1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/sync/glue/preference_change_processor.h"
#include "base/string_util.h"
#include "chrome/browser/profile.h"
#include "chrome/browser/sync/profile_sync_service.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/pref_names.h"
namespace browser_sync {
PreferenceChangeProcessor::PreferenceChangeProcessor(
UnrecoverableErrorHandler* error_handler)
: ChangeProcessor(error_handler),
pref_service_(NULL),
model_associator_(NULL) {
}
void PreferenceChangeProcessor::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(running());
DCHECK(NotificationType::PREF_CHANGED == type);
DCHECK_EQ(pref_service_, Source<PrefService>(source).ptr());
std::wstring* name = Details<std::wstring>(details).ptr();
const PrefService::Preference* preference =
pref_service_->FindPreference((*name).c_str());
DCHECK(preference);
sync_api::WriteTransaction trans(share_handle());
sync_api::WriteNode sync_node(&trans);
int64 sync_id = model_associator_->GetSyncIdForChromeId(*name);
if (sync_api::kInvalidId == sync_id) {
sync_api::ReadNode root_node(&trans);
if (!root_node.InitByTagLookup(kPreferencesTag)) {
LOG(ERROR) << "Preference root node lookup failed.";
error_handler()->OnUnrecoverableError();
return;
}
if (!sync_node.InitByCreation(syncable::PREFERENCES, root_node, NULL)) {
LOG(ERROR) << "Preference node creation failed.";
error_handler()->OnUnrecoverableError();
return;
}
} else {
if (!sync_node.InitByIdLookup(sync_id)) {
LOG(ERROR) << "Preference node lookup failed.";
error_handler()->OnUnrecoverableError();
return;
}
}
if (!WritePreference(&sync_node, WideToUTF8(*name),
preference->GetValue())) {
LOG(ERROR) << "Failed to update preference node.";
error_handler()->OnUnrecoverableError();
return;
}
if (sync_api::kInvalidId == sync_id) {
model_associator_->Associate(*name, sync_node.GetId());
}
}
void PreferenceChangeProcessor::ApplyChangesFromSyncModel(
const sync_api::BaseTransaction* trans,
const sync_api::SyncManager::ChangeRecord* changes,
int change_count) {
if (!running())
return;
StopObserving();
// TODO(sync): Remove this once per-datatype filtering is working.
sync_api::ReadNode root_node(trans);
if (!root_node.InitByTagLookup(kPreferencesTag)) {
LOG(ERROR) << "Preference root node lookup failed.";
error_handler()->OnUnrecoverableError();
return;
}
sync_api::ReadNode sync_node(trans);
std::string name;
for (int i = 0; i < change_count; ++i) {
if (!sync_node.InitByIdLookup(changes[i].id)) {
LOG(ERROR) << "Preference node lookup failed.";
error_handler()->OnUnrecoverableError();
return;
}
// TODO(sync): Remove this once per-datatype filtering is working.
// Check that the changed node is a child of the preferences folder.
if (root_node.GetId() != sync_node.GetParentId()) continue;
scoped_ptr<Value> value(ReadPreference(&sync_node, &name));
if (sync_api::SyncManager::ChangeRecord::ACTION_DELETE ==
changes[i].action) {
pref_service_->ClearPref(UTF8ToWide(name).c_str());
} else {
if (pref_service_->HasPrefPath(UTF8ToWide(name).c_str())) {
pref_service_->Set(UTF8ToWide(name).c_str(), *value);
}
}
}
StartObserving();
}
bool PreferenceChangeProcessor::WritePreference(
sync_api::WriteNode* node,
const std::string& name,
const Value* value) {
// TODO(albertb): Implement me!
return true;
}
Value* PreferenceChangeProcessor::ReadPreference(
sync_api::ReadNode* node,
std::string* name) {
// TODO(albertb): Implement me!
return NULL;
}
void PreferenceChangeProcessor::StartImpl(Profile* profile) {
pref_service_ = profile->GetPrefs();
StartObserving();
}
void PreferenceChangeProcessor::StopImpl() {
StopObserving();
pref_service_ = NULL;
}
void PreferenceChangeProcessor::StartObserving() {
DCHECK(model_associator_ && pref_service_);
for (std::set<std::wstring>::const_iterator it =
model_associator_->synced_preferences().begin();
it != model_associator_->synced_preferences().end(); ++it) {
pref_service_->AddPrefObserver((*it).c_str(), this);
}
}
void PreferenceChangeProcessor::StopObserving() {
DCHECK(model_associator_ && pref_service_);
for (std::set<std::wstring>::const_iterator it =
model_associator_->synced_preferences().begin();
it != model_associator_->synced_preferences().end(); ++it) {
pref_service_->RemovePrefObserver((*it).c_str(), this);
}
}
} // namespace browser_sync
|
