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fallback indexedDbIfSupported in private mode on FF

This commit is contained in:
CDDelta 2020-12-22 20:44:17 +11:00
parent 22c38aa911
commit 13fcc75b1c
2 changed files with 13 additions and 5 deletions
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2
docs/content/en/docs/Other engines/web.md
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@ -90,7 +90,7 @@ performant, since we don't have to encode binary blobs as strings.
To use this implementation on browsers that support it, replace `WebDatabase(name)` with:
```dart
WebDatabase.withStorage(MoorWebStorage.indexedDbIfSupported(name))
WebDatabase.withStorage(await MoorWebStorage.indexedDbIfSupported(name))
```
Moor will automatically migrate data from local storage to `IndexeDb` when it is available.

16
moor/lib/src/web/storage.dart
View File

@ -47,22 +47,30 @@ abstract class MoorWebStorage {
/// Uses [MoorWebStorage.indexedDb] if the current browser supports it.
/// Otherwise, falls back to the local storage based implementation.
factory MoorWebStorage.indexedDbIfSupported(String name,
{bool inWebWorker = false}) {
return supportsIndexedDb(inWebWorker: inWebWorker)
static Future<MoorWebStorage> indexedDbIfSupported(String name,
{bool inWebWorker = false}) async {
return await supportsIndexedDb(inWebWorker: inWebWorker)
? MoorWebStorage.indexedDb(name, inWebWorker: inWebWorker)
: MoorWebStorage(name);
}
/// Attempts to check whether the current browser supports the
/// [MoorWebStorage.indexedDb] storage implementation.
static bool supportsIndexedDb({bool inWebWorker = false}) {
static Future<bool> supportsIndexedDb({bool inWebWorker = false}) async {
var isIndexedDbSupported = false;
if (inWebWorker && WorkerGlobalScope.instance.indexedDB != null) {
isIndexedDbSupported = true;
} else {
try {
isIndexedDbSupported = IdbFactory.supported;
if (isIndexedDbSupported) {
// Try opening a mock database to check if IndexedDB is really
// available. This avoids the problem with Firefox incorrectly
// reporting IndexedDB as supported in private mode.
final mockDb = await window.indexedDB!.open('moor_mock_db');
mockDb.close();
}
} catch (error) {
isIndexedDbSupported = false;
}