Club Drupal

/**

 * @file

 *

 * CTools flexible AJAX responder object.

 */

(function ($) {

  Drupal.CTools = Drupal.CTools || {};

  Drupal.CTools.AJAX = Drupal.CTools.AJAX || {};

  /**

   * Grab the response from the server and store it.

   *

   * @todo restore the warm cache functionality

   */

  Drupal.CTools.AJAX.warmCache = function () {

    // Store this expression for a minor speed improvement.

    $this = $(this);

    var old_url = $this.attr('href');

    // If we are currently fetching, or if we have fetched this already which is

    // ideal for things like pagers, where the previous page might already have

    // been seen in the cache.

    if ($this.hasClass('ctools-fetching') || Drupal.CTools.AJAX.commandCache[old_url]) {

      return false;

    }

    // Grab all the links that match this url and add the fetching class.

    // This allows the caching system to grab each url once and only once

    // instead of grabbing the url once per <a>.

    var $objects = $('a[href="' + old_url + '"]')

    $objects.addClass('ctools-fetching');

    try {

      url = old_url.replace(/\/nojs(\/|$)/g, '/ajax$1');

      $.ajax({

        type: "POST",

        url: url,

        data: { 'js': 1, 'ctools_ajax': 1},

        global: true,

        success: function (data) {

          Drupal.CTools.AJAX.commandCache[old_url] = data;

          $objects.addClass('ctools-cache-warmed').trigger('ctools-cache-warm', [data]);

        },

        complete: function() {

          $objects.removeClass('ctools-fetching');

        },

        dataType: 'json'

      });

    }

    catch (err) {

      $objects.removeClass('ctools-fetching');

      return false;

    }

    return false;

  };

  /**

   * Cachable click handler to fetch the commands out of the cache or from url.

   */

  Drupal.CTools.AJAX.clickAJAXCacheLink = function () {

    $this = $(this);

    if ($this.hasClass('ctools-fetching')) {

      $this.bind('ctools-cache-warm', function (event, data) {

        Drupal.CTools.AJAX.respond(data);

      });

      return false;

    }

    else {

      if ($this.hasClass('ctools-cache-warmed') && Drupal.CTools.AJAX.commandCache[$this.attr('href')]) {

        Drupal.CTools.AJAX.respond(Drupal.CTools.AJAX.commandCache[$this.attr('href')]);

        return false;

      }

      else {

        return Drupal.CTools.AJAX.clickAJAXLink.apply(this);

      }

    }

  };

  /**

   * Find a URL for an AJAX button.

   *

   * The URL for this gadget will be composed of the values of items by

   * taking the ID of this item and adding -url and looking for that

   * class. They need to be in the form in order since we will

   * concat them all together using '/'.

   */

  Drupal.CTools.AJAX.findURL = function(item) {

    var url = '';

    var url_class = '.' + $(item).attr('id') + '-url';

    $(url_class).each(

      function() {

        var $this = $(this);

        if (url && $this.val()) {

          url += '/';

        }

        url += $this.val();

      });

    return url;

  };

  // Hide these in a ready to ensure that Drupal.ajax is set up first.

  $(function() {

    Drupal.ajax.prototype.commands.attr = function(ajax, data, status) {

      $(data.selector).attr(data.name, data.value);

    };

    Drupal.ajax.prototype.commands.redirect = function(ajax, data, status) {

      if (data.delay > 0) {

        setTimeout(function () {

          location.href = data.url;

        }, data.delay);

      }

      else {

        location.href = data.url;

      }

    };

    Drupal.ajax.prototype.commands.reload = function(ajax, data, status) {

      location.reload();

    };

    Drupal.ajax.prototype.commands.submit = function(ajax, data, status) {

      $(data.selector).submit();

    }

  });

})(jQuery);