chore: refactorings for more code reorganizing

src/app.rs

@@ -24,7 +24,7 @@ use crate::engine::ChatTurn;
 #[cfg(target_os = "macos")]
 use crate::metrics::WorkSource;
 use crate::metrics::{KvCacheReport, Metrics, MetricsSnapshot};
-use crate::model::{self, DownloadOutcome, DownloadProgress, ManagedArtifactId, ModelChoice};
+use crate::model::{DownloadOutcome, DownloadProgress, ManagedArtifactId, ModelChoice};
 #[cfg(target_os = "macos")]
 use crate::runtime::{
     ActiveGeneration, CheckpointTarget, CompactionInput, GenerationEvent, GenerationService,
@@ -950,6 +950,10 @@ impl App {
             Ok(message) => message,
             Err(task) => return task,
         };
+        let message = match self.update_model_manager_message(message) {
+            Ok(message) => message,
+            Err(task) => return task,
+        };
         match message {
             Message::Noop => {
                 #[cfg(target_os = "macos")]
@@ -973,7 +977,6 @@ impl App {
                 }
             }
             Message::ScrollPreferences(section) => return scroll_preferences_to(section),
-            Message::OpenModelManager => return self.open_model_manager(),
             Message::OpenHelp => return self.open_help(),
             Message::HelpOpened(id) => {
                 if self.help_window == Some(id) {
@@ -1012,11 +1015,6 @@ impl App {
                     self.error = Some(format!("Could not export the chat: {error}"));
                 }
             }
-            Message::ModelManagerOpened(id) => {
-                if self.model_manager_window == Some(id) {
-                    return window::gain_focus(id);
-                }
-            }
             Message::WindowOpened(id) => {
                 if id == self.main_window {
                     self.refresh_git_state();
@@ -1144,34 +1142,6 @@ impl App {
                 self.sync_native_menu();
             }
             Message::MetricsTick => self.sample_metrics(),
-            Message::DownloadArtifact(artifact) => {
-                self.start_model_operation(artifact, ModelOperation::Download)
-            }
-            Message::ValidateArtifact(artifact) => {
-                self.start_model_operation(artifact, ModelOperation::Validate)
-            }
-            Message::DeleteArtifact(artifact) => self.pending_model_delete = Some(artifact),
-            Message::ConfirmDeleteArtifact => {
-                if let Some(artifact) = self.pending_model_delete.take() {
-                    match model::delete_managed_artifact(artifact, &models_path()) {
-                        Ok(()) => {
-                            self.model_download = ModelDownload::Idle;
-                            self.error = None;
-                        }
-                        Err(error) => {
-                            self.error = Some(format!("Could not delete {artifact}: {error}"))
-                        }
-                    }
-                }
-            }
-            Message::CancelDeleteArtifact => self.pending_model_delete = None,
-            Message::StopModelDownload => {
-                if let ModelDownload::Active(download) = &mut self.model_download {
-                    download.stopping = true;
-                    download.cancel.store(true, Ordering::Relaxed);
-                }
-            }
-            Message::DownloadProgressTick => self.update_download_progress(),
             Message::ComposerAction(action) => self.composer.perform(action),
             Message::TranscriptAction(index, action) => {
                 if !action.is_edit()
@@ -1833,7 +1803,7 @@ impl App {
                     }
                 }
             }
-            _ => unreachable!("preference messages are dispatched before the main update"),
+            _ => unreachable!("domain messages are dispatched before the main update"),
         }
         Task::none()
     }