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| 1 // Copyright (c) 2010 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 #include "base/prefs/public/pref_change_registrar.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/logging.h" | |
| 9 #include "base/prefs/pref_service.h" | |
| 10 | |
| 11 PrefChangeRegistrar::PrefChangeRegistrar() : service_(NULL) {} | |
| 12 | |
| 13 PrefChangeRegistrar::~PrefChangeRegistrar() { | |
| 14 // If you see an invalid memory access in this destructor, this | |
| 15 // PrefChangeRegistrar might be subscribed to an OffTheRecordProfileImpl that | |
| 16 // has been destroyed. This should not happen any more but be warned. | |
| 17 // Feel free to contact battre@chromium.org in case this happens. | |
| 18 RemoveAll(); | |
| 19 } | |
| 20 | |
| 21 void PrefChangeRegistrar::Init(PrefService* service) { | |
| 22 DCHECK(IsEmpty() || service_ == service); | |
| 23 service_ = service; | |
| 24 } | |
| 25 | |
| 26 void PrefChangeRegistrar::Add(const char* path, | |
| 27 const base::Closure& obs) { | |
| 28 Add(path, base::Bind(&PrefChangeRegistrar::InvokeUnnamedCallback, obs)); | |
| 29 } | |
| 30 | |
| 31 void PrefChangeRegistrar::Add(const char* path, | |
| 32 const NamedChangeCallback& obs) { | |
| 33 if (!service_) { | |
| 34 NOTREACHED(); | |
| 35 return; | |
| 36 } | |
| 37 DCHECK(!IsObserved(path)) << "Already had this pref registered."; | |
| 38 | |
| 39 service_->AddPrefObserver(path, this); | |
| 40 observers_[path] = obs; | |
| 41 } | |
| 42 | |
| 43 void PrefChangeRegistrar::Remove(const char* path) { | |
| 44 DCHECK(IsObserved(path)); | |
| 45 | |
| 46 observers_.erase(path); | |
| 47 service_->RemovePrefObserver(path, this); | |
| 48 } | |
| 49 | |
| 50 void PrefChangeRegistrar::RemoveAll() { | |
| 51 for (ObserverMap::const_iterator it = observers_.begin(); | |
| 52 it != observers_.end(); ++it) { | |
| 53 service_->RemovePrefObserver(it->first.c_str(), this); | |
| 54 } | |
| 55 | |
| 56 observers_.clear(); | |
| 57 } | |
| 58 | |
| 59 bool PrefChangeRegistrar::IsEmpty() const { | |
| 60 return observers_.empty(); | |
| 61 } | |
| 62 | |
| 63 bool PrefChangeRegistrar::IsObserved(const std::string& pref) { | |
| 64 return observers_.find(pref) != observers_.end(); | |
| 65 } | |
| 66 | |
| 67 bool PrefChangeRegistrar::IsManaged() { | |
| 68 for (ObserverMap::const_iterator it = observers_.begin(); | |
| 69 it != observers_.end(); ++it) { | |
| 70 const PrefService::Preference* pref = | |
| 71 service_->FindPreference(it->first.c_str()); | |
| 72 if (pref && pref->IsManaged()) | |
| 73 return true; | |
| 74 } | |
| 75 return false; | |
| 76 } | |
| 77 | |
| 78 void PrefChangeRegistrar::OnPreferenceChanged(PrefService* service, | |
| 79 const std::string& pref) { | |
| 80 if (IsObserved(pref)) | |
| 81 observers_[pref].Run(pref); | |
| 82 } | |
| 83 | |
| 84 void PrefChangeRegistrar::InvokeUnnamedCallback(const base::Closure& callback, | |
| 85 const std::string& pref_name) { | |
| 86 callback.Run(); | |
| 87 } | |
| 88 | |
| 89 PrefService* PrefChangeRegistrar::prefs() { | |
| 90 return service_; | |
| 91 } | |
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Chromium Code Reviews
Issue 12789006:
base/prefs: Remove the public/ directory and move the files to //base/prefs. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src