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box.rs
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box.rs
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/* 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 https://mozilla.org/MPL/2.0/. */
//! Specified types for box properties.
use crate::custom_properties::Name as CustomPropertyName;
use crate::parser::{Parse, ParserContext};
use crate::properties::{LonghandId, PropertyDeclarationId, PropertyFlags};
use crate::properties::{PropertyId, ShorthandId};
use crate::values::generics::box_::AnimationIterationCount as GenericAnimationIterationCount;
use crate::values::generics::box_::Perspective as GenericPerspective;
use crate::values::generics::box_::{GenericVerticalAlign, VerticalAlignKeyword};
use crate::values::specified::length::{LengthPercentage, NonNegativeLength};
use crate::values::specified::{AllowQuirks, Number};
use crate::values::{CustomIdent, KeyframesName};
use crate::Atom;
use cssparser::Parser;
use num_traits::FromPrimitive;
use selectors::parser::SelectorParseErrorKind;
use std::fmt::{self, Write};
use style_traits::{CssWriter, KeywordsCollectFn, ParseError};
use style_traits::{SpecifiedValueInfo, StyleParseErrorKind, ToCss};
#[cfg(feature = "gecko")]
fn moz_display_values_enabled(context: &ParserContext) -> bool {
context.in_ua_or_chrome_sheet() ||
static_prefs::pref!("layout.css.xul-display-values.content.enabled")
}
#[cfg(feature = "gecko")]
fn moz_box_display_values_enabled(context: &ParserContext) -> bool {
context.in_ua_or_chrome_sheet() ||
static_prefs::pref!("layout.css.xul-box-display-values.content.enabled")
}
/// Defines an element’s display type, which consists of
/// the two basic qualities of how an element generates boxes
/// <https://drafts.csswg.org/css-display/#propdef-display>
#[allow(missing_docs)]
#[derive(Clone, Copy, Debug, Eq, FromPrimitive, Hash, MallocSizeOf, PartialEq, ToCss, ToShmem)]
#[repr(u8)]
pub enum DisplayOutside {
None = 0,
Inline,
Block,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
TableCaption,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
InternalTable,
#[cfg(feature = "gecko")]
InternalRuby,
#[cfg(feature = "gecko")]
XUL,
}
#[allow(missing_docs)]
#[derive(Clone, Copy, Debug, Eq, FromPrimitive, Hash, MallocSizeOf, PartialEq, ToCss, ToShmem)]
#[repr(u8)]
pub enum DisplayInside {
None = 0,
#[cfg(any(feature = "servo-layout-2020", feature = "gecko"))]
Contents,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
Block,
FlowRoot,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
Inline,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
Flex,
#[cfg(feature = "gecko")]
Grid,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
Table,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
TableRowGroup,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
TableColumn,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
TableColumnGroup,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
TableHeaderGroup,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
TableFooterGroup,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
TableRow,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
TableCell,
#[cfg(feature = "gecko")]
Ruby,
#[cfg(feature = "gecko")]
RubyBase,
#[cfg(feature = "gecko")]
RubyBaseContainer,
#[cfg(feature = "gecko")]
RubyText,
#[cfg(feature = "gecko")]
RubyTextContainer,
#[cfg(feature = "gecko")]
WebkitBox,
#[cfg(feature = "gecko")]
MozBox,
#[cfg(feature = "gecko")]
MozInlineBox,
#[cfg(feature = "gecko")]
MozGrid,
#[cfg(feature = "gecko")]
MozGridGroup,
#[cfg(feature = "gecko")]
MozGridLine,
#[cfg(feature = "gecko")]
MozStack,
#[cfg(feature = "gecko")]
MozDeck,
#[cfg(feature = "gecko")]
MozGroupbox,
#[cfg(feature = "gecko")]
MozPopup,
Flow, // only used for parsing, not computed value
}
#[allow(missing_docs)]
#[derive(
Clone,
Copy,
Debug,
Eq,
FromPrimitive,
Hash,
MallocSizeOf,
PartialEq,
ToComputedValue,
ToResolvedValue,
ToShmem,
)]
#[repr(transparent)]
pub struct Display(u16);
/// Gecko-only impl block for Display (shared stuff later in this file):
#[allow(missing_docs)]
#[allow(non_upper_case_globals)]
impl Display {
// Our u16 bits are used as follows: LOOOOOOOIIIIIIII
const LIST_ITEM_BIT: u16 = 0x8000; //^
const DISPLAY_OUTSIDE_BITS: u16 = 7; // ^^^^^^^
const DISPLAY_INSIDE_BITS: u16 = 8; // ^^^^^^^^
/// https://drafts.csswg.org/css-display/#the-display-properties
pub const None: Self = Self::new(DisplayOutside::None, DisplayInside::None);
#[cfg(any(feature = "servo-layout-2020", feature = "gecko"))]
pub const Contents: Self = Self::new(DisplayOutside::None, DisplayInside::Contents);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const Inline: Self = Self::new(DisplayOutside::Inline, DisplayInside::Inline);
#[cfg(any(feature = "servo-layout-2020"))]
pub const Inline: Self = Self::new(DisplayOutside::Inline, DisplayInside::Flow);
pub const InlineBlock: Self = Self::new(DisplayOutside::Inline, DisplayInside::FlowRoot);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const Block: Self = Self::new(DisplayOutside::Block, DisplayInside::Block);
#[cfg(any(feature = "servo-layout-2020"))]
pub const Block: Self = Self::new(DisplayOutside::Block, DisplayInside::Flow);
#[cfg(feature = "gecko")]
pub const FlowRoot: Self = Self::new(DisplayOutside::Block, DisplayInside::FlowRoot);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const Flex: Self = Self::new(DisplayOutside::Block, DisplayInside::Flex);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const InlineFlex: Self = Self::new(DisplayOutside::Inline, DisplayInside::Flex);
#[cfg(feature = "gecko")]
pub const Grid: Self = Self::new(DisplayOutside::Block, DisplayInside::Grid);
#[cfg(feature = "gecko")]
pub const InlineGrid: Self = Self::new(DisplayOutside::Inline, DisplayInside::Grid);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const Table: Self = Self::new(DisplayOutside::Block, DisplayInside::Table);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const InlineTable: Self = Self::new(DisplayOutside::Inline, DisplayInside::Table);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const TableCaption: Self = Self::new(DisplayOutside::TableCaption, DisplayInside::Block);
#[cfg(feature = "gecko")]
pub const Ruby: Self = Self::new(DisplayOutside::Inline, DisplayInside::Ruby);
#[cfg(feature = "gecko")]
pub const WebkitBox: Self = Self::new(DisplayOutside::Block, DisplayInside::WebkitBox);
#[cfg(feature = "gecko")]
pub const WebkitInlineBox: Self = Self::new(DisplayOutside::Inline, DisplayInside::WebkitBox);
// Internal table boxes.
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const TableRowGroup: Self =
Self::new(DisplayOutside::InternalTable, DisplayInside::TableRowGroup);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const TableHeaderGroup: Self = Self::new(
DisplayOutside::InternalTable,
DisplayInside::TableHeaderGroup,
);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const TableFooterGroup: Self = Self::new(
DisplayOutside::InternalTable,
DisplayInside::TableFooterGroup,
);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const TableColumn: Self =
Self::new(DisplayOutside::InternalTable, DisplayInside::TableColumn);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const TableColumnGroup: Self = Self::new(
DisplayOutside::InternalTable,
DisplayInside::TableColumnGroup,
);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const TableRow: Self = Self::new(DisplayOutside::InternalTable, DisplayInside::TableRow);
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
pub const TableCell: Self = Self::new(DisplayOutside::InternalTable, DisplayInside::TableCell);
/// Internal ruby boxes.
#[cfg(feature = "gecko")]
pub const RubyBase: Self = Self::new(DisplayOutside::InternalRuby, DisplayInside::RubyBase);
#[cfg(feature = "gecko")]
pub const RubyBaseContainer: Self = Self::new(
DisplayOutside::InternalRuby,
DisplayInside::RubyBaseContainer,
);
#[cfg(feature = "gecko")]
pub const RubyText: Self = Self::new(DisplayOutside::InternalRuby, DisplayInside::RubyText);
#[cfg(feature = "gecko")]
pub const RubyTextContainer: Self = Self::new(
DisplayOutside::InternalRuby,
DisplayInside::RubyTextContainer,
);
/// XUL boxes.
#[cfg(feature = "gecko")]
pub const MozBox: Self = Self::new(DisplayOutside::XUL, DisplayInside::MozBox);
#[cfg(feature = "gecko")]
pub const MozInlineBox: Self = Self::new(DisplayOutside::XUL, DisplayInside::MozInlineBox);
#[cfg(feature = "gecko")]
pub const MozGrid: Self = Self::new(DisplayOutside::XUL, DisplayInside::MozGrid);
#[cfg(feature = "gecko")]
pub const MozGridGroup: Self = Self::new(DisplayOutside::XUL, DisplayInside::MozGridGroup);
#[cfg(feature = "gecko")]
pub const MozGridLine: Self = Self::new(DisplayOutside::XUL, DisplayInside::MozGridLine);
#[cfg(feature = "gecko")]
pub const MozStack: Self = Self::new(DisplayOutside::XUL, DisplayInside::MozStack);
#[cfg(feature = "gecko")]
pub const MozDeck: Self = Self::new(DisplayOutside::XUL, DisplayInside::MozDeck);
#[cfg(feature = "gecko")]
pub const MozGroupbox: Self = Self::new(DisplayOutside::XUL, DisplayInside::MozGroupbox);
#[cfg(feature = "gecko")]
pub const MozPopup: Self = Self::new(DisplayOutside::XUL, DisplayInside::MozPopup);
/// Make a raw display value from <display-outside> and <display-inside> values.
#[inline]
const fn new(outside: DisplayOutside, inside: DisplayInside) -> Self {
let o: u16 = ((outside as u8) as u16) << Self::DISPLAY_INSIDE_BITS;
let i: u16 = (inside as u8) as u16;
Self(o | i)
}
/// Make a display enum value from <display-outside> and <display-inside> values.
/// We store `flow` as a synthetic `block` or `inline` inside-value to simplify
/// our layout code.
#[inline]
fn from3(outside: DisplayOutside, inside: DisplayInside, list_item: bool) -> Self {
let inside = match inside {
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
DisplayInside::Flow => match outside {
DisplayOutside::Inline => DisplayInside::Inline,
_ => DisplayInside::Block,
},
_ => inside,
};
let v = Self::new(outside, inside);
if !list_item {
return v;
}
Self(v.0 | Self::LIST_ITEM_BIT)
}
/// Accessor for the <display-inside> value.
#[inline]
pub fn inside(&self) -> DisplayInside {
DisplayInside::from_u16(self.0 & ((1 << Self::DISPLAY_INSIDE_BITS) - 1)).unwrap()
}
/// Accessor for the <display-outside> value.
#[inline]
pub fn outside(&self) -> DisplayOutside {
DisplayOutside::from_u16(
(self.0 >> Self::DISPLAY_INSIDE_BITS) & ((1 << Self::DISPLAY_OUTSIDE_BITS) - 1),
)
.unwrap()
}
/// Returns whether this `display` value is some kind of list-item.
#[inline]
pub const fn is_list_item(&self) -> bool {
(self.0 & Self::LIST_ITEM_BIT) != 0
}
/// Returns whether this `display` value is a ruby level container.
pub fn is_ruby_level_container(&self) -> bool {
match *self {
#[cfg(feature = "gecko")]
Display::RubyBaseContainer | Display::RubyTextContainer => true,
_ => false,
}
}
/// Returns whether this `display` value is one of the types for ruby.
pub fn is_ruby_type(&self) -> bool {
match self.inside() {
#[cfg(feature = "gecko")]
DisplayInside::Ruby |
DisplayInside::RubyBase |
DisplayInside::RubyText |
DisplayInside::RubyBaseContainer |
DisplayInside::RubyTextContainer => true,
_ => false,
}
}
}
/// Shared Display impl for both Gecko and Servo.
#[allow(non_upper_case_globals)]
impl Display {
/// The initial display value.
#[inline]
pub fn inline() -> Self {
Display::Inline
}
/// <https://drafts.csswg.org/css2/visuren.html#x13>
#[cfg(feature = "servo")]
#[inline]
pub fn is_atomic_inline_level(&self) -> bool {
match *self {
Display::InlineBlock => true,
#[cfg(any(feature = "servo-layout-2013"))]
Display::InlineFlex | Display::InlineTable => true,
_ => false,
}
}
/// Returns whether this `display` value is the display of a flex or
/// grid container.
///
/// This is used to implement various style fixups.
pub fn is_item_container(&self) -> bool {
match self.inside() {
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
DisplayInside::Flex => true,
#[cfg(feature = "gecko")]
DisplayInside::Grid => true,
_ => false,
}
}
/// Returns whether an element with this display type is a line
/// participant, which means it may lay its children on the same
/// line as itself.
pub fn is_line_participant(&self) -> bool {
match *self {
Display::Inline => true,
#[cfg(feature = "gecko")]
Display::Contents | Display::Ruby | Display::RubyBaseContainer => true,
_ => false,
}
}
/// Convert this display into an equivalent block display.
///
/// Also used for :root style adjustments.
pub fn equivalent_block_display(&self, _is_root_element: bool) -> Self {
#[cfg(feature = "gecko")]
{
// Special handling for `contents` and `list-item`s on the root element.
if _is_root_element && (self.is_contents() || self.is_list_item()) {
return Display::Block;
}
}
match self.outside() {
DisplayOutside::Inline => {
let inside = match self.inside() {
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
DisplayInside::Inline | DisplayInside::FlowRoot => DisplayInside::Block,
#[cfg(feature = "servo-layout-2020")]
DisplayInside::FlowRoot => DisplayInside::Flow,
inside => inside,
};
Display::from3(DisplayOutside::Block, inside, self.is_list_item())
},
// If this pref is true, then we'll blockify "-moz-inline-box" to
// "-moz-box", and blockify "-moz-box" to itself. Otherwise, we
// blockify both to "block".
#[cfg(feature = "gecko")]
DisplayOutside::XUL => {
if static_prefs::pref!("layout.css.xul-box-display-values.survive-blockification.enabled") {
match self.inside() {
DisplayInside::MozInlineBox | DisplayInside::MozBox => Display::MozBox,
_ => Display::Block,
}
} else {
Display::Block
}
},
DisplayOutside::Block | DisplayOutside::None => *self,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
_ => Display::Block,
}
}
/// Convert this display into an equivalent inline-outside display.
/// https://drafts.csswg.org/css-display/#inlinify
#[cfg(feature = "gecko")]
pub fn inlinify(&self) -> Self {
match self.outside() {
DisplayOutside::Block => {
let inside = match self.inside() {
DisplayInside::Block => DisplayInside::FlowRoot,
inside => inside,
};
Display::from3(DisplayOutside::Inline, inside, self.is_list_item())
},
#[cfg(feature = "gecko")]
DisplayOutside::XUL => match self.inside() {
DisplayInside::MozBox => Display::MozInlineBox,
_ => *self,
},
_ => *self,
}
}
/// Returns true if the value is `Contents`
#[inline]
pub fn is_contents(&self) -> bool {
match *self {
#[cfg(feature = "gecko")]
Display::Contents => true,
_ => false,
}
}
/// Returns true if the value is `None`
#[inline]
pub fn is_none(&self) -> bool {
*self == Display::None
}
}
impl ToCss for Display {
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
where
W: fmt::Write,
{
debug_assert_ne!(
self.inside(),
DisplayInside::Flow,
"`flow` never appears in `display` computed value"
);
let outside = self.outside();
let inside = match self.inside() {
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
DisplayInside::Block | DisplayInside::Inline => DisplayInside::Flow,
inside => inside,
};
match *self {
Display::Block | Display::Inline => outside.to_css(dest),
Display::InlineBlock => dest.write_str("inline-block"),
#[cfg(feature = "gecko")]
Display::WebkitInlineBox => dest.write_str("-webkit-inline-box"),
#[cfg(feature = "gecko")]
Display::MozInlineBox => dest.write_str("-moz-inline-box"),
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
Display::TableCaption => dest.write_str("table-caption"),
_ => match (outside, inside) {
#[cfg(feature = "gecko")]
(DisplayOutside::Inline, DisplayInside::Grid) => dest.write_str("inline-grid"),
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
(DisplayOutside::Inline, DisplayInside::Flex) |
(DisplayOutside::Inline, DisplayInside::Table) => {
dest.write_str("inline-")?;
inside.to_css(dest)
},
#[cfg(feature = "gecko")]
(DisplayOutside::Block, DisplayInside::Ruby) => dest.write_str("block ruby"),
(_, inside) => {
if self.is_list_item() {
if outside != DisplayOutside::Block {
outside.to_css(dest)?;
dest.write_str(" ")?;
}
if inside != DisplayInside::Flow {
inside.to_css(dest)?;
dest.write_str(" ")?;
}
dest.write_str("list-item")
} else {
inside.to_css(dest)
}
},
},
}
}
}
/// <display-inside> = flow | flow-root | table | flex | grid | ruby
/// https://drafts.csswg.org/css-display/#typedef-display-inside
fn parse_display_inside<'i, 't>(
input: &mut Parser<'i, 't>,
) -> Result<DisplayInside, ParseError<'i>> {
Ok(try_match_ident_ignore_ascii_case! { input,
"flow" => DisplayInside::Flow,
#[cfg(any(feature = "servo-layout-2020", feature = "gecko"))]
"flow-root" => DisplayInside::FlowRoot,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"table" => DisplayInside::Table,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"flex" => DisplayInside::Flex,
#[cfg(feature = "gecko")]
"grid" => DisplayInside::Grid,
#[cfg(feature = "gecko")]
"ruby" => DisplayInside::Ruby,
})
}
/// <display-outside> = block | inline | run-in
/// https://drafts.csswg.org/css-display/#typedef-display-outside
fn parse_display_outside<'i, 't>(
input: &mut Parser<'i, 't>,
) -> Result<DisplayOutside, ParseError<'i>> {
Ok(try_match_ident_ignore_ascii_case! { input,
"block" => DisplayOutside::Block,
"inline" => DisplayOutside::Inline,
// FIXME(bug 2056): not supported in layout yet:
//"run-in" => DisplayOutside::RunIn,
})
}
/// (flow | flow-root)?
fn parse_display_inside_for_list_item<'i, 't>(
input: &mut Parser<'i, 't>,
) -> Result<DisplayInside, ParseError<'i>> {
Ok(try_match_ident_ignore_ascii_case! { input,
"flow" => DisplayInside::Flow,
#[cfg(feature = "gecko")]
"flow-root" => DisplayInside::FlowRoot,
})
}
/// Test a <display-inside> Result for same values as above.
fn is_valid_inside_for_list_item<'i>(inside: &Result<DisplayInside, ParseError<'i>>) -> bool {
match inside {
Ok(DisplayInside::Flow) => true,
#[cfg(feature = "gecko")]
Ok(DisplayInside::FlowRoot) => true,
_ => false,
}
}
/// Parse `list-item`.
fn parse_list_item<'i, 't>(input: &mut Parser<'i, 't>) -> Result<(), ParseError<'i>> {
Ok(try_match_ident_ignore_ascii_case! { input,
"list-item" => (),
})
}
impl Parse for Display {
#[allow(unused)] // `context` isn't used for servo-2020 for now
fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Display, ParseError<'i>> {
// Parse all combinations of <display-inside/outside>? and `list-item`? first.
let mut got_list_item = input.try(parse_list_item).is_ok();
let mut inside = if got_list_item {
input.try(parse_display_inside_for_list_item)
} else {
input.try(parse_display_inside)
};
// <display-listitem> = <display-outside>? && [ flow | flow-root ]? && list-item
// https://drafts.csswg.org/css-display/#typedef-display-listitem
if !got_list_item && is_valid_inside_for_list_item(&inside) {
got_list_item = input.try(parse_list_item).is_ok();
}
let outside = input.try(parse_display_outside);
if outside.is_ok() {
if !got_list_item && (inside.is_err() || is_valid_inside_for_list_item(&inside)) {
got_list_item = input.try(parse_list_item).is_ok();
}
if inside.is_err() {
inside = if got_list_item {
input.try(parse_display_inside_for_list_item)
} else {
input.try(parse_display_inside)
};
if !got_list_item && is_valid_inside_for_list_item(&inside) {
got_list_item = input.try(parse_list_item).is_ok();
}
}
}
if got_list_item || inside.is_ok() || outside.is_ok() {
let inside = inside.unwrap_or(DisplayInside::Flow);
let outside = outside.unwrap_or(match inside {
// "If <display-outside> is omitted, the element’s outside display type
// defaults to block — except for ruby, which defaults to inline."
// https://drafts.csswg.org/css-display/#inside-model
#[cfg(feature = "gecko")]
DisplayInside::Ruby => DisplayOutside::Inline,
_ => DisplayOutside::Block,
});
return Ok(Display::from3(outside, inside, got_list_item));
}
// Now parse the single-keyword `display` values.
Ok(try_match_ident_ignore_ascii_case! { input,
"none" => Display::None,
#[cfg(feature = "gecko")]
"contents" => Display::Contents,
"inline-block" => Display::InlineBlock,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"inline-table" => Display::InlineTable,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"-webkit-flex" => Display::Flex,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"inline-flex" | "-webkit-inline-flex" => Display::InlineFlex,
#[cfg(feature = "gecko")]
"inline-grid" => Display::InlineGrid,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"table-caption" => Display::TableCaption,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"table-row-group" => Display::TableRowGroup,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"table-header-group" => Display::TableHeaderGroup,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"table-footer-group" => Display::TableFooterGroup,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"table-column" => Display::TableColumn,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"table-column-group" => Display::TableColumnGroup,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"table-row" => Display::TableRow,
#[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
"table-cell" => Display::TableCell,
#[cfg(feature = "gecko")]
"ruby-base" => Display::RubyBase,
#[cfg(feature = "gecko")]
"ruby-base-container" => Display::RubyBaseContainer,
#[cfg(feature = "gecko")]
"ruby-text" => Display::RubyText,
#[cfg(feature = "gecko")]
"ruby-text-container" => Display::RubyTextContainer,
#[cfg(feature = "gecko")]
"-webkit-box" => Display::WebkitBox,
#[cfg(feature = "gecko")]
"-webkit-inline-box" => Display::WebkitInlineBox,
#[cfg(feature = "gecko")]
"-moz-box" if moz_box_display_values_enabled(context) => Display::MozBox,
#[cfg(feature = "gecko")]
"-moz-inline-box" if moz_box_display_values_enabled(context) => Display::MozInlineBox,
#[cfg(feature = "gecko")]
"-moz-grid" if moz_display_values_enabled(context) => Display::MozGrid,
#[cfg(feature = "gecko")]
"-moz-grid-group" if moz_display_values_enabled(context) => Display::MozGridGroup,
#[cfg(feature = "gecko")]
"-moz-grid-line" if moz_display_values_enabled(context) => Display::MozGridLine,
#[cfg(feature = "gecko")]
"-moz-stack" if moz_display_values_enabled(context) => Display::MozStack,
#[cfg(feature = "gecko")]
"-moz-deck" if moz_display_values_enabled(context) => Display::MozDeck,
#[cfg(feature = "gecko")]
"-moz-groupbox" if moz_display_values_enabled(context) => Display::MozGroupbox,
#[cfg(feature = "gecko")]
"-moz-popup" if moz_display_values_enabled(context) => Display::MozPopup,
})
}
}
impl SpecifiedValueInfo for Display {
fn collect_completion_keywords(f: KeywordsCollectFn) {
f(&[
"block",
"contents",
"flex",
"flow-root",
"flow-root list-item",
"grid",
"inline",
"inline-block",
"inline-flex",
"inline-grid",
"inline-table",
"inline list-item",
"inline flow-root list-item",
"list-item",
"none",
"block ruby",
"ruby",
"ruby-base",
"ruby-base-container",
"ruby-text",
"ruby-text-container",
"table",
"table-caption",
"table-cell",
"table-column",
"table-column-group",
"table-footer-group",
"table-header-group",
"table-row",
"table-row-group",
"-webkit-box",
"-webkit-inline-box",
]);
}
}
/// A specified value for the `vertical-align` property.
pub type VerticalAlign = GenericVerticalAlign<LengthPercentage>;
impl Parse for VerticalAlign {
fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
if let Ok(lp) = input.try(|i| LengthPercentage::parse_quirky(context, i, AllowQuirks::Yes))
{
return Ok(GenericVerticalAlign::Length(lp));
}
Ok(GenericVerticalAlign::Keyword(VerticalAlignKeyword::parse(
input,
)?))
}
}
/// https://drafts.csswg.org/css-animations/#animation-iteration-count
pub type AnimationIterationCount = GenericAnimationIterationCount<Number>;
impl Parse for AnimationIterationCount {
fn parse<'i, 't>(
context: &ParserContext,
input: &mut ::cssparser::Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
if input
.try(|input| input.expect_ident_matching("infinite"))
.is_ok()
{
return Ok(GenericAnimationIterationCount::Infinite);
}
let number = Number::parse_non_negative(context, input)?;
Ok(GenericAnimationIterationCount::Number(number))
}
}
impl AnimationIterationCount {
/// Returns the value `1.0`.
#[inline]
pub fn one() -> Self {
GenericAnimationIterationCount::Number(Number::new(1.0))
}
}
/// A value for the `animation-name` property.
#[derive(
Clone,
Debug,
Eq,
Hash,
MallocSizeOf,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToResolvedValue,
ToShmem,
)]
#[value_info(other_values = "none")]
pub struct AnimationName(pub Option<KeyframesName>);
impl AnimationName {
/// Get the name of the animation as an `Atom`.
pub fn as_atom(&self) -> Option<&Atom> {
self.0.as_ref().map(|n| n.as_atom())
}
/// Returns the `none` value.
pub fn none() -> Self {
AnimationName(None)
}
}
impl ToCss for AnimationName {
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
where
W: Write,
{
match self.0 {
Some(ref name) => name.to_css(dest),
None => dest.write_str("none"),
}
}
}
impl Parse for AnimationName {
fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
if let Ok(name) = input.try(|input| KeyframesName::parse(context, input)) {
return Ok(AnimationName(Some(name)));
}
input.expect_ident_matching("none")?;
Ok(AnimationName(None))
}
}
/// https://drafts.csswg.org/css-scroll-snap-1/#snap-axis
#[allow(missing_docs)]
#[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
#[derive(
Clone,
Copy,
Debug,
Eq,
MallocSizeOf,
Parse,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToCss,
ToResolvedValue,
ToShmem,
)]
#[repr(u8)]
pub enum ScrollSnapAxis {
X,
Y,
Block,
Inline,
Both,
}
/// https://drafts.csswg.org/css-scroll-snap-1/#snap-strictness
#[allow(missing_docs)]
#[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
#[derive(
Clone,
Copy,
Debug,
Eq,
MallocSizeOf,
Parse,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToCss,
ToResolvedValue,
ToShmem,
)]
#[repr(u8)]
pub enum ScrollSnapStrictness {
#[css(skip)]
None, // Used to represent scroll-snap-type: none. It's not parsed.
Mandatory,
Proximity,
}
/// https://drafts.csswg.org/css-scroll-snap-1/#scroll-snap-type
#[allow(missing_docs)]
#[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
#[derive(
Clone,
Copy,
Debug,
Eq,
MallocSizeOf,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToResolvedValue,
ToShmem,
)]
#[repr(C)]
pub struct ScrollSnapType {
axis: ScrollSnapAxis,
strictness: ScrollSnapStrictness,
}
impl ScrollSnapType {
/// Returns `none`.
#[inline]
pub fn none() -> Self {
Self {
axis: ScrollSnapAxis::Both,
strictness: ScrollSnapStrictness::None,
}
}
}
impl Parse for ScrollSnapType {
/// none | [ x | y | block | inline | both ] [ mandatory | proximity ]?
fn parse<'i, 't>(
_context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
if input
.try(|input| input.expect_ident_matching("none"))
.is_ok()
{
return Ok(ScrollSnapType::none());
}
let axis = ScrollSnapAxis::parse(input)?;
let strictness = input
.try(ScrollSnapStrictness::parse)
.unwrap_or(ScrollSnapStrictness::Proximity);
Ok(Self { axis, strictness })
}
}
impl ToCss for ScrollSnapType {
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
where
W: Write,
{
if self.strictness == ScrollSnapStrictness::None {
return dest.write_str("none");
}
self.axis.to_css(dest)?;
if self.strictness != ScrollSnapStrictness::Proximity {
dest.write_str(" ")?;
self.strictness.to_css(dest)?;
}
Ok(())
}
}
/// Specified value of scroll-snap-align keyword value.
#[allow(missing_docs)]
#[derive(
Clone,
Copy,
Debug,
Eq,
FromPrimitive,
Hash,
MallocSizeOf,
Parse,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToCss,
ToResolvedValue,
ToShmem,
)]
#[repr(u8)]
pub enum ScrollSnapAlignKeyword {
None,
Start,
End,
Center,
}
/// https://drafts.csswg.org/css-scroll-snap-1/#scroll-snap-align
#[allow(missing_docs)]
#[derive(
Clone,
Copy,
Debug,
Eq,
MallocSizeOf,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToResolvedValue,
ToShmem,
)]
#[repr(C)]
pub struct ScrollSnapAlign {
block: ScrollSnapAlignKeyword,
inline: ScrollSnapAlignKeyword,
}
impl ScrollSnapAlign {
/// Returns `none`.
#[inline]
pub fn none() -> Self {
ScrollSnapAlign {
block: ScrollSnapAlignKeyword::None,
inline: ScrollSnapAlignKeyword::None,
}
}
}
impl Parse for ScrollSnapAlign {
/// [ none | start | end | center ]{1,2}