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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 http://mozilla.org/MPL/2.0/. */
//! Generic types that share their serialization implementations
//! for both specified and computed values.
use counter_style::{parse_counter_style_name, Symbols};
use cssparser::Parser;
use parser::{Parse, ParserContext};
use style_traits::{KeywordsCollectFn, ParseError};
use style_traits::{SpecifiedValueInfo, StyleParseErrorKind};
use super::CustomIdent;
pub mod background;
pub mod basic_shape;
pub mod border;
#[path = "box.rs"]
pub mod box_;
pub mod column;
pub mod counters;
pub mod effects;
pub mod flex;
pub mod font;
#[cfg(feature = "gecko")]
pub mod gecko;
pub mod grid;
pub mod image;
pub mod pointing;
pub mod position;
pub mod rect;
pub mod size;
pub mod svg;
pub mod text;
pub mod transform;
pub mod url;
// https://drafts.csswg.org/css-counter-styles/#typedef-symbols-type
#[allow(missing_docs)]
#[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
#[derive(Clone, Copy, Debug, Eq, MallocSizeOf, Parse, PartialEq, ToComputedValue, ToCss)]
pub enum SymbolsType {
Cyclic,
Numeric,
Alphabetic,
Symbolic,
Fixed,
}
#[cfg(feature = "gecko")]
impl SymbolsType {
/// Convert symbols type to their corresponding Gecko values.
pub fn to_gecko_keyword(self) -> u8 {
use gecko_bindings::structs;
match self {
SymbolsType::Cyclic => structs::NS_STYLE_COUNTER_SYSTEM_CYCLIC as u8,
SymbolsType::Numeric => structs::NS_STYLE_COUNTER_SYSTEM_NUMERIC as u8,
SymbolsType::Alphabetic => structs::NS_STYLE_COUNTER_SYSTEM_ALPHABETIC as u8,
SymbolsType::Symbolic => structs::NS_STYLE_COUNTER_SYSTEM_SYMBOLIC as u8,
SymbolsType::Fixed => structs::NS_STYLE_COUNTER_SYSTEM_FIXED as u8,
}
}
/// Convert Gecko value to symbol type.
pub fn from_gecko_keyword(gecko_value: u32) -> SymbolsType {
use gecko_bindings::structs;
match gecko_value {
structs::NS_STYLE_COUNTER_SYSTEM_CYCLIC => SymbolsType::Cyclic,
structs::NS_STYLE_COUNTER_SYSTEM_NUMERIC => SymbolsType::Numeric,
structs::NS_STYLE_COUNTER_SYSTEM_ALPHABETIC => SymbolsType::Alphabetic,
structs::NS_STYLE_COUNTER_SYSTEM_SYMBOLIC => SymbolsType::Symbolic,
structs::NS_STYLE_COUNTER_SYSTEM_FIXED => SymbolsType::Fixed,
x => panic!("Unexpected value for symbol type {}", x),
}
}
}
/// <https://drafts.csswg.org/css-counter-styles/#typedef-counter-style>
///
/// Since wherever <counter-style> is used, 'none' is a valid value as
/// well, we combine them into one type to make code simpler.
#[cfg_attr(feature = "gecko", derive(MallocSizeOf))]
#[derive(Clone, Debug, Eq, PartialEq, ToComputedValue, ToCss)]
pub enum CounterStyleOrNone {
/// `none`
None,
/// `<counter-style-name>`
Name(CustomIdent),
/// `symbols()`
#[css(function)]
Symbols(SymbolsType, Symbols),
}
impl CounterStyleOrNone {
/// disc value
pub fn disc() -> Self {
CounterStyleOrNone::Name(CustomIdent(atom!("disc")))
}
/// decimal value
pub fn decimal() -> Self {
CounterStyleOrNone::Name(CustomIdent(atom!("decimal")))
}
}
impl Parse for CounterStyleOrNone {
fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
if let Ok(name) = input.try(|i| parse_counter_style_name(i)) {
return Ok(CounterStyleOrNone::Name(name));
}
if input.try(|i| i.expect_ident_matching("none")).is_ok() {
return Ok(CounterStyleOrNone::None);
}
if input.try(|i| i.expect_function_matching("symbols")).is_ok() {
return input.parse_nested_block(|input| {
let symbols_type = input
.try(|i| SymbolsType::parse(i))
.unwrap_or(SymbolsType::Symbolic);
let symbols = Symbols::parse(context, input)?;
// There must be at least two symbols for alphabetic or
// numeric system.
if (symbols_type == SymbolsType::Alphabetic ||
symbols_type == SymbolsType::Numeric) && symbols.0.len() < 2
{
return Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError));
}
// Identifier is not allowed in symbols() function.
if symbols.0.iter().any(|sym| !sym.is_allowed_in_symbols()) {
return Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError));
}
Ok(CounterStyleOrNone::Symbols(symbols_type, symbols))
});
}
Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError))
}
}
impl SpecifiedValueInfo for CounterStyleOrNone {
fn collect_completion_keywords(f: KeywordsCollectFn) {
// XXX The best approach for implementing this is probably
// having a CounterStyleName type wrapping CustomIdent, and
// put the predefined list for that type in counter_style mod.
// But that's a non-trivial change itself, so we use a simpler
// approach here.
macro_rules! predefined {
($($name:expr,)+) => {
f(&["none", "symbols", $($name,)+]);
}
}
include!("../../counter_style/predefined.rs");
}
}
/// A wrapper of Non-negative values.
#[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
#[derive(Animate, Clone, ComputeSquaredDistance, Copy, Debug, Hash, MallocSizeOf,
PartialEq, PartialOrd, SpecifiedValueInfo, ToAnimatedZero,
ToComputedValue, ToCss)]
pub struct NonNegative<T>(pub T);
/// A wrapper of greater-than-or-equal-to-one values.
#[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
#[derive(Animate, Clone, ComputeSquaredDistance, Copy, Debug, MallocSizeOf,
PartialEq, PartialOrd, SpecifiedValueInfo, ToAnimatedZero,
ToComputedValue, ToCss)]
pub struct GreaterThanOrEqualToOne<T>(pub T);
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