M4: browser UI (navigation, sort, selection, dialogs, permission prompts, platform delete)

app/src/main/java/de/softwareapp_hb/filemanager/FileManagerApplication.kt

@@ -1,13 +1,37 @@
 package de.softwareapp_hb.filemanager
 
 import android.app.Application
+import de.softwareapp_hb.filemanager.data.DeleteRequestFactory
+import de.softwareapp_hb.filemanager.data.MediaStoreDeleter
+import de.softwareapp_hb.filemanager.data.StorageProvider
+import de.softwareapp_hb.filemanager.domain.OperationNotifier
+import de.softwareapp_hb.filemanager.service.ServiceOperationNotifier
 
 /**
- * Application entry point.
+ * Application entry point and the app's tiny object graph.
  *
- * Deliberately lightweight: the app has no dependency-injection graph, no analytics
- * and no network access. From M2 this will own the browser/operations controller so
- * that navigation and long-running file operations survive activity recreation; the
- * storage layer and preference stores are opened lazily where they are used.
+ * There is no dependency-injection framework here on purpose: three long-lived
+ * collaborators are built once and handed to the one ViewModel that needs them. Nothing
+ * holds a reference to an Activity, so none of this leaks.
  */
-class FileManagerApplication : Application()
+class FileManagerApplication : Application() {
+
+    /** Where files live and which backend is in effect. */
+    lateinit var storage: StorageProvider
+        private set
+
+    /** Keeps the foreground service in step with a running operation. */
+    lateinit var notifier: OperationNotifier
+        private set
+
+    /** Builds the platform's own delete confirmation, when it can. */
+    lateinit var deleteRequests: DeleteRequestFactory
+        private set
+
+    override fun onCreate() {
+        super.onCreate()
+        storage = StorageProvider(this)
+        notifier = ServiceOperationNotifier(this)
+        deleteRequests = MediaStoreDeleter(this).factory()
+    }
+}