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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 #include "chrome/browser/prefs/chrome_pref_service_builder.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "base/file_path.h" | |
9 #include "base/file_util.h" | |
10 #include "base/metrics/histogram.h" | |
11 #include "base/prefs/default_pref_store.h" | |
12 #include "base/prefs/json_pref_store.h" | |
13 #include "chrome/browser/policy/configuration_policy_pref_store.h" | |
14 #include "chrome/browser/prefs/command_line_pref_store.h" | |
15 #include "chrome/browser/prefs/pref_model_associator.h" | |
16 #include "chrome/browser/prefs/pref_notifier_impl.h" | |
17 #include "chrome/browser/prefs/pref_service.h" | |
18 #include "chrome/browser/prefs/pref_value_store.h" | |
19 #include "chrome/browser/profiles/profile.h" | |
20 #include "chrome/browser/ui/profile_error_dialog.h" | |
21 #include "content/public/browser/browser_context.h" | |
22 #include "content/public/browser/browser_thread.h" | |
23 #include "grit/chromium_strings.h" | |
24 #include "grit/generated_resources.h" | |
25 #include "ui/base/l10n/l10n_util.h" | |
26 | |
27 using content::BrowserContext; | |
28 using content::BrowserThread; | |
29 | |
30 namespace { | |
31 | |
32 // Forwards a notification after a PostMessage so that we can wait for the | |
33 // MessageLoop to run. | |
34 void NotifyReadError(int message_id) { | |
35 ShowProfileErrorDialog(message_id); | |
36 } | |
37 | |
38 // Shows notifications which correspond to PersistentPrefStore's reading errors. | |
39 void HandleReadError(PersistentPrefStore::PrefReadError error) { | |
40 if (error != PersistentPrefStore::PREF_READ_ERROR_NONE) { | |
41 // Failing to load prefs on startup is a bad thing(TM). See bug 38352 for | |
42 // an example problem that this can cause. | |
43 // Do some diagnosis and try to avoid losing data. | |
44 int message_id = 0; | |
45 if (error <= PersistentPrefStore::PREF_READ_ERROR_JSON_TYPE) { | |
46 message_id = IDS_PREFERENCES_CORRUPT_ERROR; | |
47 } else if (error != PersistentPrefStore::PREF_READ_ERROR_NO_FILE) { | |
48 message_id = IDS_PREFERENCES_UNREADABLE_ERROR; | |
49 } | |
50 | |
51 if (message_id) { | |
52 BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, | |
53 base::Bind(&NotifyReadError, message_id)); | |
54 } | |
55 UMA_HISTOGRAM_ENUMERATION("PrefService.ReadError", error, | |
56 PersistentPrefStore::PREF_READ_ERROR_MAX_ENUM); | |
57 } | |
58 } | |
59 | |
60 } // namespace | |
61 | |
62 // TODO(joi): Find a better home for this. | |
63 PrefServiceBase* PrefServiceBase::FromBrowserContext(BrowserContext* context) { | |
64 return static_cast<Profile*>(context)->GetPrefs(); | |
65 } | |
66 | |
67 ChromePrefServiceBuilder::ChromePrefServiceBuilder() { | |
68 ResetDefaultState(); | |
69 } | |
70 | |
71 ChromePrefServiceBuilder::~ChromePrefServiceBuilder() { | |
72 } | |
73 | |
74 PrefService* ChromePrefServiceBuilder::CreateChromePrefs( | |
75 const FilePath& pref_filename, | |
76 base::SequencedTaskRunner* pref_io_task_runner, | |
77 policy::PolicyService* policy_service, | |
78 PrefStore* extension_prefs, | |
79 bool async) { | |
80 #if defined(OS_LINUX) | |
81 // We'd like to see what fraction of our users have the preferences | |
82 // stored on a network file system, as we've had no end of troubles | |
83 // with NFS/AFS. | |
84 // TODO(evanm): remove this once we've collected state. | |
85 file_util::FileSystemType fstype; | |
86 if (file_util::GetFileSystemType(pref_filename.DirName(), &fstype)) { | |
87 UMA_HISTOGRAM_ENUMERATION("PrefService.FileSystemType", | |
88 static_cast<int>(fstype), | |
89 file_util::FILE_SYSTEM_TYPE_COUNT); | |
90 } | |
91 #endif | |
92 | |
93 #if defined(ENABLE_CONFIGURATION_POLICY) | |
94 using policy::ConfigurationPolicyPrefStore; | |
95 WithManagedPrefs( | |
96 ConfigurationPolicyPrefStore::CreateMandatoryPolicyPrefStore( | |
97 policy_service)); | |
98 WithRecommendedPrefs( | |
99 ConfigurationPolicyPrefStore::CreateRecommendedPolicyPrefStore( | |
100 policy_service)); | |
101 #endif // ENABLE_CONFIGURATION_POLICY | |
102 | |
103 WithAsync(async); | |
104 WithCommandLinePrefs( | |
105 new CommandLinePrefStore(CommandLine::ForCurrentProcess())); | |
106 WithUserPrefs(new JsonPrefStore(pref_filename, pref_io_task_runner)); | |
107 | |
108 PrefService* pref_service = Create(); | |
109 ResetDefaultState(); | |
110 return pref_service; | |
111 } | |
112 | |
113 void ChromePrefServiceBuilder::ResetDefaultState() { | |
114 WithLocalizedStringMethod(base::Bind(&l10n_util::GetStringUTF8)); | |
115 WithReadErrorCallback(base::Bind(&HandleReadError)); | |
116 WithSyncAssociator(new PrefModelAssociator()); | |
117 } | |
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