ac789b2379
https://github.com/huacnlee/gpui-component/assets/5518/8603cbcc-c416-4d10-84a0-8cfe2e021e1a
47 lines
1.3 KiB
Rust
47 lines
1.3 KiB
Rust
use std::fmt::Display;
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/// A trait for elements that can be selected.
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///
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/// Generally used to enable "toggle" or "active" behavior and styles on an element through the [`Selection`] status.
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pub trait Selectable {
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/// Sets whether the element is selected.
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fn selected(self, selected: bool) -> Self;
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}
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/// Represents the selection status of an element.
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#[derive(Debug, Default, PartialEq, Eq, Hash, Clone, Copy)]
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pub enum Selection {
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/// The element is not selected.
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#[default]
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Unselected,
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/// The selection state of the element is indeterminate.
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Indeterminate,
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/// The element is selected.
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Selected,
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}
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impl Display for Selection {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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Self::Unselected => write!(f, "Unselected"),
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Self::Indeterminate => write!(f, "Indeterminate"),
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Self::Selected => write!(f, "Selected"),
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}
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}
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}
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impl Selection {
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/// Returns the inverse of the current selection status.
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///
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/// Indeterminate states become selected if inverted.
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pub fn inverse(&self) -> Self {
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match self {
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Self::Unselected | Self::Indeterminate => Self::Selected,
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Self::Selected => Self::Unselected,
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}
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}
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pub fn is_selected(&self) -> bool {
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matches!(self, Self::Selected)
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}
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}
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