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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_StorageObserver_h
#define mozilla_dom_StorageObserver_h
#include "mozilla/dom/quota/CheckedUnsafePtr.h"
#include "nsINamed.h"
#include "nsIObserver.h"
#include "nsITimer.h"
#include "nsWeakReference.h"
#include "nsTObserverArray.h"
#include "nsString.h"
namespace mozilla::dom {
class StorageObserver;
// Main-thread interface implemented by legacy LocalStorageManager and current
// SessionStorageManager for direct consumption. Also implemented by legacy
// StorageDBParent and current SessionStorageObserverParent for propagation to
// content processes.
class StorageObserverSink
: public SupportsCheckedUnsafePtr<CheckIf<DiagnosticAssertEnabled>> {
public:
virtual ~StorageObserverSink() = default;
private:
friend class StorageObserver;
virtual nsresult Observe(const char* aTopic,
const nsAString& aOriginAttributesPattern,
const nsACString& aOriginScope) = 0;
};
// Statically (through layout statics) initialized observer receiving and
// processing chrome clearing notifications, such as cookie deletion etc.
class StorageObserver : public nsIObserver,
public nsINamed,
public nsSupportsWeakReference {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
NS_DECL_NSINAMED
static nsresult Init();
static nsresult Shutdown();
static StorageObserver* Self() { return sSelf; }
void AddSink(StorageObserverSink* aObs);
void RemoveSink(StorageObserverSink* aObs);
void Notify(const char* aTopic,
const nsAString& aOriginAttributesPattern = u""_ns,
const nsACString& aOriginScope = ""_ns);
void NoteBackgroundThread(uint32_t aPrivateBrowsingId,
nsIEventTarget* aBackgroundThread);
private:
virtual ~StorageObserver() = default;
nsresult GetOriginScope(const char16_t* aData, nsACString& aOriginScope);
static void TestingPrefChanged(const char* aPrefName, void* aClosure);
static StorageObserver* sSelf;
nsCOMPtr<nsIEventTarget> mBackgroundThread[2];
// Weak references
nsTObserverArray<CheckedUnsafePtr<StorageObserverSink>> mSinks;
nsCOMPtr<nsITimer> mDBThreadStartDelayTimer;
};
} // namespace mozilla::dom
#endif // mozilla_dom_StorageObserver_h
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