+language_selector2

Cargo.lock

@@ -4791,6 +4791,23 @@ dependencies = [
  "workspace",
 ]
 
+[[package]]
+name = "language_selector2"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "editor2",
+ "fuzzy2",
+ "gpui2",
+ "language2",
+ "picker2",
+ "project2",
+ "settings2",
+ "theme2",
+ "util",
+ "workspace2",
+]
+
 [[package]]
 name = "language_tools"
 version = "0.1.0"
@@ -11772,6 +11789,7 @@ dependencies = [
  "isahc",
  "journal2",
  "language2",
+ "language_selector2",
  "lazy_static",
  "libc",
  "log",

Cargo.toml

@@ -61,6 +61,7 @@ members = [
     "crates/language",
     "crates/language2",
     "crates/language_selector",
+    "crates/language_selector2",
     "crates/language_tools",
     "crates/live_kit_client",
     "crates/live_kit_server",

crates/language_selector2/Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "language_selector2"
+version = "0.1.0"
+edition = "2021"
+publish = false
+
+[lib]
+path = "src/language_selector.rs"
+doctest = false
+
+[dependencies]
+editor2 = { package = "editor2", path = "../editor2" }
+fuzzy = { package = "fuzzy2", path = "../fuzzy2" }
+language = { package = "language2", path = "../language2" }
+gpui = { package = "gpui2", path = "../gpui2" }
+picker = { package = "picker2", path = "../picker2" }
+project = { package = "project2", path = "../project2" }
+theme = { package = "theme2", path = "../theme2" }
+settings = { package = "settings2", path = "../settings2" }
+util = { path = "../util" }
+workspace = { package = "workspace2", path = "../workspace2" }
+anyhow.workspace = true
+
+[dev-dependencies]
+editor = { package = "editor2", path = "../editor2", features = ["test-support"] }

crates/language_selector2/src/active_buffer_language.rs

@@ -0,0 +1,96 @@
+use editor::Editor;
+use gpui::{
+    elements::*,
+    platform::{CursorStyle, MouseButton},
+    Entity, Subscription, View, ViewContext, ViewHandle, WeakViewHandle,
+};
+use std::sync::Arc;
+use workspace::{item::ItemHandle, StatusItemView, Workspace};
+
+pub struct ActiveBufferLanguage {
+    active_language: Option<Option<Arc<str>>>,
+    workspace: WeakViewHandle<Workspace>,
+    _observe_active_editor: Option<Subscription>,
+}
+
+impl ActiveBufferLanguage {
+    pub fn new(workspace: &Workspace) -> Self {
+        Self {
+            active_language: None,
+            workspace: workspace.weak_handle(),
+            _observe_active_editor: None,
+        }
+    }
+
+    fn update_language(&mut self, editor: ViewHandle<Editor>, cx: &mut ViewContext<Self>) {
+        self.active_language = Some(None);
+
+        let editor = editor.read(cx);
+        if let Some((_, buffer, _)) = editor.active_excerpt(cx) {
+            if let Some(language) = buffer.read(cx).language() {
+                self.active_language = Some(Some(language.name()));
+            }
+        }
+
+        cx.notify();
+    }
+}
+
+impl Entity for ActiveBufferLanguage {
+    type Event = ();
+}
+
+impl View for ActiveBufferLanguage {
+    fn ui_name() -> &'static str {
+        "ActiveBufferLanguage"
+    }
+
+    fn render(&mut self, cx: &mut ViewContext<Self>) -> AnyElement<Self> {
+        if let Some(active_language) = self.active_language.as_ref() {
+            let active_language_text = if let Some(active_language_text) = active_language {
+                active_language_text.to_string()
+            } else {
+                "Unknown".to_string()
+            };
+            let theme = theme::current(cx).clone();
+
+            MouseEventHandler::new::<Self, _>(0, cx, |state, cx| {
+                let theme = &theme::current(cx).workspace.status_bar;
+                let style = theme.active_language.style_for(state);
+                Label::new(active_language_text, style.text.clone())
+                    .contained()
+                    .with_style(style.container)
+            })
+            .with_cursor_style(CursorStyle::PointingHand)
+            .on_click(MouseButton::Left, |_, this, cx| {
+                if let Some(workspace) = this.workspace.upgrade(cx) {
+                    workspace.update(cx, |workspace, cx| {
+                        crate::toggle(workspace, &Default::default(), cx)
+                    });
+                }
+            })
+            .with_tooltip::<Self>(0, "Select Language", None, theme.tooltip.clone(), cx)
+            .into_any()
+        } else {
+            Empty::new().into_any()
+        }
+    }
+}
+
+impl StatusItemView for ActiveBufferLanguage {
+    fn set_active_pane_item(
+        &mut self,
+        active_pane_item: Option<&dyn ItemHandle>,
+        cx: &mut ViewContext<Self>,
+    ) {
+        if let Some(editor) = active_pane_item.and_then(|item| item.act_as::<Editor>(cx)) {
+            self._observe_active_editor = Some(cx.observe(&editor, Self::update_language));
+            self.update_language(editor, cx);
+        } else {
+            self.active_language = None;
+            self._observe_active_editor = None;
+        }
+
+        cx.notify();
+    }
+}

crates/language_selector2/src/language_selector.rs

@@ -0,0 +1,200 @@
+mod active_buffer_language;
+
+pub use active_buffer_language::ActiveBufferLanguage;
+use anyhow::anyhow;
+use editor::Editor;
+use fuzzy::{match_strings, StringMatch, StringMatchCandidate};
+use gpui::{actions, elements::*, AppContext, ModelHandle, MouseState, ViewContext};
+use language::{Buffer, LanguageRegistry};
+use picker::{Picker, PickerDelegate, PickerEvent};
+use project::Project;
+use std::sync::Arc;
+use util::ResultExt;
+use workspace::Workspace;
+
+actions!(Toggle);
+
+pub fn init(cx: &mut AppContext) {
+    cx.observe_new_views(LanguagePicker::register).detach();
+}
+
+pub fn init(cx: &mut AppContext) {
+    Picker::<LanguageSelectorDelegate>::init(cx);
+    cx.add_action(toggle);
+}
+
+pub fn toggle(
+    workspace: &mut Workspace,
+    _: &Toggle,
+    cx: &mut ViewContext<Workspace>,
+) -> Option<()> {
+    let (_, buffer, _) = workspace
+        .active_item(cx)?
+        .act_as::<Editor>(cx)?
+        .read(cx)
+        .active_excerpt(cx)?;
+    workspace.toggle_modal(cx, |workspace, cx| {
+        let registry = workspace.app_state().languages.clone();
+        cx.add_view(|cx| {
+            Picker::new(
+                LanguageSelectorDelegate::new(buffer, workspace.project().clone(), registry),
+                cx,
+            )
+        })
+    });
+    Some(())
+}
+
+pub struct LanguageSelectorDelegate {
+    buffer: ModelHandle<Buffer>,
+    project: ModelHandle<Project>,
+    language_registry: Arc<LanguageRegistry>,
+    candidates: Vec<StringMatchCandidate>,
+    matches: Vec<StringMatch>,
+    selected_index: usize,
+}
+
+impl LanguageSelectorDelegate {
+    fn new(
+        buffer: ModelHandle<Buffer>,
+        project: ModelHandle<Project>,
+        language_registry: Arc<LanguageRegistry>,
+    ) -> Self {
+        let candidates = language_registry
+            .language_names()
+            .into_iter()
+            .enumerate()
+            .map(|(candidate_id, name)| StringMatchCandidate::new(candidate_id, name))
+            .collect::<Vec<_>>();
+        let mut matches = candidates
+            .iter()
+            .map(|candidate| StringMatch {
+                candidate_id: candidate.id,
+                score: 0.,
+                positions: Default::default(),
+                string: candidate.string.clone(),
+            })
+            .collect::<Vec<_>>();
+        matches.sort_unstable_by(|mat1, mat2| mat1.string.cmp(&mat2.string));
+
+        Self {
+            buffer,
+            project,
+            language_registry,
+            candidates,
+            matches,
+            selected_index: 0,
+        }
+    }
+}
+
+impl PickerDelegate for LanguageSelectorDelegate {
+    fn placeholder_text(&self) -> Arc<str> {
+        "Select a language...".into()
+    }
+
+    fn match_count(&self) -> usize {
+        self.matches.len()
+    }
+
+    fn confirm(&mut self, _: bool, cx: &mut ViewContext<Picker<Self>>) {
+        if let Some(mat) = self.matches.get(self.selected_index) {
+            let language_name = &self.candidates[mat.candidate_id].string;
+            let language = self.language_registry.language_for_name(language_name);
+            let project = self.project.downgrade();
+            let buffer = self.buffer.downgrade();
+            cx.spawn(|_, mut cx| async move {
+                let language = language.await?;
+                let project = project
+                    .upgrade(&cx)
+                    .ok_or_else(|| anyhow!("project was dropped"))?;
+                let buffer = buffer
+                    .upgrade(&cx)
+                    .ok_or_else(|| anyhow!("buffer was dropped"))?;
+                project.update(&mut cx, |project, cx| {
+                    project.set_language_for_buffer(&buffer, language, cx);
+                });
+                anyhow::Ok(())
+            })
+            .detach_and_log_err(cx);
+        }
+
+        cx.emit(PickerEvent::Dismiss);
+    }
+
+    fn dismissed(&mut self, _cx: &mut ViewContext<Picker<Self>>) {}
+
+    fn selected_index(&self) -> usize {
+        self.selected_index
+    }
+
+    fn set_selected_index(&mut self, ix: usize, _: &mut ViewContext<Picker<Self>>) {
+        self.selected_index = ix;
+    }
+
+    fn update_matches(
+        &mut self,
+        query: String,
+        cx: &mut ViewContext<Picker<Self>>,
+    ) -> gpui::Task<()> {
+        let background = cx.background().clone();
+        let candidates = self.candidates.clone();
+        cx.spawn(|this, mut cx| async move {
+            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,
+                    100,
+                    &Default::default(),
+                    background,
+                )
+                .await
+            };
+
+            this.update(&mut cx, |this, cx| {
+                let delegate = this.delegate_mut();
+                delegate.matches = matches;
+                delegate.selected_index = delegate
+                    .selected_index
+                    .min(delegate.matches.len().saturating_sub(1));
+                cx.notify();
+            })
+            .log_err();
+        })
+    }
+
+    fn render_match(
+        &self,
+        ix: usize,
+        mouse_state: &mut MouseState,
+        selected: bool,
+        cx: &AppContext,
+    ) -> AnyElement<Picker<Self>> {
+        let theme = theme::current(cx);
+        let mat = &self.matches[ix];
+        let style = theme.picker.item.in_state(selected).style_for(mouse_state);
+        let buffer_language_name = self.buffer.read(cx).language().map(|l| l.name());
+        let mut label = mat.string.clone();
+        if buffer_language_name.as_deref() == Some(mat.string.as_str()) {
+            label.push_str(" (current)");
+        }
+
+        Label::new(label, style.label.clone())
+            .with_highlights(mat.positions.clone())
+            .contained()
+            .with_style(style.container)
+            .into_any()
+    }
+}

crates/zed2/Cargo.toml

@@ -44,7 +44,7 @@ gpui = { package = "gpui2", path = "../gpui2" }
 install_cli = { package = "install_cli2", path = "../install_cli2" }
 journal = { package = "journal2", path = "../journal2" }
 language = { package = "language2", path = "../language2" }
-# language_selector = { path = "../language_selector" }
+language_selector = { package = "language_selector2", path = "../language_selector2" }
 lsp = { package = "lsp2", path = "../lsp2" }
 menu = { package = "menu2", path = "../menu2" }
 # language_tools = { path = "../language_tools" }

crates/zed2/src/zed2.rs

@@ -142,8 +142,8 @@ pub fn initialize_workspace(app_state: Arc<AppState>, cx: &mut AppContext) {
             cx.build_view(|cx| diagnostics::items::DiagnosticIndicator::new(workspace, cx));
         let activity_indicator =
             activity_indicator::ActivityIndicator::new(workspace, app_state.languages.clone(), cx);
-        //     let active_buffer_language =
+            let active_buffer_language =
-        //         cx.add_view(|_| language_selector::ActiveBufferLanguage::new(workspace));
+                cx.add_view(|_| language_selector::ActiveBufferLanguage::new(workspace));
         //     let vim_mode_indicator = cx.add_view(|cx| vim::ModeIndicator::new(cx));
         //     let feedback_button = cx.add_view(|_| {
         //         feedback::deploy_feedback_button::DeployFeedbackButton::new(workspace)
@@ -155,7 +155,7 @@ pub fn initialize_workspace(app_state: Arc<AppState>, cx: &mut AppContext) {
 
             // status_bar.add_right_item(feedback_button, cx);
             // status_bar.add_right_item(copilot, cx);
-            // status_bar.add_right_item(active_buffer_language, cx);
+        status_bar.add_right_item(active_buffer_language, cx);
             // status_bar.add_right_item(vim_mode_indicator, cx);
             status_bar.add_right_item(cursor_position, cx);
         });