/**
 * @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];
  }

  // 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=[^&]+&?/, '');
    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 = $('form#views-exposed-form-'+ settings.view_name.replace(/_/g, '-') + '-' + settings.view_display_id.replace(/_/g, '-'));
  this.$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.mediaGalleryColorbox = {};

Drupal.behaviors.mediaGalleryColorbox.attach = function (context, settings) {
  var $ = jQuery, $galleries, $gallery, href, $links, $link, $dummyLinksPre, $dummyLinksPost, i, j;
  if ($.fn.colorbox) {
    // Add a colorbox group for each media gallery field on the page.
    $galleries = $('.field-name-media-gallery-media');
    for (i = 0; i < $galleries.length; i++) {
      $gallery = $($galleries[i]);
      $links = $('a.cbEnabled', $gallery);
      $dummyLinksPre = $gallery.parent().find('ul:has(a.colorbox-supplemental-link.pre)');
      $dummyLinksPost = $gallery.parent().find('ul:has(a.colorbox-supplemental-link.post)');
      $dummyLinksPost.appendTo($gallery);
      $links = $links.add('a', $dummyLinksPre).add('a', $dummyLinksPost);
      $links.attr('rel', 'colorbox-' + i);
      for (j = 0; j < $links.length; j++) {
        // Change the link href to point to the lightbox version of the media.
        $link = $($links[j]);
        href = $link.attr('href');
        $link.attr('href', href.replace(/\/detail\/([0-9]+)\/([0-9]+)/, '/lightbox/$1/$2'));
      }
      $links.not('.meta-wrapper').colorbox({
        slideshow: true,
        slideshowAuto: false,
        slideshowStart: Drupal.t('Slideshow'),
        slideshowStop: '[' + Drupal.t('stop slideshow') + ']',
        slideshowSpeed: 4000,
        current: Drupal.t('Item !current of !total', {'!current':'{current}', '!total':'{total}'}),
        innerWidth: 'auto',
        // If 'title' evaluates to false, Colorbox will use the title from the
        // underlying <a> element, which we don't want. Using a space is the
        // officially approved workaround. See
        // http://groups.google.com/group/colorbox/msg/7671ae69708950bf
        title: ' ',
        transition: 'fade',
        preloading: true,
        fastIframe: false,
        onComplete: function () {
          $(this).colorbox.resize();
        }
      });
    }
    $('a.meta-wrapper').bind('click', Drupal.mediaGalleryColorbox.metaClick);
    // Subscribe to the media_youtube module's load event, so we can pause
    // the slideshow and play the video.
    $(window).bind('media_youtube_load', Drupal.mediaGalleryColorbox.handleMediaYoutubeLoad);
  }
};

Drupal.mediaGalleryColorbox = {};

/**
 * Handles the click event on the metadata.
 */
Drupal.mediaGalleryColorbox.metaClick = function (event) {
  event.preventDefault();
  jQuery(this).prev('.media-gallery-item').find('a.cbEnabled').click();
};

/**
 * Handles the media_youtube module's load event.
 *
 * If the colorbox slideshow is playing, and it gets to a video, the video
 * should play automatically, and the slideshow should pause until it's done.
 */
Drupal.mediaGalleryColorbox.handleMediaYoutubeLoad = function (event, videoSettings) {
  var $ = jQuery;
  var slideshowOn = $('#colorbox').hasClass('cboxSlideshow_on');
  // Set a width on a wrapper for the video so that the colorbox will size properly.
  $('#colorbox .media-gallery-item').width(videoSettings.width + 'px').height(videoSettings.height + 'px');
  if (slideshowOn) {
    videoSettings.options.autoplay = 1;
    $('#cboxSlideshow')
      // Turn off the slideshow while the video is playing.
      .click() // No, there is not a better way.
      .text('[' + Drupal.t('resume slideshow') + ']');
      // TODO: If YouTube makes its JavaScript API available for iframe videos,
      // set the slideshow to restart when the video is done playing.
  }
};
;