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web/modules/contrib/webform/js/webform.element.help.js

@@ -0,0 +1,73 @@
+/**
+ * @file
+ * JavaScript behaviors for element help text (tooltip).
+ */
+
+(function ($, Drupal) {
+
+  'use strict';
+
+  // @see http://api.jqueryui.com/tooltip/
+  Drupal.webform = Drupal.webform || {};
+  Drupal.webform.elementHelpIcon = Drupal.webform.elementHelpIcon || {};
+  Drupal.webform.elementHelpIcon.options = Drupal.webform.elementHelpIcon.options || {
+    position: {my: 'left+5 top+5', at: 'left bottom', collision: 'flipfit'},
+    tooltipClass: 'webform-element-help--tooltip',
+    // @see https://stackoverflow.com/questions/18231315/jquery-ui-tooltip-html-with-links
+    show: {delay: 100},
+    close: function (event, ui) {
+      ui.tooltip.hover(
+        function () {
+          $(this).stop(true).fadeTo(400, 1);
+        },
+        function () {
+          $(this).fadeOut('400', function () {
+            $(this).remove();
+          });
+        });
+    }
+  };
+
+  /**
+   * Element help icon.
+   *
+   * @type {Drupal~behavior}
+   */
+  Drupal.behaviors.webformElementHelpIcon = {
+    attach: function (context) {
+      $(context).find('.webform-element-help').once('webform-element-help').each(function () {
+        var $link = $(this);
+
+        var options = $.extend({
+          // Use 'data-webform-help' attribute which can include HTML markup.
+          content: $link.attr('data-webform-help'),
+          items: '[data-webform-help]'
+        }, Drupal.webform.elementHelpIcon.options);
+
+        $link.tooltip(options)
+          .on('click', function (event) {
+            // Prevent click from toggling <label>s wrapped around help.
+            event.preventDefault();
+          });
+
+        // Help tooltips are generally placed with <label> tags.
+        // Screen readers are also reading the <label> and the
+        // 'aria-describedby' attribute.
+        // To prevent this issue we are removing the <label>'s 'for' attribute
+        // when the tooltip is focused.
+        var $label = $(this).parent('label');
+        var labelFor = $label.attr('for') || '';
+        if ($label.length && labelFor) {
+          $link
+            .on('focus', function () {
+              $label.removeAttr('for');
+            })
+            .on('blur', function () {
+              $label.attr('for', labelFor);
+            });
+        }
+      });
+    }
+  };
+
+})(jQuery, Drupal);