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Allow OSM offline downloads, disable button for restricted providers

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Allow offline area downloads for OSM tile server. Move the "downloads
not permitted" check from inside the download dialog to the download
button itself — the button is now disabled (greyed out) when the
current tile type doesn't support offline downloads.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Doug Borg
2026-03-04 09:47:42 -07:00
parent 2d92214bed
commit f3f40f36ef
4 changed files with 38 additions and 70 deletions
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lib/widgets/download_area_dialog.dart
-36
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@@ -267,42 +267,6 @@ class _DownloadAreaDialogState extends State<DownloadAreaDialog> {
final selectedProvider = appState.selectedTileProvider;
final selectedTileType = appState.selectedTileType;
// Check if the tile provider allows offline downloads
if (selectedTileType != null && !selectedTileType.allowsOfflineDownload) {
if (!context.mounted) return;
// Capture navigator before popping, since context is
// deactivated after Navigator.pop.
final navigator = Navigator.of(context);
navigator.pop();
showDialog(
context: navigator.context,
builder: (context) => AlertDialog(
title: Row(
children: [
const Icon(Icons.block, color: Colors.orange),
const SizedBox(width: 10),
Text(locService.t('download.title')),
],
),
content: Text(
locService.t(
'download.offlineNotPermitted',
params: [
selectedProvider?.name ?? locService.t('download.currentTileProvider'),
],
),
),
actions: [
TextButton(
onPressed: () => Navigator.pop(context),
child: Text(locService.t('actions.ok')),
),
],
),
);
return;
}
// Guard: provider and tile type must be non-null for a
// useful offline area (fetchLocalTile requires exact match).
if (selectedProvider == null || selectedTileType == null) {