1 files changed, 78 insertions, 0 deletions
diff --git a/core/misc/form.js b/core/misc/form.js
new file mode 100644
index 00000000000..259b84eb3f8
--- /dev/null
+++ b/core/misc/form.js
@@ -0,0 +1,78 @@
+(function ($) {
+
+/**
+ * Retrieves the summary for the first element.
+ */
+$.fn.drupalGetSummary = function () {
+  var callback = this.data('summaryCallback');
+  return (this[0] && callback) ? $.trim(callback(this[0])) : '';
+};
+
+/**
+ * Sets the summary for all matched elements.
+ *
+ * @param callback
+ *   Either a function that will be called each time the summary is
+ *   retrieved or a string (which is returned each time).
+ */
+$.fn.drupalSetSummary = function (callback) {
+  var self = this;
+
+  // To facilitate things, the callback should always be a function. If it's
+  // not, we wrap it into an anonymous function which just returns the value.
+  if (typeof callback != 'function') {
+    var val = callback;
+    callback = function () { return val; };
+  }
+
+  return this
+    .data('summaryCallback', callback)
+    // To prevent duplicate events, the handlers are first removed and then
+    // (re-)added.
+    .unbind('formUpdated.summary')
+    .bind('formUpdated.summary', function () {
+      self.trigger('summaryUpdated');
+    })
+    // The actual summaryUpdated handler doesn't fire when the callback is
+    // changed, so we have to do this manually.
+    .trigger('summaryUpdated');
+};
+
+/**
+ * Sends a 'formUpdated' event each time a form element is modified.
+ */
+Drupal.behaviors.formUpdated = {
+  attach: function (context) {
+    // These events are namespaced so that we can remove them later.
+    var events = 'change.formUpdated click.formUpdated blur.formUpdated keyup.formUpdated';
+    $(context)
+      // Since context could be an input element itself, it's added back to
+      // the jQuery object and filtered again.
+      .find(':input').andSelf().filter(':input')
+      // To prevent duplicate events, the handlers are first removed and then
+      // (re-)added.
+      .unbind(events).bind(events, function () {
+        $(this).trigger('formUpdated');
+      });
+  }
+};
+
+/**
+ * Prepopulate form fields with information from the visitor cookie.
+ */
+Drupal.behaviors.fillUserInfoFromCookie = {
+  attach: function (context, settings) {
+    $('form.user-info-from-cookie').once('user-info-from-cookie', function () {
+      var formContext = this;
+      $.each(['name', 'mail', 'homepage'], function () {
+        var $element = $('[name=' + this + ']', formContext);
+        var cookie = $.cookie('Drupal.visitor.' + this);
+        if ($element.length && cookie) {
+          $element.val(cookie);
+        }
+      });
+    });
+  }
+};
+
+})(jQuery);