401 lines
14 KiB
Rust
401 lines
14 KiB
Rust
// use editor::Editor;
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// use gpui::{
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// elements::*,
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// geometry::vector::{vec2f, Vector2F},
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// keymap_matcher::KeymapContext,
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// platform::{CursorStyle, MouseButton},
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// AnyElement, AnyViewHandle, AppContext, Axis, Entity, MouseState, Task, View, ViewContext,
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// ViewHandle,
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// };
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// use menu::{Cancel, Confirm, SecondaryConfirm, SelectFirst, SelectLast, SelectNext, SelectPrev};
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// use parking_lot::Mutex;
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// use std::{cmp, sync::Arc};
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// use util::ResultExt;
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// use workspace::Modal;
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// #[derive(Clone, Copy)]
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// pub enum PickerEvent {
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// Dismiss,
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// }
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use std::ops::Range;
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use gpui::{div, AppContext, Component, Div, Element, ParentElement, Render, ViewContext};
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pub struct Picker<D> {
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delegate: D,
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// query_editor: ViewHandle<Editor>,
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// list_state: UniformListState,
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// max_size: Vector2F,
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// theme: Arc<Mutex<Box<dyn Fn(&theme::Theme) -> theme::Picker>>>,
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// confirmed: bool,
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// pending_update_matches: Option<Task<Option<()>>>,
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// confirm_on_update: Option<bool>,
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// has_focus: bool,
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}
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pub trait PickerDelegate: Sized + 'static {
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type ListItem: Element<Picker<Self>>;
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// fn placeholder_text(&self) -> Arc<str>;
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// fn match_count(&self) -> usize;
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// fn selected_index(&self) -> usize;
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// fn set_selected_index(&mut self, ix: usize, cx: &mut ViewContext<Picker<Self>>);
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// fn update_matches(&mut self, query: String, cx: &mut ViewContext<Picker<Self>>) -> Task<()>;
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// fn confirm(&mut self, secondary: bool, cx: &mut ViewContext<Picker<Self>>);
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// fn dismissed(&mut self, cx: &mut ViewContext<Picker<Self>>);
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// todo!("rename to render_candidate?")
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fn render_match(
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&self,
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ix: usize,
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active: bool,
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hovered: bool,
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selected: bool,
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cx: &mut ViewContext<Picker<Self>>,
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) -> Self::ListItem;
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// fn center_selection_after_match_updates(&self) -> bool {
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// false
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// }
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// fn render_header(
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// &self,
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// _cx: &mut ViewContext<Picker<Self>>,
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// ) -> Option<AnyElement<Picker<Self>>> {
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// None
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// }
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// fn render_footer(
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// &self,
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// _cx: &mut ViewContext<Picker<Self>>,
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// ) -> Option<AnyElement<Picker<Self>>> {
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// None
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// }
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}
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// impl<D: PickerDelegate> Entity for Picker<D> {
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// type Event = PickerEvent;
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// }
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impl<D: PickerDelegate> Render for Picker<D> {
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type Element = Div<Self>;
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fn render(&mut self, cx: &mut gpui::ViewContext<Self>) -> Self::Element {
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div().child(list(
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"candidates",
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|this: &mut Picker<D>, visible_range, cx| {
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visible_range
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.into_iter()
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.map(|ix| this.delegate.render_match(ix, false, false, false, cx))
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},
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))
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}
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}
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fn list<'a, D: PickerDelegate, F, I>(id: &'static str, f: F) -> Div<Picker<D>>
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where
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F: FnOnce(&'a mut Picker<D>, Range<usize>, &'a mut ViewContext<Picker<D>>) -> I,
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I: 'a + Iterator<Item = D::ListItem>,
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{
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todo!();
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}
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// impl<D: PickerDelegate> View for Picker<D> {
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// fn ui_name() -> &'static str {
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// "Picker"
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// }
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// fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
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// let theme = (self.theme.lock())(theme::current(cx).as_ref());
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// let query = self.query(cx);
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// let match_count = self.delegate.match_count();
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// let container_style;
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// let editor_style;
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// if query.is_empty() && match_count == 0 {
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// container_style = theme.empty_container;
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// editor_style = theme.empty_input_editor.container;
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// } else {
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// container_style = theme.container;
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// editor_style = theme.input_editor.container;
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// };
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// Flex::new(Axis::Vertical)
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// .with_child(
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// ChildView::new(&self.query_editor, cx)
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// .contained()
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// .with_style(editor_style),
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// )
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// .with_children(self.delegate.render_header(cx))
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// .with_children(if match_count == 0 {
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// if query.is_empty() {
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// None
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// } else {
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// Some(
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// Label::new("No matches", theme.no_matches.label.clone())
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// .contained()
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// .with_style(theme.no_matches.container)
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// .into_any(),
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// )
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// }
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// } else {
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// Some(
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// UniformList::new(
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// self.list_state.clone(),
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// match_count,
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// cx,
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// move |this, mut range, items, cx| {
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// let selected_ix = this.delegate.selected_index();
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// range.end = cmp::min(range.end, this.delegate.match_count());
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// items.extend(range.map(move |ix| {
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// MouseEventHandler::new::<D, _>(ix, cx, |state, cx| {
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// this.delegate.render_match(ix, state, ix == selected_ix, cx)
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// })
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// // Capture mouse events
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// .on_down(MouseButton::Left, |_, _, _| {})
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// .on_up(MouseButton::Left, |_, _, _| {})
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// .on_click(MouseButton::Left, move |click, picker, cx| {
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// picker.select_index(ix, click.cmd, cx);
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// })
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// .with_cursor_style(CursorStyle::PointingHand)
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// .into_any()
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// }));
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// },
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// )
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// .contained()
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// .with_margin_top(6.0)
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// .flex(1., false)
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// .into_any(),
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// )
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// })
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// .with_children(self.delegate.render_footer(cx))
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// .contained()
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// .with_style(container_style)
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// .constrained()
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// .with_max_width(self.max_size.x())
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// .with_max_height(self.max_size.y())
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// .into_any_named("picker")
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// }
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// fn update_keymap_context(&self, keymap: &mut KeymapContext, _: &AppContext) {
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// Self::reset_to_default_keymap_context(keymap);
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// keymap.add_identifier("menu");
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// }
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// fn focus_in(&mut self, _: AnyViewHandle, cx: &mut ViewContext<Self>) {
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// self.has_focus = true;
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// if cx.is_self_focused() {
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// cx.focus(&self.query_editor);
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// }
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// }
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// fn focus_out(&mut self, _: AnyViewHandle, _: &mut ViewContext<Self>) {
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// self.has_focus = false;
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// }
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// }
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// impl<D: PickerDelegate> Modal for Picker<D> {
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// fn has_focus(&self) -> bool {
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// self.has_focus
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// }
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// fn dismiss_on_event(event: &Self::Event) -> bool {
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// matches!(event, PickerEvent::Dismiss)
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// }
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// }
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// impl<D: PickerDelegate> Picker<D> {
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// pub fn init(cx: &mut AppContext) {
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// cx.add_action(Self::select_first);
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// cx.add_action(Self::select_last);
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// cx.add_action(Self::select_next);
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// cx.add_action(Self::select_prev);
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// cx.add_action(Self::confirm);
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// cx.add_action(Self::secondary_confirm);
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// cx.add_action(Self::cancel);
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// }
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// pub fn new(delegate: D, cx: &mut ViewContext<Self>) -> Self {
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// let theme = Arc::new(Mutex::new(
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// Box::new(|theme: &theme::Theme| theme.picker.clone())
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// as Box<dyn Fn(&theme::Theme) -> theme::Picker>,
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// ));
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// let placeholder_text = delegate.placeholder_text();
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// let query_editor = cx.add_view({
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// let picker_theme = theme.clone();
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// |cx| {
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// let mut editor = Editor::single_line(
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// Some(Arc::new(move |theme| {
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// (picker_theme.lock())(theme).input_editor.clone()
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// })),
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// cx,
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// );
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// editor.set_placeholder_text(placeholder_text, cx);
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// editor
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// }
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// });
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// cx.subscribe(&query_editor, Self::on_query_editor_event)
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// .detach();
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// let mut this = Self {
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// query_editor,
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// list_state: Default::default(),
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// delegate,
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// max_size: vec2f(540., 420.),
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// theme,
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// confirmed: false,
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// pending_update_matches: None,
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// confirm_on_update: None,
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// has_focus: false,
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// };
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// this.update_matches(String::new(), cx);
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// this
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// }
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// pub fn with_max_size(mut self, width: f32, height: f32) -> Self {
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// self.max_size = vec2f(width, height);
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// self
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// }
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// pub fn with_theme<F>(self, theme: F) -> Self
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// where
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// F: 'static + Fn(&theme::Theme) -> theme::Picker,
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// {
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// *self.theme.lock() = Box::new(theme);
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// self
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// }
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// pub fn delegate(&self) -> &D {
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// &self.delegate
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// }
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// pub fn delegate_mut(&mut self) -> &mut D {
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// &mut self.delegate
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// }
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// pub fn query(&self, cx: &AppContext) -> String {
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// self.query_editor.read(cx).text(cx)
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// }
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// pub fn set_query(&self, query: impl Into<Arc<str>>, cx: &mut ViewContext<Self>) {
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// self.query_editor
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// .update(cx, |editor, cx| editor.set_text(query, cx));
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// }
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// fn on_query_editor_event(
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// &mut self,
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// _: ViewHandle<Editor>,
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// event: &editor::Event,
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// cx: &mut ViewContext<Self>,
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// ) {
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// match event {
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// editor::Event::BufferEdited { .. } => self.update_matches(self.query(cx), cx),
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// editor::Event::Blurred if !self.confirmed => {
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// self.dismiss(cx);
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// }
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// _ => {}
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// }
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// }
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// pub fn update_matches(&mut self, query: String, cx: &mut ViewContext<Self>) {
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// let update = self.delegate.update_matches(query, cx);
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// self.matches_updated(cx);
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// self.pending_update_matches = Some(cx.spawn(|this, mut cx| async move {
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// update.await;
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// this.update(&mut cx, |this, cx| {
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// this.matches_updated(cx);
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// })
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// .log_err()
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// }));
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// }
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// fn matches_updated(&mut self, cx: &mut ViewContext<Self>) {
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// let index = self.delegate.selected_index();
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// let target = if self.delegate.center_selection_after_match_updates() {
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// ScrollTarget::Center(index)
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// } else {
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// ScrollTarget::Show(index)
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// };
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// self.list_state.scroll_to(target);
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// self.pending_update_matches = None;
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// if let Some(secondary) = self.confirm_on_update.take() {
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// self.confirmed = true;
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// self.delegate.confirm(secondary, cx)
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// }
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// cx.notify();
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// }
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// pub fn select_first(&mut self, _: &SelectFirst, cx: &mut ViewContext<Self>) {
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// if self.delegate.match_count() > 0 {
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// self.delegate.set_selected_index(0, cx);
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// self.list_state.scroll_to(ScrollTarget::Show(0));
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// }
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// cx.notify();
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// }
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// pub fn select_index(&mut self, index: usize, cmd: bool, cx: &mut ViewContext<Self>) {
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// if self.delegate.match_count() > 0 {
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// self.confirmed = true;
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// self.delegate.set_selected_index(index, cx);
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// self.delegate.confirm(cmd, cx);
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// }
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// }
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// pub fn select_last(&mut self, _: &SelectLast, cx: &mut ViewContext<Self>) {
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// let match_count = self.delegate.match_count();
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// if match_count > 0 {
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// let index = match_count - 1;
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// self.delegate.set_selected_index(index, cx);
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// self.list_state.scroll_to(ScrollTarget::Show(index));
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// }
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// cx.notify();
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// }
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// pub fn select_next(&mut self, _: &SelectNext, cx: &mut ViewContext<Self>) {
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// let next_index = self.delegate.selected_index() + 1;
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// if next_index < self.delegate.match_count() {
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// self.delegate.set_selected_index(next_index, cx);
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// self.list_state.scroll_to(ScrollTarget::Show(next_index));
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// }
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// cx.notify();
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// }
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// pub fn select_prev(&mut self, _: &SelectPrev, cx: &mut ViewContext<Self>) {
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// let mut selected_index = self.delegate.selected_index();
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// if selected_index > 0 {
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// selected_index -= 1;
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// self.delegate.set_selected_index(selected_index, cx);
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// self.list_state
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// .scroll_to(ScrollTarget::Show(selected_index));
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// }
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// cx.notify();
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// }
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// pub fn confirm(&mut self, _: &Confirm, cx: &mut ViewContext<Self>) {
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// if self.pending_update_matches.is_some() {
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// self.confirm_on_update = Some(false)
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// } else {
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// self.confirmed = true;
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// self.delegate.confirm(false, cx);
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// }
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// }
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// pub fn secondary_confirm(&mut self, _: &SecondaryConfirm, cx: &mut ViewContext<Self>) {
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// if self.pending_update_matches.is_some() {
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// self.confirm_on_update = Some(true)
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// } else {
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// self.confirmed = true;
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// self.delegate.confirm(true, cx);
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// }
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// }
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// fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
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// self.dismiss(cx);
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// }
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// fn dismiss(&mut self, cx: &mut ViewContext<Self>) {
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// cx.emit(PickerEvent::Dismiss);
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// self.delegate.dismissed(cx);
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// }
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// }
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