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
|
// Copyright (c) 2010 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/host_zoom_map.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/browser/pref_service.h"
#include "chrome/browser/profile.h"
#include "chrome/browser/scoped_pref_update.h"
#include "chrome/common/notification_details.h"
#include "chrome/common/notification_source.h"
#include "chrome/common/notification_type.h"
#include "chrome/common/pref_names.h"
#include "googleurl/src/gurl.h"
#include "net/base/net_util.h"
HostZoomMap::HostZoomMap(Profile* profile)
: profile_(profile),
updating_preferences_(false) {
Load();
registrar_.Add(this, NotificationType::PROFILE_DESTROYED,
Source<Profile>(profile));
profile_->GetPrefs()->AddPrefObserver(prefs::kPerHostZoomLevels, this);
}
void HostZoomMap::Load() {
if (!profile_)
return;
AutoLock auto_lock(lock_);
host_zoom_levels_.clear();
const DictionaryValue* host_zoom_dictionary =
profile_->GetPrefs()->GetDictionary(prefs::kPerHostZoomLevels);
// Careful: The returned value could be NULL if the pref has never been set.
if (host_zoom_dictionary != NULL) {
for (DictionaryValue::key_iterator i(host_zoom_dictionary->begin_keys());
i != host_zoom_dictionary->end_keys(); ++i) {
std::wstring wide_host(*i);
int zoom_level = 0;
bool success = host_zoom_dictionary->GetIntegerWithoutPathExpansion(
wide_host, &zoom_level);
DCHECK(success);
host_zoom_levels_[WideToUTF8(wide_host)] = zoom_level;
}
}
}
// static
void HostZoomMap::RegisterUserPrefs(PrefService* prefs) {
prefs->RegisterDictionaryPref(prefs::kPerHostZoomLevels);
}
int HostZoomMap::GetZoomLevel(const GURL& url) const {
std::string host(net::GetHostOrSpecFromURL(url));
AutoLock auto_lock(lock_);
HostZoomLevels::const_iterator i(host_zoom_levels_.find(host));
return (i == host_zoom_levels_.end()) ? 0 : i->second;
}
void HostZoomMap::SetZoomLevel(const GURL& url, int level) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
if (!profile_)
return;
std::string host(net::GetHostOrSpecFromURL(url));
{
AutoLock auto_lock(lock_);
if (level == 0)
host_zoom_levels_.erase(host);
else
host_zoom_levels_[host] = level;
}
updating_preferences_ = true;
{
ScopedPrefUpdate update(profile_->GetPrefs(), prefs::kPerHostZoomLevels);
DictionaryValue* host_zoom_dictionary =
profile_->GetPrefs()->GetMutableDictionary(prefs::kPerHostZoomLevels);
std::wstring wide_host(UTF8ToWide(host));
if (level == 0) {
host_zoom_dictionary->RemoveWithoutPathExpansion(wide_host, NULL);
} else {
host_zoom_dictionary->SetWithoutPathExpansion(
wide_host,
Value::CreateIntegerValue(level));
}
}
updating_preferences_ = false;
}
void HostZoomMap::ResetToDefaults() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
if (!profile_)
return;
{
AutoLock auto_lock(lock_);
host_zoom_levels_.clear();
}
updating_preferences_ = true;
profile_->GetPrefs()->ClearPref(prefs::kPerHostZoomLevels);
updating_preferences_ = false;
}
void HostZoomMap::Shutdown() {
if (!profile_)
return;
registrar_.Remove(this,
NotificationType::PROFILE_DESTROYED,
Source<Profile>(profile_));
profile_->GetPrefs()->RemovePrefObserver(prefs::kPerHostZoomLevels, this);
profile_ = NULL;
}
void HostZoomMap::Observe(
NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
// If the profile is going away, we need to stop using it.
if (type == NotificationType::PROFILE_DESTROYED) {
Shutdown();
return;
}
if (type == NotificationType::PREF_CHANGED) {
// If we are updating our own preference, don't reload.
if (updating_preferences_)
return;
std::wstring* name = Details<std::wstring>(details).ptr();
if (prefs::kPerHostZoomLevels == *name) {
Load();
return;
}
}
NOTREACHED() << "Unexpected preference observed.";
}
HostZoomMap::~HostZoomMap() {
Shutdown();
}
|
