gecko-dev/toolkit/components/antitracking/TemporaryAccessGrantObserver.h

86 строки
2.5 KiB
C++

/* -*- 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_temporaryaccessgrantobserver_h
#define mozilla_temporaryaccessgrantobserver_h
#include "mozilla/PrincipalHashKey.h"
#include "nsCOMPtr.h"
#include "nsHashKeys.h"
#include "nsIObserver.h"
#include "nsString.h"
#include "PLDHashTable.h"
template <class, class>
class nsDataHashtable;
class nsITimer;
class TemporaryAccessGrantCacheKey;
namespace mozilla {
class PermissionManager;
class TemporaryAccessGrantCacheKey : public PrincipalHashKey {
public:
typedef std::pair<nsCOMPtr<nsIPrincipal>, nsCString> KeyType;
typedef const KeyType* KeyTypePointer;
explicit TemporaryAccessGrantCacheKey(KeyTypePointer aKey)
: PrincipalHashKey(aKey->first), mType(aKey->second) {}
TemporaryAccessGrantCacheKey(TemporaryAccessGrantCacheKey&& aOther) = default;
~TemporaryAccessGrantCacheKey() = default;
KeyType GetKey() const { return std::make_pair(mPrincipal, mType); }
bool KeyEquals(KeyTypePointer aKey) const {
return PrincipalHashKey::KeyEquals(aKey->first) && mType == aKey->second;
}
static KeyTypePointer KeyToPointer(KeyType& aKey) { return &aKey; }
static PLDHashNumber HashKey(KeyTypePointer aKey) {
if (!aKey) {
return 0;
}
return HashGeneric(PrincipalHashKey::HashKey(aKey->first),
HashString(aKey->second));
}
enum { ALLOW_MEMMOVE = true };
private:
nsCString mType;
};
class TemporaryAccessGrantObserver final : public nsIObserver {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
static void Create(PermissionManager* aPM, nsIPrincipal* aPrincipal,
const nsACString& aType);
void SetTimer(nsITimer* aTimer);
private:
TemporaryAccessGrantObserver(PermissionManager* aPM, nsIPrincipal* aPrincipal,
const nsACString& aType);
~TemporaryAccessGrantObserver() = default;
private:
typedef nsDataHashtable<TemporaryAccessGrantCacheKey, nsCOMPtr<nsITimer>>
ObserversTable;
static UniquePtr<ObserversTable> sObservers;
nsCOMPtr<nsITimer> mTimer;
RefPtr<PermissionManager> mPM;
nsCOMPtr<nsIPrincipal> mPrincipal;
nsCString mType;
};
} // namespace mozilla
#endif // mozilla_temporaryaccessgrantobserver_h