Merge pull request #2189 from zed-industries/labeled-tasks

Labeled Tasks

crates/activity_indicator/src/activity_indicator.rs

@@ -33,6 +33,19 @@ struct LspStatus {
     status: LanguageServerBinaryStatus,
 }
 
+struct PendingWork<'a> {
+    language_server_name: &'a str,
+    progress_token: &'a str,
+    progress: &'a LanguageServerProgress,
+}
+
+#[derive(Default)]
+struct Content {
+    icon: Option<&'static str>,
+    message: String,
+    action: Option<Box<dyn Action>>,
+}
+
 pub fn init(cx: &mut MutableAppContext) {
     cx.add_action(ActivityIndicator::show_error_message);
     cx.add_action(ActivityIndicator::dismiss_error_message);
@@ -69,6 +82,8 @@ impl ActivityIndicator {
             if let Some(auto_updater) = auto_updater.as_ref() {
                 cx.observe(auto_updater, |_, _, cx| cx.notify()).detach();
             }
+            cx.observe_active_labeled_tasks(|_, cx| cx.notify())
+                .detach();
 
             Self {
                 statuses: Default::default(),
@@ -130,7 +145,7 @@ impl ActivityIndicator {
     fn pending_language_server_work<'a>(
         &self,
         cx: &'a AppContext,
-    ) -> impl Iterator<Item = (&'a str, &'a str, &'a LanguageServerProgress)> {
+    ) -> impl Iterator<Item = PendingWork<'a>> {
         self.project
             .read(cx)
             .language_server_statuses()
@@ -142,23 +157,29 @@ impl ActivityIndicator {
                     let mut pending_work = status
                         .pending_work
                         .iter()
-                        .map(|(token, progress)| (status.name.as_str(), token.as_str(), progress))
+                        .map(|(token, progress)| PendingWork {
+                            language_server_name: status.name.as_str(),
+                            progress_token: token.as_str(),
+                            progress,
+                        })
                         .collect::<SmallVec<[_; 4]>>();
-                    pending_work.sort_by_key(|(_, _, progress)| Reverse(progress.last_update_at));
+                    pending_work.sort_by_key(|work| Reverse(work.progress.last_update_at));
                     Some(pending_work)
                 }
             })
             .flatten()
     }
 
-    fn content_to_render(
+    fn content_to_render(&mut self, cx: &mut RenderContext<Self>) -> Content {
-        &mut self,
-        cx: &mut RenderContext<Self>,
-    ) -> (Option<&'static str>, String, Option<Box<dyn Action>>) {
         // Show any language server has pending activity.
         let mut pending_work = self.pending_language_server_work(cx);
-        if let Some((lang_server_name, progress_token, progress)) = pending_work.next() {
+        if let Some(PendingWork {
-            let mut message = lang_server_name.to_string();
+            language_server_name,
+            progress_token,
+            progress,
+        }) = pending_work.next()
+        {
+            let mut message = language_server_name.to_string();
 
             message.push_str(": ");
             if let Some(progress_message) = progress.message.as_ref() {
@@ -176,7 +197,11 @@ impl ActivityIndicator {
                 write!(&mut message, " + {} more", additional_work_count).unwrap();
             }
 
-            return (None, message, None);
+            return Content {
+                icon: None,
+                message,
+                action: None,
+            };
         }
 
         // Show any language server installation info.
@@ -199,19 +224,19 @@ impl ActivityIndicator {
         }
 
         if !downloading.is_empty() {
-            return (
+            return Content {
-                Some(DOWNLOAD_ICON),
+                icon: Some(DOWNLOAD_ICON),
-                format!(
+                message: format!(
                     "Downloading {} language server{}...",
                     downloading.join(", "),
                     if downloading.len() > 1 { "s" } else { "" }
                 ),
-                None,
+                action: None,
-            );
+            };
         } else if !checking_for_update.is_empty() {
-            return (
+            return Content {
-                Some(DOWNLOAD_ICON),
+                icon: Some(DOWNLOAD_ICON),
-                format!(
+                message: format!(
                     "Checking for updates to {} language server{}...",
                     checking_for_update.join(", "),
                     if checking_for_update.len() > 1 {
@@ -220,54 +245,62 @@ impl ActivityIndicator {
                         ""
                     }
                 ),
-                None,
+                action: None,
-            );
+            };
         } else if !failed.is_empty() {
-            return (
+            return Content {
-                Some(WARNING_ICON),
+                icon: Some(WARNING_ICON),
-                format!(
+                message: format!(
                     "Failed to download {} language server{}. Click to show error.",
                     failed.join(", "),
                     if failed.len() > 1 { "s" } else { "" }
                 ),
-                Some(Box::new(ShowErrorMessage)),
+                action: Some(Box::new(ShowErrorMessage)),
-            );
+            };
         }
 
         // Show any application auto-update info.
         if let Some(updater) = &self.auto_updater {
-            match &updater.read(cx).status() {
+            return match &updater.read(cx).status() {
-                AutoUpdateStatus::Checking => (
+                AutoUpdateStatus::Checking => Content {
-                    Some(DOWNLOAD_ICON),
+                    icon: Some(DOWNLOAD_ICON),
-                    "Checking for Zed updates…".to_string(),
+                    message: "Checking for Zed updates…".to_string(),
-                    None,
+                    action: None,
-                ),
+                },
-                AutoUpdateStatus::Downloading => (
+                AutoUpdateStatus::Downloading => Content {
-                    Some(DOWNLOAD_ICON),
+                    icon: Some(DOWNLOAD_ICON),
-                    "Downloading Zed update…".to_string(),
+                    message: "Downloading Zed update…".to_string(),
-                    None,
+                    action: None,
-                ),
+                },
-                AutoUpdateStatus::Installing => (
+                AutoUpdateStatus::Installing => Content {
-                    Some(DOWNLOAD_ICON),
+                    icon: Some(DOWNLOAD_ICON),
-                    "Installing Zed update…".to_string(),
+                    message: "Installing Zed update…".to_string(),
-                    None,
+                    action: None,
-                ),
+                },
-                AutoUpdateStatus::Updated => (
+                AutoUpdateStatus::Updated => Content {
-                    None,
+                    icon: None,
-                    "Click to restart and update Zed".to_string(),
+                    message: "Click to restart and update Zed".to_string(),
-                    Some(Box::new(workspace::Restart)),
+                    action: Some(Box::new(workspace::Restart)),
-                ),
+                },
-                AutoUpdateStatus::Errored => (
+                AutoUpdateStatus::Errored => Content {
-                    Some(WARNING_ICON),
+                    icon: Some(WARNING_ICON),
-                    "Auto update failed".to_string(),
+                    message: "Auto update failed".to_string(),
-                    Some(Box::new(DismissErrorMessage)),
+                    action: Some(Box::new(DismissErrorMessage)),
-                ),
+                },
                 AutoUpdateStatus::Idle => Default::default(),
+            };
         }
-        } else {
+
+        if let Some(most_recent_active_task) = cx.active_labeled_tasks().last() {
+            return Content {
+                icon: None,
+                message: most_recent_active_task.to_string(),
+                action: None,
+            };
+        }
+
         Default::default()
     }
-    }
 }
 
 impl Entity for ActivityIndicator {
@@ -280,7 +313,11 @@ impl View for ActivityIndicator {
     }
 
     fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
-        let (icon, message, action) = self.content_to_render(cx);
+        let Content {
+            icon,
+            message,
+            action,
+        } = self.content_to_render(cx);
 
         let mut element = MouseEventHandler::<Self>::new(0, cx, |state, cx| {
             let theme = &cx

crates/editor/src/editor.rs

@@ -5071,7 +5071,7 @@ impl Editor {
             GotoDefinitionKind::Type => project.type_definition(&buffer, head, cx),
         });
 
-        cx.spawn(|workspace, mut cx| async move {
+        cx.spawn_labeled("Fetching Definition...", |workspace, mut cx| async move {
             let definitions = definitions.await?;
             workspace.update(&mut cx, |workspace, cx| {
                 Editor::navigate_to_definitions(workspace, editor_handle, definitions, cx);
@@ -5151,7 +5151,9 @@ impl Editor {
 
         let project = workspace.project().clone();
         let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
-        Some(cx.spawn(|workspace, mut cx| async move {
+        Some(cx.spawn_labeled(
+            "Finding All References...",
+            |workspace, mut cx| async move {
                 let locations = references.await?;
                 if locations.is_empty() {
                     return Ok(());
@@ -5171,11 +5173,14 @@ impl Editor {
                             )
                         })
                         .unwrap();
-                Self::open_locations_in_multibuffer(workspace, locations, replica_id, title, cx);
+                    Self::open_locations_in_multibuffer(
+                        workspace, locations, replica_id, title, cx,
+                    );
                 });
 
                 Ok(())
-        }))
+            },
+        ))
     }
 
     /// Opens a multibuffer with the given project locations in it

crates/gpui/src/app.rs

@@ -31,7 +31,7 @@ use uuid::Uuid;
 
 pub use action::*;
 use callback_collection::CallbackCollection;
-use collections::{hash_map::Entry, HashMap, HashSet, VecDeque};
+use collections::{hash_map::Entry, BTreeMap, HashMap, HashSet, VecDeque};
 pub use menu::*;
 use platform::Event;
 #[cfg(any(test, feature = "test-support"))]
@@ -474,6 +474,7 @@ type WindowBoundsCallback = Box<dyn FnMut(WindowBounds, Uuid, &mut MutableAppCon
 type KeystrokeCallback = Box<
     dyn FnMut(&Keystroke, &MatchResult, Option<&Box<dyn Action>>, &mut MutableAppContext) -> bool,
 >;
+type ActiveLabeledTasksCallback = Box<dyn FnMut(&mut MutableAppContext) -> bool>;
 type DeserializeActionCallback = fn(json: &str) -> anyhow::Result<Box<dyn Action>>;
 type WindowShouldCloseSubscriptionCallback = Box<dyn FnMut(&mut MutableAppContext) -> bool>;
 
@@ -503,6 +504,7 @@ pub struct MutableAppContext {
     window_fullscreen_observations: CallbackCollection<usize, WindowFullscreenCallback>,
     window_bounds_observations: CallbackCollection<usize, WindowBoundsCallback>,
     keystroke_observations: CallbackCollection<usize, KeystrokeCallback>,
+    active_labeled_task_observations: CallbackCollection<(), ActiveLabeledTasksCallback>,
 
     #[allow(clippy::type_complexity)]
     presenters_and_platform_windows:
@@ -514,6 +516,8 @@ pub struct MutableAppContext {
     pending_flushes: usize,
     flushing_effects: bool,
     halt_action_dispatch: bool,
+    next_labeled_task_id: usize,
+    active_labeled_tasks: BTreeMap<usize, &'static str>,
 }
 
 impl MutableAppContext {
@@ -562,6 +566,7 @@ impl MutableAppContext {
             window_bounds_observations: Default::default(),
             keystroke_observations: Default::default(),
             action_dispatch_observations: Default::default(),
+            active_labeled_task_observations: Default::default(),
             presenters_and_platform_windows: Default::default(),
             foreground,
             pending_effects: VecDeque::new(),
@@ -570,6 +575,8 @@ impl MutableAppContext {
             pending_flushes: 0,
             flushing_effects: false,
             halt_action_dispatch: false,
+            next_labeled_task_id: 0,
+            active_labeled_tasks: Default::default(),
         }
     }
 
@@ -794,6 +801,12 @@ impl MutableAppContext {
         window.screen().display_uuid()
     }
 
+    pub fn active_labeled_tasks<'a>(
+        &'a self,
+    ) -> impl DoubleEndedIterator<Item = &'static str> + 'a {
+        self.active_labeled_tasks.values().cloned()
+    }
+
     pub fn render_view(&mut self, params: RenderParams) -> Result<ElementBox> {
         let window_id = params.window_id;
         let view_id = params.view_id;
@@ -1160,6 +1173,19 @@ impl MutableAppContext {
         )
     }
 
+    pub fn observe_active_labeled_tasks<F>(&mut self, callback: F) -> Subscription
+    where
+        F: 'static + FnMut(&mut MutableAppContext) -> bool,
+    {
+        let subscription_id = post_inc(&mut self.next_subscription_id);
+        self.active_labeled_task_observations
+            .add_callback((), subscription_id, Box::new(callback));
+        Subscription::ActiveLabeledTasksObservation(
+            self.active_labeled_task_observations
+                .subscribe((), subscription_id),
+        )
+    }
+
     pub fn defer(&mut self, callback: impl 'static + FnOnce(&mut MutableAppContext)) {
         self.pending_effects.push_back(Effect::Deferred {
             callback: Box::new(callback),
@@ -2042,6 +2068,17 @@ impl MutableAppContext {
                             handled_by,
                             result,
                         } => self.handle_keystroke_effect(window_id, keystroke, handled_by, result),
+                        Effect::ActiveLabeledTasksChanged => {
+                            self.handle_active_labeled_tasks_changed_effect()
+                        }
+                        Effect::ActiveLabeledTasksObservation {
+                            subscription_id,
+                            callback,
+                        } => self.active_labeled_task_observations.add_callback(
+                            (),
+                            subscription_id,
+                            callback,
+                        ),
                     }
                     self.pending_notifications.clear();
                     self.remove_dropped_entities();
@@ -2449,26 +2486,68 @@ impl MutableAppContext {
         }
     }
 
+    fn handle_active_labeled_tasks_changed_effect(&mut self) {
+        self.active_labeled_task_observations
+            .clone()
+            .emit((), self, move |callback, this| {
+                callback(this);
+                true
+            });
+    }
+
     pub fn focus(&mut self, window_id: usize, view_id: Option<usize>) {
         self.pending_effects
             .push_back(Effect::Focus { window_id, view_id });
     }
 
-    pub fn spawn<F, Fut, T>(&self, f: F) -> Task<T>
+    fn spawn_internal<F, Fut, T>(&mut self, task_name: Option<&'static str>, f: F) -> Task<T>
     where
         F: FnOnce(AsyncAppContext) -> Fut,
         Fut: 'static + Future<Output = T>,
         T: 'static,
     {
+        let label_id = task_name.map(|task_name| {
+            let id = post_inc(&mut self.next_labeled_task_id);
+            self.active_labeled_tasks.insert(id, task_name);
+            self.pending_effects
+                .push_back(Effect::ActiveLabeledTasksChanged);
+            id
+        });
+
         let future = f(self.to_async());
         let cx = self.to_async();
         self.foreground.spawn(async move {
             let result = future.await;
-            cx.0.borrow_mut().flush_effects();
+            let mut cx = cx.0.borrow_mut();
+
+            if let Some(completed_label_id) = label_id {
+                cx.active_labeled_tasks.remove(&completed_label_id);
+                cx.pending_effects
+                    .push_back(Effect::ActiveLabeledTasksChanged);
+            }
+            cx.flush_effects();
             result
         })
     }
 
+    pub fn spawn_labeled<F, Fut, T>(&mut self, task_name: &'static str, f: F) -> Task<T>
+    where
+        F: FnOnce(AsyncAppContext) -> Fut,
+        Fut: 'static + Future<Output = T>,
+        T: 'static,
+    {
+        self.spawn_internal(Some(task_name), f)
+    }
+
+    pub fn spawn<F, Fut, T>(&mut self, f: F) -> Task<T>
+    where
+        F: FnOnce(AsyncAppContext) -> Fut,
+        Fut: 'static + Future<Output = T>,
+        T: 'static,
+    {
+        self.spawn_internal(None, f)
+    }
+
     pub fn to_async(&self) -> AsyncAppContext {
         AsyncAppContext(self.weak_self.as_ref().unwrap().upgrade().unwrap())
     }
@@ -2907,6 +2986,11 @@ pub enum Effect {
         window_id: usize,
         callback: WindowShouldCloseSubscriptionCallback,
     },
+    ActiveLabeledTasksChanged,
+    ActiveLabeledTasksObservation {
+        subscription_id: usize,
+        callback: ActiveLabeledTasksCallback,
+    },
 }
 
 impl Debug for Effect {
@@ -3066,6 +3150,16 @@ impl Debug for Effect {
                 )
                 .field("result", result)
                 .finish(),
+            Effect::ActiveLabeledTasksChanged => {
+                f.debug_struct("Effect::ActiveLabeledTasksChanged").finish()
+            }
+            Effect::ActiveLabeledTasksObservation {
+                subscription_id,
+                callback: _,
+            } => f
+                .debug_struct("Effect::ActiveLabeledTasksObservation")
+                .field("subscription_id", subscription_id)
+                .finish(),
         }
     }
 }
@@ -3480,7 +3574,7 @@ impl<'a, T: Entity> ModelContext<'a, T> {
         WeakModelHandle::new(self.model_id)
     }
 
-    pub fn spawn<F, Fut, S>(&self, f: F) -> Task<S>
+    pub fn spawn<F, Fut, S>(&mut self, f: F) -> Task<S>
     where
         F: FnOnce(ModelHandle<T>, AsyncAppContext) -> Fut,
         Fut: 'static + Future<Output = S>,
@@ -3490,7 +3584,7 @@ impl<'a, T: Entity> ModelContext<'a, T> {
         self.app.spawn(|cx| f(handle, cx))
     }
 
-    pub fn spawn_weak<F, Fut, S>(&self, f: F) -> Task<S>
+    pub fn spawn_weak<F, Fut, S>(&mut self, f: F) -> Task<S>
     where
         F: FnOnce(WeakModelHandle<T>, AsyncAppContext) -> Fut,
         Fut: 'static + Future<Output = S>,
@@ -3947,6 +4041,23 @@ impl<'a, T: View> ViewContext<'a, T> {
             })
     }
 
+    pub fn observe_active_labeled_tasks<F>(&mut self, mut callback: F) -> Subscription
+    where
+        F: 'static + FnMut(&mut T, &mut ViewContext<T>),
+    {
+        let observer = self.weak_handle();
+        self.app.observe_active_labeled_tasks(move |cx| {
+            if let Some(observer) = observer.upgrade(cx) {
+                observer.update(cx, |observer, cx| {
+                    callback(observer, cx);
+                });
+                true
+            } else {
+                false
+            }
+        })
+    }
+
     pub fn emit(&mut self, payload: T::Event) {
         self.app.pending_effects.push_back(Effect::Event {
             entity_id: self.view_id,
@@ -3993,7 +4104,17 @@ impl<'a, T: View> ViewContext<'a, T> {
         self.app.halt_action_dispatch = false;
     }
 
-    pub fn spawn<F, Fut, S>(&self, f: F) -> Task<S>
+    pub fn spawn_labeled<F, Fut, S>(&mut self, task_label: &'static str, f: F) -> Task<S>
+    where
+        F: FnOnce(ViewHandle<T>, AsyncAppContext) -> Fut,
+        Fut: 'static + Future<Output = S>,
+        S: 'static,
+    {
+        let handle = self.handle();
+        self.app.spawn_labeled(task_label, |cx| f(handle, cx))
+    }
+
+    pub fn spawn<F, Fut, S>(&mut self, f: F) -> Task<S>
     where
         F: FnOnce(ViewHandle<T>, AsyncAppContext) -> Fut,
         Fut: 'static + Future<Output = S>,
@@ -4003,7 +4124,7 @@ impl<'a, T: View> ViewContext<'a, T> {
         self.app.spawn(|cx| f(handle, cx))
     }
 
-    pub fn spawn_weak<F, Fut, S>(&self, f: F) -> Task<S>
+    pub fn spawn_weak<F, Fut, S>(&mut self, f: F) -> Task<S>
     where
         F: FnOnce(WeakViewHandle<T>, AsyncAppContext) -> Fut,
         Fut: 'static + Future<Output = S>,
@@ -5121,6 +5242,9 @@ pub enum Subscription {
     KeystrokeObservation(callback_collection::Subscription<usize, KeystrokeCallback>),
     ReleaseObservation(callback_collection::Subscription<usize, ReleaseObservationCallback>),
     ActionObservation(callback_collection::Subscription<(), ActionObservationCallback>),
+    ActiveLabeledTasksObservation(
+        callback_collection::Subscription<(), ActiveLabeledTasksCallback>,
+    ),
 }
 
 impl Subscription {
@@ -5137,6 +5261,7 @@ impl Subscription {
             Subscription::KeystrokeObservation(subscription) => subscription.id(),
             Subscription::ReleaseObservation(subscription) => subscription.id(),
             Subscription::ActionObservation(subscription) => subscription.id(),
+            Subscription::ActiveLabeledTasksObservation(subscription) => subscription.id(),
         }
     }
 
@@ -5153,6 +5278,7 @@ impl Subscription {
             Subscription::WindowBoundsObservation(subscription) => subscription.detach(),
             Subscription::ReleaseObservation(subscription) => subscription.detach(),
             Subscription::ActionObservation(subscription) => subscription.detach(),
+            Subscription::ActiveLabeledTasksObservation(subscription) => subscription.detach(),
         }
     }
 }
@@ -5161,6 +5287,7 @@ impl Subscription {
 mod tests {
     use super::*;
     use crate::{actions, elements::*, impl_actions, MouseButton, MouseButtonEvent};
+    use postage::{sink::Sink, stream::Stream};
     use serde::Deserialize;
     use smol::future::poll_once;
     use std::{
@@ -6776,6 +6903,26 @@ mod tests {
         assert_eq!(presenter.borrow().rendered_views.len(), 1);
     }
 
+    #[crate::test(self)]
+    async fn test_labeled_tasks(cx: &mut TestAppContext) {
+        assert_eq!(None, cx.update(|cx| cx.active_labeled_tasks().next()));
+        let (mut sender, mut reciever) = postage::oneshot::channel::<()>();
+        let task = cx
+            .update(|cx| cx.spawn_labeled("Test Label", |_| async move { reciever.recv().await }));
+
+        assert_eq!(
+            Some("Test Label"),
+            cx.update(|cx| cx.active_labeled_tasks().next())
+        );
+        sender
+            .send(())
+            .await
+            .expect("Could not send message to complete task");
+        task.await;
+
+        assert_eq!(None, cx.update(|cx| cx.active_labeled_tasks().next()));
+    }
+
     #[crate::test(self)]
     async fn test_window_activation(cx: &mut TestAppContext) {
         struct View(&'static str);

crates/gpui/src/keymap_matcher.rs

@@ -227,7 +227,7 @@ mod tests {
 
     #[test]
     fn test_push_keystroke() -> Result<()> {
-        actions!(test, [B, AB, C, D, DA]);
+        actions!(test, [B, AB, C, D, DA, E, EF]);
 
         let mut context1 = KeymapContext::default();
         context1.set.insert("1".into());
@@ -286,6 +286,7 @@ mod tests {
             matcher.push_keystroke(Keystroke::parse("d")?, dispatch_path.clone()),
             MatchResult::Matches(vec![(2, Box::new(D)), (1, Box::new(D))]),
         );
+
         // If none of the d action handlers consume the binding, a pending
         // binding may then be used
         assert_eq!(