/* $Id: auto_image_handling.js,v 1.1.4.4 2008/04/24 18:30:47 snpower Exp $ */

// Image Node Auto-Format with Auto Image Grouping.
// Original version by Steve McKenzie.
// Altered by Stella Power for jQuery version.

Drupal.behaviors.initAutoLightbox = function (context) {
  lightbox2_image_nodes();
};

function lightbox2_image_nodes() {

  var settings = Drupal.settings.lightbox2;

  // Don't do it on the image assist popup selection screen.
  var img_assist = document.getElementById("img_assist_thumbs");
  if (!img_assist) {

    // Select the enabled image types.
    lightbox2_init_triggers(settings.trigger_lightbox_classes, "lightbox_ungrouped");
    lightbox2_init_triggers(settings.custom_trigger_classes, "lightbox_ungrouped", true);
    lightbox2_init_triggers(settings.trigger_lightbox_group_classes, "lightbox");
    lightbox2_init_triggers(settings.trigger_slideshow_classes, "lightshow");

  }
}

function lightbox2_init_triggers(classes, rel_type, custom_class) {
  var settings = Drupal.settings.lightbox2;

  $("a:has("+classes+")").each(function(i) {

    if ((!settings.disable_for_gallery_lists && !settings.disable_for_acidfree_gallery_lists) || (!$(this).parents(".galleries").length && !$(this).parents(".acidfree-folder").length && !$(this).parents(".acidfree-list").length) || ($(this).parents(".galleries").length && !settings.disable_for_gallery_lists) || (($(this).parents(".acidfree-folder").length || $(this).parents(".acidfree-list").length) && !settings.disable_for_acidfree_gallery_lists)) {

      var child = $(this).children();

      // Ensure the child has a class attribute we can work with.
      if ($(child).attr("class").length) {

        // Set the alt text.
        var alt = $(child).attr("alt");
        if (!alt) {
          alt = "";
        }

        // Set the image node link text.
        var link_text = settings.node_link_text;
        var link_target  = "";
        if (settings.node_link_target != 0) {
          link_target = 'target="'+ settings.node_link_target +'"';
        }

        // Set the rel attribute.
        var rel = "lightbox";
        if (rel_type != "lightbox_ungrouped") {
          rel = rel_type + "[" + $(child).attr("class") + "]";
        }

        // Set the basic href attribute - need to ensure there's no language
        // string (e.g. /en) prepended to the URL.
        var href = $(child).attr("src");
        var orig_href = $(this).attr("href");
        var pattern = new RegExp(settings.file_path);
        if (orig_href.match(pattern)) {
          var lang_pattern = new RegExp(Drupal.settings.basePath + "\\w\\w\\/");
          orig_href = orig_href.replace(lang_pattern, Drupal.settings.basePath);
        }

        // Handle flickr images.
        if ($(child).attr("class").match("flickr-photo-img")
          || $(child).attr("class").match("flickr-photoset-img")) {
          href = $(child).attr("src").replace("_s", "").replace("_t", "").replace("_m", "").replace("_b", "");
          if (rel_type != "lightbox_ungrouped") {
            rel = rel_type + "[flickr]";
            if ($(child).parents("div.block-flickr").attr("class")) {
              var id = $(child).parents("div.block-flickr").attr("id");
              rel = rel_type + "["+ id +"]";
            }
          }
        }

        // Handle "image-img_assist_custom" images.
        else if ($(child).attr("class").match("image-img_assist_custom")) {
          // Image assist uses "+" signs for spaces which doesn't work for
          // normal links.
          orig_href = orig_href.replace(/\+/, " ");
          href = orig_href;
        }

        // Handle "inline" images.
        else if ($(child).attr("class").match("inline")) {
          href = orig_href;
        }

        // Handle gallery2 block images.
        else if ($(child).attr("class").match("ImageFrame_image")) {
          var thumb_id = parse_url(href, "g2_itemId");
          var new_id = parse_url(orig_href, "g2_itemId");
          if (new_id && thumb_id) {
            var pattern = new RegExp("g2_itemId="+thumb_id);
            var replacement = "g2_itemId="+ new_id;
            var href = href.replace(pattern, replacement);
          }
        }


        // Set the href attribute.
        else if (settings.image_node_sizes != '()') {
          href = $(child).attr("src").replace(new RegExp(settings.image_node_sizes), ((settings.display_image_size == "")?settings.display_image_size:"."+ settings.display_image_size)).replace(/(image\/view\/\d+)(\/\w*)/, ((settings.display_image_size == "")?"$1/_original":"$1/"+ settings.display_image_size));
          if (rel_type != "lightbox_ungrouped") {
            rel = rel_type + "[node_images]";
            if ($(child).parents("div.block-image").attr("class")) {
              var id = $(child).parents("div.block-image").attr("id");
              rel = rel_type + "["+ id +"]";
            }
          }
        }

        // Modify the image url.
        var img_title = $(child).attr("title");
        if (!img_title) {
          img_title = $(this).attr("title");
          $(child).attr({title: img_title});
        }
        if (!custom_class) {
          $(this).attr({
            title: alt + "<br /><a href=\"" + orig_href + "\" id=\"node_link_text\" "+ link_target +" >"+ link_text + "</a>",
            rel: rel,
            href: href
          });
        }
        else {
          $(this).attr({
            title: alt,
            rel: rel,
            href: orig_href
          });
        }
      }
    }

  });
}

function parse_url(url, param) {
  param = param.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  url = url.replace(/&amp;/, "&");
  var regexS = "[\\?&]"+param+"=([^&#]*)";
  var regex = new RegExp(regexS);
  var results = regex.exec(url);
  if (results == null) {
    return "";
  }
  else {
    return results[1];
  }
}