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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
2026-03-07 12:34:01 -07:00
co-authored by Claude Opus 4.6
parent 2d92214bed
commit f3f40f36ef
4 changed files with 38 additions and 70 deletions
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lib/screens/home_screen.dart
+32 -28
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@@ -578,37 +578,41 @@ class _HomeScreenState extends State<HomeScreen> with TickerProviderStateMixin {
flex: 3, // 30% for secondary action
child: AnimatedBuilder(
animation: LocalizationService.instance,
builder: (context, child) => FittedBox(
fit: BoxFit.scaleDown,
child: ElevatedButton.icon(
icon: Icon(Icons.download_for_offline),
label: Text(LocalizationService.instance.download),
onPressed: () {
// Check minimum zoom level before opening download dialog
final currentZoom = _mapController.mapController.camera.zoom;
if (currentZoom < kMinZoomForOfflineDownload) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(
LocalizationService.instance.t('download.areaTooBigMessage',
params: [kMinZoomForOfflineDownload.toString()])
builder: (context, child) {
final appState = context.watch<AppState>();
final canDownload = appState.selectedTileType?.allowsOfflineDownload ?? false;
return FittedBox(
fit: BoxFit.scaleDown,
child: ElevatedButton.icon(
icon: Icon(Icons.download_for_offline),
label: Text(LocalizationService.instance.download),
onPressed: canDownload ? () {
// Check minimum zoom level before opening download dialog
final currentZoom = _mapController.mapController.camera.zoom;
if (currentZoom < kMinZoomForOfflineDownload) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(
LocalizationService.instance.t('download.areaTooBigMessage',
params: [kMinZoomForOfflineDownload.toString()])
),
),
),
);
return;
}
showDialog(
context: context,
builder: (ctx) => DownloadAreaDialog(controller: _mapController.mapController),
);
return;
}
showDialog(
context: context,
builder: (ctx) => DownloadAreaDialog(controller: _mapController.mapController),
);
},
style: ElevatedButton.styleFrom(
minimumSize: Size(0, 48),
textStyle: TextStyle(fontSize: 16),
} : null,
style: ElevatedButton.styleFrom(
minimumSize: Size(0, 48),
textStyle: TextStyle(fontSize: 16),
),
),
),
),
);
},
),
),
],