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Auto merge of #12943 - servo:merged-declaration-block, r=emilio
Merge normal and important declarations in style rules Have a single Vec instead of two. Fix #3426 --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [x] `./mach build -d` does not report any errors - [x] `./mach test-tidy` does not report any errors - [x] These changes fix #3426. <!-- Either: --> - [x] There are tests for these changes OR - [ ] These changes do not require tests because _____ <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> <!-- Reviewable:start --> --- This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/12943) <!-- Reviewable:end -->
This commit is contained in:
bors-servo
GitHub
commit
f8b2be1ea4
24 changed files with 1022 additions and 356 deletions
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@ -10,15 +10,16 @@ use dom::bindings::inheritance::Castable;
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use dom::bindings::js::{JS, Root};
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use dom::bindings::reflector::{Reflector, reflect_dom_object};
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use dom::bindings::str::DOMString;
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use dom::element::{Element, StylePriority};
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use dom::element::Element;
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use dom::node::{Node, NodeDamage, window_from_node};
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use dom::window::Window;
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use std::ascii::AsciiExt;
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use std::ops::Deref;
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use std::cell::Ref;
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use std::slice;
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use string_cache::Atom;
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use style::parser::ParserContextExtraData;
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use style::properties::{Shorthand, is_supported_property};
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use style::properties::{parse_one_declaration, parse_style_attribute};
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use style::properties::{PropertyDeclaration, Shorthand, Importance};
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use style::properties::{is_supported_property, parse_one_declaration, parse_style_attribute};
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use style::selector_impl::PseudoElement;
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// http://dev.w3.org/csswg/cssom/#the-cssstyledeclaration-interface
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@ -91,7 +92,7 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
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fn Length(&self) -> u32 {
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let elem = self.owner.upcast::<Element>();
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let len = match *elem.style_attribute().borrow() {
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Some(ref declarations) => declarations.normal.len() + declarations.important.len(),
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Some(ref declarations) => declarations.declarations.len(),
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None => 0,
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};
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len as u32
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@ -102,19 +103,15 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
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let index = index as usize;
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let elem = self.owner.upcast::<Element>();
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let style_attribute = elem.style_attribute().borrow();
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let result = style_attribute.as_ref().and_then(|declarations| {
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if index > declarations.normal.len() {
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declarations.important
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.get(index - declarations.normal.len())
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.map(|decl| format!("{:?} !important", decl))
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} else {
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declarations.normal
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.get(index)
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.map(|decl| format!("{:?}", decl))
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style_attribute.as_ref().and_then(|declarations| {
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declarations.declarations.get(index)
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}).map(|&(ref declaration, importance)| {
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let mut css = declaration.to_css_string();
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if importance.important() {
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css += " !important";
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}
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});
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result.map_or(DOMString::new(), DOMString::from)
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DOMString::from(css)
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}).unwrap_or_else(DOMString::new)
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}
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// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-getpropertyvalue
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@ -147,15 +144,26 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
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}
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}
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// Step 2.3
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// Work around closures not being Clone
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#[derive(Clone)]
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struct Map<'a, 'b: 'a>(slice::Iter<'a, Ref<'b, (PropertyDeclaration, Importance)>>);
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impl<'a, 'b> Iterator for Map<'a, 'b> {
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type Item = &'a PropertyDeclaration;
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fn next(&mut self) -> Option<Self::Item> {
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self.0.next().map(|r| &r.0)
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}
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}
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// TODO: important is hardcoded to false because method does not implement it yet
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let serialized_value = shorthand.serialize_shorthand_value_to_string(
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list.iter().map(Deref::deref as fn(_) -> _), false);
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Map(list.iter()), Importance::Normal);
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return DOMString::from(serialized_value);
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}
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// Step 3 & 4
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match owner.get_inline_style_declaration(&property) {
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Some(declaration) => DOMString::from(declaration.value()),
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Some(declaration) => DOMString::from(declaration.0.value()),
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None => DOMString::new(),
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}
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}
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@ -176,8 +184,10 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
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}
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// Step 3
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} else {
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if self.owner.get_important_inline_style_declaration(&property).is_some() {
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return DOMString::from("important");
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if let Some(decl) = self.owner.get_inline_style_declaration(&property) {
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if decl.1.important() {
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return DOMString::from("important");
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}
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}
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}
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@ -211,8 +221,8 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
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// Step 5
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let priority = match &*priority {
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"" => StylePriority::Normal,
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p if p.eq_ignore_ascii_case("important") => StylePriority::Important,
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"" => Importance::Normal,
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p if p.eq_ignore_ascii_case("important") => Importance::Important,
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_ => return Ok(()),
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};
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@ -254,8 +264,8 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
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// Step 4
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let priority = match &*priority {
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"" => StylePriority::Normal,
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p if p.eq_ignore_ascii_case("important") => StylePriority::Important,
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"" => Importance::Normal,
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p if p.eq_ignore_ascii_case("important") => Importance::Important,
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_ => return Ok(()),
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};
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@ -354,7 +364,7 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
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// Step 3
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let decl_block = parse_style_attribute(&value, &window.get_url(), window.css_error_reporter(),
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ParserContextExtraData::default());
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*element.style_attribute().borrow_mut() = if decl_block.normal.is_empty() && decl_block.important.is_empty() {
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*element.style_attribute().borrow_mut() = if decl_block.declarations.is_empty() {
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None // Step 2
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} else {
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Some(decl_block)
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@ -71,7 +71,7 @@ use html5ever::serialize::TraversalScope;
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use html5ever::serialize::TraversalScope::{ChildrenOnly, IncludeNode};
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use html5ever::tree_builder::{LimitedQuirks, NoQuirks, Quirks};
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use ref_filter_map::ref_filter_map;
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use selectors::matching::{DeclarationBlock, ElementFlags, matches};
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use selectors::matching::{ElementFlags, matches};
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use selectors::matching::{HAS_SLOW_SELECTOR, HAS_EDGE_CHILD_SELECTOR, HAS_SLOW_SELECTOR_LATER_SIBLINGS};
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use selectors::parser::{AttrSelector, NamespaceConstraint, parse_author_origin_selector_list_from_str};
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use std::ascii::AsciiExt;
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@ -79,7 +79,7 @@ use std::borrow::Cow;
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use std::cell::{Cell, Ref};
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use std::convert::TryFrom;
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use std::default::Default;
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use std::mem;
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use std::fmt;
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use std::sync::Arc;
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use std::sync::atomic::{AtomicUsize, Ordering};
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use string_cache::{Atom, Namespace, QualName};
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@ -87,10 +87,11 @@ use style::attr::{AttrValue, LengthOrPercentageOrAuto};
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use style::element_state::*;
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use style::matching::{common_style_affecting_attributes, rare_style_affecting_attributes};
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use style::parser::ParserContextExtraData;
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use style::properties::DeclaredValue;
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use style::properties::longhands::{self, background_image, border_spacing, font_family, overflow_x, font_size};
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use style::properties::{DeclaredValue, Importance};
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use style::properties::{PropertyDeclaration, PropertyDeclarationBlock, parse_style_attribute};
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use style::selector_impl::{NonTSPseudoClass, ServoSelectorImpl};
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use style::selector_matching::DeclarationBlock;
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use style::sink::Push;
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use style::values::CSSFloat;
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use style::values::specified::{self, CSSColor, CSSRGBA, LengthOrPercentage};
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@ -115,6 +116,16 @@ pub struct Element {
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atomic_flags: AtomicElementFlags,
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}
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impl fmt::Debug for Element {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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try!(write!(f, "<{}", self.local_name));
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if let Some(ref id) = *self.id_attribute.borrow() {
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try!(write!(f, " id={}", id));
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}
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write!(f, ">")
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}
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}
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#[derive(PartialEq, HeapSizeOf)]
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pub enum ElementCreator {
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ParserCreated,
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@ -280,7 +291,7 @@ pub trait LayoutElementHelpers {
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#[allow(unsafe_code)]
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unsafe fn synthesize_presentational_hints_for_legacy_attributes<V>(&self, &mut V)
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where V: Push<DeclarationBlock<Vec<PropertyDeclaration>>>;
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where V: Push<DeclarationBlock>;
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#[allow(unsafe_code)]
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unsafe fn get_colspan(self) -> u32;
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#[allow(unsafe_code)]
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@ -313,11 +324,13 @@ impl LayoutElementHelpers for LayoutJS<Element> {
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#[allow(unsafe_code)]
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unsafe fn synthesize_presentational_hints_for_legacy_attributes<V>(&self, hints: &mut V)
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where V: Push<DeclarationBlock<Vec<PropertyDeclaration>>>
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where V: Push<DeclarationBlock>
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{
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#[inline]
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fn from_declaration(rule: PropertyDeclaration) -> DeclarationBlock<Vec<PropertyDeclaration>> {
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DeclarationBlock::from_declarations(Arc::new(vec![rule]))
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fn from_declaration(rule: PropertyDeclaration) -> DeclarationBlock {
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DeclarationBlock::from_declarations(
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Arc::new(vec![(rule, Importance::Normal)]),
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Importance::Normal)
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}
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let bgcolor = if let Some(this) = self.downcast::<HTMLBodyElement>() {
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@ -660,13 +673,6 @@ impl LayoutElementHelpers for LayoutJS<Element> {
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}
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}
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#[derive(PartialEq, Eq, Copy, Clone, HeapSizeOf)]
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pub enum StylePriority {
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Important,
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Normal,
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}
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impl Element {
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pub fn html_element_in_html_document(&self) -> bool {
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self.namespace == ns!(html) && self.upcast::<Node>().is_in_html_doc()
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@ -756,20 +762,21 @@ impl Element {
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fn remove(element: &Element, property: &str) {
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let mut inline_declarations = element.style_attribute.borrow_mut();
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if let &mut Some(ref mut declarations) = &mut *inline_declarations {
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let index = declarations.normal
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.iter()
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.position(|decl| decl.matches(property));
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let mut importance = None;
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let index = declarations.declarations.iter().position(|&(ref decl, i)| {
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let matching = decl.matches(property);
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if matching {
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importance = Some(i)
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}
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matching
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});
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if let Some(index) = index {
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Arc::make_mut(&mut declarations.normal).remove(index);
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return;
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}
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let index = declarations.important
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.iter()
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.position(|decl| decl.matches(property));
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if let Some(index) = index {
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Arc::make_mut(&mut declarations.important).remove(index);
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return;
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Arc::make_mut(&mut declarations.declarations).remove(index);
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if importance.unwrap().important() {
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declarations.important_count -= 1;
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} else {
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declarations.normal_count -= 1;
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}
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}
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}
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}
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@ -780,81 +787,87 @@ impl Element {
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pub fn update_inline_style(&self,
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declarations: Vec<PropertyDeclaration>,
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style_priority: StylePriority) {
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fn update(element: &Element, mut declarations: Vec<PropertyDeclaration>, style_priority: StylePriority) {
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importance: Importance) {
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fn update(element: &Element, declarations: Vec<PropertyDeclaration>,
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importance: Importance) {
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let mut inline_declarations = element.style_attribute().borrow_mut();
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if let &mut Some(ref mut existing_declarations) = &mut *inline_declarations {
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let existing_declarations = if style_priority == StylePriority::Important {
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&mut existing_declarations.important
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} else {
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&mut existing_declarations.normal
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};
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if let &mut Some(ref mut declaration_block) = &mut *inline_declarations {
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{
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// Usually, the reference count will be 1 here. But transitions could make it greater
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// than that.
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let existing_declarations = Arc::make_mut(&mut declaration_block.declarations);
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// Usually, the reference count will be 1 here. But transitions could make it greater
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// than that.
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let existing_declarations = Arc::make_mut(existing_declarations);
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|
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while let Some(mut incoming_declaration) = declarations.pop() {
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let mut replaced = false;
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for existing_declaration in &mut *existing_declarations {
|
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if existing_declaration.name() == incoming_declaration.name() {
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mem::swap(existing_declaration, &mut incoming_declaration);
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replaced = true;
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break;
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'outer: for incoming_declaration in declarations {
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for existing_declaration in &mut *existing_declarations {
|
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if existing_declaration.0.name() == incoming_declaration.name() {
|
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match (existing_declaration.1, importance) {
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(Importance::Normal, Importance::Important) => {
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declaration_block.normal_count -= 1;
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declaration_block.important_count += 1;
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}
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(Importance::Important, Importance::Normal) => {
|
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declaration_block.normal_count += 1;
|
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declaration_block.important_count -= 1;
|
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}
|
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_ => {}
|
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}
|
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*existing_declaration = (incoming_declaration, importance);
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continue 'outer;
|
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}
|
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}
|
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existing_declarations.push((incoming_declaration, importance));
|
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if importance.important() {
|
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declaration_block.important_count += 1;
|
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} else {
|
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declaration_block.normal_count += 1;
|
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}
|
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}
|
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|
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if !replaced {
|
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// inserting instead of pushing since the declarations are in reverse order
|
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existing_declarations.insert(0, incoming_declaration);
|
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}
|
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}
|
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|
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return;
|
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}
|
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|
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let (important, normal) = if style_priority == StylePriority::Important {
|
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(declarations, vec![])
|
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let (normal_count, important_count) = if importance.important() {
|
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(0, declarations.len() as u32)
|
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} else {
|
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(vec![], declarations)
|
||||
(declarations.len() as u32, 0)
|
||||
};
|
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|
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*inline_declarations = Some(PropertyDeclarationBlock {
|
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important: Arc::new(important),
|
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normal: Arc::new(normal),
|
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declarations: Arc::new(declarations.into_iter().map(|d| (d, importance)).collect()),
|
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normal_count: normal_count,
|
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important_count: important_count,
|
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});
|
||||
}
|
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|
||||
update(self, declarations, style_priority);
|
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update(self, declarations, importance);
|
||||
self.sync_property_with_attrs_style();
|
||||
}
|
||||
|
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pub fn set_inline_style_property_priority(&self,
|
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properties: &[&str],
|
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style_priority: StylePriority) {
|
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new_importance: Importance) {
|
||||
{
|
||||
let mut inline_declarations = self.style_attribute().borrow_mut();
|
||||
if let &mut Some(ref mut declarations) = &mut *inline_declarations {
|
||||
let (from, to) = if style_priority == StylePriority::Important {
|
||||
(&mut declarations.normal, &mut declarations.important)
|
||||
} else {
|
||||
(&mut declarations.important, &mut declarations.normal)
|
||||
};
|
||||
|
||||
// Usually, the reference counts of `from` and `to` will be 1 here. But transitions
|
||||
// could make them greater than that.
|
||||
let from = Arc::make_mut(from);
|
||||
let to = Arc::make_mut(to);
|
||||
let mut new_from = Vec::new();
|
||||
for declaration in from.drain(..) {
|
||||
let name = declaration.name();
|
||||
if properties.iter().any(|p| name == **p) {
|
||||
to.push(declaration)
|
||||
} else {
|
||||
new_from.push(declaration)
|
||||
}
|
||||
}
|
||||
mem::replace(from, new_from);
|
||||
if let &mut Some(ref mut block) = &mut *inline_declarations {
|
||||
// Usually, the reference counts of `from` and `to` will be 1 here. But transitions
|
||||
// could make them greater than that.
|
||||
let declarations = Arc::make_mut(&mut block.declarations);
|
||||
for &mut (ref declaration, ref mut importance) in declarations {
|
||||
if properties.iter().any(|p| declaration.name() == **p) {
|
||||
match (*importance, new_importance) {
|
||||
(Importance::Normal, Importance::Important) => {
|
||||
block.normal_count -= 1;
|
||||
block.important_count += 1;
|
||||
}
|
||||
(Importance::Important, Importance::Normal) => {
|
||||
block.normal_count += 1;
|
||||
block.important_count -= 1;
|
||||
}
|
||||
_ => {}
|
||||
}
|
||||
*importance = new_importance;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -863,25 +876,12 @@ impl Element {
|
|||
|
||||
pub fn get_inline_style_declaration(&self,
|
||||
property: &Atom)
|
||||
-> Option<Ref<PropertyDeclaration>> {
|
||||
-> Option<Ref<(PropertyDeclaration, Importance)>> {
|
||||
ref_filter_map(self.style_attribute.borrow(), |inline_declarations| {
|
||||
inline_declarations.as_ref().and_then(|declarations| {
|
||||
declarations.normal
|
||||
declarations.declarations
|
||||
.iter()
|
||||
.chain(declarations.important.iter())
|
||||
.find(|decl| decl.matches(&property))
|
||||
})
|
||||
})
|
||||
}
|
||||
|
||||
pub fn get_important_inline_style_declaration(&self,
|
||||
property: &Atom)
|
||||
-> Option<Ref<PropertyDeclaration>> {
|
||||
ref_filter_map(self.style_attribute.borrow(), |inline_declarations| {
|
||||
inline_declarations.as_ref().and_then(|declarations| {
|
||||
declarations.important
|
||||
.iter()
|
||||
.find(|decl| decl.matches(&property))
|
||||
.find(|&&(ref decl, _)| decl.matches(&property))
|
||||
})
|
||||
})
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue