Backed out changeset 67769dac78c4 for busting builds CLOSED TREE

Backs out #18519

components/layout_thread/dom_wrapper.rs

@@ -547,14 +547,6 @@ impl<'le> TElement for ServoLayoutElement<'le> {
         };
         extended_filtering(&element_lang, &*value)
     }
-
-    fn is_html_document_body_element(&self) -> bool {
-        // This is only used for the "tables inherit from body" quirk, which we
-        // don't implement.
-        //
-        // FIXME(emilio): We should be able to give the right answer though!
-        false
-    }
 }
 
 impl<'le> PartialEq for ServoLayoutElement<'le> {

components/style/dom.rs

@@ -685,33 +685,31 @@ pub trait TElement : Eq + PartialEq + Debug + Hash + Sized + Copy + Clone +
     /// we can perform the more thoroughgoing check, needs_transitions_update, to further
     /// reduce the possibility of false positives.
     #[cfg(feature = "gecko")]
-    fn might_need_transitions_update(
-        &self,
-        old_values: Option<&ComputedValues>,
-        new_values: &ComputedValues
-    ) -> bool;
+    fn might_need_transitions_update(&self,
+                                     old_values: Option<&ComputedValues>,
+                                     new_values: &ComputedValues)
+                                     -> bool;
 
     /// Returns true if one of the transitions needs to be updated on this element. We check all
     /// the transition properties to make sure that updating transitions is necessary.
     /// This method should only be called if might_needs_transitions_update returns true when
     /// passed the same parameters.
     #[cfg(feature = "gecko")]
-    fn needs_transitions_update(
-        &self,
-        before_change_style: &ComputedValues,
-        after_change_style: &ComputedValues
-    ) -> bool;
+    fn needs_transitions_update(&self,
+                                before_change_style: &ComputedValues,
+                                after_change_style: &ComputedValues)
+                                -> bool;
 
     /// Returns true if we need to update transitions for the specified property on this element.
     #[cfg(feature = "gecko")]
-    fn needs_transitions_update_per_property(
-        &self,
-        property: &TransitionProperty,
-        combined_duration: f32,
-        before_change_style: &ComputedValues,
-        after_change_style: &ComputedValues,
-        existing_transitions: &HashMap<TransitionProperty, Arc<AnimationValue>>
-    ) -> bool;
+    fn needs_transitions_update_per_property(&self,
+                                             property: &TransitionProperty,
+                                             combined_duration: f32,
+                                             before_change_style: &ComputedValues,
+                                             after_change_style: &ComputedValues,
+                                             existing_transitions: &HashMap<TransitionProperty,
+                                                                            Arc<AnimationValue>>)
+                                             -> bool;
 
     /// Returns the value of the `xml:lang=""` attribute (or, if appropriate,
     /// the `lang=""` attribute) on this element.
@@ -722,15 +720,10 @@ pub trait TElement : Eq + PartialEq + Debug + Hash + Sized + Copy + Clone +
     /// of the `xml:lang=""` or `lang=""` attribute to use in place of
     /// looking at the element and its ancestors.  (This argument is used
     /// to implement matching of `:lang()` against snapshots.)
-    fn match_element_lang(
-        &self,
-        override_lang: Option<Option<AttrValue>>,
-        value: &PseudoClassStringArg
-    ) -> bool;
-
-    /// Returns whether this element is the main body element of the HTML
-    /// document it is on.
-    fn is_html_document_body_element(&self) -> bool;
+    fn match_element_lang(&self,
+                          override_lang: Option<Option<AttrValue>>,
+                          value: &PseudoClassStringArg)
+                          -> bool;
 }
 
 /// TNode and TElement aren't Send because we want to be careful and explicit

components/style/gecko/generated/bindings.rs

@@ -1551,7 +1551,8 @@ extern "C" {
                                                  *mut nsCSSCounterStyleRule);
 }
 extern "C" {
-    pub fn Gecko_IsDocumentBody(element: RawGeckoElementBorrowed) -> bool;
+    pub fn Gecko_GetBody(pres_context: RawGeckoPresContextBorrowed)
+     -> RawGeckoElementBorrowedOrNull;
 }
 extern "C" {
     pub fn Gecko_GetLookAndFeelSystemColor(color_id: i32,

components/style/gecko/media_queries.rs

@@ -11,7 +11,7 @@ use cssparser::{CssStringWriter, Parser, RGBA, Token, BasicParseError};
 use euclid::ScaleFactor;
 use euclid::Size2D;
 use font_metrics::get_metrics_provider_for_product;
-use gecko::values::{convert_nscolor_to_rgba, convert_rgba_to_nscolor};
+use gecko::values::convert_nscolor_to_rgba;
 use gecko_bindings::bindings;
 use gecko_bindings::structs;
 use gecko_bindings::structs::{nsCSSKeyword, nsCSSProps_KTableEntry, nsCSSValue, nsCSSUnit};
@@ -27,7 +27,7 @@ use rule_cache::RuleCacheConditions;
 use servo_arc::Arc;
 use std::cell::RefCell;
 use std::fmt::{self, Write};
-use std::sync::atomic::{AtomicBool, AtomicIsize, AtomicUsize, Ordering};
+use std::sync::atomic::{AtomicBool, AtomicIsize, Ordering};
 use str::starts_with_ignore_ascii_case;
 use string_cache::Atom;
 use style_traits::{CSSPixel, DevicePixel};
@@ -54,11 +54,6 @@ pub struct Device {
     /// the parent to compute everything else. So it is correct to just use
     /// a relaxed atomic here.
     root_font_size: AtomicIsize,
-    /// The body text color, stored as an `nscolor`, used for the "tables
-    /// inherit from body" quirk.
-    ///
-    /// https://quirks.spec.whatwg.org/#the-tables-inherit-color-from-body-quirk
-    body_text_color: AtomicUsize,
     /// Whether any styles computed in the document relied on the root font-size
     /// by using rem units.
     used_root_font_size: AtomicBool,
@@ -79,7 +74,6 @@ impl Device {
             default_values: ComputedValues::default_values(unsafe { &*pres_context }),
             // FIXME(bz): Seems dubious?
             root_font_size: AtomicIsize::new(font_size::get_initial_value().0.to_i32_au() as isize),
-            body_text_color: AtomicUsize::new(unsafe { &*pres_context }.mDefaultColor as usize),
             used_root_font_size: AtomicBool::new(false),
             used_viewport_size: AtomicBool::new(false),
         }
@@ -116,18 +110,6 @@ impl Device {
         self.root_font_size.store(size.0 as isize, Ordering::Relaxed)
     }
 
-    /// Sets the body text color for the "inherit color from body" quirk.
-    ///
-    /// https://quirks.spec.whatwg.org/#the-tables-inherit-color-from-body-quirk
-    pub fn set_body_text_color(&self, color: RGBA) {
-        self.body_text_color.store(convert_rgba_to_nscolor(&color) as usize, Ordering::Relaxed)
-    }
-
-    /// Returns the body text color.
-    pub fn body_text_color(&self) -> RGBA {
-        convert_nscolor_to_rgba(self.body_text_color.load(Ordering::Relaxed) as u32)
-    }
-
     /// Gets the pres context associated with this document.
     pub fn pres_context(&self) -> &nsPresContext {
         unsafe { &*self.pres_context }

components/style/gecko/wrapper.rs

@@ -593,10 +593,6 @@ impl<'le> GeckoElement<'le> {
         self.as_node().node_info().mInner.mNamespaceID
     }
 
-    fn is_html_element(&self) -> bool {
-        self.namespace_id() == (structs::root::kNameSpaceID_XHTML as i32)
-    }
-
     fn is_xul_element(&self) -> bool {
         self.namespace_id() == (structs::root::kNameSpaceID_XUL as i32)
     }
@@ -1488,11 +1484,11 @@ impl<'le> TElement for GeckoElement<'le> {
         }
     }
 
-    fn match_element_lang(
-        &self,
-        override_lang: Option<Option<AttrValue>>,
-        value: &PseudoClassStringArg
-    ) -> bool {
+    fn match_element_lang(&self,
+                          override_lang: Option<Option<AttrValue>>,
+                          value: &PseudoClassStringArg)
+                          -> bool
+    {
         // Gecko supports :lang() from CSS Selectors 3, which only accepts a
         // single language tag, and which performs simple dash-prefix matching
         // on it.
@@ -1506,18 +1502,6 @@ impl<'le> TElement for GeckoElement<'le> {
             Gecko_MatchLang(self.0, override_lang_ptr, override_lang.is_some(), value.as_ptr())
         }
     }
-
-    fn is_html_document_body_element(&self) -> bool {
-        if self.get_local_name() != &*local_name!("body") {
-            return false;
-        }
-
-        if !self.is_html_element() {
-            return false;
-        }
-
-        unsafe { bindings::Gecko_IsDocumentBody(self.0) }
-    }
 }
 
 impl<'le> PartialEq for GeckoElement<'le> {
@@ -1738,12 +1722,11 @@ impl<'le> ::selectors::Element for GeckoElement<'le> {
         None
     }
 
-    fn attr_matches(
-        &self,
-        ns: &NamespaceConstraint<&Namespace>,
-        local_name: &Atom,
-        operation: &AttrSelectorOperation<&Atom>
-    ) -> bool {
+    fn attr_matches(&self,
+                    ns: &NamespaceConstraint<&Namespace>,
+                    local_name: &Atom,
+                    operation: &AttrSelectorOperation<&Atom>)
+                    -> bool {
         unsafe {
             match *operation {
                 AttrSelectorOperation::Exists => {
@@ -2027,8 +2010,10 @@ impl<'le> ::selectors::Element for GeckoElement<'le> {
     }
 
     fn is_html_element_in_html_document(&self) -> bool {
-        self.is_html_element() &&
-        self.as_node().owner_doc().mType == structs::root::nsIDocument_Type::eHTML
+        let node = self.as_node();
+        let node_info = node.node_info();
+        node_info.mInner.mNamespaceID == (structs::root::kNameSpaceID_XHTML as i32) &&
+        node.owner_doc().mType == structs::root::nsIDocument_Type::eHTML
     }
 
     fn ignores_nth_child_selectors(&self) -> bool {

components/style/matching.rs

@@ -7,8 +7,7 @@
 #![allow(unsafe_code)]
 #![deny(missing_docs)]
 
-use context::{ElementCascadeInputs, QuirksMode, SelectorFlagsMap};
-use context::{SharedStyleContext, StyleContext};
+use context::{ElementCascadeInputs, SelectorFlagsMap, SharedStyleContext, StyleContext};
 use data::ElementData;
 use dom::TElement;
 use invalidation::element::restyle_hints::{RESTYLE_CSS_ANIMATIONS, RESTYLE_CSS_TRANSITIONS};
@@ -552,6 +551,10 @@ pub trait MatchMethods : TElement {
 
         // Propagate the "can be fragmented" bit. It would be nice to
         // encapsulate this better.
+        //
+        // Note that this is technically not needed for pseudos since we already
+        // do that when we resolve the non-pseudo style, but it doesn't hurt
+        // anyway.
         if cfg!(feature = "servo") {
             let layout_parent =
                 self.inheritance_parent().map(|e| e.layout_parent());
@@ -587,21 +590,6 @@ pub trait MatchMethods : TElement {
             }
         }
 
-        if context.shared.stylist.quirks_mode() == QuirksMode::Quirks {
-            if self.is_html_document_body_element() {
-                // NOTE(emilio): We _could_ handle dynamic changes to it if it
-                // changes and before we reach our children the cascade stops,
-                // but we don't track right now whether we use the document body
-                // color, and nobody else handles that properly anyway.
-
-                let device = context.shared.stylist.device();
-
-                // Needed for the "inherit from body" quirk.
-                let text_color = new_primary_style.get_color().clone_color();
-                device.set_body_text_color(text_color);
-            }
-        }
-
         // Don't accumulate damage if we're in a forgetful traversal.
         if context.shared.traversal_flags.contains(traversal_flags::Forgetful) {
             return ChildCascadeRequirement::MustCascadeChildren;

components/style/servo/media_queries.rs

@@ -92,13 +92,6 @@ impl Device {
         self.root_font_size.store(size.0 as isize, Ordering::Relaxed)
     }
 
-    /// Sets the body text color for the "inherit color from body" quirk.
-    ///
-    /// https://quirks.spec.whatwg.org/#the-tables-inherit-color-from-body-quirk
-    pub fn set_body_text_color(&self, _color: RGBA) {
-        // Servo doesn't implement this quirk (yet)
-    }
-
     /// Returns whether we ever looked up the root font size of the Device.
     pub fn used_root_font_size(&self) -> bool {
         self.used_root_font_size.load(Ordering::Relaxed)

components/style/values/specified/color.rs

@@ -289,7 +289,19 @@ impl ToComputedValue for Color {
             }
             #[cfg(feature = "gecko")]
             Color::InheritFromBodyQuirk => {
-                ComputedColor::rgba(context.device().body_text_color())
+                use dom::TElement;
+                use gecko::wrapper::GeckoElement;
+                use gecko_bindings::bindings::Gecko_GetBody;
+                let pres_context = context.device().pres_context();
+                let body = unsafe { Gecko_GetBody(pres_context) }.map(GeckoElement);
+                let data = body.as_ref().and_then(|wrap| wrap.borrow_data());
+                if let Some(data) = data {
+                    ComputedColor::rgba(data.styles.primary()
+                                            .get_color()
+                                            .clone_color())
+                } else {
+                    convert_nscolor_to_computedcolor(pres_context.mDefaultColor)
+                }
             },
         }
     }