Though unstable, Chromium via WebKit has introduced an API for working
with storage quotas:
https://groups.google.com/a/chromium.org/group/chromium-html5/msg/5261d24266ba4366
In brief:
void queryUsageAndQuota(
unsigned short storageType,
optional StorageInfoUsageCallback successCallback,
optional StorageInfoErrorCallback errorCallback);
// Requests a new quota. Requesting a larger quota may require user's
// explicit permission via UI prompting / infobar.
void requestQuota(
unsigned short storageType,
unsigned long long newQuotaInBytes,
optional StorageInfoQuotaCallback successCallback,
optional StorageInfoErrorCallback errorCallback);
};
This API works across all storage types except localStorage, as
localStorage is unique.
It spans IndexedDB, FileSystem, AppCache and for those that are carrying
it, WebSQL.
-Charles
