use gpui::{    AnyElement, App, DismissEvent, Entity, EventEmitter, FocusHandle, Focusable, Task, WeakEntity,};use itertools::Itertools;use picker::{Picker, PickerDelegate};use project::{    git::{GitStore, Repository},    Project,};use std::sync::Arc;use ui::{prelude::*, ListItem, ListItemSpacing}; pub struct RepositorySelector {    picker: Entity<Picker<RepositorySelectorDelegate>>,} impl RepositorySelector {    pub fn new(        project_handle: Entity<Project>,        window: &mut Window,        cx: &mut Context<Self>,    ) -> Self {        let git_store = project_handle.read(cx).git_store().clone();        let repository_entries = git_store.update(cx, |git_store, cx| {            filtered_repository_entries(git_store, cx)        });        let project = project_handle.read(cx);        let filtered_repositories = repository_entries.clone();         let widest_item_ix = repository_entries.iter().position_max_by(|a, b| {            a.read(cx)                .display_name(project, cx)                .len()                .cmp(&b.read(cx).display_name(project, cx).len())        });         let delegate = RepositorySelectorDelegate {            project: project_handle.downgrade(),            repository_selector: cx.entity().downgrade(),            repository_entries,            filtered_repositories,            selected_index: 0,        };         let picker = cx.new(|cx| {            Picker::nonsearchable_uniform_list(delegate, window, cx)                .widest_item(widest_item_ix)                .max_height(Some(rems(20.).into()))        });         RepositorySelector { picker }    }} pub(crate) fn filtered_repository_entries(    git_store: &GitStore,    cx: &App,) -> Vec<Entity<Repository>> {    let mut repository_entries = git_store.all_repositories();    repository_entries.sort_by_key(|repo| {        let repo = repo.read(cx);        (            repo.dot_git_abs_path.clone(),            repo.worktree_abs_path.clone(),        )    });    // Remove any entry that comes from a single file worktree and represents a repository that is also represented by a non-single-file worktree.    repository_entries        .chunk_by(|a, b| a.read(cx).dot_git_abs_path == b.read(cx).dot_git_abs_path)        .flat_map(|chunk| {            let has_non_single_file_worktree = chunk                .iter()                .any(|repo| !repo.read(cx).is_from_single_file_worktree);            chunk                .iter()                .filter(move |repo| {                    !repo.read(cx).is_from_single_file_worktree || !has_non_single_file_worktree                })                .cloned()        })        .collect()} impl EventEmitter<DismissEvent> for RepositorySelector {} impl Focusable for RepositorySelector {    fn focus_handle(&self, cx: &App) -> FocusHandle {        self.picker.focus_handle(cx)    }} impl Render for RepositorySelector {    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {        self.picker.clone()    }} pub struct RepositorySelectorDelegate {    project: WeakEntity<Project>,    repository_selector: WeakEntity<RepositorySelector>,    repository_entries: Vec<Entity<Repository>>,    filtered_repositories: Vec<Entity<Repository>>,    selected_index: usize,} impl RepositorySelectorDelegate {    pub fn update_repository_entries(&mut self, all_repositories: Vec<Entity<Repository>>) {        self.repository_entries = all_repositories.clone();        self.filtered_repositories = all_repositories;        self.selected_index = 0;    }} impl PickerDelegate for RepositorySelectorDelegate {    type ListItem = ListItem;     fn match_count(&self) -> usize {        self.filtered_repositories.len()    }     fn selected_index(&self) -> usize {        self.selected_index    }     fn set_selected_index(        &mut self,        ix: usize,        _window: &mut Window,        cx: &mut Context<Picker<Self>>,    ) {        self.selected_index = ix.min(self.filtered_repositories.len().saturating_sub(1));        cx.notify();    }     fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {        "Select a repository...".into()    }     fn update_matches(        &mut self,        query: String,        window: &mut Window,        cx: &mut Context<Picker<Self>>,    ) -> Task<()> {        let all_repositories = self.repository_entries.clone();         cx.spawn_in(window, |this, mut cx| async move {            let filtered_repositories = cx                .background_spawn(async move {                    if query.is_empty() {                        all_repositories                    } else {                        all_repositories                            .into_iter()                            .filter(|_repo_info| {                                // TODO: Implement repository filtering logic                                true                            })                            .collect()                    }                })                .await;             this.update_in(&mut cx, |this, window, cx| {                this.delegate.filtered_repositories = filtered_repositories;                this.delegate.set_selected_index(0, window, cx);                cx.notify();            })            .ok();        })    }     fn confirm(&mut self, _secondary: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {        let Some(selected_repo) = self.filtered_repositories.get(self.selected_index) else {            return;        };        selected_repo.update(cx, |selected_repo, cx| selected_repo.activate(cx));        self.dismissed(window, cx);    }     fn dismissed(&mut self, _window: &mut Window, cx: &mut Context<Picker<Self>>) {        self.repository_selector            .update(cx, |_this, cx| cx.emit(DismissEvent))            .ok();    }     fn render_header(        &self,        _window: &mut Window,        _cx: &mut Context<Picker<Self>>,    ) -> Option<AnyElement> {        // TODO: Implement header rendering if needed        None    }     fn render_match(        &self,        ix: usize,        selected: bool,        _window: &mut Window,        cx: &mut Context<Picker<Self>>,    ) -> Option<Self::ListItem> {        let project = self.project.upgrade()?;        let repo_info = self.filtered_repositories.get(ix)?;        let display_name = repo_info.read(cx).display_name(project.read(cx), cx);        Some(            ListItem::new(ix)                .inset(true)                .spacing(ListItemSpacing::Sparse)                .toggle_state(selected)                .child(Label::new(display_name)),        )    }}