This interface provides methods for managing data stored in the offline apps cache.
1.0
36
Introduced
Gecko 1.9
Inherits from:
nsISupports
Last changed in Gecko 2.0 (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1)Implemented by @mozilla.org/dom/storagemanager;1 as a service:
var domStorageManager = Components.classes["@mozilla.org/dom/storagemanager;1"]
.getService(Components.interfaces.nsIDOMStorageManager);
Method overview
void clearOfflineApps(); |
nsIDOMStorage getLocalStorageForPrincipal(in nsIPrincipal aPrincipal, in DOMString aDocumentURI); |
long getUsage(in AString aOwnerDomain); |
Methods
clearOfflineApps()
Clears keys owned by offline applications. All data owned by a domain with the "offline-app" permission is removed from the database.
void clearOfflineApps();
Parameters
None.
getLocalStorageForPrincipal()
Requires Gecko 1.9.1 (Firefox 3.5 / Thunderbird 3.0 / SeaMonkey 2.0)Returns the instance of the localStorage object for aURI's origin. This is used to ensure that only one local storage area exists for a given origin.
nsIDOMStorage getLocalStorageForPrincipal( nsIPrincipal aPrincipal, DOMString aDocumentURI );
Parameters
aPrincipal- The principal for which to return the local storage object.
aDocumentURI- The document's URI.
Return value
The local storage object for the specified principal.
getUsage()
Returns the amount of disk space used by a domain. Usage is checked against the domain of the page that set the key (the owner domain), not the domain of the storage object.
long getUsage( AString aOwnerDomain );
Parameters
aOwnerDomain- The domain to check.
Return value
The space usage of the domain, in bytes.
See also
- offline apps
- DOM Storage
- Structured client-side storage (HTML 5 specification)