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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 UI properties.
use crate::parser::{Parse, ParserContext};
use crate::values::generics::ui as generics;
use crate::values::specified::color::Color;
use crate::values::specified::url::SpecifiedImageUrl;
use crate::values::specified::Number;
use crate::values::{Auto, Either};
use cssparser::Parser;
use std::fmt::{self, Write};
use style_traits::cursor::CursorKind;
use style_traits::{CssWriter, ParseError, StyleParseErrorKind, ToCss};
/// auto | <color>
pub type ColorOrAuto = Either<Color, Auto>;
/// A specified value for the `cursor` property.
pub type Cursor = generics::Cursor<CursorImage>;
/// A specified value for item of `image cursors`.
pub type CursorImage = generics::CursorImage<SpecifiedImageUrl, Number>;
impl Parse for Cursor {
/// cursor: [<url> [<number> <number>]?]# [auto | default | ...]
fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
let mut images = vec![];
loop {
match input.try(|input| CursorImage::parse(context, input)) {
Ok(image) => images.push(image),
Err(_) => break,
}
input.expect_comma()?;
}
Ok(Self {
images: images.into_boxed_slice(),
keyword: CursorKind::parse(context, input)?,
})
}
}
impl Parse for CursorKind {
fn parse<'i, 't>(
_context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
let location = input.current_source_location();
let ident = input.expect_ident()?;
CursorKind::from_css_keyword(&ident)
.map_err(|_| location.new_custom_error(StyleParseErrorKind::UnspecifiedError))
}
}
impl Parse for CursorImage {
fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
Ok(Self {
url: SpecifiedImageUrl::parse(context, input)?,
hotspot: match input.try(|input| Number::parse(context, input)) {
Ok(number) => Some((number, Number::parse(context, input)?)),
Err(_) => None,
},
})
}
}
/// Specified value of `-moz-force-broken-image-icon`
#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToComputedValue)]
pub struct MozForceBrokenImageIcon(pub bool);
impl MozForceBrokenImageIcon {
/// Return initial value of -moz-force-broken-image-icon which is false.
#[inline]
pub fn false_value() -> MozForceBrokenImageIcon {
MozForceBrokenImageIcon(false)
}
}
impl Parse for MozForceBrokenImageIcon {
fn parse<'i, 't>(
_context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<MozForceBrokenImageIcon, ParseError<'i>> {
// We intentionally don't support calc values here.
match input.expect_integer()? {
0 => Ok(MozForceBrokenImageIcon(false)),
1 => Ok(MozForceBrokenImageIcon(true)),
_ => Err(input.new_custom_error(StyleParseErrorKind::UnspecifiedError)),
}
}
}
impl ToCss for MozForceBrokenImageIcon {
fn to_css<W>(&self, dest: &mut CssWriter<W>) -> fmt::Result
where
W: Write,
{
dest.write_str(if self.0 { "1" } else { "0" })
}
}
impl From<u8> for MozForceBrokenImageIcon {
fn from(bits: u8) -> MozForceBrokenImageIcon {
MozForceBrokenImageIcon(bits == 1)
}
}
impl From<MozForceBrokenImageIcon> for u8 {
fn from(v: MozForceBrokenImageIcon) -> u8 {
if v.0 {
1
} else {
0
}
}
}
/// A specified value for `scrollbar-color` property
pub type ScrollbarColor = generics::ScrollbarColor<Color>;
impl Parse for ScrollbarColor {
fn parse<'i, 't>(
context: &ParserContext,
input: &mut Parser<'i, 't>,
) -> Result<Self, ParseError<'i>> {
if input.try(|i| i.expect_ident_matching("auto")).is_ok() {
return Ok(generics::ScrollbarColor::Auto);
}
Ok(generics::ScrollbarColor::Colors {
thumb: Color::parse(context, input)?,
track: Color::parse(context, input)?,
})
}
}
fn in_ua_sheet(context: &ParserContext) -> bool {
use crate::stylesheets::Origin;
context.stylesheet_origin == Origin::UserAgent
}
/// The specified value for the `user-select` property.
///
/// https://drafts.csswg.org/css-ui-4/#propdef-user-select
#[allow(missing_docs)]
#[derive(
Clone,
Copy,
Debug,
Eq,
MallocSizeOf,
Parse,
PartialEq,
SpecifiedValueInfo,
ToComputedValue,
ToCss,
)]
#[repr(u8)]
pub enum UserSelect {
Auto,
Text,
#[parse(aliases = "-moz-none")]
None,
/// Force selection of all children, unless an ancestor has `none` set.
All,
/// Like `text`, except that it won't get overridden by ancestors having
/// `all`.
///
/// FIXME(emilio): This only has one use in contenteditable.css, can we find
/// a better way to do this?
///
/// See bug 1181130.
#[parse(condition = "in_ua_sheet")]
MozText,
}
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