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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/. */
//! Values for CSS Box Alignment properties
//!
//! https://drafts.csswg.org/css-align/
use std::fmt;
use style_traits::ToCss;
use values::computed::{Context, ToComputedValue};
use values::specified;
pub use super::specified::{AlignItems, AlignJustifyContent, AlignJustifySelf};
/// The computed value for the `justify-items` property.
///
/// Need to carry around both the specified and computed value to handle the
/// special legacy keyword. Sigh.
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub struct JustifyItems {
/// The specified value for the property. Can contain `auto`.
pub specified: specified::JustifyItems,
/// The computed value for the property. Cannot contain `auto`.
pub computed: specified::JustifyItems,
}
impl ToCss for JustifyItems {
fn to_css<W>(&self, dest: &mut W) -> fmt::Result
where W: fmt::Write,
{
self.computed.to_css(dest)
}
}
impl JustifyItems {
/// Returns the `auto` value.
pub fn auto() -> Self {
Self {
specified: specified::JustifyItems::auto(),
computed: specified::JustifyItems::normal(),
}
}
}
impl ToComputedValue for specified::JustifyItems {
type ComputedValue = JustifyItems;
/// <https://drafts.csswg.org/css-align/#valdef-justify-items-legacy>
fn to_computed_value(&self, _context: &Context) -> JustifyItems {
use values::specified::align;
let specified = *self;
let computed =
if self.0 != align::AlignFlags::AUTO {
*self
} else {
// If the inherited value of `justify-items` includes the
// `legacy` keyword, `auto` computes to the inherited value,
// but we assume it computes to `normal`, and handle that
// special-case in StyleAdjuster.
Self::normal()
};
JustifyItems { specified, computed }
}
#[inline]
fn from_computed_value(computed: &JustifyItems) -> Self {
computed.specified
}
}
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