From 62e874b348fe64490952a12f419164e26ea98d21 Mon Sep 17 00:00:00 2001
From: David Rothstein <drothstein@gmail.com>
Date: Mon, 3 Nov 2014 00:39:48 -0500
Subject: Issue #1071818 by JeremyFrench, nod_, Cottser, gielfeldt, xjm,
 anthbel, reglogge, NROTC_Webmaster, kristofferwiklund, lliss, sun | sepgil:
 Fixed Lazy-loading CSS fails in IE.

---
 misc/ajax.js | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'misc/ajax.js')

diff --git a/misc/ajax.js b/misc/ajax.js
index 3b9dec614..01b894d75 100644
--- a/misc/ajax.js
+++ b/misc/ajax.js
@@ -618,6 +618,26 @@ Drupal.ajax.prototype.commands = {
       .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.
    */
-- 
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