/**
 * @file ajaxView.js
 *
 * 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) {
      // @todo: Figure out where to store the object.
      new Drupal.views.ajaxView(settings);
    });
  }
};

Drupal.views = {};

/**
 * 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];
  }

  this.element_settings = {
    url: ajax_path + window.location.search,
    submit: settings,
    setClick: true,
    event: 'click',
    selector: selector,
    progress: { type: 'throbber' }
  };

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

Drupal.views.ajaxView.prototype.attachExposedFormAjax = function() {
  var button = $('input[type=submit], input[type=image]', this.$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);
};

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);
;
Drupal.behaviors.views_accordion =  {
  attach: function(context) {
    if(Drupal.settings.views_accordion){
      (function ($) {
        $.each(Drupal.settings.views_accordion, function(id) {
          /* Our view settings */
          var usegroupheader = this.usegroupheader;
          var viewname = this.viewname;
          var display = this.display;

          /* the selectors we have to play with */
          var displaySelector = '.view-id-'+ viewname +'.view-display-id-'+ display +' .view-content';
          var headerSelector = this.header;

          /* Prepare our markup for jquery ui accordion */
          $(displaySelector +' '+ headerSelector +':not(.ui-accordion-header)').each(function(i){
            var hash = "#"+ viewname +"-"+ display +"-"+ i; // hash to use for accordion navigation option
            var $this = $(this);
            var $link = $this.find('a');
            // if the header is not already using an anchor tag, add one
            if($link.length == 0){
              // setup anchor tag for navigation
              $this.wrapInner('<a href="'+hash+'"></a>');
            }
            // if there are already, they wont be clickable with js enabled, we'll use them for accordion navigation
            else{
              // @FIXME ?
              // We are currently destroying the original link, though search crawlers will stil see it.
              // Links in accordions are NOT clickable and leaving them would kill deep linking.
              $link.get(0).href = hash;
            }

            // Wrap the accordion content within a div if necessary
            if (!usegroupheader) {
              $this.siblings().wrapAll('<div></div>');
            }
          });

          /* jQuery UI accordion call */
          $(displaySelector +':not(.ui-accordion)').accordion({
              header: headerSelector,
              animated: this.animated,
              active: this.rowstartopen,
              collapsible: this.collapsible,
              autoHeight: this.autoheight,
              event: this.event,
              fillSpace: this.fillspace,
              navigation: this.navigation,
              clearstyle: this.clearstyle
          });
        });
      })(jQuery);
    }
  }
};;