OLD | NEW |
(Empty) | |
| 1 // Copyright 2014 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_INPUT_METHOD_INPUT_METHOD_SYNCER_H_ |
| 6 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_SYNCER_H_ |
| 7 |
| 8 #include <string> |
| 9 |
| 10 #include "base/memory/scoped_ptr.h" |
| 11 #include "base/memory/weak_ptr.h" |
| 12 #include "base/prefs/pref_member.h" |
| 13 #include "chrome/browser/prefs/pref_service_syncable_observer.h" |
| 14 #include "ui/base/ime/chromeos/input_method_manager.h" |
| 15 |
| 16 class PrefServiceSyncable; |
| 17 |
| 18 namespace user_prefs { |
| 19 class PrefRegistrySyncable; |
| 20 } |
| 21 |
| 22 namespace chromeos { |
| 23 namespace input_method { |
| 24 |
| 25 // Helper class to handle syncing of language and input method preferences. |
| 26 // Changes to local preferences are handed up to the sync server. But Chrome OS |
| 27 // should not locally apply the corresponding preferences from the sync server, |
| 28 // except once: when the user first logs into the device. |
| 29 // Thus, the user's most recent changes to language and input method preferences |
| 30 // will be brought down when signing in to a new device but not in future syncs. |
| 31 class InputMethodSyncer : public PrefServiceSyncableObserver { |
| 32 public: |
| 33 InputMethodSyncer( |
| 34 PrefServiceSyncable* prefs, |
| 35 scoped_refptr<input_method::InputMethodManager::State> ime_state); |
| 36 virtual ~InputMethodSyncer(); |
| 37 |
| 38 // Registers the syncable input method prefs. |
| 39 static void RegisterProfilePrefs( |
| 40 user_prefs::PrefRegistrySyncable* registry); |
| 41 |
| 42 // Must be called after InputMethodSyncer is created. |
| 43 void Initialize(); |
| 44 |
| 45 private: |
| 46 // Adds the input methods from the syncable prefs to the device-local prefs. |
| 47 // This should only be called once (after user's first sync) and only adds |
| 48 // to, not removes from, the user's input method prefs. |
| 49 void MergeSyncedPrefs(); |
| 50 |
| 51 // For the given input method pref, adds unique values from |synced_pref| to |
| 52 // values in |pref|. The new values are converted from legacy engine IDs to |
| 53 // input method IDs if necessary. |
| 54 std::string AddSupportedInputMethodValues( |
| 55 const std::string& pref, |
| 56 const std::string& synced_pref, |
| 57 const char* pref_name); |
| 58 |
| 59 // Sets prefs::kLanguagePreferredLanguages and sets |merging_| to false. |
| 60 void FinishMerge(const std::string& languages); |
| 61 |
| 62 // Callback method for preference changes. Updates the syncable prefs using |
| 63 // the local pref values. |
| 64 void OnPreferenceChanged(const std::string& pref_name); |
| 65 |
| 66 // PrefServiceSyncableObserver implementation. |
| 67 void OnIsSyncingChanged() override; |
| 68 |
| 69 StringPrefMember preferred_languages_; |
| 70 StringPrefMember preload_engines_; |
| 71 StringPrefMember enabled_extension_imes_; |
| 72 // These are syncable variants which don't change the device settings. We can |
| 73 // set these to keep track of the user's most recent choices. That way, after |
| 74 // the initial sync, we can add the user's synced choices to the values that |
| 75 // have already been chosen at OOBE. |
| 76 StringPrefMember preferred_languages_syncable_; |
| 77 StringPrefMember preload_engines_syncable_; |
| 78 StringPrefMember enabled_extension_imes_syncable_; |
| 79 |
| 80 PrefServiceSyncable* prefs_; |
| 81 scoped_refptr<input_method::InputMethodManager::State> ime_state_; |
| 82 |
| 83 // Used to ignore PrefChanged events while InputMethodManager is merging. |
| 84 bool merging_; |
| 85 |
| 86 base::WeakPtrFactory<InputMethodSyncer> weak_factory_; |
| 87 }; |
| 88 |
| 89 } // namespace input_method |
| 90 } // namespace chromeos |
| 91 |
| 92 #endif // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_SYNCER_H_ |
OLD | NEW |