From bb41004ec4553c2ec2b5beb90ae3763c8295bf87 Mon Sep 17 00:00:00 2001
From: Mike Sheldon <mike@mikeasoft.com>
Date: Sat, 16 Nov 2024 22:32:08 +0000
Subject: [PATCH] Persist download managers through list updates (fixes #15)

---
 lib/voice_selector.dart | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/voice_selector.dart b/lib/voice_selector.dart
index 422109d..fef40f5 100644
--- a/lib/voice_selector.dart
+++ b/lib/voice_selector.dart
@@ -36,6 +36,7 @@ class _VoiceSelectorState extends State<VoiceSelector> {
   List<String> languages = voices.keys.toList();
   Map<dynamic, dynamic> selectedSubVoice = {};
   int currentSubVoice = 0;
+  Map<String, DownloadManager> downloadManagers = {};
 
   void findDownloads() async {
     final Directory appDir = await getDataDir();
@@ -260,7 +261,12 @@ class _VoiceSelectorState extends State<VoiceSelector> {
                 itemBuilder: (BuildContext context, int index) {
                   String? voiceId =
                       voices[selectedLanguage]?.keys.elementAt(index);
-                  DownloadManager downloadManager = DownloadManager();
+                  if (voiceId == null) {
+                    return const SizedBox();
+                  }
+                  DownloadManager downloadManager =
+                      downloadManagers[voiceId] ?? DownloadManager();
+                  downloadManagers[voiceId] = downloadManager;
                   Map<dynamic, dynamic> subvoices = voices[selectedLanguage]
                       ?.entries
                       .elementAt(index)
@@ -307,7 +313,7 @@ class _VoiceSelectorState extends State<VoiceSelector> {
                                         ? const Icon(Icons.stop)
                                         : const Icon(Icons.play_arrow))),
                         const SizedBox(width: 32),
-                        Text(voiceId!),
+                        Text(voiceId),
                         subvoices.isEmpty
                             ? const SizedBox()
                             : const Text(" - "),