Implement <hr> 'color' attribute

components/script/dom/htmlhrelement.rs

@@ -2,11 +2,17 @@
  * 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::codegen::Bindings::HTMLHRElementBinding;
-use dom::bindings::js::Root;
+use cssparser::RGBA;
+use dom::attr::AttrValue;
+use dom::bindings::codegen::Bindings::HTMLHRElementBinding::{self, HTMLHRElementMethods};
+use dom::bindings::inheritance::Castable;
+use dom::bindings::js::{LayoutJS, Root};
 use dom::document::Document;
+use dom::element::{Element, RawLayoutElementHelpers};
 use dom::htmlelement::HTMLElement;
 use dom::node::Node;
+use dom::virtualmethods::VirtualMethods;
+use string_cache::Atom;
 use util::str::DOMString;
 
 #[dom_struct]
@@ -29,3 +35,44 @@ impl HTMLHRElement {
         Node::reflect_node(box element, document, HTMLHRElementBinding::Wrap)
     }
 }
+
+impl HTMLHRElementMethods for HTMLHRElement {
+    // https://html.spec.whatwg.org/multipage/#dom-hr-color
+    make_getter!(Color);
+
+    // https://html.spec.whatwg.org/multipage/#dom-hr-color
+    fn SetColor(&self, value: DOMString) {
+        self.upcast::<Element>()
+            .set_attribute(&atom!("color"), AttrValue::from_legacy_color(value));
+    }
+}
+
+pub trait HTMLHRLayoutHelpers {
+    fn get_color(&self) -> Option<RGBA>;
+}
+
+impl HTMLHRLayoutHelpers for LayoutJS<HTMLHRElement> {
+    #[allow(unsafe_code)]
+    fn get_color(&self) -> Option<RGBA> {
+        unsafe {
+            (&*self.upcast::<Element>().unsafe_get())
+                .get_attr_for_layout(&ns!(""), &atom!("color"))
+                .and_then(AttrValue::as_color)
+                .cloned()
+        }
+    }
+}
+
+
+impl VirtualMethods for HTMLHRElement {
+    fn super_type(&self) -> Option<&VirtualMethods> {
+        Some(self.upcast::<HTMLElement>() as &VirtualMethods)
+    }
+
+    fn parse_plain_attribute(&self, name: &Atom, value: DOMString) -> AttrValue {
+        match name {
+            &atom!("color") => AttrValue::from_legacy_color(value),
+            _ => self.super_type().unwrap().parse_plain_attribute(name, value),
+        }
+    }
+}