From 9b069325357ae139b8655117b61d26f63e70a200 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Emilio=20Cobos=20=C3=81lvarez?= <emilio@crisal.io>
Date: Fri, 27 Jan 2017 19:39:00 +0100
Subject: [PATCH] script: Fix base url for style-rule-owned declarations.

---
 components/script/dom/csskeyframerule.rs     |  5 ++--
 components/script/dom/cssstyledeclaration.rs | 25 ++++++++++++++------
 components/script/dom/cssstylerule.rs        |  5 ++--
 3 files changed, 24 insertions(+), 11 deletions(-)

diff --git a/components/script/dom/csskeyframerule.rs b/components/script/dom/csskeyframerule.rs
index 9d245d98343c..db0a88edc6fc 100644
--- a/components/script/dom/csskeyframerule.rs
+++ b/components/script/dom/csskeyframerule.rs
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::Bindings::CSSKeyframeRuleBinding::{self, CSSKeyframeRuleMethods};
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, MutNullableJS, Root};
 use dom::bindings::reflector::{DomObject, reflect_dom_object};
 use dom::bindings::str::DOMString;
@@ -47,8 +48,8 @@ impl CSSKeyframeRuleMethods for CSSKeyframeRule {
     fn Style(&self) -> Root<CSSStyleDeclaration> {
         self.style_decl.or_init(|| {
             CSSStyleDeclaration::new(self.global().as_window(),
-                                     CSSStyleOwner::CSSRule(JS::from_ref(self.global().as_window()),
-                                                                 self.keyframerule.read().block.clone()),
+                                     CSSStyleOwner::CSSRule(JS::from_ref(self.upcast()),
+                                                            self.keyframerule.read().block.clone()),
                                      None,
                                      CSSModificationAccess::ReadWrite)
         })
diff --git a/components/script/dom/cssstyledeclaration.rs b/components/script/dom/cssstyledeclaration.rs
index de6deaf7e114..1af030613b96 100644
--- a/components/script/dom/cssstyledeclaration.rs
+++ b/components/script/dom/cssstyledeclaration.rs
@@ -7,12 +7,14 @@ use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
 use dom::bindings::error::{Error, ErrorResult, Fallible};
 use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, Root};
-use dom::bindings::reflector::{Reflector, reflect_dom_object};
+use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object};
 use dom::bindings::str::DOMString;
+use dom::cssrule::CSSRule;
 use dom::element::Element;
 use dom::node::{Node, NodeDamage, window_from_node};
 use dom::window::Window;
 use parking_lot::RwLock;
+use servo_url::ServoUrl;
 use std::ascii::AsciiExt;
 use std::sync::Arc;
 use style::parser::ParserContextExtraData;
@@ -34,7 +36,7 @@ pub struct CSSStyleDeclaration {
 #[must_root]
 pub enum CSSStyleOwner {
     Element(JS<Element>),
-    CSSRule(JS<Window>,
+    CSSRule(JS<CSSRule>,
             #[ignore_heap_size_of = "Arc"]
             Arc<RwLock<PropertyDeclarationBlock>>),
 }
@@ -84,10 +86,10 @@ impl CSSStyleOwner {
                 }
                 result
             }
-            CSSStyleOwner::CSSRule(ref win, ref pdb) => {
+            CSSStyleOwner::CSSRule(ref rule, ref pdb) => {
                 let result = f(&mut *pdb.write(), &mut changed);
                 if changed {
-                    win.Document().invalidate_stylesheets();
+                    rule.global().as_window().Document().invalidate_stylesheets();
                 }
                 result
             }
@@ -119,7 +121,16 @@ impl CSSStyleOwner {
     fn window(&self) -> Root<Window> {
         match *self {
             CSSStyleOwner::Element(ref el) => window_from_node(&**el),
-            CSSStyleOwner::CSSRule(ref window, _) => Root::from_ref(&**window),
+            CSSStyleOwner::CSSRule(ref rule, _) => Root::from_ref(rule.global().as_window()),
+        }
+    }
+
+    fn base_url(&self) -> ServoUrl {
+        match *self {
+            CSSStyleOwner::Element(ref el) => window_from_node(&**el).get_url(),
+            CSSStyleOwner::CSSRule(ref rule, _) => {
+                rule.parent_stylesheet().style_stylesheet().base_url.clone()
+            }
         }
     }
 }
@@ -228,7 +239,7 @@ impl CSSStyleDeclaration {
             // Step 6
             let window = self.owner.window();
             let declarations =
-                parse_one_declaration(id, &value, &window.get_url(),
+                parse_one_declaration(id, &value, &self.owner.base_url(),
                                       window.css_error_reporter(),
                                       ParserContextExtraData::default());
 
@@ -414,7 +425,7 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
         self.owner.mutate_associated_block(|mut pdb, mut _changed| {
             // Step 3
             *pdb = parse_style_attribute(&value,
-                                         &window.get_url(),
+                                         &self.owner.base_url(),
                                          window.css_error_reporter(),
                                          ParserContextExtraData::default());
         });
diff --git a/components/script/dom/cssstylerule.rs b/components/script/dom/cssstylerule.rs
index 1eb6e74df8b4..5bd40dbe88ca 100644
--- a/components/script/dom/cssstylerule.rs
+++ b/components/script/dom/cssstylerule.rs
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use dom::bindings::codegen::Bindings::CSSStyleRuleBinding::{self, CSSStyleRuleMethods};
+use dom::bindings::inheritance::Castable;
 use dom::bindings::js::{JS, MutNullableJS, Root};
 use dom::bindings::reflector::{DomObject, reflect_dom_object};
 use dom::bindings::str::DOMString;
@@ -58,8 +59,8 @@ impl CSSStyleRuleMethods for CSSStyleRule {
     fn Style(&self) -> Root<CSSStyleDeclaration> {
         self.style_decl.or_init(|| {
             CSSStyleDeclaration::new(self.global().as_window(),
-                                     CSSStyleOwner::CSSRule(JS::from_ref(self.global().as_window()),
-                                                                 self.stylerule.read().block.clone()),
+                                     CSSStyleOwner::CSSRule(JS::from_ref(self.upcast()),
+                                                            self.stylerule.read().block.clone()),
                                      None,
                                      CSSModificationAccess::ReadWrite)
         })