Move storage of bgcolor for <tr> and <tbody>.

components/script/dom/htmltablesectionelement.rs

@@ -3,26 +3,25 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use cssparser::RGBA;
-use dom::attr::Attr;
+use dom::attr::AttrValue;
 use dom::bindings::codegen::Bindings::HTMLTableSectionElementBinding::{self, HTMLTableSectionElementMethods};
 use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
 use dom::bindings::error::{ErrorResult, Fallible};
 use dom::bindings::inheritance::Castable;
-use dom::bindings::js::{Root, RootedReference};
+use dom::bindings::js::{LayoutJS, Root, RootedReference};
 use dom::document::Document;
-use dom::element::{AttributeMutation, Element};
+use dom::element::{Element, RawLayoutElementHelpers};
 use dom::htmlcollection::{CollectionFilter, HTMLCollection};
 use dom::htmlelement::HTMLElement;
 use dom::htmltablerowelement::HTMLTableRowElement;
 use dom::node::{Node, window_from_node};
 use dom::virtualmethods::VirtualMethods;
-use std::cell::Cell;
-use util::str::{self, DOMString};
+use string_cache::Atom;
+use util::str::DOMString;
 
 #[dom_struct]
 pub struct HTMLTableSectionElement {
     htmlelement: HTMLElement,
-    background_color: Cell<Option<RGBA>>,
 }
 
 impl HTMLTableSectionElement {
@@ -30,7 +29,6 @@ impl HTMLTableSectionElement {
                      -> HTMLTableSectionElement {
         HTMLTableSectionElement {
             htmlelement: HTMLElement::new_inherited(localName, prefix, document),
-            background_color: Cell::new(None),
         }
     }
 
@@ -40,10 +38,6 @@ impl HTMLTableSectionElement {
         let element = HTMLTableSectionElement::new_inherited(localName, prefix, document);
         Node::reflect_node(box element, document, HTMLTableSectionElementBinding::Wrap)
     }
-
-    pub fn get_background_color(&self) -> Option<RGBA> {
-        self.background_color.get()
-    }
 }
 
 #[derive(JSTraceable)]
@@ -80,20 +74,31 @@ impl HTMLTableSectionElementMethods for HTMLTableSectionElement {
     }
 }
 
+pub trait HTMLTableSectionElementLayoutHelpers {
+    fn get_background_color(&self) -> Option<RGBA>;
+}
+
+#[allow(unsafe_code)]
+impl HTMLTableSectionElementLayoutHelpers for LayoutJS<HTMLTableSectionElement> {
+    fn get_background_color(&self) -> Option<RGBA> {
+        unsafe {
+            (&*self.upcast::<Element>().unsafe_get())
+                .get_attr_for_layout(&ns!(""), &atom!("bgcolor"))
+                .and_then(AttrValue::as_color)
+                .cloned()
+        }
+    }
+}
+
 impl VirtualMethods for HTMLTableSectionElement {
     fn super_type(&self) -> Option<&VirtualMethods> {
         Some(self.upcast::<HTMLElement>() as &VirtualMethods)
     }
 
-    fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
-        self.super_type().unwrap().attribute_mutated(attr, mutation);
-        match *attr.local_name() {
-            atom!(bgcolor) => {
-                self.background_color.set(mutation.new_value(attr).and_then(|value| {
-                    str::parse_legacy_color(&value).ok()
-                }));
-            },
-            _ => {},
+    fn parse_plain_attribute(&self, local_name: &Atom, value: DOMString) -> AttrValue {
+        match *local_name {
+            atom!("bgcolor") => AttrValue::from_legacy_color(value),
+            _ => self.super_type().unwrap().parse_plain_attribute(local_name, value),
         }
     }
 }