import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/permission/PermissionUtils.cpp

@@ -0,0 +1,62 @@
+/* -*- 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/. */
+
+#include "PermissionUtils.h"
+
+namespace mozilla {
+namespace dom {
+
+const char* kPermissionTypes[] = {
+  "geo",
+  "desktop-notification",
+  // Alias `push` to `desktop-notification`.
+  "desktop-notification"
+};
+
+// `-1` for the last null entry.
+const size_t kPermissionNameCount =
+  MOZ_ARRAY_LENGTH(PermissionNameValues::strings) - 1;
+
+static_assert(MOZ_ARRAY_LENGTH(kPermissionTypes) == kPermissionNameCount,
+              "kPermissionTypes and PermissionName count should match");
+
+const char*
+PermissionNameToType(PermissionName aName)
+{
+  MOZ_ASSERT((size_t)aName < ArrayLength(kPermissionTypes));
+  return kPermissionTypes[static_cast<size_t>(aName)];
+}
+
+Maybe<PermissionName>
+TypeToPermissionName(const char* aType)
+{
+  for (size_t i = 0; i < ArrayLength(kPermissionTypes); ++i) {
+    if (!strcmp(aType, kPermissionTypes[i])) {
+      return Some(static_cast<PermissionName>(i));
+    }
+  }
+
+  return Nothing();
+}
+
+PermissionState
+ActionToPermissionState(uint32_t aAction)
+{
+  switch (aAction) {
+    case nsIPermissionManager::ALLOW_ACTION:
+      return PermissionState::Granted;
+
+    case nsIPermissionManager::DENY_ACTION:
+      return PermissionState::Denied;
+
+    default:
+    case nsIPermissionManager::PROMPT_ACTION:
+      return PermissionState::Prompt;
+  }
+}
+
+} // namespace dom
+} // namespace mozilla