Add LoginState class to src/chromeos/login

chromeos/login/login_state.cc

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chromeos/login/login_state.h"
+
+#include "base/chromeos/chromeos_version.h"
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "chromeos/chromeos_switches.h"
+
+namespace chromeos {
+
+namespace {
+
+// When running a Chrome OS build outside of a device (i.e. on a developer's
+// workstation) and not running as login-manager, pretend like we're always
+// logged in.
+bool AlwaysLoggedIn() {
+  return !base::chromeos::IsRunningOnChromeOS() &&
+      !CommandLine::ForCurrentProcess()->HasSwitch(switches::kLoginManager);
+}
+
+}  // namespace
+
+static LoginState* g_login_state = NULL;
+
+// static
+void LoginState::Initialize() {
+  CHECK(!g_login_state);
+  g_login_state = new LoginState();
+}
+
+// static
+void LoginState::Shutdown() {
+  CHECK(g_login_state);
+  delete g_login_state;
+  g_login_state = NULL;
+}
+
+// static
+LoginState* LoginState::Get() {
+  CHECK(g_login_state) << "LoginState::Get() called before Initialize()";
+  return g_login_state;
+}
+
+// static
+bool LoginState::IsInitialized() {
+  return g_login_state;
+}
+
+void LoginState::AddObserver(Observer* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void LoginState::RemoveObserver(Observer* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
+void LoginState::SetLoggedInState(LoggedInState state,
+                                  LoggedInUserType type) {
+  if (state == logged_in_state_)
+    return;
+  VLOG(1) << "LoggedInState: " << state << " UserType: " << type;
+  logged_in_state_ = state;
+  logged_in_user_type_ = type;
+  NotifyObservers();
+}
+
+LoginState::LoggedInState LoginState::GetLoggedInState() const {
+  if (AlwaysLoggedIn())
+    return LOGGED_IN_ACTIVE;
+  return logged_in_state_;
+}
+
+LoginState::LoggedInUserType LoginState::GetLoggedInUserType() const {
+  return logged_in_user_type_;
+}
+
+bool LoginState::IsUserLoggedIn() const {
+  return GetLoggedInState() == LOGGED_IN_ACTIVE;
+}
+
+bool LoginState::IsUserAuthenticated() const {
+  LoggedInUserType type = logged_in_user_type_;
+  return type == chromeos::LoginState::LOGGED_IN_USER_REGULAR ||
+      type == chromeos::LoginState::LOGGED_IN_USER_OWNER ||
+      type == chromeos::LoginState::LOGGED_IN_USER_LOCALLY_MANAGED;
+}
+
+// Private methods
+
+LoginState::LoginState() : logged_in_state_(LOGGED_IN_OOBE),
+                           logged_in_user_type_(LOGGED_IN_USER_NONE) {
+}
+
+LoginState::~LoginState() {
+}
+
+void LoginState::NotifyObservers() {
+  FOR_EACH_OBSERVER(LoginState::Observer, observer_list_,
+                    LoggedInStateChanged(GetLoggedInState()));
+}
+
+}  // namespace chromeos