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Auto merge of #14535 - servo:property-id, r=mbrubeck

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Introduce a PropertyId enum and use it instead of strings of property names

<!-- Please describe your changes on the following line: -->

* `LonghandId` and `ShorthandId` are C-like enums
* `Atom` is used for the name of custom properties.
* `PropertyDeclarationId` is the identifier for `PropertyDeclaration`,
  after parsing and shorthand expansion. (Longhand or custom property.)
* `PropertyId` represents any CSS property, e.g. in CSSOM.
  (Longhand, shorthand, or custom.)

CC @upsuper

---
<!-- 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
- [ ] These changes fix #__ (github issue number if applicable).

<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____

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This commit is contained in:
bors-servo 2016-12-10 01:16:26 -08:00 • committed by GitHub
commit 6dd4b4822f
27 changed files with 601 additions and 459 deletions
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6
components/script/dom/bindings/str.rs
View file

@ -286,6 +286,12 @@ impl Into<Vec<u8>> for DOMString {
}
}
impl<'a> Into<Cow<'a, str>> for DOMString {
fn into(self) -> Cow<'a, str> {
self.0.into()
}
}
impl Extend<char> for DOMString {
fn extend<I>(&mut self, iterable: I) where I: IntoIterator<Item=char> {
self.0.extend(iterable)

169
components/script/dom/cssstyledeclaration.rs
View file

@ -12,12 +12,11 @@ use dom::element::Element;
use dom::node::{Node, NodeDamage, window_from_node};
use dom::window::Window;
use parking_lot::RwLock;
use servo_atoms::Atom;
use std::ascii::AsciiExt;
use std::sync::Arc;
use style::parser::ParserContextExtraData;
use style::properties::{Shorthand, Importance, PropertyDeclarationBlock};
use style::properties::{is_supported_property, parse_one_declaration, parse_style_attribute};
use style::properties::{Importance, PropertyDeclarationBlock, PropertyId, LonghandId, ShorthandId};
use style::properties::{parse_one_declaration, parse_style_attribute};
use style::selector_parser::PseudoElement;
use style_traits::ToCss;
@ -37,13 +36,13 @@ pub enum CSSModificationAccess {
}
macro_rules! css_properties(
( $([$getter:ident, $setter:ident, $cssprop:expr]),* ) => (
( $([$getter:ident, $setter:ident, $id:expr],)* ) => (
$(
fn $getter(&self) -> DOMString {
self.GetPropertyValue(DOMString::from($cssprop))
self.get_property_value($id)
}
fn $setter(&self, value: DOMString) -> ErrorResult {
self.SetPropertyValue(DOMString::from($cssprop), value)
self.set_property($id, value, DOMString::new())
}
)*
);
@ -74,41 +73,21 @@ impl CSSStyleDeclaration {
CSSStyleDeclarationBinding::Wrap)
}
fn get_computed_style(&self, property: &Atom) -> Option<DOMString> {
fn get_computed_style(&self, property: PropertyId) -> DOMString {
let node = self.owner.upcast::<Node>();
if !node.is_in_doc() {
// TODO: Node should be matched against the style rules of this window.
// Firefox is currently the only browser to implement this.
return None;
return DOMString::new();
}
let addr = node.to_trusted_node_address();
window_from_node(&*self.owner).resolved_style_query(addr, self.pseudo.clone(), property)
}
}
impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-length
fn Length(&self) -> u32 {
let elem = self.owner.upcast::<Element>();
let len = match *elem.style_attribute().borrow() {
Some(ref lock) => lock.read().declarations.len(),
None => 0,
};
len as u32
}
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-item
fn Item(&self, index: u32) -> DOMString {
self.IndexedGetter(index).unwrap_or_default()
}
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-getpropertyvalue
fn GetPropertyValue(&self, mut property: DOMString) -> DOMString {
fn get_property_value(&self, id: PropertyId) -> DOMString {
if self.readonly {
// Readonly style declarations are used for getComputedStyle.
property.make_ascii_lowercase();
let property = Atom::from(property);
return self.get_computed_style(&property).unwrap_or(DOMString::new());
return self.get_computed_style(id);
}
let style_attribute = self.owner.style_attribute().borrow();
@ -120,44 +99,16 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
};
let mut string = String::new();
style_attribute.property_value_to_css(&property, &mut string).unwrap();
style_attribute.property_value_to_css(&id, &mut string).unwrap();
DOMString::from(string)
}
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-getpropertypriority
fn GetPropertyPriority(&self, property: DOMString) -> DOMString {
let style_attribute = self.owner.style_attribute().borrow();
let style_attribute = if let Some(ref lock) = *style_attribute {
lock.read()
} else {
// No style attribute is like an empty style attribute: no matching declaration.
return DOMString::new()
};
if style_attribute.property_priority(&property).important() {
DOMString::from("important")
} else {
// Step 4
DOMString::new()
}
}
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-setproperty
fn SetProperty(&self,
property: DOMString,
value: DOMString,
priority: DOMString)
-> ErrorResult {
fn set_property(&self, id: PropertyId, value: DOMString, priority: DOMString) -> ErrorResult {
// Step 1
if self.readonly {
return Err(Error::NoModificationAllowed);
}
// Step 3
if !is_supported_property(&property) {
return Ok(());
}
let mut style_attribute = self.owner.style_attribute().borrow_mut();
if value.is_empty() {
@ -171,7 +122,7 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
return Ok(())
};
style_attribute.remove_property(&property);
style_attribute.remove_property(&id);
empty = style_attribute.declarations.is_empty()
}
if empty {
@ -188,7 +139,7 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
// Step 6
let window = window_from_node(&*self.owner);
let declarations =
parse_one_declaration(&property, &value, &window.get_url(), window.css_error_reporter(),
parse_one_declaration(id, &value, &window.get_url(), window.css_error_reporter(),
ParserContextExtraData::default());
// Step 7
@ -228,6 +179,75 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
node.dirty(NodeDamage::NodeStyleDamaged);
Ok(())
}
}
impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-length
fn Length(&self) -> u32 {
let elem = self.owner.upcast::<Element>();
let len = match *elem.style_attribute().borrow() {
Some(ref lock) => lock.read().declarations.len(),
None => 0,
};
len as u32
}
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-item
fn Item(&self, index: u32) -> DOMString {
self.IndexedGetter(index).unwrap_or_default()
}
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-getpropertyvalue
fn GetPropertyValue(&self, property: DOMString) -> DOMString {
let id = if let Ok(id) = PropertyId::parse(property.into()) {
id
} else {
// Unkwown property
return DOMString::new()
};
self.get_property_value(id)
}
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-getpropertypriority
fn GetPropertyPriority(&self, property: DOMString) -> DOMString {
let id = if let Ok(id) = PropertyId::parse(property.into()) {
id
} else {
// Unkwown property
return DOMString::new()
};
let style_attribute = self.owner.style_attribute().borrow();
let style_attribute = if let Some(ref lock) = *style_attribute {
lock.read()
} else {
// No style attribute is like an empty style attribute: no matching declaration.
return DOMString::new()
};
if style_attribute.property_priority(&id).important() {
DOMString::from("important")
} else {
// Step 4
DOMString::new()
}
}
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-setproperty
fn SetProperty(&self,
property: DOMString,
value: DOMString,
priority: DOMString)
-> ErrorResult {
// Step 3
let id = if let Ok(id) = PropertyId::parse(property.into()) {
id
} else {
// Unkwown property
return Ok(())
};
self.set_property(id, value, priority)
}
// https://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-setpropertypriority
fn SetPropertyPriority(&self, property: DOMString, priority: DOMString) -> ErrorResult {
@ -237,9 +257,12 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
}
// Step 2 & 3
if !is_supported_property(&property) {
return Ok(());
}
let id = if let Ok(id) = PropertyId::parse(property.into()) {
id
} else {
// Unkwown property
return Ok(())
};
// Step 4
let importance = match &*priority {
@ -253,10 +276,7 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
let mut style_attribute = lock.write();
// Step 5 & 6
match Shorthand::from_name(&property) {
Some(shorthand) => style_attribute.set_importance(shorthand.longhands(), importance),
None => style_attribute.set_importance(&[&*property], importance),
}
style_attribute.set_importance(&id, importance);
self.owner.set_style_attr(style_attribute.to_css_string());
let node = self.owner.upcast::<Node>();
@ -277,6 +297,13 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
return Err(Error::NoModificationAllowed);
}
let id = if let Ok(id) = PropertyId::parse(property.into()) {
id
} else {
// Unkwown property, cannot be there to remove.
return Ok(DOMString::new())
};
let mut style_attribute = self.owner.style_attribute().borrow_mut();
let mut string = String::new();
let empty;
@ -289,10 +316,10 @@ impl CSSStyleDeclarationMethods for CSSStyleDeclaration {
};
// Step 3
style_attribute.property_value_to_css(&property, &mut string).unwrap();
style_attribute.property_value_to_css(&id, &mut string).unwrap();
// Step 4 & 5
style_attribute.remove_property(&property);
style_attribute.remove_property(&id);
self.owner.set_style_attr(style_attribute.to_css_string());
empty = style_attribute.declarations.is_empty()
}

13
components/script/dom/window.rs
View file

@ -92,6 +92,7 @@ use std::sync::mpsc::TryRecvError::{Disconnected, Empty};
use style::context::ReflowGoal;
use style::error_reporting::ParseErrorReporter;
use style::media_queries;
use style::properties::PropertyId;
use style::properties::longhands::overflow_x;
use style::selector_parser::PseudoElement;
use style::str::HTML_SPACE_CHARACTERS;
@ -1295,16 +1296,16 @@ impl Window {
}
pub fn resolved_style_query(&self,
element: TrustedNodeAddress,
pseudo: Option<PseudoElement>,
property: &Atom) -> Option<DOMString> {
element: TrustedNodeAddress,
pseudo: Option<PseudoElement>,
property: PropertyId) -> DOMString {
if !self.reflow(ReflowGoal::ForScriptQuery,
ReflowQueryType::ResolvedStyleQuery(element, pseudo, property.clone()),
ReflowQueryType::ResolvedStyleQuery(element, pseudo, property),
ReflowReason::Query) {
return None;
return DOMString::new();
}
let ResolvedStyleResponse(resolved) = self.layout_rpc.resolved_style();
resolved.map(DOMString::from)
DOMString::from(resolved)
}
pub fn offset_parent_query(&self, node: TrustedNodeAddress) -> (Option<Root<Element>>, Rect<Au>) {