forked from reya/gpui-native-kit
109 lines
3.4 KiB
Rust
109 lines
3.4 KiB
Rust
use std::{cell::Cell, rc::Rc, time::Duration};
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use gpui::{
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AppContext as _, Context, Entity, IntoElement, ParentElement as _, Render, SharedString,
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Styled as _, TestAppContext, VisualTestContext, Window, div,
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};
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use gpui_native_core::common::v_flex;
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use gpui_native_core::field::Field;
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use gpui_native_core::init;
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use gpui_native_core::input::{Input, InputState};
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struct FieldHost {
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url: Entity<InputState>,
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renders: Rc<Cell<usize>>,
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}
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impl Render for FieldHost {
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fn render(&mut self, _window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
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self.renders.set(self.renders.get() + 1);
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let url_error = self
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.url
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.read(cx)
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.value()
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.is_empty()
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.then_some("Required")
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.map(SharedString::from);
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div().size_full().p_4().child(
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v_flex().gap_3().child(
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Field::new("bench-url", "Server URL")
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.description("Where your patches are sent.")
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.error(url_error)
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.child(Input::new("bench-url-input", self.url.clone())),
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),
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)
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}
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}
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/// A field page in a real window; the url input is focused unless
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/// `focus` is false, which leaves the page truly idle.
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fn field_host(
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focus: bool,
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) -> (
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TestAppContext,
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Entity<InputState>,
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VisualTestContext,
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Rc<Cell<usize>>,
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) {
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let cx = TestAppContext::single();
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cx.update(init);
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let renders = Rc::new(Cell::new(0));
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let renders_for_host = renders.clone();
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let (url, window) = cx.update(|cx| {
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let url = InputState::new(cx);
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let url_for_host = url.clone();
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let window = cx
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.open_window(gpui::WindowOptions::default(), |_, cx| {
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cx.new(|_| FieldHost {
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url: url_for_host,
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renders: renders_for_host.clone(),
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})
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})
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.unwrap();
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(url, window)
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});
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let mut visual = VisualTestContext::from_window(window.into(), &cx);
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visual.update(|window, cx| {
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if focus {
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let focus = url.read(cx).focus_handle();
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window.focus(&focus, cx);
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}
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window.draw(cx).clear(cx);
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});
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(cx, url, visual, renders)
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}
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#[test]
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fn an_idle_field_page_schedules_no_frames() {
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let (_cx, _url, mut visual, _renders) = field_host(false);
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let frames = visual.update(|window, cx| window.simulate_next_frame(cx));
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assert_eq!(
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frames, 0,
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"an idle unfocused field page must not request animation frames"
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);
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}
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/// The caret blink is fps-capped: it must never demand a next frame, and its
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/// redraws arrive on the executor timer at the blink cadence.
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#[test]
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fn a_focused_field_blink_is_fps_capped_and_still_redraws() {
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let (cx, _url, mut visual, renders) = field_host(true);
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let renders_after_focus = renders.get();
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let frames = visual.update(|window, cx| window.simulate_next_frame(cx));
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assert_eq!(
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frames, 0,
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"the blink must be fps-capped, not per-frame scheduled"
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);
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// The blink redraws through the executor timer (4 fps cap).
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cx.executor().advance_clock(Duration::from_millis(251));
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cx.run_until_parked();
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visual.update(|window, cx| window.draw(cx).clear(cx));
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assert!(
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renders.get() > renders_after_focus,
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"the capped blink must still redraw its page"
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);
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}
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