Club Drupal

/**

 * @file

 * Handles AJAX fetching of views, including filter submission and response.

 */

(function ($) {

/**

 * Attaches the AJAX behavior to Views exposed filter forms and key View links.

 */

Drupal.behaviors.ViewsAjaxView = {};

Drupal.behaviors.ViewsAjaxView.attach = function() {

  if (Drupal.settings && Drupal.settings.views && Drupal.settings.views.ajaxViews) {

    $.each(Drupal.settings.views.ajaxViews, function(i, settings) {

      Drupal.views.instances[i] = new Drupal.views.ajaxView(settings);

    });

  }

};

Drupal.views = {};

Drupal.views.instances = {};

/**

 * Javascript object for a certain view.

 */

Drupal.views.ajaxView = function(settings) {

  var selector = '.view-dom-id-' + settings.view_dom_id;

  this.$view = $(selector);

  // Retrieve the path to use for views' ajax.

  var ajax_path = Drupal.settings.views.ajax_path;

  // If there are multiple views this might've ended up showing up multiple times.

  if (ajax_path.constructor.toString().indexOf("Array") != -1) {

    ajax_path = ajax_path[0];

  }

  // Check if there are any GET parameters to send to views.

  var queryString = window.location.search || '';

  if (queryString !== '') {

    // Remove the question mark and Drupal path component if any.

    var queryString = queryString.slice(1).replace(/q=[^&]+&?|&?render=[^&]+/, '');

    if (queryString !== '') {

      // If there is a '?' in ajax_path, clean url are on and & should be used to add parameters.

      queryString = ((/\?/.test(ajax_path)) ? '&' : '?') + queryString;

    }

  }

  this.element_settings = {

    url: ajax_path + queryString,

    submit: settings,

    setClick: true,

    event: 'click',

    selector: selector,

    progress: { type: 'throbber' }

  };

  this.settings = settings;

  // Add the ajax to exposed forms.

  this.$exposed_form = $('#views-exposed-form-'+ settings.view_name.replace(/_/g, '-') + '-' + settings.view_display_id.replace(/_/g, '-'));

  this.$exposed_form.once(jQuery.proxy(this.attachExposedFormAjax, this));

  // Store Drupal.ajax objects here for all pager links.

  this.links = [];

  // Add the ajax to pagers.

  this.$view

    // Don't attach to nested views. Doing so would attach multiple behaviors

    // to a given element.

    .filter(jQuery.proxy(this.filterNestedViews, this))

    .once(jQuery.proxy(this.attachPagerAjax, this));

  // Add a trigger to update this view specifically. In order to trigger a

  // refresh use the following code.

  //

  // @code

  // jQuery('.view-name').trigger('RefreshView');

  // @endcode

  // Add a trigger to update this view specifically.

  var self_settings = this.element_settings;

  self_settings.event = 'RefreshView';

  this.refreshViewAjax = new Drupal.ajax(this.selector, this.$view, self_settings);

};

Drupal.views.ajaxView.prototype.attachExposedFormAjax = function() {

  var button = $('input[type=submit], button[type=submit], input[type=image]', this.$exposed_form);

  button = button[0];

  this.exposedFormAjax = new Drupal.ajax($(button).attr('id'), button, this.element_settings);

};

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').size();

};

/**

 * Attach the ajax behavior to each link.

 */

Drupal.views.ajaxView.prototype.attachPagerAjax = function() {

  this.$view.find('ul.pager > li > a, th.views-field a, .attachment .views-summary a')

  .each(jQuery.proxy(this.attachPagerLinkAjax, this));

};

/**

 * Attach the ajax behavior to a singe link.

 */

Drupal.views.ajaxView.prototype.attachPagerLinkAjax = function(id, link) {

  var $link = $(link);

  var viewData = {};

  var href = $link.attr('href');

  // Construct an object using the settings defaults and then overriding

  // with data specific to the link.

  $.extend(

    viewData,

    this.settings,

    Drupal.Views.parseQueryString(href),

    // Extract argument data from the URL.

    Drupal.Views.parseViewArgs(href, this.settings.view_base_path)

  );

  // For anchor tags, these will go to the target of the anchor rather

  // than the usual location.

  $.extend(viewData, Drupal.Views.parseViewArgs(href, this.settings.view_base_path));

  this.element_settings.submit = viewData;

  this.pagerAjax = new Drupal.ajax(false, $link, this.element_settings);

  this.links.push(this.pagerAjax);

};

Drupal.ajax.prototype.commands.viewsScrollTop = function (ajax, response, status) {

  // Scroll to the top of the view. This will allow users

  // to browse newly loaded content after e.g. clicking a pager

  // link.

  var offset = $(response.selector).offset();

  // We can't guarantee that the scrollable object should be

  // the body, as the view could be embedded in something

  // more complex such as a modal popup. Recurse up the DOM

  // and scroll the first element that has a non-zero top.

  var scrollTarget = response.selector;

  while ($(scrollTarget).scrollTop() == 0 && $(scrollTarget).parent()) {

    scrollTarget = $(scrollTarget).parent();

  }

  // Only scroll upward

  if (offset.top - 10 < $(scrollTarget).scrollTop()) {

    $(scrollTarget).animate({scrollTop: (offset.top - 10)}, 500);

  }

};

})(jQuery);