extensions/browser/extension_pref_store.cc

   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 #include "extensions/browser/extension_pref_store.h"
   6
   7 #include "base/values.h"
   8 #include "extensions/browser/extension_pref_value_map.h"
   9
  10 ExtensionPrefStore::ExtensionPrefStore(
  11     ExtensionPrefValueMap* extension_pref_value_map,
  12     bool incognito_pref_store)
  13     : extension_pref_value_map_(extension_pref_value_map),
  14       incognito_pref_store_(incognito_pref_store) {
  15   extension_pref_value_map_->AddObserver(this);
  16 }
  17
  18 void ExtensionPrefStore::OnInitializationCompleted() {
  19   NotifyInitializationCompleted();
  20 }
  21
  22 void ExtensionPrefStore::OnPrefValueChanged(const std::string& key) {
  23   CHECK(extension_pref_value_map_);
  24   const base::Value *winner =
  25       extension_pref_value_map_->GetEffectivePrefValue(key,
  26                                                        incognito_pref_store_,
  27                                                        NULL);
  28   if (winner) {
  29     SetValue(key, winner->CreateDeepCopy(),
  30              WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
  31   } else {
  32     RemoveValue(key, WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
  33   }
  34 }
  35
  36 void ExtensionPrefStore::OnExtensionPrefValueMapDestruction() {
  37   CHECK(extension_pref_value_map_);
  38   extension_pref_value_map_->RemoveObserver(this);
  39   extension_pref_value_map_ = NULL;
  40 }
  41
  42 ExtensionPrefStore::~ExtensionPrefStore() {
  43   if (extension_pref_value_map_)
  44     extension_pref_value_map_->RemoveObserver(this);
  45 }