58 lines
2.4 KiB
Dart
58 lines
2.4 KiB
Dart
import 'package:aves/model/image_entry.dart';
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import 'package:aves/services/android_file_service.dart';
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import 'package:aves/utils/android_file_utils.dart';
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import 'package:flutter/material.dart';
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import 'package:tuple/tuple.dart';
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mixin PermissionAwareMixin {
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Future<bool> checkStoragePermission(BuildContext context, Iterable<ImageEntry> entries) {
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return checkStoragePermissionForPaths(context, entries.where((e) => e.path != null).map((e) => e.path));
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}
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Future<bool> checkStoragePermissionForPaths(BuildContext context, Iterable<String> paths) async {
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final volumes = paths.map((path) => androidFileUtils.getStorageVolume(path)).toSet();
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final removableVolumes = volumes.where((v) => v.isRemovable);
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final volumePermissions = await Future.wait<Tuple2<StorageVolume, bool>>(
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removableVolumes.map(
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(volume) => AndroidFileService.hasGrantedPermissionToVolumeRoot(volume.path).then(
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(granted) => Tuple2(volume, granted),
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),
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),
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);
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final ungrantedVolumes = volumePermissions.where((t) => !t.item2).map((t) => t.item1).toList();
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while (ungrantedVolumes.isNotEmpty) {
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final volume = ungrantedVolumes.first;
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final confirmed = await showDialog<bool>(
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context: context,
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builder: (BuildContext context) {
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return AlertDialog(
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title: const Text('Storage Volume Access'),
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content: Text('Please select the root directory of “${volume.description}” in the next screen, so that this app can access it and complete your request.'),
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actions: [
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FlatButton(
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onPressed: () => Navigator.pop(context),
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child: Text('Cancel'.toUpperCase()),
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),
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FlatButton(
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onPressed: () => Navigator.pop(context, true),
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child: Text('OK'.toUpperCase()),
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),
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],
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);
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},
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);
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// abort if the user cancels in Flutter
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if (confirmed == null || !confirmed) return false;
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final granted = await AndroidFileService.requestVolumeAccess(volume.path);
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debugPrint('$runtimeType _checkStoragePermission with volume=${volume.path} got granted=$granted');
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if (granted) {
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ungrantedVolumes.remove(volume);
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} else {
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// abort if the user denies access from the native dialog
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return false;
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}
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}
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return true;
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}
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}
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