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Auto merge of #8533 - Ms2ger:legacy, r=nox

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Remove the `legacy` module.

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This commit is contained in:
bors-servo 2015-11-15 19:13:13 +05:30
commit b6f519cd0a
7 changed files with 27 additions and 105 deletions
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4
components/layout/table_cell.rs
View file

@ -20,7 +20,6 @@ use model::MaybeAuto;
use std::fmt;
use std::sync::Arc;
use style::computed_values::{border_collapse, border_top_style};
use style::legacy::UnsignedIntegerAttribute;
use style::properties::ComputedValues;
use table::InternalTable;
use table_row::{CollapsedBorder, CollapsedBorderProvenance};
@ -52,8 +51,7 @@ impl TableCellFlow {
TableCellFlow {
block_flow: BlockFlow::from_fragment(fragment, None),
collapsed_borders: CollapsedBordersForCell::new(),
column_span: node.get_unsigned_integer_attribute(UnsignedIntegerAttribute::ColSpan)
.unwrap_or(1),
column_span: node.get_colspan(),
visible: visible,
}
}

25
components/layout/wrapper.rs
View file

@ -64,7 +64,6 @@ use std::sync::Arc;
use string_cache::{Atom, Namespace};
use style::computed_values::content::ContentItem;
use style::computed_values::{content, display, white_space};
use style::legacy::UnsignedIntegerAttribute;
use style::node::TElementAttributes;
use style::properties::ComputedValues;
use style::properties::{PropertyDeclaration, PropertyDeclarationBlock};
@ -643,12 +642,6 @@ impl<'le> TElementAttributes for LayoutElement<'le> {
}
}
fn get_unsigned_integer_attribute(&self, attribute: UnsignedIntegerAttribute) -> Option<u32> {
unsafe {
self.element.get_unsigned_integer_attribute_for_layout(attribute)
}
}
#[inline]
fn get_attr<'a>(&'a self, namespace: &Namespace, name: &Atom) -> Option<&'a str> {
unsafe {
@ -885,18 +878,6 @@ impl<'ln> ThreadSafeLayoutNode<'ln> {
}
}
pub fn get_unsigned_integer_attribute(self, attribute: UnsignedIntegerAttribute)
-> Option<u32> {
unsafe {
match self.get_jsmanaged().downcast::<Element>() {
Some(element) => {
element.get_unsigned_integer_attribute_for_layout(attribute)
}
None => panic!("not an element!")
}
}
}
/// Get the description of how to account for recent style changes.
/// This is a simple bitfield and fine to copy by value.
pub fn restyle_damage(self) -> RestyleDamage {
@ -1039,6 +1020,12 @@ impl<'ln> ThreadSafeLayoutNode<'ln> {
iframe_element.pipeline_id().unwrap()
}
}
pub fn get_colspan(&self) -> u32 {
unsafe {
self.get_jsmanaged().downcast::<Element>().unwrap().get_colspan()
}
}
}
pub struct ThreadSafeLayoutNodeChildrenIterator<'a> {

30
components/script/dom/element.rs
View file

@ -75,7 +75,6 @@ use std::default::Default;
use std::mem;
use std::sync::Arc;
use string_cache::{Atom, Namespace, QualName};
use style::legacy::{UnsignedIntegerAttribute, from_declaration};
use style::properties::DeclaredValue;
use style::properties::longhands::{self, background_image, border_spacing, font_family, font_size};
use style::properties::{PropertyDeclaration, PropertyDeclarationBlock, parse_style_attribute};
@ -225,8 +224,7 @@ pub trait LayoutElementHelpers {
unsafe fn synthesize_presentational_hints_for_legacy_attributes<V>(&self, &mut V)
where V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>;
#[allow(unsafe_code)]
unsafe fn get_unsigned_integer_attribute_for_layout(&self, attribute: UnsignedIntegerAttribute)
-> Option<u32>;
unsafe fn get_colspan(self) -> u32;
#[allow(unsafe_code)]
unsafe fn html_element_in_html_document_for_layout(&self) -> bool;
fn id_attribute(&self) -> *const Option<Atom>;
@ -260,6 +258,12 @@ impl LayoutElementHelpers for LayoutJS<Element> {
unsafe fn synthesize_presentational_hints_for_legacy_attributes<V>(&self, hints: &mut V)
where V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>
{
#[inline]
fn from_declaration(rule: PropertyDeclaration)
-> DeclarationBlock<Vec<PropertyDeclaration>> {
DeclarationBlock::from_declarations(Arc::new(vec![rule]))
}
let bgcolor = if let Some(this) = self.downcast::<HTMLBodyElement>() {
this.get_background_color()
} else if let Some(this) = self.downcast::<HTMLTableElement>() {
@ -503,19 +507,13 @@ impl LayoutElementHelpers for LayoutJS<Element> {
}
#[allow(unsafe_code)]
unsafe fn get_unsigned_integer_attribute_for_layout(&self,
attribute: UnsignedIntegerAttribute)
-> Option<u32> {
match attribute {
UnsignedIntegerAttribute::ColSpan => {
if let Some(this) = self.downcast::<HTMLTableCellElement>() {
this.get_colspan()
} else {
// Don't panic since `display` can cause this to be called on arbitrary
// elements.
None
}
}
unsafe fn get_colspan(self) -> u32 {
if let Some(this) = self.downcast::<HTMLTableCellElement>() {
this.get_colspan().unwrap_or(1)
} else {
// Don't panic since `display` can cause this to be called on arbitrary
// elements.
1
}
}

60
components/style/legacy.rs
View file

@ -1,60 +0,0 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! Legacy presentational attributes defined in the HTML5 specification: `<td width>`,
//! `<input size>`, and so forth.
use node::TElementAttributes;
use properties::PropertyDeclaration;
use selector_matching::Stylist;
use selectors::Element;
use selectors::matching::DeclarationBlock;
use smallvec::VecLike;
use std::sync::Arc;
/// Legacy presentational attributes that take a nonnegative integer as defined in HTML5 § 2.4.4.2.
#[derive(Copy, Clone, PartialEq, Eq)]
pub enum UnsignedIntegerAttribute {
/// `<td colspan>`
ColSpan,
}
/// Extension methods for `Stylist` that cause rules to be synthesized for legacy attributes.
pub trait PresentationalHintSynthesis {
/// Synthesizes rules from various HTML attributes (mostly legacy junk from HTML4) that confer
/// *presentational hints* as defined in the HTML5 specification. This handles stuff like
/// `<body bgcolor>`, `<input size>`, `<td width>`, and so forth.
///
/// NB: Beware! If you add an attribute to this list, be sure to add it to
/// `common_style_affecting_attributes` or `rare_style_affecting_attributes` as appropriate. If
/// you don't, you risk strange random nondeterministic failures due to false positives in
/// style sharing.
fn synthesize_presentational_hints_for_legacy_attributes<E, V>(
&self, element: &E, matching_rules_list: &mut V, shareable: &mut bool)
where E: Element + TElementAttributes,
V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>;
}
impl PresentationalHintSynthesis for Stylist {
fn synthesize_presentational_hints_for_legacy_attributes<E, V>(
&self, element: &E, matching_rules_list: &mut V, shareable: &mut bool)
where E: Element + TElementAttributes,
V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>> {
let length = matching_rules_list.len();
element.synthesize_presentational_hints_for_legacy_attributes(matching_rules_list);
if matching_rules_list.len() != length {
// Never share style for elements with preshints
*shareable = false;
}
}
}
/// A convenience function to create a declaration block from a single declaration. This is
/// primarily used in `synthesize_rules_for_legacy_attributes`.
#[inline]
pub fn from_declaration(rule: PropertyDeclaration) -> DeclarationBlock<Vec<PropertyDeclaration>> {
DeclarationBlock::from_declarations(Arc::new(vec![rule]))
}

1
components/style/lib.rs
View file

@ -45,7 +45,6 @@ pub mod animation;
pub mod attr;
mod custom_properties;
pub mod font_face;
pub mod legacy;
pub mod media_queries;
pub mod node;
pub mod parser;

2
components/style/node.rs
View file

@ -5,7 +5,6 @@
//! Traits that nodes must implement. Breaks the otherwise-cyclic dependency between layout and
//! style.
use legacy::UnsignedIntegerAttribute;
use properties::PropertyDeclaration;
use selectors::matching::DeclarationBlock;
use smallvec::VecLike;
@ -14,7 +13,6 @@ use string_cache::{Atom, Namespace};
pub trait TElementAttributes {
fn synthesize_presentational_hints_for_legacy_attributes<V>(&self, &mut V)
where V: VecLike<DeclarationBlock<Vec<PropertyDeclaration>>>;
fn get_unsigned_integer_attribute(&self, attribute: UnsignedIntegerAttribute) -> Option<u32>;
fn get_attr<'a>(&'a self, namespace: &Namespace, attr: &Atom) -> Option<&'a str>;
fn get_attrs<'a>(&'a self, attr: &Atom) -> Vec<&'a str>;

10
components/style/selector_matching.rs
View file

@ -2,7 +2,6 @@
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use legacy::PresentationalHintSynthesis;
use media_queries::{Device, MediaType};
use node::TElementAttributes;
use properties::{PropertyDeclaration, PropertyDeclarationBlock};
@ -277,9 +276,12 @@ impl Stylist {
&mut shareable);
// Step 2: Presentational hints.
self.synthesize_presentational_hints_for_legacy_attributes(element,
applicable_declarations,
&mut shareable);
let length = applicable_declarations.len();
element.synthesize_presentational_hints_for_legacy_attributes(applicable_declarations);
if applicable_declarations.len() != length {
// Never share style for elements with preshints
shareable = false;
}
// Step 3: User and author normal rules.
map.user.normal.get_all_matching_rules(element,