joyride-next-tip",s.$current_tip).focus(),o.tabbable(s.$current_tip)}else s.$li&&s.$target.length<1?o.show():o.end()}else s.paused=!0},is_phone:function(){return i?i.mq("only screen and (max-width: 767px)"):s.$window.width()<767?!0:!1},support_localstorage:function(){return i?i.localstorage:!!t.localStorage},hide:function(){s.modal&&s.expose&&o.un_expose(),s.modal||e(".joyride-modal-bg").hide(),s.$current_tip.hide(),s.postStepCallback(s.$li.index(),s.$current_tip)},set_li:function(e){e?(s.$li=s.$tip_content.eq(s.startOffset),o.set_next_tip(),s.$current_tip=s.$next_tip):(s.$li=s.$li.next(),o.set_next_tip()),o.set_target()},set_next_tip:function(){s.$next_tip=e(".joyride-tip-guide[data-index="+s.$li.index()+"]")},set_target:function(){var t=s.$li.attr("data-class"),n=s.$li.attr("data-id"),r=function(){return n?e(s.document.getElementById(n)):t?e("."+t).filter(":visible").first():e("body")};s.$target=r()},scroll_to:function(){var t,n;t=s.$window.height()/2,n=Math.ceil(s.$target.offset().top-t+s.$next_tip.outerHeight()),e("html, body").stop().animate({scrollTop:n},s.scrollSpeed)},paused:function(){return e.inArray(s.$li.index()+1,s.pauseAfter)===-1?!0:!1},destroy:function(){e.isEmptyObject(s)||s.$document.off(".joyride"),e(t).off(".joyride"),e(".joyride-close-tip, .joyride-next-tip, .joyride-modal-bg").off(".joyride"),e(".joyride-tip-guide, .joyride-modal-bg").remove(),clearTimeout(s.automate),s={}},restart:function(){s.autoStart?(o.hide(),s.$li=n,o.show("init")):(!s.startTimerOnClick&&s.timer>0?(o.show("init"),o.startTimer()):o.show("init"),s.autoStart=!0)},pos_default:function(t){var n=Math.ceil(s.$window.height()/2),r=s.$next_tip.offset(),i=e(".joyride-nub",s.$next_tip),u=Math.ceil(i.outerWidth()/2),a=Math.ceil(i.outerHeight()/2),f=t||!1;f&&(s.$next_tip.css("visibility","hidden"),s.$next_tip.show());if(!/body/i.test(s.$target.selector)){var l=s.tipSettings.tipAdjustmentY?parseInt(s.tipSettings.tipAdjustmentY):0,c=s.tipSettings.tipAdjustmentX?parseInt(s.tipSettings.tipAdjustmentX):0;o.bottom()?(s.$next_tip.css({top:s.$target.offset().top+a+s.$target.outerHeight()+l,left:s.$target.offset().left+c}),/right/i.test(s.tipSettings.nubPosition)&&s.$next_tip.css("left",s.$target.offset().left-s.$next_tip.outerWidth()+s.$target.outerWidth()),o.nub_position(i,s.tipSettings.nubPosition,"top")):o.top()?(s.$next_tip.css({top:s.$target.offset().top-s.$next_tip.outerHeight()-a+l,left:s.$target.offset().left+c}),o.nub_position(i,s.tipSettings.nubPosition,"bottom")):o.right()?(s.$next_tip.css({top:s.$target.offset().top+l,left:s.$target.outerWidth()+s.$target.offset().left+u+c}),o.nub_position(i,s.tipSettings.nubPosition,"left")):o.left()&&(s.$next_tip.css({top:s.$target.offset().top+l,left:s.$target.offset().left-s.$next_tip.outerWidth()-u+c}),o.nub_position(i,s.tipSettings.nubPosition,"right")),!o.visible(o.corners(s.$next_tip))&&s.attempts<s.tipSettings.tipLocationPattern.length&&(i.removeClass("bottom").removeClass("top").removeClass("right").removeClass("left"),s.tipSettings.tipLocation=s.tipSettings.tipLocationPattern[s.attempts],s.attempts++,o.pos_default(!0))}else s.$li.length&&o.pos_modal(i);f&&(s.$next_tip.hide(),s.$next_tip.css("visibility","visible"))},pos_phone:function(t){var n=s.$next_tip.outerHeight(),r=s.$next_tip.offset(),i=s.$target.outerHeight(),u=e(".joyride-nub",s.$next_tip),a=Math.ceil(u.outerHeight()/2),f=t||!1;u.removeClass("bottom").removeClass("top").removeClass("right").removeClass("left"),f&&(s.$next_tip.css("visibility","hidden"),s.$next_tip.show()),/body/i.test(s.$target.selector)?s.$li.length&&o.pos_modal(u):o.top()?(s.$next_tip.offset({top:s.$target.offset().top-n-a}),u.addClass("bottom")):(s.$next_tip.offset({top:s.$target.offset().top+i+a}),u.addClass("top")),f&&(s.$next_tip.hide(),s.$next_tip.css("visibility","visible"))},pos_modal:function(e){o.center(),e.hide(),o.show_modal()},show_modal:function(){e(".joyride-modal-bg").length<1&&e("body").append(s.template.modal).show(),/pop/i.test(s.tipAnimation)?e(".joyride-modal-bg").show():e(".joyride-modal-bg").fadeIn(s.tipAnimationFadeSpeed)},expose:function(){var n,r,i,u,a="expose-"+Math.floor(Math.random()*1e4);if(arguments.length>0&&arguments[0]instanceof e)i=arguments[0];else{if(!s.$target||!!/body/i.test(s.$target.selector))return!1;i=s.$target}if(i.length<1)return t.console&&console.error("element not valid",i),!1;n=e(s.template.expose),s.$body.append(n),n.css({top:i.offset().top,left:i.offset().left,width:i.outerWidth(!0),height:i.outerHeight(!0)}),r=e(s.template.exposeCover),u={zIndex:i.css("z-index"),position:i.css("position")},i.css("z-index",n.css("z-index")*1+1),u.position=="static"&&i.css("position","relative"),i.data("expose-css",u),r.css({top:i.offset().top,left:i.offset().left,width:i.outerWidth(!0),height:i.outerHeight(!0)}),s.$body.append(r),n.addClass(a),r.addClass(a),s.tipSettings.exposeClass&&(n.addClass(s.tipSettings.exposeClass),r.addClass(s.tipSettings.exposeClass)),i.data("expose",a),s.postExposeCallback(s.$li.index(),s.$next_tip,i),o.add_exposed(i)},un_expose:function(){var n,r,i,u,a=!1;if(arguments.length>0&&arguments[0]instanceof e)r=arguments[0];else{if(!s.$target||!!/body/i.test(s.$target.selector))return!1;r=s.$target}if(r.length<1)return t.console&&console.error("element not valid",r),!1;n=r.data("expose"),i=e("."+n),arguments.length>1&&(a=arguments[1]),a===!0?e(".joyride-expose-wrapper,.joyride-expose-cover").remove():i.remove(),u=r.data("expose-css"),u.zIndex=="auto"?r.css("z-index",""):r.css("z-index",u.zIndex),u.position!=r.css("position")&&(u.position=="static"?r.css("position",""):r.css("position",u.position)),r.removeData("expose"),r.removeData("expose-z-index"),o.remove_exposed(r)},add_exposed:function(t){s.exposed=s.exposed||[],t instanceof e?s.exposed.push(t[0]):typeof t=="string"&&s.exposed.push(t)},remove_exposed:function(t){var n;t instanceof e?n=t[0]:typeof t=="string"&&(n=t),s.exposed=s.exposed||[];for(var r=0;r<s.exposed.length;r++)if(s.exposed[r]==n){s.exposed.splice(r,1);return}},center:function(){var e=s.$window;return s.$next_tip.css({top:(e.height()-s.$next_tip.outerHeight())/2+e.scrollTop(),left:(e.width()-s.$next_tip.outerWidth())/2+e.scrollLeft()}),!0},bottom:function(){return/bottom/i.test(s.tipSettings.tipLocation)},top:function(){return/top/i.test(s.tipSettings.tipLocation)},right:function(){return/right/i.test(s.tipSettings.tipLocation)},left:function(){return/left/i.test(s.tipSettings.tipLocation)},corners:function(e){var t=s.$window,n=t.height()/2,r=Math.ceil(s.$target.offset().top-n+s.$next_tip.outerHeight()),i=t.width()+t.scrollLeft(),o=t.height()+r,u=t.height()+t.scrollTop(),a=t.scrollTop();return r<a&&(r<0?a=0:a=r),o>u&&(u=o),[e.offset().top<a,i<e.offset().left+e.outerWidth(),u<e.offset().top+e.outerHeight(),t.scrollLeft()>e.offset().left]},visible:function(e){var t=e.length;while(t--)if(e[t])return!1;return!0},nub_position:function(e,t,n){t==="auto"?e.addClass(n):e.addClass(t)},startTimer:function(){s.$li.length?s.automate=setTimeout(function(){o.hide(),o.show(),o.startTimer()},s.timer):clearTimeout(s.automate)},end:function(){s.cookieMonster&&e.cookie(s.cookieName,"ridden",{expires:365,domain:s.cookieDomain,path:s.cookiePath}),s.localStorage&&localStorage.setItem(s.localStorageKey,!0),s.timer>0&&clearTimeout(s.automate),s.modal&&s.expose&&o.un_expose(),s.$current_tip&&s.$current_tip.hide(),s.$li&&(s.postStepCallback(s.$li.index(),s.$current_tip),s.postRideCallback(s.$li.index(),s.$current_tip)),e(".joyride-modal-bg").hide()},jquery_check:function(){return e.isFunction(e.fn.on)?!0:(e.fn.on=function(e,t,n){return this.delegate(t,e,n)},e.fn.off=function(e,t,n){return this.undelegate(t,e,n)},!1)},outerHTML:function(e){return e.outerHTML||(new XMLSerializer).serializeToString(e)},version:function(){return s.version},tabbable:function(t){e(t).on("keydown",function(n){if(!n.isDefaultPrevented()&&n.keyCode&&n.keyCode===27){n.preventDefault(),o.end();return}if(n.keyCode!==9)return;var r=e(t).find(":tabbable"),i=r.filter(":first"),s=r.filter(":last");n.target===s[0]&&!n.shiftKey?(i.focus(1),n.preventDefault()):n.target===i[0]&&n.shiftKey&&(s.focus(1),n.preventDefault())})}};e.fn.joyride=function(t){if(o[t])return o[t].apply(this,Array.prototype.slice.call(arguments,1));if(typeof t=="object"||!t)return o.init.apply(this,arguments);e.error("Method "+t+" does not exist on jQuery.joyride")}})(jQuery,this);
;
/**
 * @file
 * Attaches behaviors for the Tour module's toolbar tab.
 */

(function ($, Backbone, Drupal, document) {

  'use strict';

  var queryString = decodeURI(window.location.search);

  /**
   * Attaches the tour's toolbar tab behavior.
   *
   * It uses the query string for:
   * - tour: When ?tour=1 is present, the tour will start automatically after
   *   the page has loaded.
   * - tips: Pass ?tips=class in the url to filter the available tips to the
   *   subset which match the given class.
   *
   * @example
   * http://example.com/foo?tour=1&tips=bar
   *
   * @type {Drupal~behavior}
   *
   * @prop {Drupal~behaviorAttach} attach
   *   Attach tour functionality on `tour` events.
   */
  Drupal.behaviors.tour = {
    attach: function (context) {
      $('body').once('tour').each(function () {
        var model = new Drupal.tour.models.StateModel();
        new Drupal.tour.views.ToggleTourView({
          el: $(context).find('#toolbar-tab-tour'),
          model: model
        });

        model
          // Allow other scripts to respond to tour events.
          .on('change:isActive', function (model, isActive) {
            $(document).trigger((isActive) ? 'drupalTourStarted' : 'drupalTourStopped');
          })
          // Initialization: check whether a tour is available on the current
          // page.
          .set('tour', $(context).find('ol#tour'));

        // Start the tour immediately if toggled via query string.
        if (/tour=?/i.test(queryString)) {
          model.set('isActive', true);
        }
      });
    }
  };

  /**
   * @namespace
   */
  Drupal.tour = Drupal.tour || {

    /**
     * @namespace Drupal.tour.models
     */
    models: {},

    /**
     * @namespace Drupal.tour.views
     */
    views: {}
  };

  /**
   * Backbone Model for tours.
   *
   * @constructor
   *
   * @augments Backbone.Model
   */
  Drupal.tour.models.StateModel = Backbone.Model.extend(/** @lends Drupal.tour.models.StateModel# */{

    /**
     * @type {object}
     */
    defaults: /** @lends Drupal.tour.models.StateModel# */{

      /**
       * Indicates whether the Drupal root window has a tour.
       *
       * @type {Array}
       */
      tour: [],

      /**
       * Indicates whether the tour is currently running.
       *
       * @type {bool}
       */
      isActive: false,

      /**
       * Indicates which tour is the active one (necessary to cleanly stop).
       *
       * @type {Array}
       */
      activeTour: []
    }
  });

  Drupal.tour.views.ToggleTourView = Backbone.View.extend(/** @lends Drupal.tour.views.ToggleTourView# */{

    /**
     * @type {object}
     */
    events: {click: 'onClick'},

    /**
     * Handles edit mode toggle interactions.
     *
     * @constructs
     *
     * @augments Backbone.View
     */
    initialize: function () {
      this.listenTo(this.model, 'change:tour change:isActive', this.render);
      this.listenTo(this.model, 'change:isActive', this.toggleTour);
    },

    /**
     * @inheritdoc
     *
     * @return {Drupal.tour.views.ToggleTourView}
     *   The `ToggleTourView` view.
     */
    render: function () {
      // Render the visibility.
      this.$el.toggleClass('hidden', this._getTour().length === 0);
      // Render the state.
      var isActive = this.model.get('isActive');
      this.$el.find('button')
        .toggleClass('is-active', isActive)
        .prop('aria-pressed', isActive);
      return this;
    },

    /**
     * Model change handler; starts or stops the tour.
     */
    toggleTour: function () {
      if (this.model.get('isActive')) {
        var $tour = this._getTour();
        this._removeIrrelevantTourItems($tour, this._getDocument());
        var that = this;
        if ($tour.find('li').length) {
          $tour.joyride({
            autoStart: true,
            postRideCallback: function () { that.model.set('isActive', false); },
            // HTML segments for tip layout.
            template: {
              link: '<a href=\"#close\" class=\"joyride-close-tip\">&times;</a>',
              button: '<a href=\"#\" class=\"button button--primary joyride-next-tip\"></a>'
            }
          });
          this.model.set({isActive: true, activeTour: $tour});
        }
      }
      else {
        this.model.get('activeTour').joyride('destroy');
        this.model.set({isActive: false, activeTour: []});
      }
    },

    /**
     * Toolbar tab click event handler; toggles isActive.
     *
     * @param {jQuery.Event} event
     *   The click event.
     */
    onClick: function (event) {
      this.model.set('isActive', !this.model.get('isActive'));
      event.preventDefault();
      event.stopPropagation();
    },

    /**
     * Gets the tour.
     *
     * @return {jQuery}
     *   A jQuery element pointing to a `<ol>` containing tour items.
     */
    _getTour: function () {
      return this.model.get('tour');
    },

    /**
     * Gets the relevant document as a jQuery element.
     *
     * @return {jQuery}
     *   A jQuery element pointing to the document within which a tour would be
     *   started given the current state.
     */
    _getDocument: function () {
      return $(document);
    },

    /**
     * Removes tour items for elements that don't have matching page elements.
     *
     * Or that are explicitly filtered out via the 'tips' query string.
     *
     * @example
     * <caption>This will filter out tips that do not have a matching
     * page element or don't have the "bar" class.</caption>
     * http://example.com/foo?tips=bar
     *
     * @param {jQuery} $tour
     *   A jQuery element pointing to a `<ol>` containing tour items.
     * @param {jQuery} $document
     *   A jQuery element pointing to the document within which the elements
     *   should be sought.
     *
     * @see Drupal.tour.views.ToggleTourView#_getDocument
     */
    _removeIrrelevantTourItems: function ($tour, $document) {
      var removals = false;
      var tips = /tips=([^&]+)/.exec(queryString);
      $tour
        .find('li')
        .each(function () {
          var $this = $(this);
          var itemId = $this.attr('data-id');
          var itemClass = $this.attr('data-class');
          // If the query parameter 'tips' is set, remove all tips that don't
          // have the matching class.
          if (tips && !$(this).hasClass(tips[1])) {
            removals = true;
            $this.remove();
            return;
          }
          // Remove tip from the DOM if there is no corresponding page element.
          if ((!itemId && !itemClass) ||
            (itemId && $document.find('#' + itemId).length) ||
            (itemClass && $document.find('.' + itemClass).length)) {
            return;
          }
          removals = true;
          $this.remove();
        });

      // If there were removals, we'll have to do some clean-up.
      if (removals) {
        var total = $tour.find('li').length;
        if (!total) {
          this.model.set({tour: []});
        }

        $tour
          .find('li')
          // Rebuild the progress data.
          .each(function (index) {
            var progress = Drupal.t('!tour_item of !total', {'!tour_item': index + 1, '!total': total});
            $(this).find('.tour-progress').text(progress);
          })
          // Update the last item to have "End tour" as the button.
          .eq(-1)
          .attr('data-text', Drupal.t('End tour'));
      }
    }

  });

})(jQuery, Backbone, Drupal, document);
;
/**
 * @file
 * Manages page tabbing modifications made by modules.
 */

/**
 * Allow modules to respond to the constrain event.
 *
 * @event drupalTabbingConstrained
 */

/**
 * Allow modules to respond to the tabbingContext release event.
 *
 * @event drupalTabbingContextReleased
 */

/**
 * Allow modules to respond to the constrain event.
 *
 * @event drupalTabbingContextActivated
 */

/**
 * Allow modules to respond to the constrain event.
 *
 * @event drupalTabbingContextDeactivated
 */

(function ($, Drupal) {

  'use strict';

  /**
   * Provides an API for managing page tabbing order modifications.
   *
   * @constructor Drupal~TabbingManager
   */
  function TabbingManager() {

    /**
     * Tabbing sets are stored as a stack. The active set is at the top of the
     * stack. We use a JavaScript array as if it were a stack; we consider the
     * first element to be the bottom and the last element to be the top. This
     * allows us to use JavaScript's built-in Array.push() and Array.pop()
     * methods.
     *
     * @type {Array.<Drupal~TabbingContext>}
     */
    this.stack = [];
  }

  /**
   * Add public methods to the TabbingManager class.
   */
  $.extend(TabbingManager.prototype, /** @lends Drupal~TabbingManager# */{

    /**
     * Constrain tabbing to the specified set of elements only.
     *
     * Makes elements outside of the specified set of elements unreachable via
     * the tab key.
     *
     * @param {jQuery} elements
     *   The set of elements to which tabbing should be constrained. Can also
     *   be a jQuery-compatible selector string.
     *
     * @return {Drupal~TabbingContext}
     *
     * @fires event:drupalTabbingConstrained
     */
    constrain: function (elements) {
      // Deactivate all tabbingContexts to prepare for the new constraint. A
      // tabbingContext instance will only be reactivated if the stack is
      // unwound to it in the _unwindStack() method.
      var il = this.stack.length;
      for (var i = 0; i < il; i++) {
        this.stack[i].deactivate();
      }

      // The "active tabbing set" are the elements tabbing should be constrained
      // to.
      var $elements = $(elements).find(':tabbable').addBack(':tabbable');

      var tabbingContext = new TabbingContext({
        // The level is the current height of the stack before this new
        // tabbingContext is pushed on top of the stack.
        level: this.stack.length,
        $tabbableElements: $elements
      });

      this.stack.push(tabbingContext);

      // Activates the tabbingContext; this will manipulate the DOM to constrain
      // tabbing.
      tabbingContext.activate();

      // Allow modules to respond to the constrain event.
      $(document).trigger('drupalTabbingConstrained', tabbingContext);

      return tabbingContext;
    },

    /**
     * Restores a former tabbingContext when an active one is released.
     *
     * The TabbingManager stack of tabbingContext instances will be unwound
     * from the top-most released tabbingContext down to the first non-released
     * tabbingContext instance. This non-released instance is then activated.
     */
    release: function () {
      // Unwind as far as possible: find the topmost non-released
      // tabbingContext.
      var toActivate = this.stack.length - 1;
      while (toActivate >= 0 && this.stack[toActivate].released) {
        toActivate--;
      }

      // Delete all tabbingContexts after the to be activated one. They have
      // already been deactivated, so their effect on the DOM has been reversed.
      this.stack.splice(toActivate + 1);

      // Get topmost tabbingContext, if one exists, and activate it.
      if (toActivate >= 0) {
        this.stack[toActivate].activate();
      }
    },

    /**
     * Makes all elements outside of the tabbingContext's set untabbable.
     *
     * Elements made untabbable have their original tabindex and autofocus
     * values stored so that they might be restored later when this
     * tabbingContext is deactivated.
     *
     * @param {Drupal~TabbingContext} tabbingContext
     *   The TabbingContext instance that has been activated.
     */
    activate: function (tabbingContext) {
      var $set = tabbingContext.$tabbableElements;
      var level = tabbingContext.level;
      // Determine which elements are reachable via tabbing by default.
      var $disabledSet = $(':tabbable')
        // Exclude elements of the active tabbing set.
        .not($set);
      // Set the disabled set on the tabbingContext.
      tabbingContext.$disabledElements = $disabledSet;
      // Record the tabindex for each element, so we can restore it later.
      var il = $disabledSet.length;
      for (var i = 0; i < il; i++) {
        this.recordTabindex($disabledSet.eq(i), level);
      }
      // Make all tabbable elements outside of the active tabbing set
      // unreachable.
      $disabledSet
        .prop('tabindex', -1)
        .prop('autofocus', false);

      // Set focus on an element in the tabbingContext's set of tabbable
      // elements. First, check if there is an element with an autofocus
      // attribute. Select the last one from the DOM order.
      var $hasFocus = $set.filter('[autofocus]').eq(-1);
      // If no element in the tabbable set has an autofocus attribute, select
      // the first element in the set.
      if ($hasFocus.length === 0) {
        $hasFocus = $set.eq(0);
      }
      $hasFocus.trigger('focus');
    },

    /**
     * Restores that tabbable state of a tabbingContext's disabled elements.
     *
     * Elements that were made untabbable have their original tabindex and
     * autofocus values restored.
     *
     * @param {Drupal~TabbingContext} tabbingContext
     *   The TabbingContext instance that has been deactivated.
     */
    deactivate: function (tabbingContext) {
      var $set = tabbingContext.$disabledElements;
      var level = tabbingContext.level;
      var il = $set.length;
      for (var i = 0; i < il; i++) {
        this.restoreTabindex($set.eq(i), level);
      }
    },

    /**
     * Records the tabindex and autofocus values of an untabbable element.
     *
     * @param {jQuery} $el
     *   The set of elements that have been disabled.
     * @param {number} level
     *   The stack level for which the tabindex attribute should be recorded.
     */
    recordTabindex: function ($el, level) {
      var tabInfo = $el.data('drupalOriginalTabIndices') || {};
      tabInfo[level] = {
        tabindex: $el[0].getAttribute('tabindex'),
        autofocus: $el[0].hasAttribute('autofocus')
      };
      $el.data('drupalOriginalTabIndices', tabInfo);
    },

    /**
     * Restores the tabindex and autofocus values of a reactivated element.
     *
     * @param {jQuery} $el
     *   The element that is being reactivated.
     * @param {number} level
     *   The stack level for which the tabindex attribute should be restored.
     */
    restoreTabindex: function ($el, level) {
      var tabInfo = $el.data('drupalOriginalTabIndices');
      if (tabInfo && tabInfo[level]) {
        var data = tabInfo[level];
        if (data.tabindex) {
          $el[0].setAttribute('tabindex', data.tabindex);
        }
        // If the element did not have a tabindex at this stack level then
        // remove it.
        else {
          $el[0].removeAttribute('tabindex');
        }
        if (data.autofocus) {
          $el[0].setAttribute('autofocus', 'autofocus');
        }

        // Clean up $.data.
        if (level === 0) {
          // Remove all data.
          $el.removeData('drupalOriginalTabIndices');
        }
        else {
          // Remove the data for this stack level and higher.
          var levelToDelete = level;
          while (tabInfo.hasOwnProperty(levelToDelete)) {
            delete tabInfo[levelToDelete];
            levelToDelete++;
          }
          $el.data('drupalOriginalTabIndices', tabInfo);
        }
      }
    }
  });

  /**
   * Stores a set of tabbable elements.
   *
   * This constraint can be removed with the release() method.
   *
   * @constructor Drupal~TabbingContext
   *
   * @param {object} options
   *   A set of initiating values
   * @param {number} options.level
   *   The level in the TabbingManager's stack of this tabbingContext.
   * @param {jQuery} options.$tabbableElements
   *   The DOM elements that should be reachable via the tab key when this
   *   tabbingContext is active.
   * @param {jQuery} options.$disabledElements
   *   The DOM elements that should not be reachable via the tab key when this
   *   tabbingContext is active.
   * @param {bool} options.released
   *   A released tabbingContext can never be activated again. It will be
   *   cleaned up when the TabbingManager unwinds its stack.
   * @param {bool} options.active
   *   When true, the tabbable elements of this tabbingContext will be reachable
   *   via the tab key and the disabled elements will not. Only one
   *   tabbingContext can be active at a time.
   */
  function TabbingContext(options) {

    $.extend(this, /** @lends Drupal~TabbingContext# */{

      /**
       * @type {?number}
       */
      level: null,

      /**
       * @type {jQuery}
       */
      $tabbableElements: $(),

      /**
       * @type {jQuery}
       */
      $disabledElements: $(),

      /**
       * @type {bool}
       */
      released: false,

      /**
       * @type {bool}
       */
      active: false
    }, options);
  }

  /**
   * Add public methods to the TabbingContext class.
   */
  $.extend(TabbingContext.prototype, /** @lends Drupal~TabbingContext# */{

    /**
     * Releases this TabbingContext.
     *
     * Once a TabbingContext object is released, it can never be activated
     * again.
     *
     * @fires event:drupalTabbingContextReleased
     */
    release: function () {
      if (!this.released) {
        this.deactivate();
        this.released = true;
        Drupal.tabbingManager.release(this);
        // Allow modules to respond to the tabbingContext release event.
        $(document).trigger('drupalTabbingContextReleased', this);
      }
    },

    /**
     * Activates this TabbingContext.
     *
     * @fires event:drupalTabbingContextActivated
     */
    activate: function () {
      // A released TabbingContext object can never be activated again.
      if (!this.active && !this.released) {
        this.active = true;
        Drupal.tabbingManager.activate(this);
        // Allow modules to respond to the constrain event.
        $(document).trigger('drupalTabbingContextActivated', this);
      }
    },

    /**
     * Deactivates this TabbingContext.
     *
     * @fires event:drupalTabbingContextDeactivated
     */
    deactivate: function () {
      if (this.active) {
        this.active = false;
        Drupal.tabbingManager.deactivate(this);
        // Allow modules to respond to the constrain event.
        $(document).trigger('drupalTabbingContextDeactivated', this);
      }
    }
  });

  // Mark this behavior as processed on the first pass and return if it is
  // already processed.
  if (Drupal.tabbingManager) {
    return;
  }

  /**
   * @type {Drupal~TabbingManager}
   */
  Drupal.tabbingManager = new TabbingManager();

}(jQuery, Drupal));
;
/**
 * @file
 * Attaches behaviors for the Contextual module's edit toolbar tab.
 */

(function ($, Drupal, Backbone) {

  'use strict';

  var strings = {
    tabbingReleased: Drupal.t('Tabbing is no longer constrained by the Contextual module.'),
    tabbingConstrained: Drupal.t('Tabbing is constrained to a set of @contextualsCount and the edit mode toggle.'),
    pressEsc: Drupal.t('Press the esc key to exit.')
  };

  /**
   * Initializes a contextual link: updates its DOM, sets up model and views.
   *
   * @param {HTMLElement} context
   *   A contextual links DOM element as rendered by the server.
   */
  function initContextualToolbar(context) {
    if (!Drupal.contextual || !Drupal.contextual.collection) {
      return;
    }

    var contextualToolbar = Drupal.contextualToolbar;
    var model = contextualToolbar.model = new contextualToolbar.StateModel({
      // Checks whether localStorage indicates we should start in edit mode
      // rather than view mode.
      // @see Drupal.contextualToolbar.VisualView.persist
      isViewing: localStorage.getItem('Drupal.contextualToolbar.isViewing') !== 'false'
    }, {
      contextualCollection: Drupal.contextual.collection
    });

    var viewOptions = {
      el: $('.toolbar .toolbar-bar .contextual-toolbar-tab'),
      model: model,
      strings: strings
    };
    new contextualToolbar.VisualView(viewOptions);
    new contextualToolbar.AuralView(viewOptions);
  }

  /**
   * Attaches contextual's edit toolbar tab behavior.
   *
   * @type {Drupal~behavior}
   *
   * @prop {Drupal~behaviorAttach} attach
   *   Attaches contextual toolbar behavior on a contextualToolbar-init event.
   */
  Drupal.behaviors.contextualToolbar = {
    attach: function (context) {
      if ($('body').once('contextualToolbar-init').length) {
        initContextualToolbar(context);
      }
    }
  };

  /**
   * Namespace for the contextual toolbar.
   *
   * @namespace
   */
  Drupal.contextualToolbar = {

    /**
     * The {@link Drupal.contextualToolbar.StateModel} instance.
     *
     * @type {?Drupal.contextualToolbar.StateModel}
     */
    model: null
  };

})(jQuery, Drupal, Backbone);
;
/**
 * @file
 * A Backbone Model for the state of Contextual module's edit toolbar tab.
 */

(function (Drupal, Backbone) {

  'use strict';

  Drupal.contextualToolbar.StateModel = Backbone.Model.extend(/** @lends Drupal.contextualToolbar.StateModel# */{

    /**
     * @type {object}
     *
     * @prop {bool} isViewing
     * @prop {bool} isVisible
     * @prop {number} contextualCount
     * @prop {Drupal~TabbingContext} tabbingContext
     */
    defaults: /** @lends Drupal.contextualToolbar.StateModel# */{

      /**
       * Indicates whether the toggle is currently in "view" or "edit" mode.
       *
       * @type {bool}
       */
      isViewing: true,

      /**
       * Indicates whether the toggle should be visible or hidden. Automatically
       * calculated, depends on contextualCount.
       *
       * @type {bool}
       */
      isVisible: false,

      /**
       * Tracks how many contextual links exist on the page.
       *
       * @type {number}
       */
      contextualCount: 0,

      /**
       * A TabbingContext object as returned by {@link Drupal~TabbingManager}:
       * the set of tabbable elements when edit mode is enabled.
       *
       * @type {?Drupal~TabbingContext}
       */
      tabbingContext: null
    },

    /**
     * Models the state of the edit mode toggle.
     *
     * @constructs
     *
     * @augments Backbone.Model
     *
     * @param {object} attrs
     *   Attributes for the backbone model.
     * @param {object} options
     *   An object with the following option:
     * @param {Backbone.collection} options.contextualCollection
     *   The collection of {@link Drupal.contextual.StateModel} models that
     *   represent the contextual links on the page.
     */
    initialize: function (attrs, options) {
      // Respond to new/removed contextual links.
      this.listenTo(options.contextualCollection, 'reset remove add', this.countContextualLinks);
      this.listenTo(options.contextualCollection, 'add', this.lockNewContextualLinks);

      // Automatically determine visibility.
      this.listenTo(this, 'change:contextualCount', this.updateVisibility);

      // Whenever edit mode is toggled, lock all contextual links.
      this.listenTo(this, 'change:isViewing', function (model, isViewing) {
        options.contextualCollection.each(function (contextualModel) {
          contextualModel.set('isLocked', !isViewing);
        });
      });
    },

    /**
     * Tracks the number of contextual link models in the collection.
     *
     * @param {Drupal.contextual.StateModel} contextualModel
     *   The contextual links model that was added or removed.
     * @param {Backbone.Collection} contextualCollection
     *    The collection of contextual link models.
     */
    countContextualLinks: function (contextualModel, contextualCollection) {
      this.set('contextualCount', contextualCollection.length);
    },

    /**
     * Lock newly added contextual links if edit mode is enabled.
     *
     * @param {Drupal.contextual.StateModel} contextualModel
     *   The contextual links model that was added.
     * @param {Backbone.Collection} [contextualCollection]
     *    The collection of contextual link models.
     */
    lockNewContextualLinks: function (contextualModel, contextualCollection) {
      if (!this.get('isViewing')) {
        contextualModel.set('isLocked', true);
      }
    },

    /**
     * Automatically updates visibility of the view/edit mode toggle.
     */
    updateVisibility: function () {
      this.set('isVisible', this.get('contextualCount') > 0);
    }

  });

})(Drupal, Backbone);
;
/**
 * @file
 * A Backbone View that provides the aural view of the edit mode toggle.
 */

(function ($, Drupal, Backbone, _) {

  'use strict';

  Drupal.contextualToolbar.AuralView = Backbone.View.extend(/** @lends Drupal.contextualToolbar.AuralView# */{

    /**
     * Tracks whether the tabbing constraint announcement has been read once.
     *
     * @type {bool}
     */
    announcedOnce: false,

    /**
     * Renders the aural view of the edit mode toggle (screen reader support).
     *
     * @constructs
     *
     * @augments Backbone.View
     *
     * @param {object} options
     *   Options for the view.
     */
    initialize: function (options) {
      this.options = options;

      this.listenTo(this.model, 'change', this.render);
      this.listenTo(this.model, 'change:isViewing', this.manageTabbing);

      $(document).on('keyup', _.bind(this.onKeypress, this));
    },

    /**
     * @inheritdoc
     *
     * @return {Drupal.contextualToolbar.AuralView}
     *   The current contextual toolbar aural view.
     */
    render: function () {
      // Render the state.
      this.$el.find('button').attr('aria-pressed', !this.model.get('isViewing'));

      return this;
    },

    /**
     * Limits tabbing to the contextual links and edit mode toolbar tab.
     */
    manageTabbing: function () {
      var tabbingContext = this.model.get('tabbingContext');
      // Always release an existing tabbing context.
      if (tabbingContext) {
        tabbingContext.release();
        Drupal.announce(this.options.strings.tabbingReleased);
      }
      // Create a new tabbing context when edit mode is enabled.
      if (!this.model.get('isViewing')) {
        tabbingContext = Drupal.tabbingManager.constrain($('.contextual-toolbar-tab, .contextual'));
        this.model.set('tabbingContext', tabbingContext);
        this.announceTabbingConstraint();
        this.announcedOnce = true;
      }
    },

    /**
     * Announces the current tabbing constraint.
     */
    announceTabbingConstraint: function () {
      var strings = this.options.strings;
      Drupal.announce(Drupal.formatString(strings.tabbingConstrained, {
        '@contextualsCount': Drupal.formatPlural(Drupal.contextual.collection.length, '@count contextual link', '@count contextual links')
      }));
      Drupal.announce(strings.pressEsc);
    },

    /**
     * Responds to esc and tab key press events.
     *
     * @param {jQuery.Event} event
     *   The keypress event.
     */
    onKeypress: function (event) {
      // The first tab key press is tracked so that an annoucement about tabbing
      // constraints can be raised if edit mode is enabled when the page is
      // loaded.
      if (!this.announcedOnce && event.keyCode === 9 && !this.model.get('isViewing')) {
        this.announceTabbingConstraint();
        // Set announce to true so that this conditional block won't run again.
        this.announcedOnce = true;
      }
      // Respond to the ESC key. Exit out of edit mode.
      if (event.keyCode === 27) {
        this.model.set('isViewing', true);
      }
    }

  });

})(jQuery, Drupal, Backbone, _);
;
/**
 * @file
 * A Backbone View that provides the visual view of the edit mode toggle.
 */

(function (Drupal, Backbone) {

  'use strict';

  Drupal.contextualToolbar.VisualView = Backbone.View.extend(/** @lends Drupal.contextualToolbar.VisualView# */{

    /**
     * Events for the Backbone view.
     *
     * @return {object}
     *   A mapping of events to be used in the view.
     */
    events: function () {
      // Prevents delay and simulated mouse events.
      var touchEndToClick = function (event) {
        event.preventDefault();
        event.target.click();
      };

      return {
        click: function () {
          this.model.set('isViewing', !this.model.get('isViewing'));
        },
        touchend: touchEndToClick
      };
    },

    /**
     * Renders the visual view of the edit mode toggle.
     *
     * Listens to mouse & touch and handles edit mode toggle interactions.
     *
     * @constructs
     *
     * @augments Backbone.View
     */
    initialize: function () {
      this.listenTo(this.model, 'change', this.render);
      this.listenTo(this.model, 'change:isViewing', this.persist);
    },

    /**
     * @inheritdoc
     *
     * @return {Drupal.contextualToolbar.VisualView}
     *   The current contextual toolbar visual view.
     */
    render: function () {
      // Render the visibility.
      this.$el.toggleClass('hidden', !this.model.get('isVisible'));
      // Render the state.
      this.$el.find('button').toggleClass('is-active', !this.model.get('isViewing'));

      return this;
    },

    /**
     * Model change handler; persists the isViewing value to localStorage.
     *
     * `isViewing === true` is the default, so only stores in localStorage when
     * it's not the default value (i.e. false).
     *
     * @param {Drupal.contextualToolbar.StateModel} model
     *   A {@link Drupal.contextualToolbar.StateModel} model.
     * @param {bool} isViewing
     *   The value of the isViewing attribute in the model.
     */
    persist: function (model, isViewing) {
      if (!isViewing) {
        localStorage.setItem('Drupal.contextualToolbar.isViewing', 'false');
      }
      else {
        localStorage.removeItem('Drupal.contextualToolbar.isViewing');
      }
    }

  });

})(Drupal, Backbone);
;
/**
 * @file
 * Replaces the home link in toolbar with a back to site link.
 */

(function ($, Drupal, drupalSettings) {

  'use strict';

  var pathInfo = drupalSettings.path;
  var escapeAdminPath = sessionStorage.getItem('escapeAdminPath');
  var windowLocation = window.location;

  // Saves the last non-administrative page in the browser to be able to link
  // back to it when browsing administrative pages. If there is a destination
  // parameter there is not need to save the current path because the page is
  // loaded within an existing "workflow".
  if (!pathInfo.currentPathIsAdmin && !/destination=/.test(windowLocation.search)) {
    sessionStorage.setItem('escapeAdminPath', windowLocation);
  }

  /**
   * Replaces the "Home" link with "Back to site" link.
   *
   * Back to site link points to the last non-administrative page the user
   * visited within the same browser tab.
   *
   * @type {Drupal~behavior}
   *
   * @prop {Drupal~behaviorAttach} attach
   *   Attaches the replacement functionality to the toolbar-escape-admin element.
   */
  Drupal.behaviors.escapeAdmin = {
    attach: function () {
      var $toolbarEscape = $('[data-toolbar-escape-admin]').once('escapeAdmin');
      if ($toolbarEscape.length && pathInfo.currentPathIsAdmin) {
        if (escapeAdminPath !== null) {
          $toolbarEscape.attr('href', escapeAdminPath);
        }
        else {
          $toolbarEscape.text(Drupal.t('Home'));
        }
        $toolbarEscape.closest('.toolbar-tab').removeClass('hidden');
      }
    }
  };

})(jQuery, Drupal, drupalSettings);
;
