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//! Title module.
//!
//! This public module implements the Liora selectable heading/title component. 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::{SelectableText, SelectableTextOptions, SelectableTextWrap};
use gpui::{
App, Component, ElementId, IntoElement, RenderOnce, SharedString, TextStyle, Window,
prelude::*, px,
};
use liora_core::Config;
/// Fluent native GPUI component for rendering Liora title.
pub struct Title {
content: SharedString,
level: u8,
selectable: bool,
id: SharedString,
}
impl Title {
/// Creates `Title` initialized from the supplied content.
pub fn new(content: impl Into<SharedString>) -> Self {
Self {
content: content.into(),
level: 1,
selectable: true,
id: liora_core::unique_id("title"),
}
}
/// Sets the h1 value used by the component.
pub fn h1(mut self) -> Self {
self.level = 1;
self
}
/// Sets the h2 value used by the component.
pub fn h2(mut self) -> Self {
self.level = 2;
self
}
/// Sets the h3 value used by the component.
pub fn h3(mut self) -> Self {
self.level = 3;
self
}
/// Sets the h4 value used by the component.
pub fn h4(mut self) -> Self {
self.level = 4;
self
}
/// Sets the h5 value used by the component.
pub fn h5(mut self) -> Self {
self.level = 5;
self
}
/// Sets the h6 value used by the component.
pub fn h6(mut self) -> Self {
self.level = 6;
self
}
/// Toggles whether the rendered text can be selected.
pub fn selectable(mut self, selectable: bool) -> Self {
self.selectable = selectable;
self
}
/// Assigns a stable element id used by GPUI state, hit testing, and automated interaction tests.
pub fn id(mut self, id: impl Into<SharedString>) -> Self {
self.id = id.into();
self
}
/// Registers GPUI key bindings required for keyboard interaction.
pub fn register_key_bindings(cx: &mut App) {
SelectableText::register_key_bindings(cx);
}
fn render_with_theme(
self,
theme: &liora_theme::Theme,
window: &mut Window,
cx: &mut App,
) -> gpui::AnyElement {
let (size, weight) = match self.level {
1 => (theme.font_size.xl + 4.0, gpui::FontWeight::BOLD),
2 => (theme.font_size.xl, gpui::FontWeight::BOLD),
3 => (theme.font_size.lg + 2.0, gpui::FontWeight::BOLD),
4 => (theme.font_size.lg, gpui::FontWeight::BOLD),
5 => (theme.font_size.md, gpui::FontWeight::BOLD),
_ => (theme.font_size.sm, gpui::FontWeight::BOLD),
};
let font_size = px(size);
let line_height = font_size * 1.35;
let text_color = theme.neutral.text_1;
if self.selectable {
let mut style = TextStyle::default();
style.color = text_color;
style.font_size = font_size.into();
style.line_height = line_height.into();
style.font_weight = weight;
style.white_space = gpui::WhiteSpace::Normal;
return SelectableText::view(
SelectableTextOptions {
id: ElementId::from(self.id.clone()),
text: self.content.clone(),
runs: vec![style.to_run(self.content.len())],
font_size,
line_height,
text_color,
wrap: SelectableTextWrap::Normal,
key_context: "SelectableText",
fill_width: true,
},
window,
cx,
);
}
gpui::div()
.text_size(font_size)
.line_height(line_height)
.font_weight(weight)
.text_color(text_color)
.child(self.content.clone())
.into_any_element()
}
}
impl RenderOnce for Title {
fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
let theme = cx.global::<Config>().theme.clone();
self.render_with_theme(&theme, _window, cx)
}
}
impl IntoElement for Title {
type Element = Component<Self>;
fn into_element(self) -> Self::Element {
Component::new(self)
}
}
#[cfg(test)]
mod tests {
#[test]
fn title_uses_selectable_text_for_native_selection() {
let source = include_str!("title.rs");
assert!(source.contains("SelectableText::view"));
assert!(source.contains("pub fn selectable"));
assert!(source.contains("pub fn register_key_bindings"));
}
}