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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/. */
//! Generic types for url properties.
/// An image url or none, used for example in list-style-image
#[derive(
Animate,
Clone,
ComputeSquaredDistance,
Debug,
MallocSizeOf,
PartialEq,
Parse,
SpecifiedValueInfo,
ToAnimatedValue,
ToAnimatedZero,
ToComputedValue,
ToCss,
ToResolvedValue,
ToShmem,
)]
#[repr(C, u8)]
pub enum GenericUrlOrNone<U> {
/// `none`
None,
/// A URL.
Url(U),
}
pub use self::GenericUrlOrNone as UrlOrNone;
impl<Url> UrlOrNone<Url> {
/// Initial "none" value for properties such as `list-style-image`
pub fn none() -> Self {
UrlOrNone::None
}
/// Returns whether the value is `none`.
pub fn is_none(&self) -> bool {
match *self {
UrlOrNone::None => true,
UrlOrNone::Url(..) => false,
}
}
}
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