use fuzzy::{StringMatch, StringMatchCandidate, match_strings};use gpui::{    App, Context, DismissEvent, Entity, EventEmitter, Focusable, Render, Task, WeakEntity, Window,    actions,};use picker::{Picker, PickerDelegate};use project::Fs;use settings::{BaseKeymap, Settings, update_settings_file};use std::sync::Arc;use ui::{ListItem, ListItemSpacing, prelude::*};use util::ResultExt;use workspace::{ModalView, Workspace, ui::HighlightedLabel}; actions!(    zed,    [        /// Toggles the base keymap selector modal.        ToggleBaseKeymapSelector    ]); pub fn init(cx: &mut App) {    cx.observe_new(|workspace: &mut Workspace, _window, _cx| {        workspace.register_action(toggle);    })    .detach();} pub fn toggle(    workspace: &mut Workspace,    _: &ToggleBaseKeymapSelector,    window: &mut Window,    cx: &mut Context<Workspace>,) {    let fs = workspace.app_state().fs.clone();    workspace.toggle_modal(window, cx, |window, cx| {        BaseKeymapSelector::new(            BaseKeymapSelectorDelegate::new(cx.entity().downgrade(), fs, cx),            window,            cx,        )    });} pub struct BaseKeymapSelector {    picker: Entity<Picker<BaseKeymapSelectorDelegate>>,} impl Focusable for BaseKeymapSelector {    fn focus_handle(&self, cx: &App) -> gpui::FocusHandle {        self.picker.focus_handle(cx)    }} impl EventEmitter<DismissEvent> for BaseKeymapSelector {}impl ModalView for BaseKeymapSelector {} impl BaseKeymapSelector {    pub fn new(        delegate: BaseKeymapSelectorDelegate,        window: &mut Window,        cx: &mut Context<BaseKeymapSelector>,    ) -> Self {        let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));        Self { picker }    }} impl Render for BaseKeymapSelector {    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {        v_flex().w(rems(34.)).child(self.picker.clone())    }} pub struct BaseKeymapSelectorDelegate {    selector: WeakEntity<BaseKeymapSelector>,    matches: Vec<StringMatch>,    selected_index: usize,    fs: Arc<dyn Fs>,} impl BaseKeymapSelectorDelegate {    fn new(        selector: WeakEntity<BaseKeymapSelector>,        fs: Arc<dyn Fs>,        cx: &mut Context<BaseKeymapSelector>,    ) -> Self {        let base = BaseKeymap::get(None, cx);        let selected_index = BaseKeymap::OPTIONS            .iter()            .position(|(_, value)| value == base)            .unwrap_or(0);        Self {            selector,            matches: Vec::new(),            selected_index,            fs,        }    }} impl PickerDelegate for BaseKeymapSelectorDelegate {    type ListItem = ui::ListItem;     fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {        "Select a base keymap...".into()    }     fn match_count(&self) -> usize {        self.matches.len()    }     fn selected_index(&self) -> usize {        self.selected_index    }     fn set_selected_index(        &mut self,        ix: usize,        _window: &mut Window,        _: &mut Context<Picker<BaseKeymapSelectorDelegate>>,    ) {        self.selected_index = ix;    }     fn update_matches(        &mut self,        query: String,        window: &mut Window,        cx: &mut Context<Picker<BaseKeymapSelectorDelegate>>,    ) -> Task<()> {        let background = cx.background_executor().clone();        let candidates = BaseKeymap::names()            .enumerate()            .map(|(id, name)| StringMatchCandidate::new(id, name))            .collect::<Vec<_>>();         cx.spawn_in(window, async move |this, cx| {            let matches = if query.is_empty() {                candidates                    .into_iter()                    .enumerate()                    .map(|(index, candidate)| StringMatch {                        candidate_id: index,                        string: candidate.string,                        positions: Vec::new(),                        score: 0.0,                    })                    .collect()            } else {                match_strings(                    &candidates,                    &query,                    false,                    true,                    100,                    &Default::default(),                    background,                )                .await            };             this.update(cx, |this, _| {                this.delegate.matches = matches;                this.delegate.selected_index = this                    .delegate                    .selected_index                    .min(this.delegate.matches.len().saturating_sub(1));            })            .log_err();        })    }     fn confirm(        &mut self,        _: bool,        _: &mut Window,        cx: &mut Context<Picker<BaseKeymapSelectorDelegate>>,    ) {        if let Some(selection) = self.matches.get(self.selected_index) {            let base_keymap = BaseKeymap::from_names(&selection.string);             telemetry::event!(                "Settings Changed",                setting = "keymap",                value = base_keymap.to_string()            );             update_settings_file(self.fs.clone(), cx, move |setting, _| {                setting.base_keymap = Some(base_keymap.into())            });        }         self.selector            .update(cx, |_, cx| {                cx.emit(DismissEvent);            })            .ok();    }     fn dismissed(&mut self, _: &mut Window, cx: &mut Context<Picker<BaseKeymapSelectorDelegate>>) {        self.selector            .update(cx, |_, cx| {                cx.emit(DismissEvent);            })            .log_err();    }     fn render_match(        &self,        ix: usize,        selected: bool,        _window: &mut Window,        _cx: &mut Context<Picker<Self>>,    ) -> Option<Self::ListItem> {        let keymap_match = &self.matches.get(ix)?;         Some(            ListItem::new(ix)                .inset(true)                .spacing(ListItemSpacing::Sparse)                .toggle_state(selected)                .child(HighlightedLabel::new(                    keymap_match.string.clone(),                    keymap_match.positions.clone(),                )),        )    }}