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//! Checkbox module.
//!
//! This public module implements the Liora single checkbox control with keyboard and pointer interaction. It keeps the reusable
//! component logic inside `liora-components` rather than Gallery or Docs so
//! downstream GPUI applications can compose the same behavior with their own
//! app state, assets, and release policy.
//!
//! ## Usage model
//!
//! Components in this module render native GPUI element trees. Stateless builder
//! values can be constructed inline, while controls with focus, selection,
//! popup, drag, or editing state should be stored as `gpui::Entity<T>` fields in
//! the parent view so state survives GPUI render passes.
//!
//! ## Design contract
//!
//! The implementation should use Liora theme tokens from `liora-core` and
//! `liora-theme`, keep accessibility-oriented keyboard/pointer behavior close to
//! the component, and avoid app-specific Gallery/Docs resources in this SDK
//! crate.
use crate::gpui_compat::element_id;
use crate::motion::pop_in;
use gpui::{
App, Context, EventEmitter, FocusHandle, Focusable, Hsla, KeyBinding, MouseButton, Render,
Rgba, SharedString, Window, prelude::*, px,
};
use liora_icons::Icon;
use liora_icons_lucide::IconName;
fn rgba(r: u8, g: u8, b: u8, a: f32) -> Hsla {
Rgba {
r: r as f32 / 255.0,
g: g as f32 / 255.0,
b: b as f32 / 255.0,
a,
}
.into()
}
gpui::actions!(
checkbox,
[
#[doc = "Keyboard action that toggles the focused checkbox."]
CheckboxToggle
]
);
/// Fluent native GPUI component for rendering Liora checkbox.
pub struct Checkbox {
checked: bool,
disabled: bool,
label: Option<SharedString>,
focus_handle: FocusHandle,
on_change: Option<Box<dyn Fn(bool, &mut Window, &mut App) + 'static>>,
}
#[derive(Clone, Copy)]
/// Fluent native GPUI component for rendering Liora checkbox changed.
pub struct CheckboxChanged(pub bool);
impl EventEmitter<CheckboxChanged> for Checkbox {}
impl Checkbox {
/// Creates `Checkbox` initialized from the supplied checked.
pub fn new(checked: bool, cx: &mut Context<Self>) -> Self {
Self {
checked,
disabled: false,
label: None,
focus_handle: cx.focus_handle(),
on_change: None,
}
}
/// Toggles the disabled state and suppresses user interaction when enabled.
pub fn disabled(mut self, d: bool) -> Self {
self.disabled = d;
self
}
/// Returns the stable user-facing label for this value.
pub fn label(mut self, text: impl Into<SharedString>) -> Self {
self.label = Some(text.into());
self
}
/// Registers a callback that runs when change occurs.
pub fn on_change(mut self, cb: impl Fn(bool, &mut Window, &mut App) + 'static) -> Self {
self.on_change = Some(Box::new(cb));
self
}
/// Updates the stored disabled value and keeps the existing component identity.
pub fn set_disabled(&mut self, d: bool, cx: &mut Context<Self>) {
self.disabled = d;
cx.notify();
}
/// Registers GPUI key bindings required for keyboard interaction.
pub fn register_key_bindings(cx: &mut App) {
cx.bind_keys([
KeyBinding::new("space", CheckboxToggle, None),
KeyBinding::new("enter", CheckboxToggle, None),
]);
}
fn toggle(&mut self, _: &CheckboxToggle, window: &mut Window, cx: &mut Context<Self>) {
if !self.disabled {
self.checked = !self.checked;
cx.emit(CheckboxChanged(self.checked));
cx.notify();
if let Some(ref cb) = self.on_change {
cb(self.checked, window, cx);
}
}
}
}
impl Focusable for Checkbox {
fn focus_handle(&self, _cx: &App) -> FocusHandle {
self.focus_handle.clone()
}
}
impl Render for Checkbox {
fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
let theme = &cx.global::<liora_core::Config>().theme;
let focused = self.focus_handle.is_focused(_window);
let sz = 16.0;
let (bg, border, check_color) = if self.disabled {
(
theme.neutral.hover,
theme.neutral.border,
theme.neutral.text_disabled,
)
} else if self.checked {
(
theme.primary.base,
theme.primary.base,
rgba(255, 255, 255, 1.0),
)
} else {
(
rgba(0, 0, 0, 0.0),
if focused {
theme.primary.base
} else {
theme.neutral.border
},
rgba(0, 0, 0, 0.0),
)
};
let mut row = gpui::div()
.flex()
.flex_row()
.items_center()
.gap_2()
.on_action(cx.listener(Self::toggle));
if !self.disabled {
row = row.cursor_pointer().track_focus(&self.focus_handle);
row = row.on_mouse_down(
MouseButton::Left,
cx.listener(|this, _, window, _cx| {
window.focus(&this.focus_handle);
}),
);
row = row.on_mouse_up(
MouseButton::Left,
cx.listener(|this, _, window, cx| {
this.toggle(&CheckboxToggle, window, cx);
}),
);
} else {
row = row.cursor_not_allowed();
}
let mut box_el = gpui::div()
.flex_none()
.w(px(sz))
.h(px(sz))
.rounded(px(2.0))
.bg(bg)
.border_1()
.border_color(border)
.flex()
.items_center()
.justify_center();
if self.checked {
box_el = box_el.child(pop_in(
element_id(format!(
"liora-checkbox-check-motion-{}",
cx.entity().entity_id()
)),
gpui::div()
.flex()
.items_center()
.justify_center()
.child(Icon::new(IconName::Check).size(px(12.0)).color(check_color)),
));
}
row = row.child(box_el);
if let Some(ref label) = self.label {
row = row.child(
gpui::div()
.text_size(px(theme.font_size.md))
.text_color(theme.neutral.text_1)
.child(label.clone()),
);
}
row
}
}