zipcart.js

(function ($) {

  Drupal.behaviors.zipcart = {
    attach: function (context, settings) {
      $('a.zipcart').click(function(e) {
        if (e.target.tagName.toLowerCase() == 'a') {
          a = e.target;
        }
        else {
          if (a = $(e.target).parents('a[href]')) {
            // found parent a
          }
          else {
            return;
          }
        }
        e.preventDefault();
        // handle subdir Drupal installation
        filePath = $(a).attr('href').replace(Drupal.settings.basePath, '');
        // add AJAX parameter
        filePath = filePath.replace(Drupal.settings.zipcart.path_add, Drupal.settings.zipcart.path_add_ajax) ;
        // add Drupal basePath
        filePath = Drupal.settings.basePath + filePath;
        // remove multiple slashes at start
        filePath = filePath.replace(/^\/+/, '/');

        $.ajax({
          'url': filePath,
          'dataType': 'json',

          success: function(data, textStatus, req) {
            Drupal.settings.zipcart.cart = data.cart;
            cart = $('.zipcart-block-downloads');
            // copy the element for animation - with thanks to jQuery 'fake' plugin by Carl Fürstenberg
            orig_offset = $(a).offset();
            orig_height = $(a).height();
            orig_width  = $(a).width();
            clone = $(a).clone();
            // prevent this element catching any events on the way across the screen
            possEvents = "blur focus focusin focusout load resize scroll unload click dblclick "  +
              "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
              "change select submit keydown keypress keyup error";
            clone.bind(possEvents, function(event) { event.preventDefault(); });
            clone.addClass('clone');
            clone.css({
              position: 'absolute',
              visibility: 'visible',
              left: orig_offset.left,
              top: orig_offset.top,
              width: orig_width,
              height: orig_height
            });
            clone.appendTo($('body'));
            animProps = {
              top:  parseInt(cart.offset().top + (($(cart).height() - clone.height()/2) / 2)),
              left: parseInt(cart.offset().left + (($(cart).width() - clone.width()/2) / 2)),
              width: orig_width/2,
              height: orig_height/2
            };
            animCallback = function(data) {
              clone.fadeOut().remove();
              $('.zipcart-download-count').html(Drupal.settings.zipcart.cart.length);
            }
            clone.animate(animProps, 'slow', 'swing', animCallback);
          },

          error: function(req, textStatus, errorThrown) {
            alert(Drupal.t('Unable to add the file to your ZipCart.'));

            if (console) {
              console.log(req);
              console.log(textStatus);
              console.log(errorThrown);
            }

            switch (textStatus) {
              case 'timeout' :
              case 'null' :
              case 'error' :
              case 'parsererror' :
              case 'notmodified' :
                break;
              default :
                break;
            }
            // probably not permitted - handle file access restriction here
          }
        });
      });
    }
  };
})(jQuery);