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//! Card module.
//!
//! This public module implements the Liora card container for grouped content with optional header and footer regions. 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 gpui::{
AnyElement, App, Component, IntoElement, Pixels, RenderOnce, SharedString, Window, div,
prelude::*, px,
};
use liora_core::{Config, stable_unique_id};
/// Fluent native GPUI component for rendering Liora card.
pub struct Card {
title: Option<SharedString>,
header: Option<AnyElement>,
footer: Option<AnyElement>,
body: AnyElement,
hoverable: bool,
shadow: bool,
width: Option<Pixels>,
shrink: bool,
}
impl Card {
/// Creates `Card` initialized from the supplied body.
pub fn new(body: impl IntoElement) -> Self {
Self {
title: None,
header: None,
footer: None,
body: body.into_any_element(),
hoverable: false,
shadow: true,
width: None,
shrink: true,
}
}
/// Sets the primary title text displayed by the component.
pub fn title(mut self, title: impl Into<SharedString>) -> Self {
self.title = Some(title.into());
self
}
/// Sets the header value used by the component.
pub fn header(mut self, header: impl IntoElement) -> Self {
self.header = Some(header.into_any_element());
self
}
/// Sets the footer value used by the component.
pub fn footer(mut self, footer: impl IntoElement) -> Self {
self.footer = Some(footer.into_any_element());
self
}
/// Enables hover styling for the component frame.
pub fn hoverable(mut self) -> Self {
self.hoverable = true;
self
}
/// Disables the default card shadow.
pub fn no_shadow(mut self) -> Self {
self.shadow = false;
self
}
/// Sets the component width token used during GPUI layout.
pub fn width(mut self, width: impl Into<Pixels>) -> Self {
self.width = Some(width.into());
self
}
/// Applies the predefined width md sizing preset.
pub fn width_md(self) -> Self {
self.width(px(300.0))
}
/// Applies the predefined width lg sizing preset.
pub fn width_lg(self) -> Self {
self.width(px(400.0))
}
/// Prevents the component from shrinking in flex layouts.
pub fn no_shrink(mut self) -> Self {
self.shrink = false;
self
}
}
impl RenderOnce for Card {
fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
let theme = cx.global::<Config>().theme.clone();
let id = stable_unique_id("card", "card", _window, cx);
let mut el = div()
.id(id)
.bg(theme.neutral.card)
.border_1()
.border_color(theme.neutral.border)
.rounded(px(theme.radius.md))
.overflow_hidden()
.when(!self.shrink, |s| s.flex_none())
.when_some(self.width, |s, width| s.w(width));
if self.shadow {
el = el.shadow_md();
}
if self.hoverable {
el = el.hover(|s| s.shadow_xl().border_color(theme.primary.base));
}
// We use on_click to ensure the ID-based hover and other interactions are registered correctly
el = el.on_click(|_, _, _| {});
// Header
if let Some(title) = self.title {
el = el.child(
div()
.p_4()
.border_b_1()
.border_color(theme.neutral.border)
.child(div().font_weight(gpui::FontWeight::BOLD).child(title)),
);
} else if let Some(header) = self.header {
el = el.child(
div()
.p_4()
.border_b_1()
.border_color(theme.neutral.border)
.child(header),
);
}
// Body
el = el.child(div().p_4().child(self.body));
// Footer
if let Some(footer) = self.footer {
el = el.child(
div()
.p_4()
.border_t_1()
.border_color(theme.neutral.border)
.bg(theme.neutral.hover)
.child(footer),
);
}
el
}
}
impl IntoElement for Card {
type Element = Component<Self>;
fn into_element(self) -> Self::Element {
Component::new(self)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn card_width_helpers_set_demo_widths() {
assert_eq!(Card::new("body").width_md().width, Some(px(300.0)));
assert_eq!(Card::new("body").width_lg().width, Some(px(400.0)));
}
#[test]
fn card_no_shrink_tracks_scroll_container_usage() {
assert!(!Card::new("body").no_shrink().shrink);
}
}