listen event onDetermingFilename when extension boots

Author: leoding86

src/background/Application.js

@@ -85,6 +85,12 @@ class Application {
      * Get settings before doing anything else.
      */
     this.settings = await settingService.getSettings();
+
+    /**
+     * Initialize DownloadService here to ensure the event onDetermingFilename has been listened
+     * when extension boots, otherwise it will occure browser 'save as' delay issue.
+     */
+    this.getService('Download');
   }
 
   onBooted() {

src/background/services/DownloadService.js

@@ -24,7 +24,7 @@ class DownloadService extends AbstractService {
 
   constructor() {
     super();
-    // this.listenOnDeterminingFilename();
+    this.listenOnDeterminingFilename();
   }
 
   listenOnDeterminingFilename() {
@@ -131,7 +131,7 @@ class DownloadService extends AbstractService {
   }
 
   async saveFile({ url, filename }) {
-    // this.cacheDownloadIdFilename(url, filename);
+    this.cacheDownloadIdFilename(url, filename);
     const downloadId = await FileSystem.getDefault().saveFile({ url, filename });
     return downloadId;
   }