From 31a26fa384a676d896e1d924b938037016b07c91 Mon Sep 17 00:00:00 2001
From: Anthony Ramine <n.oxyde@gmail.com>
Date: Tue, 21 Apr 2015 22:54:58 +0200
Subject: [PATCH] Implement the CSS interface

---
 components/script/dom/css.rs                  | 27 +++++++++++++++++++
 components/script/dom/mod.rs                  |  1 +
 components/script/dom/webidls/CSS.webidl      | 12 +++++++++
 .../wpt/mozilla/tests/mozilla/interfaces.html |  1 +
 4 files changed, 41 insertions(+)
 create mode 100644 components/script/dom/css.rs
 create mode 100644 components/script/dom/webidls/CSS.webidl

diff --git a/components/script/dom/css.rs b/components/script/dom/css.rs
new file mode 100644
index 00000000000..5f4bce94d28
--- /dev/null
+++ b/components/script/dom/css.rs
@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::error::{Error, Fallible};
+use dom::bindings::global::GlobalRef;
+use dom::bindings::utils::Reflector;
+use util::str::DOMString;
+
+use cssparser::serialize_identifier;
+
+#[dom_struct]
+pub struct CSS {
+    reflector_: Reflector,
+}
+
+impl CSS {
+    // http://dev.w3.org/csswg/cssom/#serialize-an-identifier
+    pub fn Escape(_: GlobalRef, ident: DOMString) -> Fallible<DOMString> {
+        if ident.bytes().any(|b| b == b'\0') {
+            return Err(Error::InvalidCharacter);
+        }
+        let mut escaped = DOMString::new();
+        serialize_identifier(&ident, &mut escaped).unwrap();
+        Ok(escaped)
+    }
+}
diff --git a/components/script/dom/mod.rs b/components/script/dom/mod.rs
index 9f33d5ec195..00b7a05d348 100644
--- a/components/script/dom/mod.rs
+++ b/components/script/dom/mod.rs
@@ -201,6 +201,7 @@ pub mod canvasgradient;
 pub mod canvaspattern;
 pub mod canvasrenderingcontext2d;
 pub mod characterdata;
+pub mod css;
 pub mod cssstyledeclaration;
 pub mod domrect;
 pub mod domrectlist;
diff --git a/components/script/dom/webidls/CSS.webidl b/components/script/dom/webidls/CSS.webidl
new file mode 100644
index 00000000000..59832c0af15
--- /dev/null
+++ b/components/script/dom/webidls/CSS.webidl
@@ -0,0 +1,12 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * http://dev.w3.org/csswg/cssom/#the-css-interface
+ */
+
+interface CSS {
+  [Throws]
+  static DOMString escape(DOMString ident);
+};
diff --git a/tests/wpt/mozilla/tests/mozilla/interfaces.html b/tests/wpt/mozilla/tests/mozilla/interfaces.html
index 9649a9f3e15..f31afc50ec9 100644
--- a/tests/wpt/mozilla/tests/mozilla/interfaces.html
+++ b/tests/wpt/mozilla/tests/mozilla/interfaces.html
@@ -58,6 +58,7 @@ var interfaceNamesInGlobalScope = [
   "CanvasRenderingContext2D",
   "CanvasPattern",
   "CharacterData",
+  "CSS",
   "CSSStyleDeclaration",
   "DOMRect",
   "Comment",