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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // This provides a way to access the application's current preferences. | 5 // This provides a way to access the application's current preferences. |
6 | 6 |
7 // Chromium settings and storage represent user-selected preferences and | 7 // Chromium settings and storage represent user-selected preferences and |
8 // information and MUST not be extracted, overwritten or modified except | 8 // information and MUST not be extracted, overwritten or modified except |
9 // through Chromium defined APIs. | 9 // through Chromium defined APIs. |
10 | 10 |
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214 // Changes the default value for a preference. Takes ownership of |value|. | 214 // Changes the default value for a preference. Takes ownership of |value|. |
215 // | 215 // |
216 // Will cause a pref change notification to be fired if this causes | 216 // Will cause a pref change notification to be fired if this causes |
217 // the effective value to change. | 217 // the effective value to change. |
218 void SetDefaultPrefValue(const char* path, base::Value* value); | 218 void SetDefaultPrefValue(const char* path, base::Value* value); |
219 | 219 |
220 // Returns the default value of the given preference. |path| must point to a | 220 // Returns the default value of the given preference. |path| must point to a |
221 // registered preference. In that case, will never return NULL. | 221 // registered preference. In that case, will never return NULL. |
222 const base::Value* GetDefaultPrefValue(const char* path) const; | 222 const base::Value* GetDefaultPrefValue(const char* path) const; |
223 | 223 |
224 // Deprecated. Do not add calls to this method. | |
225 // Marks that the user store should not prune out empty values for |key| when | |
226 // writting to disk. | |
227 // TODO(gab): Enforce this at a lower level for all values and remove this | |
228 // method. | |
229 void MarkUserStoreNeedsEmptyValue(const std::string& key) const; | |
230 | |
231 // Returns true if a value has been set for the specified path. | 224 // Returns true if a value has been set for the specified path. |
232 // NOTE: this is NOT the same as FindPreference. In particular | 225 // NOTE: this is NOT the same as FindPreference. In particular |
233 // FindPreference returns whether RegisterXXX has been invoked, where as | 226 // FindPreference returns whether RegisterXXX has been invoked, where as |
234 // this checks if a value exists for the path. | 227 // this checks if a value exists for the path. |
235 bool HasPrefPath(const char* path) const; | 228 bool HasPrefPath(const char* path) const; |
236 | 229 |
237 // Returns a dictionary with effective preference values. The ownership | 230 // Returns a dictionary with effective preference values. The ownership |
238 // is passed to the caller. | 231 // is passed to the caller. |
239 scoped_ptr<base::DictionaryValue> GetPreferenceValues() const; | 232 scoped_ptr<base::DictionaryValue> GetPreferenceValues() const; |
240 | 233 |
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358 | 351 |
359 // Local cache of registered Preference objects. The pref_registry_ | 352 // Local cache of registered Preference objects. The pref_registry_ |
360 // is authoritative with respect to what the types and default values | 353 // is authoritative with respect to what the types and default values |
361 // of registered preferences are. | 354 // of registered preferences are. |
362 mutable PreferenceMap prefs_map_; | 355 mutable PreferenceMap prefs_map_; |
363 | 356 |
364 DISALLOW_COPY_AND_ASSIGN(PrefService); | 357 DISALLOW_COPY_AND_ASSIGN(PrefService); |
365 }; | 358 }; |
366 | 359 |
367 #endif // BASE_PREFS_PREF_SERVICE_H_ | 360 #endif // BASE_PREFS_PREF_SERVICE_H_ |
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