Integrate Kiosk Mode with enterprise policies.

chrome/browser/chromeos/kiosk_mode/kiosk_mode_settings.h

+// Copyright (c) 2012 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_SETTINGS_H_
+#define CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_SETTINGS_H_
+#pragma once
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/callback_forward.h"
+#include "base/time.h"
+
+namespace base {
+template <typename T> struct DefaultLazyInstanceTraits;
+}
+
+namespace {
+
+const int kMaxIdleLogoutTimeout = 600000; // ms = 600s = 10m.
+const int kMinIdleLogoutTimeout = 5000; // ms = 5s.
+
+const int kMaxIdleLogoutWarningDuration = 60000; // ms = 60s.
+const int kMinIdleLogoutWarningDuration = 1000; // ms = 1s.
+
+}  // namespace
+
+namespace chromeos {
+
+// This class centralizes all our code to get KioskMode settings; since
+// KioskMode interferes with normal operations all over Chrome, having all
+// data about it pulled from a central location would make future
+// refactorings easier. This class also handles getting trust for the policies
+// via it's init method.
+//
+// Note: If Initialize is not called before the various Getters, we'll return
+// invalid values.
+class KioskModeSettings {
+ public:
+  // This method checks if Kiosk Mode is enabled or not.
+  virtual bool IsKioskModeEnabled();
+
+  static KioskModeSettings* Get();
+
+  // Initialize the settings; this will call the callback once trust is
+  // established with the policy settings provider.
+  virtual void Initialize(const base::Closure& notify_initialized);
+  virtual bool is_initialized() const;
+
+  // The path to the screensaver extension.
+  virtual std::string GetScreensaverPath() const;
+  // The timeout before which we'll start showing the screensaver.
+  virtual base::TimeDelta GetScreensaverTimeout() const;
+
+  // NOTE: The idle logout timeout is the time 'till' we show the idle dialog
+  // box. After we show the dialog box, it remains up for an 'additional'
+  // IdleLogoutWarningTimeout seconds, which adds to the total time before the
+  // user is logged out.
+  // The time to logout the user in on idle.
+  virtual base::TimeDelta GetIdleLogoutTimeout() const;
+  // The time to show the countdown timer for.
+  virtual base::TimeDelta GetIdleLogoutWarningDuration() const;
+
+ protected:
+  // Needed here so MockKioskModeSettings can inherit from us.
+  KioskModeSettings();
+  virtual ~KioskModeSettings();
+
+ private:
+  friend struct base::DefaultLazyInstanceTraits<KioskModeSettings>;
+  friend class KioskModeSettingsTest;
+
+  bool is_initialized_;
+
+  // Used for testing.
+  void set_initialized(bool value) { is_initialized_ = value; }
+
+  std::string screensaver_id_;
+  std::string screensaver_path_;
+  base::TimeDelta screensaver_timeout_;
+  base::TimeDelta idle_logout_timeout_;
+  base::TimeDelta idle_logout_warning_duration_;
+
+  DISALLOW_COPY_AND_ASSIGN(KioskModeSettings);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_KIOSK_MODE_KIOSK_MODE_SETTINGS_H_