chrome/browser/chromeos/preferences.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_CHROMEOS_PREFERENCES_H_
   6 #define CHROME_BROWSER_CHROMEOS_PREFERENCES_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "ash/shell_observer.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/prefs/pref_member.h"
  14 #include "chrome/browser/chromeos/language_preferences.h"
  15 #include "chrome/browser/chromeos/login/user_manager.h"
  16 #include "chrome/browser/prefs/pref_service_syncable_observer.h"
  17
  18 class PrefRegistrySimple;
  19 class PrefService;
  20 class PrefServiceSyncable;
  21
  22 class TracingManager;
  23
  24 namespace user_prefs {
  25 class PrefRegistrySyncable;
  26 }
  27
  28 namespace chromeos {
  29
  30 class User;
  31
  32 namespace input_method {
  33 class InputMethodManager;
  34 }
  35
  36 // The Preferences class handles Chrome OS preferences. When the class
  37 // is first initialized, it will initialize the OS settings to what's stored in
  38 // the preferences. These include touchpad settings, etc.
  39 // When the preferences change, we change the settings to reflect the new value.
  40 class Preferences : public PrefServiceSyncableObserver,
  41                     public ash::ShellObserver,
  42                     public UserManager::UserSessionStateObserver {
  43  public:
  44   Preferences();
  45   explicit Preferences(
  46       input_method::InputMethodManager* input_method_manager);  // for testing
  47   virtual ~Preferences();
  48
  49   // These method will register the prefs associated with Chrome OS settings.
  50   static void RegisterPrefs(PrefRegistrySimple* registry);
  51   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
  52
  53   // This method will initialize Chrome OS settings to values in user prefs.
  54   // |user| is the user owning this preferences.
  55   void Init(PrefServiceSyncable* prefs, const User* user);
  56
  57   void InitUserPrefsForTesting(PrefServiceSyncable* prefs, const User* user);
  58   void SetInputMethodListForTesting();
  59
  60  private:
  61   enum ApplyReason {
  62     REASON_INITIALIZATION,
  63     REASON_ACTIVE_USER_CHANGED,
  64     REASON_PREF_CHANGED
  65   };
  66
  67   // Initializes all member prefs.
  68   void InitUserPrefs(PrefServiceSyncable* prefs);
  69
  70   // Callback method for preference changes.
  71   void OnPreferenceChanged(const std::string& pref_name);
  72
  73   // This will set the OS settings when the preference changed or user owning
  74   // these preferences became active. Also this method is called on
  75   // initialization. The reason of call is stored in |reason| parameter.
  76   // |pref_name| keeps name of changed preference in |reason| is
  77   // |REASON_PREF_CHANGED|, otherwise it is empty.
  78   void ApplyPreferences(ApplyReason reason,
  79                         const std::string& pref_name);
  80
  81   // A variant of SetLanguageConfigStringList. You can pass comma-separated
  82   // values. Examples of |value|: "", "Control+space,Hiragana"
  83   void SetLanguageConfigStringListAsCSV(const char* section,
  84                                         const char* name,
  85                                         const std::string& value);
  86
  87   // Restores the user's preferred input method / keyboard layout on signing in.
  88   void SetInputMethodList();
  89
  90   // Updates the initial key repeat delay and key repeat interval following
  91   // current prefs values. We set the delay and interval at once since an
  92   // underlying XKB API requires it.
  93   void UpdateAutoRepeatRate();
  94
  95   // Force natural scroll to on if --enable-natural-scroll-default is specified
  96   // on the cmd line.
  97   void ForceNaturalScrollDefault();
  98
  99   // PrefServiceSyncableObserver implementation.
 100   virtual void OnIsSyncingChanged() OVERRIDE;
 101
 102   // Overriden from ash::ShellObserver.
 103   virtual void OnTouchHudProjectionToggled(bool enabled) OVERRIDE;
 104
 105   // Overriden form UserManager::UserSessionStateObserver.
 106   virtual void ActiveUserChanged(const User* active_user) OVERRIDE;
 107
 108   PrefServiceSyncable* prefs_;
 109
 110   input_method::InputMethodManager* input_method_manager_;
 111   scoped_ptr<TracingManager> tracing_manager_;
 112
 113   BooleanPrefMember performance_tracing_enabled_;
 114   BooleanPrefMember tap_to_click_enabled_;
 115   BooleanPrefMember tap_dragging_enabled_;
 116   BooleanPrefMember three_finger_click_enabled_;
 117   BooleanPrefMember natural_scroll_;
 118   BooleanPrefMember vert_edge_scroll_enabled_;
 119   IntegerPrefMember speed_factor_;
 120   IntegerPrefMember mouse_sensitivity_;
 121   IntegerPrefMember touchpad_sensitivity_;
 122   BooleanPrefMember primary_mouse_button_right_;
 123   FilePathPrefMember download_default_directory_;
 124   BooleanPrefMember touch_hud_projection_enabled_;
 125
 126   // Input method preferences.
 127   StringPrefMember preload_engines_;
 128   StringPrefMember current_input_method_;
 129   StringPrefMember previous_input_method_;
 130   StringPrefMember enabled_extension_imes_;
 131
 132   BooleanPrefMember xkb_auto_repeat_enabled_;
 133   IntegerPrefMember xkb_auto_repeat_delay_pref_;
 134   IntegerPrefMember xkb_auto_repeat_interval_pref_;
 135
 136   // User owning these preferences.
 137   const User* user_;
 138
 139   // Whether user is a primary user.
 140   bool user_is_primary_;
 141
 142   DISALLOW_COPY_AND_ASSIGN(Preferences);
 143 };
 144
 145 }  // namespace chromeos
 146
 147 #endif  // CHROME_BROWSER_CHROMEOS_PREFERENCES_H_