servo/components/style/values/generics/column.rs
Anthony Ramine 0a3f30fb12 Return an error when animating column-count: auto
This changes the behaviour of animations of `column-count`
(hello Captain Obvious) but this is a bugfix.
2018-02-22 10:23:58 +01:00

30 lines
885 B
Rust

/* 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 for the column properties.
/// A generic type for `column-count` values.
#[derive(Animate, Clone, ComputeSquaredDistance, Copy, Debug, MallocSizeOf)]
#[derive(PartialEq, ToAnimatedValue, ToAnimatedZero, ToComputedValue, ToCss)]
pub enum ColumnCount<PositiveInteger> {
/// A positive integer.
Integer(PositiveInteger),
/// The keyword `auto`.
#[animation(error)]
Auto,
}
impl<I> ColumnCount<I> {
/// Returns `auto`.
#[inline]
pub fn auto() -> Self {
ColumnCount::Auto
}
/// Returns whether this value is `auto`.
#[inline]
pub fn is_auto(self) -> bool {
matches!(self, ColumnCount::Auto)
}
}