cms/drupal/misc/ajax.js
changeset 541 e756a8c72c3d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/misc/ajax.js	Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,677 @@
+(function ($) {
+
+/**
+ * Provides Ajax page updating via jQuery $.ajax (Asynchronous JavaScript and XML).
+ *
+ * Ajax is a method of making a request via JavaScript while viewing an HTML
+ * page. The request returns an array of commands encoded in JSON, which is
+ * then executed to make any changes that are necessary to the page.
+ *
+ * Drupal uses this file to enhance form elements with #ajax['path'] and
+ * #ajax['wrapper'] properties. If set, this file will automatically be included
+ * to provide Ajax capabilities.
+ */
+
+Drupal.ajax = Drupal.ajax || {};
+
+Drupal.settings.urlIsAjaxTrusted = Drupal.settings.urlIsAjaxTrusted || {};
+
+/**
+ * Attaches the Ajax behavior to each Ajax form element.
+ */
+Drupal.behaviors.AJAX = {
+  attach: function (context, settings) {
+    // Load all Ajax behaviors specified in the settings.
+    for (var base in settings.ajax) {
+      if (!$('#' + base + '.ajax-processed').length) {
+        var element_settings = settings.ajax[base];
+
+        if (typeof element_settings.selector == 'undefined') {
+          element_settings.selector = '#' + base;
+        }
+        $(element_settings.selector).each(function () {
+          element_settings.element = this;
+          Drupal.ajax[base] = new Drupal.ajax(base, this, element_settings);
+        });
+
+        $('#' + base).addClass('ajax-processed');
+      }
+    }
+
+    // Bind Ajax behaviors to all items showing the class.
+    $('.use-ajax:not(.ajax-processed)').addClass('ajax-processed').each(function () {
+      var element_settings = {};
+      // Clicked links look better with the throbber than the progress bar.
+      element_settings.progress = { 'type': 'throbber' };
+
+      // For anchor tags, these will go to the target of the anchor rather
+      // than the usual location.
+      if ($(this).attr('href')) {
+        element_settings.url = $(this).attr('href');
+        element_settings.event = 'click';
+      }
+      var base = $(this).attr('id');
+      Drupal.ajax[base] = new Drupal.ajax(base, this, element_settings);
+    });
+
+    // This class means to submit the form to the action using Ajax.
+    $('.use-ajax-submit:not(.ajax-processed)').addClass('ajax-processed').each(function () {
+      var element_settings = {};
+
+      // Ajax submits specified in this manner automatically submit to the
+      // normal form action.
+      element_settings.url = $(this.form).attr('action');
+      // Form submit button clicks need to tell the form what was clicked so
+      // it gets passed in the POST request.
+      element_settings.setClick = true;
+      // Form buttons use the 'click' event rather than mousedown.
+      element_settings.event = 'click';
+      // Clicked form buttons look better with the throbber than the progress bar.
+      element_settings.progress = { 'type': 'throbber' };
+
+      var base = $(this).attr('id');
+      Drupal.ajax[base] = new Drupal.ajax(base, this, element_settings);
+    });
+  }
+};
+
+/**
+ * Ajax object.
+ *
+ * All Ajax objects on a page are accessible through the global Drupal.ajax
+ * object and are keyed by the submit button's ID. You can access them from
+ * your module's JavaScript file to override properties or functions.
+ *
+ * For example, if your Ajax enabled button has the ID 'edit-submit', you can
+ * redefine the function that is called to insert the new content like this
+ * (inside a Drupal.behaviors attach block):
+ * @code
+ *    Drupal.behaviors.myCustomAJAXStuff = {
+ *      attach: function (context, settings) {
+ *        Drupal.ajax['edit-submit'].commands.insert = function (ajax, response, status) {
+ *          new_content = $(response.data);
+ *          $('#my-wrapper').append(new_content);
+ *          alert('New content was appended to #my-wrapper');
+ *        }
+ *      }
+ *    };
+ * @endcode
+ */
+Drupal.ajax = function (base, element, element_settings) {
+  var defaults = {
+    url: 'system/ajax',
+    event: 'mousedown',
+    keypress: true,
+    selector: '#' + base,
+    effect: 'none',
+    speed: 'none',
+    method: 'replaceWith',
+    progress: {
+      type: 'throbber',
+      message: Drupal.t('Please wait...')
+    },
+    submit: {
+      'js': true
+    }
+  };
+
+  $.extend(this, defaults, element_settings);
+
+  this.element = element;
+  this.element_settings = element_settings;
+
+  // Replacing 'nojs' with 'ajax' in the URL allows for an easy method to let
+  // the server detect when it needs to degrade gracefully.
+  // There are five scenarios to check for:
+  // 1. /nojs/
+  // 2. /nojs$ - The end of a URL string.
+  // 3. /nojs? - Followed by a query (with clean URLs enabled).
+  //      E.g.: path/nojs?destination=foobar
+  // 4. /nojs& - Followed by a query (without clean URLs enabled).
+  //      E.g.: ?q=path/nojs&destination=foobar
+  // 5. /nojs# - Followed by a fragment.
+  //      E.g.: path/nojs#myfragment
+  this.url = element_settings.url.replace(/\/nojs(\/|$|\?|&|#)/g, '/ajax$1');
+  // If the 'nojs' version of the URL is trusted, also trust the 'ajax' version.
+  if (Drupal.settings.urlIsAjaxTrusted[element_settings.url]) {
+    Drupal.settings.urlIsAjaxTrusted[this.url] = true;
+  }
+
+  this.wrapper = '#' + element_settings.wrapper;
+
+  // If there isn't a form, jQuery.ajax() will be used instead, allowing us to
+  // bind Ajax to links as well.
+  if (this.element.form) {
+    this.form = $(this.element.form);
+  }
+
+  // Set the options for the ajaxSubmit function.
+  // The 'this' variable will not persist inside of the options object.
+  var ajax = this;
+  ajax.options = {
+    url: ajax.url,
+    data: ajax.submit,
+    beforeSerialize: function (element_settings, options) {
+      return ajax.beforeSerialize(element_settings, options);
+    },
+    beforeSubmit: function (form_values, element_settings, options) {
+      ajax.ajaxing = true;
+      return ajax.beforeSubmit(form_values, element_settings, options);
+    },
+    beforeSend: function (xmlhttprequest, options) {
+      ajax.ajaxing = true;
+      return ajax.beforeSend(xmlhttprequest, options);
+    },
+    success: function (response, status, xmlhttprequest) {
+      // Sanity check for browser support (object expected).
+      // When using iFrame uploads, responses must be returned as a string.
+      if (typeof response == 'string') {
+        response = $.parseJSON(response);
+      }
+
+      // Prior to invoking the response's commands, verify that they can be
+      // trusted by checking for a response header. See
+      // ajax_set_verification_header() for details.
+      // - Empty responses are harmless so can bypass verification. This avoids
+      //   an alert message for server-generated no-op responses that skip Ajax
+      //   rendering.
+      // - Ajax objects with trusted URLs (e.g., ones defined server-side via
+      //   #ajax) can bypass header verification. This is especially useful for
+      //   Ajax with multipart forms. Because IFRAME transport is used, the
+      //   response headers cannot be accessed for verification.
+      if (response !== null && !Drupal.settings.urlIsAjaxTrusted[ajax.url]) {
+        if (xmlhttprequest.getResponseHeader('X-Drupal-Ajax-Token') !== '1') {
+          var customMessage = Drupal.t("The response failed verification so will not be processed.");
+          return ajax.error(xmlhttprequest, ajax.url, customMessage);
+        }
+      }
+
+      return ajax.success(response, status);
+    },
+    complete: function (xmlhttprequest, status) {
+      ajax.ajaxing = false;
+      if (status == 'error' || status == 'parsererror') {
+        return ajax.error(xmlhttprequest, ajax.url);
+      }
+    },
+    dataType: 'json',
+    type: 'POST'
+  };
+
+  // Bind the ajaxSubmit function to the element event.
+  $(ajax.element).bind(element_settings.event, function (event) {
+    if (!Drupal.settings.urlIsAjaxTrusted[ajax.url] && !Drupal.urlIsLocal(ajax.url)) {
+      throw new Error(Drupal.t('The callback URL is not local and not trusted: !url', {'!url': ajax.url}));
+    }
+    return ajax.eventResponse(this, event);
+  });
+
+  // If necessary, enable keyboard submission so that Ajax behaviors
+  // can be triggered through keyboard input as well as e.g. a mousedown
+  // action.
+  if (element_settings.keypress) {
+    $(ajax.element).keypress(function (event) {
+      return ajax.keypressResponse(this, event);
+    });
+  }
+
+  // If necessary, prevent the browser default action of an additional event.
+  // For example, prevent the browser default action of a click, even if the
+  // AJAX behavior binds to mousedown.
+  if (element_settings.prevent) {
+    $(ajax.element).bind(element_settings.prevent, false);
+  }
+};
+
+/**
+ * Handle a key press.
+ *
+ * The Ajax object will, if instructed, bind to a key press response. This
+ * will test to see if the key press is valid to trigger this event and
+ * if it is, trigger it for us and prevent other keypresses from triggering.
+ * In this case we're handling RETURN and SPACEBAR keypresses (event codes 13
+ * and 32. RETURN is often used to submit a form when in a textfield, and 
+ * SPACE is often used to activate an element without submitting. 
+ */
+Drupal.ajax.prototype.keypressResponse = function (element, event) {
+  // Create a synonym for this to reduce code confusion.
+  var ajax = this;
+
+  // Detect enter key and space bar and allow the standard response for them,
+  // except for form elements of type 'text' and 'textarea', where the 
+  // spacebar activation causes inappropriate activation if #ajax['keypress'] is 
+  // TRUE. On a text-type widget a space should always be a space.
+  if (event.which == 13 || (event.which == 32 && element.type != 'text' && element.type != 'textarea')) {
+    $(ajax.element_settings.element).trigger(ajax.element_settings.event);
+    return false;
+  }
+};
+
+/**
+ * Handle an event that triggers an Ajax response.
+ *
+ * When an event that triggers an Ajax response happens, this method will
+ * perform the actual Ajax call. It is bound to the event using
+ * bind() in the constructor, and it uses the options specified on the
+ * ajax object.
+ */
+Drupal.ajax.prototype.eventResponse = function (element, event) {
+  // Create a synonym for this to reduce code confusion.
+  var ajax = this;
+
+  // Do not perform another ajax command if one is already in progress.
+  if (ajax.ajaxing) {
+    return false;
+  }
+
+  try {
+    if (ajax.form) {
+      // If setClick is set, we must set this to ensure that the button's
+      // value is passed.
+      if (ajax.setClick) {
+        // Mark the clicked button. 'form.clk' is a special variable for
+        // ajaxSubmit that tells the system which element got clicked to
+        // trigger the submit. Without it there would be no 'op' or
+        // equivalent.
+        element.form.clk = element;
+      }
+
+      ajax.form.ajaxSubmit(ajax.options);
+    }
+    else {
+      ajax.beforeSerialize(ajax.element, ajax.options);
+      $.ajax(ajax.options);
+    }
+  }
+  catch (e) {
+    // Unset the ajax.ajaxing flag here because it won't be unset during
+    // the complete response.
+    ajax.ajaxing = false;
+    alert("An error occurred while attempting to process " + ajax.options.url + ": " + e.message);
+  }
+
+  // For radio/checkbox, allow the default event. On IE, this means letting
+  // it actually check the box.
+  if (typeof element.type != 'undefined' && (element.type == 'checkbox' || element.type == 'radio')) {
+    return true;
+  }
+  else {
+    return false;
+  }
+
+};
+
+/**
+ * Handler for the form serialization.
+ *
+ * Runs before the beforeSend() handler (see below), and unlike that one, runs
+ * before field data is collected.
+ */
+Drupal.ajax.prototype.beforeSerialize = function (element, options) {
+  // Allow detaching behaviors to update field values before collecting them.
+  // This is only needed when field values are added to the POST data, so only
+  // when there is a form such that this.form.ajaxSubmit() is used instead of
+  // $.ajax(). When there is no form and $.ajax() is used, beforeSerialize()
+  // isn't called, but don't rely on that: explicitly check this.form.
+  if (this.form) {
+    var settings = this.settings || Drupal.settings;
+    Drupal.detachBehaviors(this.form, settings, 'serialize');
+  }
+
+  // Prevent duplicate HTML ids in the returned markup.
+  // @see drupal_html_id()
+  options.data['ajax_html_ids[]'] = [];
+  $('[id]').each(function () {
+    options.data['ajax_html_ids[]'].push(this.id);
+  });
+
+  // Allow Drupal to return new JavaScript and CSS files to load without
+  // returning the ones already loaded.
+  // @see ajax_base_page_theme()
+  // @see drupal_get_css()
+  // @see drupal_get_js()
+  options.data['ajax_page_state[theme]'] = Drupal.settings.ajaxPageState.theme;
+  options.data['ajax_page_state[theme_token]'] = Drupal.settings.ajaxPageState.theme_token;
+  for (var key in Drupal.settings.ajaxPageState.css) {
+    options.data['ajax_page_state[css][' + key + ']'] = 1;
+  }
+  for (var key in Drupal.settings.ajaxPageState.js) {
+    options.data['ajax_page_state[js][' + key + ']'] = 1;
+  }
+};
+
+/**
+ * Modify form values prior to form submission.
+ */
+Drupal.ajax.prototype.beforeSubmit = function (form_values, element, options) {
+  // This function is left empty to make it simple to override for modules
+  // that wish to add functionality here.
+};
+
+/**
+ * Prepare the Ajax request before it is sent.
+ */
+Drupal.ajax.prototype.beforeSend = function (xmlhttprequest, options) {
+  // For forms without file inputs, the jQuery Form plugin serializes the form
+  // values, and then calls jQuery's $.ajax() function, which invokes this
+  // handler. In this circumstance, options.extraData is never used. For forms
+  // with file inputs, the jQuery Form plugin uses the browser's normal form
+  // submission mechanism, but captures the response in a hidden IFRAME. In this
+  // circumstance, it calls this handler first, and then appends hidden fields
+  // to the form to submit the values in options.extraData. There is no simple
+  // way to know which submission mechanism will be used, so we add to extraData
+  // regardless, and allow it to be ignored in the former case.
+  if (this.form) {
+    options.extraData = options.extraData || {};
+
+    // Let the server know when the IFRAME submission mechanism is used. The
+    // server can use this information to wrap the JSON response in a TEXTAREA,
+    // as per http://jquery.malsup.com/form/#file-upload.
+    options.extraData.ajax_iframe_upload = '1';
+
+    // The triggering element is about to be disabled (see below), but if it
+    // contains a value (e.g., a checkbox, textfield, select, etc.), ensure that
+    // value is included in the submission. As per above, submissions that use
+    // $.ajax() are already serialized prior to the element being disabled, so
+    // this is only needed for IFRAME submissions.
+    var v = $.fieldValue(this.element);
+    if (v !== null) {
+      options.extraData[this.element.name] = Drupal.checkPlain(v);
+    }
+  }
+
+  // Disable the element that received the change to prevent user interface
+  // interaction while the Ajax request is in progress. ajax.ajaxing prevents
+  // the element from triggering a new request, but does not prevent the user
+  // from changing its value.
+  $(this.element).addClass('progress-disabled').attr('disabled', true);
+
+  // Insert progressbar or throbber.
+  if (this.progress.type == 'bar') {
+    var progressBar = new Drupal.progressBar('ajax-progress-' + this.element.id, eval(this.progress.update_callback), this.progress.method, eval(this.progress.error_callback));
+    if (this.progress.message) {
+      progressBar.setProgress(-1, this.progress.message);
+    }
+    if (this.progress.url) {
+      progressBar.startMonitoring(this.progress.url, this.progress.interval || 1500);
+    }
+    this.progress.element = $(progressBar.element).addClass('ajax-progress ajax-progress-bar');
+    this.progress.object = progressBar;
+    $(this.element).after(this.progress.element);
+  }
+  else if (this.progress.type == 'throbber') {
+    this.progress.element = $('<div class="ajax-progress ajax-progress-throbber"><div class="throbber">&nbsp;</div></div>');
+    if (this.progress.message) {
+      $('.throbber', this.progress.element).after('<div class="message">' + this.progress.message + '</div>');
+    }
+    $(this.element).after(this.progress.element);
+  }
+};
+
+/**
+ * Handler for the form redirection completion.
+ */
+Drupal.ajax.prototype.success = function (response, status) {
+  // Remove the progress element.
+  if (this.progress.element) {
+    $(this.progress.element).remove();
+  }
+  if (this.progress.object) {
+    this.progress.object.stopMonitoring();
+  }
+  $(this.element).removeClass('progress-disabled').removeAttr('disabled');
+
+  Drupal.freezeHeight();
+
+  for (var i in response) {
+    if (response.hasOwnProperty(i) && response[i]['command'] && this.commands[response[i]['command']]) {
+      this.commands[response[i]['command']](this, response[i], status);
+    }
+  }
+
+  // Reattach behaviors, if they were detached in beforeSerialize(). The
+  // attachBehaviors() called on the new content from processing the response
+  // commands is not sufficient, because behaviors from the entire form need
+  // to be reattached.
+  if (this.form) {
+    var settings = this.settings || Drupal.settings;
+    Drupal.attachBehaviors(this.form, settings);
+  }
+
+  Drupal.unfreezeHeight();
+
+  // Remove any response-specific settings so they don't get used on the next
+  // call by mistake.
+  this.settings = null;
+};
+
+/**
+ * Build an effect object which tells us how to apply the effect when adding new HTML.
+ */
+Drupal.ajax.prototype.getEffect = function (response) {
+  var type = response.effect || this.effect;
+  var speed = response.speed || this.speed;
+
+  var effect = {};
+  if (type == 'none') {
+    effect.showEffect = 'show';
+    effect.hideEffect = 'hide';
+    effect.showSpeed = '';
+  }
+  else if (type == 'fade') {
+    effect.showEffect = 'fadeIn';
+    effect.hideEffect = 'fadeOut';
+    effect.showSpeed = speed;
+  }
+  else {
+    effect.showEffect = type + 'Toggle';
+    effect.hideEffect = type + 'Toggle';
+    effect.showSpeed = speed;
+  }
+
+  return effect;
+};
+
+/**
+ * Handler for the form redirection error.
+ */
+Drupal.ajax.prototype.error = function (xmlhttprequest, uri, customMessage) {
+  Drupal.displayAjaxError(Drupal.ajaxError(xmlhttprequest, uri, customMessage));
+  // Remove the progress element.
+  if (this.progress.element) {
+    $(this.progress.element).remove();
+  }
+  if (this.progress.object) {
+    this.progress.object.stopMonitoring();
+  }
+  // Undo hide.
+  $(this.wrapper).show();
+  // Re-enable the element.
+  $(this.element).removeClass('progress-disabled').removeAttr('disabled');
+  // Reattach behaviors, if they were detached in beforeSerialize().
+  if (this.form) {
+    var settings = this.settings || Drupal.settings;
+    Drupal.attachBehaviors(this.form, settings);
+  }
+};
+
+/**
+ * Provide a series of commands that the server can request the client perform.
+ */
+Drupal.ajax.prototype.commands = {
+  /**
+   * Command to insert new content into the DOM.
+   */
+  insert: function (ajax, response, status) {
+    // Get information from the response. If it is not there, default to
+    // our presets.
+    var wrapper = response.selector ? $(response.selector) : $(ajax.wrapper);
+    var method = response.method || ajax.method;
+    var effect = ajax.getEffect(response);
+
+    // We don't know what response.data contains: it might be a string of text
+    // without HTML, so don't rely on jQuery correctly iterpreting
+    // $(response.data) as new HTML rather than a CSS selector. Also, if
+    // response.data contains top-level text nodes, they get lost with either
+    // $(response.data) or $('<div></div>').replaceWith(response.data).
+    var new_content_wrapped = $('<div></div>').html(response.data);
+    var new_content = new_content_wrapped.contents();
+
+    // For legacy reasons, the effects processing code assumes that new_content
+    // consists of a single top-level element. Also, it has not been
+    // sufficiently tested whether attachBehaviors() can be successfully called
+    // with a context object that includes top-level text nodes. However, to
+    // give developers full control of the HTML appearing in the page, and to
+    // enable Ajax content to be inserted in places where DIV elements are not
+    // allowed (e.g., within TABLE, TR, and SPAN parents), we check if the new
+    // content satisfies the requirement of a single top-level element, and
+    // only use the container DIV created above when it doesn't. For more
+    // information, please see http://drupal.org/node/736066.
+    if (new_content.length != 1 || new_content.get(0).nodeType != 1) {
+      new_content = new_content_wrapped;
+    }
+
+    // If removing content from the wrapper, detach behaviors first.
+    switch (method) {
+      case 'html':
+      case 'replaceWith':
+      case 'replaceAll':
+      case 'empty':
+      case 'remove':
+        var settings = response.settings || ajax.settings || Drupal.settings;
+        Drupal.detachBehaviors(wrapper, settings);
+    }
+
+    // Add the new content to the page.
+    wrapper[method](new_content);
+
+    // Immediately hide the new content if we're using any effects.
+    if (effect.showEffect != 'show') {
+      new_content.hide();
+    }
+
+    // Determine which effect to use and what content will receive the
+    // effect, then show the new content.
+    if ($('.ajax-new-content', new_content).length > 0) {
+      $('.ajax-new-content', new_content).hide();
+      new_content.show();
+      $('.ajax-new-content', new_content)[effect.showEffect](effect.showSpeed);
+    }
+    else if (effect.showEffect != 'show') {
+      new_content[effect.showEffect](effect.showSpeed);
+    }
+
+    // Attach all JavaScript behaviors to the new content, if it was successfully
+    // added to the page, this if statement allows #ajax['wrapper'] to be
+    // optional.
+    if (new_content.parents('html').length > 0) {
+      // Apply any settings from the returned JSON if available.
+      var settings = response.settings || ajax.settings || Drupal.settings;
+      Drupal.attachBehaviors(new_content, settings);
+    }
+  },
+
+  /**
+   * Command to remove a chunk from the page.
+   */
+  remove: function (ajax, response, status) {
+    var settings = response.settings || ajax.settings || Drupal.settings;
+    Drupal.detachBehaviors($(response.selector), settings);
+    $(response.selector).remove();
+  },
+
+  /**
+   * Command to mark a chunk changed.
+   */
+  changed: function (ajax, response, status) {
+    if (!$(response.selector).hasClass('ajax-changed')) {
+      $(response.selector).addClass('ajax-changed');
+      if (response.asterisk) {
+        $(response.selector).find(response.asterisk).append(' <span class="ajax-changed">*</span> ');
+      }
+    }
+  },
+
+  /**
+   * Command to provide an alert.
+   */
+  alert: function (ajax, response, status) {
+    alert(response.text, response.title);
+  },
+
+  /**
+   * Command to provide the jQuery css() function.
+   */
+  css: function (ajax, response, status) {
+    $(response.selector).css(response.argument);
+  },
+
+  /**
+   * Command to set the settings that will be used for other commands in this response.
+   */
+  settings: function (ajax, response, status) {
+    if (response.merge) {
+      $.extend(true, Drupal.settings, response.settings);
+    }
+    else {
+      ajax.settings = response.settings;
+    }
+  },
+
+  /**
+   * Command to attach data using jQuery's data API.
+   */
+  data: function (ajax, response, status) {
+    $(response.selector).data(response.name, response.value);
+  },
+
+  /**
+   * Command to apply a jQuery method.
+   */
+  invoke: function (ajax, response, status) {
+    var $element = $(response.selector);
+    $element[response.method].apply($element, response.arguments);
+  },
+
+  /**
+   * Command to restripe a table.
+   */
+  restripe: function (ajax, response, status) {
+    // :even and :odd are reversed because jQuery counts from 0 and
+    // we count from 1, so we're out of sync.
+    // Match immediate children of the parent element to allow nesting.
+    $('> tbody > tr:visible, > tr:visible', $(response.selector))
+      .removeClass('odd even')
+      .filter(':even').addClass('odd').end()
+      .filter(':odd').addClass('even');
+  },
+
+  /**
+   * Command to add css.
+   *
+   * Uses the proprietary addImport method if available as browsers which
+   * support that method ignore @import statements in dynamically added
+   * stylesheets.
+   */
+  add_css: function (ajax, response, status) {
+    // Add the styles in the normal way.
+    $('head').prepend(response.data);
+    // Add imports in the styles using the addImport method if available.
+    var match, importMatch = /^@import url\("(.*)"\);$/igm;
+    if (document.styleSheets[0].addImport && importMatch.test(response.data)) {
+      importMatch.lastIndex = 0;
+      while (match = importMatch.exec(response.data)) {
+        document.styleSheets[0].addImport(match[1]);
+      }
+    }
+  },
+
+  /**
+   * Command to update a form's build ID.
+   */
+  updateBuildId: function(ajax, response, status) {
+    $('input[name="form_build_id"][value="' + response['old'] + '"]').val(response['new']);
+  }
+};
+
+})(jQuery);