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//! Accessibility (AccessKit) demo app.
//!
//! Run with: `cargo run -p gpui --example a11y`
//!
//! Or on Linux: `cargo run -p gpui --features gpui_platform/wayland,gpui_platform/x11 --example a11y`
//!
//! This app uses GPUI's accessibility APIs to attach structured information to
//! the element tree, which allows assistive technology to see and interact with
//! the UI programmatically.
//!
//! The app behaves as follows:
//! - It opens a single window.
//! - The window's title is "GPUI Accessibility Demo".
//! - The window has a sequence of UI elements, stacked vertically:
//! - A heading with the text "Accessibility Demo".
//! - A row containing two elements:
//! - A spin button (role `SpinButton`) labelled "Counter: <n>", where
//! `<n>` is the current count. It supports `Increment` and `Decrement`
//! accessible actions, and also increments on click. The numeric value
//! is clamped to a minimum of 0.
//! - A button labelled "Reset counter" that resets the count to 0.
//! - A row containing two elements:
//! - A switch, that can be toggled, and starts disabled. Toggling the switch
//! does nothing.
//! - The text "Enable feature".
//! - A "to-do" list, with three items, each represented with a `Text` element:
//! - "1. Write code"
//! - "2. Run tests"
//! - "3. Ship it"
use open_gpui::{
AccessibleAction, App, Bounds, Context, FocusHandle, KeyBinding, Role, SharedString, Toggled,
Window, WindowBounds, WindowOptions, actions, div, prelude::*, px, rgb, size, text,
};
use open_gpui_platform::application;
actions!(a11y_example, [Tab, TabPrev]);
struct A11yDemo {
focus_handle: FocusHandle,
count: i32,
enabled: bool,
}
impl A11yDemo {
fn new(window: &mut Window, cx: &mut Context<Self>) -> Self {
let focus_handle = cx.focus_handle();
window.focus(&focus_handle, cx);
Self {
focus_handle,
count: 0,
enabled: false,
}
}
}
impl Render for A11yDemo {
fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
div()
.id("root")
.role(Role::Application)
.aria_label("Accessibility Demo")
.track_focus(&self.focus_handle)
.on_action(cx.listener(|_, _: &Tab, window, cx| window.focus_next(cx)))
.on_action(cx.listener(|_, _: &TabPrev, window, cx| window.focus_prev(cx)))
.size_full()
.flex()
.flex_col()
.gap_4()
.p_4()
.bg(rgb(0x1e1e2e))
.text_color(rgb(0xcdd6f4))
// Heading
.child(
div()
.id("heading")
.role(Role::Heading)
.aria_level(1)
.aria_label("Accessibility Demo")
.text_xl()
.font_weight(open_gpui::FontWeight::BOLD)
.child(text!("Accessibility Demo")),
)
// Counter — uses a SpinButton role with Increment/Decrement
// actions so screen readers can adjust the value directly.
// Click also works via the built-in handler.
.child(
div()
.flex()
.items_center()
.gap_3()
.child(
div()
.id("counter")
.focusable()
.tab_stop(true)
.role(Role::SpinButton)
.aria_label(SharedString::from(format!("Counter: {}", self.count)))
.aria_numeric_value(self.count as f64)
.aria_min_numeric_value(0.0)
.on_a11y_action(AccessibleAction::Increment, {
let this = cx.entity().downgrade();
move |_, _, cx| {
this.update(cx, |this, cx| {
this.count += 1;
cx.notify();
})
.ok();
}
})
.on_a11y_action(AccessibleAction::Decrement, {
let this = cx.entity().downgrade();
move |_, _, cx| {
this.update(cx, |this, cx| {
this.count = (this.count - 1).max(0);
cx.notify();
})
.ok();
}
})
.on_click(cx.listener(|this, _, _, cx| {
this.count += 1;
cx.notify();
}))
.px_3()
.py_1()
.rounded_md()
.bg(rgb(0x89b4fa))
.text_color(rgb(0x1e1e2e))
.cursor_pointer()
.child(text!(format!("Count: {}", self.count))),
)
.child(
div()
.id("reset")
.focusable()
.tab_stop(true)
.role(Role::Button)
.aria_label("Reset counter")
.px_3()
.py_1()
.rounded_md()
.bg(rgb(0x585b70))
.cursor_pointer()
.on_click(cx.listener(|this, _, _, cx| {
this.count = 0;
cx.notify();
}))
.child(text!("Reset")),
),
)
// A toggle switch
.child(
div()
.flex()
.items_center()
.gap_2()
.child(
div()
.id("toggle")
.focusable()
.tab_stop(true)
.role(Role::Switch)
.aria_label("Enable feature")
.aria_toggled(if self.enabled {
Toggled::True
} else {
Toggled::False
})
.w(px(44.))
.h(px(24.))
.rounded_full()
.cursor_pointer()
.when(self.enabled, |el| el.bg(rgb(0x89b4fa)))
.when(!self.enabled, |el| el.bg(rgb(0x585b70)))
.child(
div()
.size(px(20.))
.rounded_full()
.bg(open_gpui::white())
.mt(px(2.))
.when(self.enabled, |el| el.ml(px(22.)))
.when(!self.enabled, |el| el.ml(px(2.))),
)
.on_click(cx.listener(|this, _, _, cx| {
this.enabled = !this.enabled;
cx.notify();
})),
)
.child(text!("Enable feature")),
)
// A short list
.child(
div()
.id("task-list")
.role(Role::List)
.aria_label("Tasks")
.flex()
.flex_col()
.gap_1()
.children(
["Write code", "Run tests", "Ship it"]
.iter()
.enumerate()
.map(|(i, label)| {
div()
.id(("task", i))
.role(Role::ListItem)
.aria_label(SharedString::from(*label))
.aria_position_in_set(i + 1)
.aria_size_of_set(3)
.py_1()
.px_2()
// Note: even though this `text!` macro
// produces multiple elements, it doesn't
// need its own unique ID because the parent
// div has different IDs for each string.
.child(text!(format!("{}. {}", i + 1, label)))
}),
),
)
}
}
fn run_example() {
application().run(|cx: &mut App| {
cx.bind_keys([
KeyBinding::new("tab", Tab, None),
KeyBinding::new("shift-tab", TabPrev, None),
]);
let bounds = Bounds::centered(None, size(px(500.), px(400.0)), cx);
cx.open_window(
WindowOptions {
window_bounds: Some(WindowBounds::Windowed(bounds)),
titlebar: Some(open_gpui::TitlebarOptions {
title: Some("GPUI Accessibility Demo".into()),
..Default::default()
}),
..Default::default()
},
|window, cx| cx.new(|cx| A11yDemo::new(window, cx)),
)
.unwrap();
cx.activate(true);
});
}
#[cfg(not(target_family = "wasm"))]
fn main() {
env_logger::builder()
.filter_level(log::LevelFilter::Warn)
.filter_module("gpui", log::LevelFilter::Info)
.init();
run_example();
}
#[cfg(target_family = "wasm")]
#[wasm_bindgen::prelude::wasm_bindgen(start)]
pub fn start() {
open_gpui_platform::web_init();
run_example();
}