Add workspace::ToggleEditPrediction for toggling inline completions globally (#35418)

Closes: https://github.com/zed-industries/zed/issues/23704

Existing action is `editor::ToggleEditPrediction` ("This Buffer").
This action is `workspace::ToggleEditPredction` ("All Files").

You can add a custom keybind wi shortcut with:
```json
  { "context": "Workspace", "bindings": { "ctrl-alt-cmd-e": "workspace::ToggleEditPrediction" } },
```

<img width="212" height="439" alt="Screenshot 2025-07-31 at 12 52 19"
src="https://github.com/user-attachments/assets/15879daa-7d4d-4308-ab2b-5e78507f2fa5"
/>


Release Notes:

- Added `workspace::ToggleEditPrediction` action for toggling
`show_edit_predictions` in settings (Edit Predictions menu -> All
Files).

crates/edit_prediction_button/src/edit_prediction_button.rs

@@ -2,11 +2,7 @@ use anyhow::Result;
 use client::{UserStore, zed_urls};
 use cloud_llm_client::UsageLimit;
 use copilot::{Copilot, Status};
-use editor::{
-    Editor, SelectionEffects,
-    actions::{ShowEditPrediction, ToggleEditPrediction},
-    scroll::Autoscroll,
-};
+use editor::{Editor, SelectionEffects, actions::ShowEditPrediction, scroll::Autoscroll};
 use feature_flags::{FeatureFlagAppExt, PredictEditsRateCompletionsFeatureFlag};
 use fs::Fs;
 use gpui::{
@@ -441,9 +437,13 @@ impl EditPredictionButton {
         if let Some(editor_focus_handle) = self.editor_focus_handle.clone() {
             let entry = ContextMenuEntry::new("This Buffer")
                 .toggleable(IconPosition::Start, self.editor_show_predictions)
-                .action(Box::new(ToggleEditPrediction))
+                .action(Box::new(editor::actions::ToggleEditPrediction))
                 .handler(move |window, cx| {
-                    editor_focus_handle.dispatch_action(&ToggleEditPrediction, window, cx);
+                    editor_focus_handle.dispatch_action(
+                        &editor::actions::ToggleEditPrediction,
+                        window,
+                        cx,
+                    );
                 });
 
             match language_state.clone() {
@@ -478,10 +478,13 @@ impl EditPredictionButton {
         let settings = AllLanguageSettings::get_global(cx);
 
         let globally_enabled = settings.show_edit_predictions(None, cx);
-        menu = menu.toggleable_entry("All Files", globally_enabled, IconPosition::Start, None, {
-            let fs = fs.clone();
-            move |_, cx| toggle_edit_predictions_globally(fs.clone(), cx)
-        });
+        let entry = ContextMenuEntry::new("All Files")
+            .toggleable(IconPosition::Start, globally_enabled)
+            .action(workspace::ToggleEditPrediction.boxed_clone())
+            .handler(|window, cx| {
+                window.dispatch_action(workspace::ToggleEditPrediction.boxed_clone(), cx)
+            });
+        menu = menu.item(entry);
 
         let provider = settings.edit_predictions.provider;
         let current_mode = settings.edit_predictions_mode();
@@ -943,13 +946,6 @@ async fn open_disabled_globs_setting_in_editor(
     anyhow::Ok(())
 }
 
-fn toggle_edit_predictions_globally(fs: Arc<dyn Fs>, cx: &mut App) {
-    let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
-    update_settings_file::<AllLanguageSettings>(fs, cx, move |file, _| {
-        file.defaults.show_edit_predictions = Some(!show_edit_predictions)
-    });
-}
-
 fn set_completion_provider(fs: Arc<dyn Fs>, cx: &mut App, provider: EditPredictionProvider) {
     update_settings_file::<AllLanguageSettings>(fs, cx, move |file, _| {
         file.features

crates/workspace/src/workspace.rs

@@ -48,7 +48,10 @@ pub use item::{
     ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
 };
 use itertools::Itertools;
-use language::{Buffer, LanguageRegistry, Rope};
+use language::{
+    Buffer, LanguageRegistry, Rope,
+    language_settings::{AllLanguageSettings, all_language_settings},
+};
 pub use modal_layer::*;
 use node_runtime::NodeRuntime;
 use notifications::{
@@ -74,7 +77,7 @@ use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIde
 use schemars::JsonSchema;
 use serde::Deserialize;
 use session::AppSession;
-use settings::Settings;
+use settings::{Settings, update_settings_file};
 use shared_screen::SharedScreen;
 use sqlez::{
     bindable::{Bind, Column, StaticColumnCount},
@@ -233,6 +236,8 @@ actions!(
         ToggleBottomDock,
         /// Toggles centered layout mode.
         ToggleCenteredLayout,
+        /// Toggles edit prediction feature globally for all files.
+        ToggleEditPrediction,
         /// Toggles the left dock.
         ToggleLeftDock,
         /// Toggles the right dock.
@@ -5546,6 +5551,7 @@ impl Workspace {
             .on_action(cx.listener(Self::activate_pane_at_index))
             .on_action(cx.listener(Self::move_item_to_pane_at_index))
             .on_action(cx.listener(Self::move_focused_panel_to_next_position))
+            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
             .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
                 let pane = workspace.active_pane().clone();
                 workspace.unfollow_in_pane(&pane, window, cx);
@@ -5977,6 +5983,19 @@ impl Workspace {
             }
         });
     }
+
+    fn toggle_edit_predictions_all_files(
+        &mut self,
+        _: &ToggleEditPrediction,
+        _window: &mut Window,
+        cx: &mut Context<Self>,
+    ) {
+        let fs = self.project().read(cx).fs().clone();
+        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
+        update_settings_file::<AllLanguageSettings>(fs, cx, move |file, _| {
+            file.defaults.show_edit_predictions = Some(!show_edit_predictions)
+        });
+    }
 }
 
 fn leader_border_for_pane(