Bug 1331291 part 1 - Set stylesheet url_data correctly for import rule.

components/script/dom/cssstyledeclaration.rs

@@ -147,7 +147,7 @@ impl CSSStyleOwner {
         match *self {
             CSSStyleOwner::Element(ref el) => window_from_node(&**el).Document().base_url(),
             CSSStyleOwner::CSSRule(ref rule, _) => {
-                rule.parent_stylesheet().style_stylesheet().url_data.clone()
+                (*rule.parent_stylesheet().style_stylesheet().url_data.read()).clone()
             }
         }
     }

components/script/dom/htmlmetaelement.rs

@@ -19,6 +19,7 @@ use dom::node::{Node, UnbindContext, document_from_node, window_from_node};
 use dom::virtualmethods::VirtualMethods;
 use dom_struct::dom_struct;
 use html5ever::{LocalName, Prefix};
+use parking_lot::RwLock;
 use servo_config::prefs::PREFS;
 use std::ascii::AsciiExt;
 use std::sync::atomic::AtomicBool;
@@ -105,7 +106,7 @@ impl HTMLMetaElement {
                         rules: CssRules::new(vec![rule], shared_lock),
                         origin: Origin::Author,
                         shared_lock: shared_lock.clone(),
-                        url_data: window_from_node(self).get_url(),
+                        url_data: RwLock::new(window_from_node(self).get_url()),
                         namespaces: Default::default(),
                         media: Arc::new(shared_lock.wrap(MediaList::empty())),
                         // Viewport constraints are always recomputed on resize; they don't need to

components/script/stylesheet_loader.rs

@@ -160,7 +160,7 @@ impl FetchResponseListener for StylesheetContext {
                                                   &data,
                                                   protocol_encoding_label,
                                                   Some(environment_encoding),
-                                                  &final_url,
+                                                  final_url,
                                                   Some(&loader),
                                                   win.css_error_reporter());
                 }

components/style/encoding_support.rs

@@ -79,7 +79,7 @@ impl Stylesheet {
                              bytes: &[u8],
                              protocol_encoding_label: Option<&str>,
                              environment_encoding: Option<EncodingRef>,
-                             url_data: &UrlExtraData,
+                             url_data: UrlExtraData,
                              stylesheet_loader: Option<&StylesheetLoader>,
                              error_reporter: &ParseErrorReporter) {
         let (string, _) = decode_stylesheet_bytes(

components/style/stylesheets/keyframes_rule.rs

@@ -205,9 +205,10 @@ impl Keyframe {
     /// Parse a CSS keyframe.
     pub fn parse<'i>(css: &'i str, parent_stylesheet: &Stylesheet)
                      -> Result<Arc<Locked<Self>>, ParseError<'i>> {
+        let url_data = parent_stylesheet.url_data.read();
         let error_reporter = NullReporter;
         let context = ParserContext::new(parent_stylesheet.origin,
-                                         &parent_stylesheet.url_data,
+                                         &url_data,
                                          &error_reporter,
                                          Some(CssRuleType::Keyframe),
                                          PARSING_MODE_DEFAULT,

components/style/stylesheets/mod.rs

@@ -224,10 +224,11 @@ impl CssRule {
         state: Option<State>,
         loader: Option<&StylesheetLoader>
     ) -> Result<(Self, State), SingleRuleParseError> {
+        let url_data = parent_stylesheet.url_data.read();
         let error_reporter = NullReporter;
         let context = ParserContext::new(
             parent_stylesheet.origin,
-            &parent_stylesheet.url_data,
+            &url_data,
             &error_reporter,
             None,
             PARSING_MODE_DEFAULT,

components/style/stylesheets/rule_parser.rs

@@ -180,7 +180,7 @@ impl<'a, 'i> AtRuleParser<'i> for TopLevelRuleParser<'a> {
                             media: media,
                             shared_lock: self.shared_lock.clone(),
                             origin: self.context.stylesheet_origin,
-                            url_data: self.context.url_data.clone(),
+                            url_data: RwLock::new(self.context.url_data.clone()),
                             namespaces: RwLock::new(Namespaces::default()),
                             dirty_on_viewport_size_change: AtomicBool::new(false),
                             disabled: AtomicBool::new(false),

components/style/stylesheets/stylesheet.rs

@@ -52,7 +52,7 @@ pub struct Stylesheet {
     /// The origin of this stylesheet.
     pub origin: Origin,
     /// The url data this stylesheet should use.
-    pub url_data: UrlExtraData,
+    pub url_data: RwLock<UrlExtraData>,
     /// The lock used for objects inside this stylesheet
     pub shared_lock: SharedRwLock,
     /// The namespaces that apply to this stylesheet.
@@ -69,17 +69,15 @@ impl Stylesheet {
     /// Updates an empty stylesheet from a given string of text.
     pub fn update_from_str(existing: &Stylesheet,
                            css: &str,
-                           url_data: &UrlExtraData,
+                           url_data: UrlExtraData,
                            stylesheet_loader: Option<&StylesheetLoader>,
                            error_reporter: &ParseErrorReporter,
                            line_number_offset: u64) {
         let namespaces = RwLock::new(Namespaces::default());
-        // FIXME: we really should update existing.url_data with the given url_data,
-        // otherwise newly inserted rule may not have the right base url.
         let (rules, dirty_on_viewport_size_change) =
             Stylesheet::parse_rules(
                 css,
-                url_data,
+                &url_data,
                 existing.origin,
                 &mut *namespaces.write(),
                 &existing.shared_lock,
@@ -89,6 +87,7 @@ impl Stylesheet {
                 line_number_offset
             );
 
+        *existing.url_data.write() = url_data;
         mem::swap(&mut *existing.namespaces.write(), &mut *namespaces.write());
         existing.dirty_on_viewport_size_change
             .store(dirty_on_viewport_size_change, Ordering::Release);
@@ -184,7 +183,7 @@ impl Stylesheet {
 
         Stylesheet {
             origin: origin,
-            url_data: url_data,
+            url_data: RwLock::new(url_data),
             namespaces: namespaces,
             rules: CssRules::new(rules, &shared_lock),
             media: media,
@@ -287,7 +286,7 @@ impl Clone for Stylesheet {
             rules: Arc::new(lock.wrap(cloned_rules)),
             media: Arc::new(lock.wrap(cloned_media)),
             origin: self.origin,
-            url_data: self.url_data.clone(),
+            url_data: RwLock::new((*self.url_data.read()).clone()),
             shared_lock: lock,
             namespaces: RwLock::new((*self.namespaces.read()).clone()),
             dirty_on_viewport_size_change: AtomicBool::new(

ports/geckolib/glue.rs

@@ -801,7 +801,7 @@ pub extern "C" fn Servo_StyleSheet_ClearAndUpdate(stylesheet: RawServoStyleSheet
     };
 
     let sheet = Stylesheet::as_arc(&stylesheet);
-    Stylesheet::update_from_str(&sheet, input, url_data, loader,
+    Stylesheet::update_from_str(&sheet, input, url_data.clone(), loader,
                                 &RustLogReporter, line_number_offset as u64);
 }
 

tests/unit/style/stylesheets.rs

@@ -76,7 +76,7 @@ fn test_parse_stylesheet() {
         media: Arc::new(stylesheet.shared_lock.wrap(MediaList::empty())),
         shared_lock: stylesheet.shared_lock.clone(),
         namespaces: RwLock::new(namespaces),
-        url_data: url,
+        url_data: RwLock::new(url),
         dirty_on_viewport_size_change: AtomicBool::new(false),
         disabled: AtomicBool::new(false),
         quirks_mode: QuirksMode::NoQuirks,