Add Code Actions to the Toolbar (#31236)

Closes issue #31120.


https://github.com/user-attachments/assets/a4b3c86d-7358-49ac-b8d9-e9af50daf671

Release Notes:

- Added a code actions icon to the toolbar. This icon can be disabled by
setting `toolbar.code_actions` to `false`.

crates/editor/src/editor.rs

@@ -15,7 +15,7 @@
 pub mod actions;
 mod blink_manager;
 mod clangd_ext;
-mod code_context_menus;
+pub mod code_context_menus;
 pub mod display_map;
 mod editor_settings;
 mod editor_settings_controls;
@@ -777,7 +777,7 @@ impl RunnableTasks {
 }
 
 #[derive(Clone)]
-struct ResolvedTasks {
+pub struct ResolvedTasks {
     templates: SmallVec<[(TaskSourceKind, ResolvedTask); 1]>,
     position: Anchor,
 }
@@ -5375,7 +5375,7 @@ impl Editor {
         let quick_launch = action.quick_launch;
         let mut context_menu = self.context_menu.borrow_mut();
         if let Some(CodeContextMenu::CodeActions(code_actions)) = context_menu.as_ref() {
-            if code_actions.deployed_from_indicator == action.deployed_from_indicator {
+            if code_actions.deployed_from == action.deployed_from {
                 // Toggle if we're selecting the same one
                 *context_menu = None;
                 cx.notify();
@@ -5388,7 +5388,7 @@ impl Editor {
         }
         drop(context_menu);
         let snapshot = self.snapshot(window, cx);
-        let deployed_from_indicator = action.deployed_from_indicator;
+        let deployed_from = action.deployed_from.clone();
         let mut task = self.code_actions_task.take();
         let action = action.clone();
         cx.spawn_in(window, async move |editor, cx| {
@@ -5399,10 +5399,12 @@ impl Editor {
 
             let spawned_test_task = editor.update_in(cx, |editor, window, cx| {
                 if editor.focus_handle.is_focused(window) {
-                    let multibuffer_point = action
-                        .deployed_from_indicator
-                        .map(|row| DisplayPoint::new(row, 0).to_point(&snapshot))
-                        .unwrap_or_else(|| editor.selections.newest::<Point>(cx).head());
+                    let multibuffer_point = match &action.deployed_from {
+                        Some(CodeActionSource::Indicator(row)) => {
+                            DisplayPoint::new(*row, 0).to_point(&snapshot)
+                        }
+                        _ => editor.selections.newest::<Point>(cx).head(),
+                    };
                     let (buffer, buffer_row) = snapshot
                         .buffer_snapshot
                         .buffer_line_for_row(MultiBufferRow(multibuffer_point.row))
@@ -5526,7 +5528,7 @@ impl Editor {
                                     ),
                                     selected_item: Default::default(),
                                     scroll_handle: UniformListScrollHandle::default(),
-                                    deployed_from_indicator,
+                                    deployed_from,
                                 }));
                             if spawn_straight_away {
                                 if let Some(task) = editor.confirm_code_action(
@@ -5746,6 +5748,21 @@ impl Editor {
         self.refresh_code_actions(window, cx);
     }
 
+    pub fn code_actions_enabled(&self, cx: &App) -> bool {
+        !self.code_action_providers.is_empty()
+            && EditorSettings::get_global(cx).toolbar.code_actions
+    }
+
+    pub fn has_available_code_actions(&self) -> bool {
+        self.available_code_actions
+            .as_ref()
+            .is_some_and(|(_, actions)| !actions.is_empty())
+    }
+
+    pub fn context_menu(&self) -> &RefCell<Option<CodeContextMenu>> {
+        &self.context_menu
+    }
+
     fn refresh_code_actions(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Option<()> {
         let newest_selection = self.selections.newest_anchor().clone();
         let newest_selection_adjusted = self.selections.newest_adjusted(cx).clone();
@@ -7498,7 +7515,7 @@ impl Editor {
                 window.focus(&editor.focus_handle(cx));
                 editor.toggle_code_actions(
                     &ToggleCodeActions {
-                        deployed_from_indicator: Some(row),
+                        deployed_from: Some(CodeActionSource::Indicator(row)),
                         quick_launch,
                     },
                     window,
@@ -7519,7 +7536,7 @@ impl Editor {
                 .map_or(false, |menu| menu.visible())
     }
 
-    fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
+    pub fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
         self.context_menu
             .borrow()
             .as_ref()
@@ -8538,7 +8555,7 @@ impl Editor {
         }
     }
 
-    fn render_context_menu(
+    pub fn render_context_menu(
         &self,
         style: &EditorStyle,
         max_height_in_lines: u32,