1 files changed, 87 insertions, 0 deletions
diff --git a/toolkit/components/antitracking/TemporaryAccessGrantObserver.h b/toolkit/components/antitracking/TemporaryAccessGrantObserver.h
new file mode 100644
index 0000000000..09ff93311a
--- /dev/null
+++ b/toolkit/components/antitracking/TemporaryAccessGrantObserver.h
@@ -0,0 +1,87 @@
+/* -*- 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 "nsHashtablesFwd.h"
+#include "nsTHashMap.h"
+#include "nsINamed.h"
+#include "nsIObserver.h"
+#include "nsString.h"
+#include "PLDHashTable.h"
+
+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 nsINamed {
+ public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSINAMED
+
+  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:
+  using ObserversTable =
+      nsTHashMap<TemporaryAccessGrantCacheKey, nsCOMPtr<nsITimer>>;
+  static UniquePtr<ObserversTable> sObservers;
+  nsCOMPtr<nsITimer> mTimer;
+  RefPtr<PermissionManager> mPM;
+  nsCOMPtr<nsIPrincipal> mPrincipal;
+  nsCString mType;
+};
+
+}  // namespace mozilla
+
+#endif  // mozilla_temporaryaccessgrantobserver_h