--- /dev/null
+/**
+ * @file
+ * Handles AJAX fetching of views, including filter submission and response.
+ */
+
+(function ($, Drupal, drupalSettings) {
+ /**
+ * Attaches the AJAX behavior to exposed filters forms and key View links.
+ *
+ * @type {Drupal~behavior}
+ *
+ * @prop {Drupal~behaviorAttach} attach
+ * Attaches ajaxView functionality to relevant elements.
+ */
+ Drupal.behaviors.ViewsAjaxView = {};
+ Drupal.behaviors.ViewsAjaxView.attach = function () {
+ if (drupalSettings && drupalSettings.views && drupalSettings.views.ajaxViews) {
+ const ajaxViews = drupalSettings.views.ajaxViews;
+ for (const i in ajaxViews) {
+ if (ajaxViews.hasOwnProperty(i)) {
+ Drupal.views.instances[i] = new Drupal.views.ajaxView(ajaxViews[i]);
+ }
+ }
+ }
+ };
+
+ /**
+ * @namespace
+ */
+ Drupal.views = {};
+
+ /**
+ * @type {object.<string, Drupal.views.ajaxView>}
+ */
+ Drupal.views.instances = {};
+
+ /**
+ * Javascript object for a certain view.
+ *
+ * @constructor
+ *
+ * @param {object} settings
+ * Settings object for the ajax view.
+ * @param {string} settings.view_dom_id
+ * The DOM id of the view.
+ */
+ Drupal.views.ajaxView = function (settings) {
+ const selector = `.js-view-dom-id-${settings.view_dom_id}`;
+ this.$view = $(selector);
+
+ // Retrieve the path to use for views' ajax.
+ let ajax_path = drupalSettings.views.ajax_path;
+
+ // If there are multiple views this might've ended up showing up multiple
+ // times.
+ if (ajax_path.constructor.toString().indexOf('Array') !== -1) {
+ ajax_path = ajax_path[0];
+ }
+
+ // Check if there are any GET parameters to send to views.
+ let queryString = window.location.search || '';
+ if (queryString !== '') {
+ // Remove the question mark and Drupal path component if any.
+ queryString = queryString.slice(1).replace(/q=[^&]+&?|&?render=[^&]+/, '');
+ if (queryString !== '') {
+ // If there is a '?' in ajax_path, clean url are on and & should be
+ // used to add parameters.
+ queryString = ((/\?/.test(ajax_path)) ? '&' : '?') + queryString;
+ }
+ }
+
+ this.element_settings = {
+ url: ajax_path + queryString,
+ submit: settings,
+ setClick: true,
+ event: 'click',
+ selector,
+ progress: { type: 'fullscreen' },
+ };
+
+ this.settings = settings;
+
+ // Add the ajax to exposed forms.
+ this.$exposed_form = $(`form#views-exposed-form-${settings.view_name.replace(/_/g, '-')}-${settings.view_display_id.replace(/_/g, '-')}`);
+ this.$exposed_form.once('exposed-form').each($.proxy(this.attachExposedFormAjax, this));
+
+ // Add the ajax to pagers.
+ this.$view
+ // Don't attach to nested views. Doing so would attach multiple behaviors
+ // to a given element.
+ .filter($.proxy(this.filterNestedViews, this))
+ .once('ajax-pager').each($.proxy(this.attachPagerAjax, this));
+
+ // Add a trigger to update this view specifically. In order to trigger a
+ // refresh use the following code.
+ //
+ // @code
+ // $('.view-name').trigger('RefreshView');
+ // @endcode
+ const self_settings = $.extend({}, this.element_settings, {
+ event: 'RefreshView',
+ base: this.selector,
+ element: this.$view.get(0),
+ });
+ this.refreshViewAjax = Drupal.ajax(self_settings);
+ };
+
+ /**
+ * @method
+ */
+ Drupal.views.ajaxView.prototype.attachExposedFormAjax = function () {
+ const that = this;
+ this.exposedFormAjax = [];
+ // Exclude the reset buttons so no AJAX behaviours are bound. Many things
+ // break during the form reset phase if using AJAX.
+ $('input[type=submit], input[type=image]', this.$exposed_form).not('[data-drupal-selector=edit-reset]').each(function (index) {
+ const self_settings = $.extend({}, that.element_settings, {
+ base: $(this).attr('id'),
+ element: this,
+ });
+ that.exposedFormAjax[index] = Drupal.ajax(self_settings);
+ });
+ };
+
+ /**
+ * @return {bool}
+ * If there is at least one parent with a view class return false.
+ */
+ Drupal.views.ajaxView.prototype.filterNestedViews = function () {
+ // If there is at least one parent with a view class, this view
+ // is nested (e.g., an attachment). Bail.
+ return !this.$view.parents('.view').length;
+ };
+
+ /**
+ * Attach the ajax behavior to each link.
+ */
+ Drupal.views.ajaxView.prototype.attachPagerAjax = function () {
+ this.$view.find('ul.js-pager__items > li > a, th.views-field a, .attachment .views-summary a')
+ .each($.proxy(this.attachPagerLinkAjax, this));
+ };
+
+ /**
+ * Attach the ajax behavior to a singe link.
+ *
+ * @param {string} [id]
+ * The ID of the link.
+ * @param {HTMLElement} link
+ * The link element.
+ */
+ Drupal.views.ajaxView.prototype.attachPagerLinkAjax = function (id, link) {
+ const $link = $(link);
+ const viewData = {};
+ const href = $link.attr('href');
+ // Construct an object using the settings defaults and then overriding
+ // with data specific to the link.
+ $.extend(
+ viewData,
+ this.settings,
+ Drupal.Views.parseQueryString(href),
+ // Extract argument data from the URL.
+ Drupal.Views.parseViewArgs(href, this.settings.view_base_path),
+ );
+
+ const self_settings = $.extend({}, this.element_settings, {
+ submit: viewData,
+ base: false,
+ element: link,
+ });
+ this.pagerAjax = Drupal.ajax(self_settings);
+ };
+
+ /**
+ * Views scroll to top ajax command.
+ *
+ * @param {Drupal.Ajax} [ajax]
+ * A {@link Drupal.ajax} object.
+ * @param {object} response
+ * Ajax response.
+ * @param {string} response.selector
+ * Selector to use.
+ */
+ Drupal.AjaxCommands.prototype.viewsScrollTop = function (ajax, response) {
+ // Scroll to the top of the view. This will allow users
+ // to browse newly loaded content after e.g. clicking a pager
+ // link.
+ const offset = $(response.selector).offset();
+ // We can't guarantee that the scrollable object should be
+ // the body, as the view could be embedded in something
+ // more complex such as a modal popup. Recurse up the DOM
+ // and scroll the first element that has a non-zero top.
+ let scrollTarget = response.selector;
+ while ($(scrollTarget).scrollTop() === 0 && $(scrollTarget).parent()) {
+ scrollTarget = $(scrollTarget).parent();
+ }
+ // Only scroll upward.
+ if (offset.top - 10 < $(scrollTarget).scrollTop()) {
+ $(scrollTarget).animate({ scrollTop: (offset.top - 10) }, 500);
+ }
+ };
+}(jQuery, Drupal, drupalSettings));
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