47 lines
1 KiB
Rust
47 lines
1 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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//! Generic types for url properties.
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/// An image url or none, used for example in list-style-image
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#[derive(
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Animate,
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Clone,
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ComputeSquaredDistance,
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Debug,
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MallocSizeOf,
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PartialEq,
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Parse,
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SpecifiedValueInfo,
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ToAnimatedValue,
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ToAnimatedZero,
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ToComputedValue,
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ToCss,
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ToResolvedValue,
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ToShmem,
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)]
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#[repr(C, u8)]
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pub enum GenericUrlOrNone<U> {
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/// `none`
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None,
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/// A URL.
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Url(U),
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}
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pub use self::GenericUrlOrNone as UrlOrNone;
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impl<Url> UrlOrNone<Url> {
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/// Initial "none" value for properties such as `list-style-image`
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pub fn none() -> Self {
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UrlOrNone::None
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}
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/// Returns whether the value is `none`.
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pub fn is_none(&self) -> bool {
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match *self {
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UrlOrNone::None => true,
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UrlOrNone::Url(..) => false,
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}
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}
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}
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