https://aac.ca/sites/all/modules/contrib/views/js/ajax_view.js?r5bkyo

1/**
2 * @file
3 * Handles AJAX fetching of views, including filter submission and response.
4 */
5(function ($) {
6
7  /**
8   * Attaches the AJAX behavior to exposed filter forms and key views links.
9   */
10  Drupal.behaviors.ViewsAjaxView = {};
11  Drupal.behaviors.ViewsAjaxView.attach = function() {
12    if (Drupal.settings && Drupal.settings.views && Drupal.settings.views.ajaxViews) {
13      $.each(Drupal.settings.views.ajaxViews, function(i, settings) {
14        Drupal.views.instances[i] = new Drupal.views.ajaxView(settings);
15      });
16    }
17  };
18
19  Drupal.views = {};
20  Drupal.views.instances = {};
21
22  /**
23   * JavaScript object for a certain view.
24   */
25  Drupal.views.ajaxView = function(settings) {
26    var selector = '.view-dom-id-' + settings.view_dom_id;
27    this.$view = $(selector);
28
29    // If view is not present return to prevent errors.
30    if (!this.$view.length) {
31      return;
32    }
33
34    // Retrieve the path to use for views' ajax.
35    var ajax_path = Drupal.settings.views.ajax_path;
36
37    // If there are multiple views this might've ended up showing up multiple
38    // times.
39    if (ajax_path.constructor.toString().indexOf("Array") != -1) {
40      ajax_path = ajax_path[0];
41    }
42
43    // Check if there are any GET parameters to send to views.
44    var queryString = window.location.search || '';
45    if (queryString !== '') {
46      // Remove the question mark and Drupal path component if any.
47      var queryString = queryString.slice(1).replace(/q=[^&]+&?|&?render=[^&]+/, '');
48      if (queryString !== '') {
49        // If there is a '?' in ajax_path, clean url are on and & should be
50        // used to add parameters.
51        queryString = ((/\?/.test(ajax_path)) ? '&' : '?') + queryString;
52      }
53    }
54
55    this.element_settings = {
56      url: ajax_path + queryString,
57      submit: settings,
58      setClick: true,
59      event: 'click',
60      selector: selector,
61      progress: {
62        type: 'throbber'
63      }
64    };
65
66    this.settings = settings;
67
68    // Add the ajax to exposed forms.
69    this.$exposed_form = $('#views-exposed-form-' + settings.view_name.replace(/_/g, '-') + '-' + settings.view_display_id.replace(/_/g, '-'));
70    this.$exposed_form.once(jQuery.proxy(this.attachExposedFormAjax, this));
71
72    // Store Drupal.ajax objects here for all pager links.
73    this.links = [];
74
75    // Add the ajax to pagers.
76    this.$view
77      .once(jQuery.proxy(this.attachPagerAjax, this));
78
79    // Add a trigger to update this view specifically. In order to trigger a
80    // refresh use the following code.
81    //
82    // @code
83    // jQuery('.view-name').trigger('RefreshView');
84    // @endcode
85    // Add a trigger to update this view specifically.
86    var self_settings = this.element_settings;
87    self_settings.event = 'RefreshView';
88    var self = this;
89    this.$view.once('refresh', function () {
90      self.refreshViewAjax = new Drupal.ajax(self.selector, self.$view, self_settings);
91    });
92  };
93
94  Drupal.views.ajaxView.prototype.attachExposedFormAjax = function() {
95    var button = $('input[type=submit], button[type=submit], input[type=image]', this.$exposed_form);
96    button = button[0];
97
98    // Call the autocomplete submit before doing AJAX.
99    $(button).click(function () {
100      if (Drupal.autocompleteSubmit) {
101        Drupal.autocompleteSubmit();
102      }
103    });
104
105    this.exposedFormAjax = new Drupal.ajax($(button).attr('id'), button, this.element_settings);
106  };
107
108  /**
109   * Attach the ajax behavior to each link.
110   */
111  Drupal.views.ajaxView.prototype.attachPagerAjax = function() {
112    this.$view.find('ul.pager > li > a, ol.pager > li > a, th.views-field a, .attachment .views-summary a')
113      .each(jQuery.proxy(this.attachPagerLinkAjax, this));
114  };
115
116  /**
117   * Attach the ajax behavior to a single link.
118   */
119  Drupal.views.ajaxView.prototype.attachPagerLinkAjax = function(id, link) {
120    var $link = $(link);
121    var viewData = {};
122    var href = $link.attr('href');
123    // Don't attach to pagers inside nested views.
124    if ($link.closest('.view')[0] !== this.$view[0] &&
125      $link.closest('.view').parent().hasClass('attachment') === false) {
126      return;
127    }
128
129    // Provide a default page if none has been set. This must be done
130    // prior to merging with settings to avoid accidentally using the
131    // page landed on instead of page 1.
132    if (typeof(viewData.page) === 'undefined') {
133      viewData.page = 0;
134    }
135
136    // Construct an object using the settings defaults and then overriding
137    // with data specific to the link.
138    $.extend(
139      viewData,
140      this.settings,
141      Drupal.Views.parseQueryString(href),
142      // Extract argument data from the URL.
143      Drupal.Views.parseViewArgs(href, this.settings.view_base_path)
144    );
145

146    // For anchor tags, these will go to the target of the anchor rather
147    // than the usual location.
148    $.extend(viewData, Drupal.Views.parseViewArgs(href, this.settings.view_base_path));
149
150    // Construct an object using the element settings defaults,
151    // then overriding submit with viewData.
152    var pager_settings = $.extend({}, this.element_settings);
153    pager_settings.submit = viewData;
154    this.pagerAjax = new Drupal.ajax(false, $link, pager_settings);
155    this.links.push(this.pagerAjax);
156  };
157
158  Drupal.ajax.prototype.commands.viewsScrollTop = function (ajax, response, status) {
159    // Scroll to the top of the view. This will allow users
160    // to browse newly loaded content after e.g. clicking a pager
161    // link.
162    var offset = $(response.selector).offset();
163    // We can't guarantee that the scrollable object should be
164    // the body, as the view could be embedded in something
165    // more complex such as a modal popup. Recurse up the DOM
166    // and scroll the first element that has a non-zero top.
167    var scrollTarget = response.selector;
168    while ($(scrollTarget).scrollTop() == 0 && $(scrollTarget).parent()) {
169      scrollTarget = $(scrollTarget).parent();
170    }
171    // Only scroll upward.
172    if (offset.top - 10 < $(scrollTarget).scrollTop()) {
173      $(scrollTarget).animate({scrollTop: (offset.top - 10)}, 500);
174    }
175  };
176
177})(jQuery);