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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/plugins/plugin_status_pref_setter.h"
6 
7 #include "base/bind.h"
8 #include "base/prefs/pref_service.h"
9 #include "chrome/browser/chrome_notification_types.h"
10 #include "chrome/browser/pepper_flash_settings_manager.h"
11 #include "chrome/browser/plugins/plugin_data_remover_helper.h"
12 #include "chrome/browser/plugins/plugin_prefs.h"
13 #include "chrome/browser/profiles/profile.h"
14 #include "chrome/common/pref_names.h"
15 #include "content/public/browser/browser_thread.h"
16 #include "content/public/browser/notification_source.h"
17 #include "content/public/browser/plugin_service.h"
18 #include "content/public/common/webplugininfo.h"
19 
20 using content::BrowserThread;
21 using content::PluginService;
22 
PluginStatusPrefSetter()23 PluginStatusPrefSetter::PluginStatusPrefSetter()
24     : profile_(NULL),
25       factory_(this) {}
26 
~PluginStatusPrefSetter()27 PluginStatusPrefSetter::~PluginStatusPrefSetter() {
28 }
29 
Init(Profile * profile,const BooleanPrefMember::NamedChangeCallback & observer)30 void PluginStatusPrefSetter::Init(
31     Profile* profile,
32     const BooleanPrefMember::NamedChangeCallback& observer) {
33   clear_plugin_lso_data_enabled_.Init(prefs::kClearPluginLSODataEnabled,
34                                       profile->GetPrefs(), observer);
35   pepper_flash_settings_enabled_.Init(prefs::kPepperFlashSettingsEnabled,
36                                       profile->GetPrefs(), observer);
37   profile_ = profile;
38   registrar_.Add(this, chrome::NOTIFICATION_PLUGIN_ENABLE_STATUS_CHANGED,
39                  content::Source<Profile>(profile));
40   StartUpdate();
41 }
42 
Observe(int type,const content::NotificationSource & source,const content::NotificationDetails & details)43 void PluginStatusPrefSetter::Observe(
44     int type,
45     const content::NotificationSource& source,
46     const content::NotificationDetails& details) {
47   if (type == chrome::NOTIFICATION_PLUGIN_ENABLE_STATUS_CHANGED) {
48     StartUpdate();
49   } else {
50     NOTREACHED();
51   }
52 }
53 
StartUpdate()54 void PluginStatusPrefSetter::StartUpdate() {
55   PluginService::GetInstance()->GetPlugins(
56       base::Bind(&PluginStatusPrefSetter::GotPlugins, factory_.GetWeakPtr(),
57                  PluginPrefs::GetForProfile(profile_)));
58 }
59 
GotPlugins(scoped_refptr<PluginPrefs> plugin_prefs,const std::vector<content::WebPluginInfo> & plugins)60 void PluginStatusPrefSetter::GotPlugins(
61     scoped_refptr<PluginPrefs> plugin_prefs,
62     const std::vector<content::WebPluginInfo>& plugins) {
63   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
64   // Set the values on the PrefService instead of through the PrefMembers to
65   // notify observers if they changed.
66   profile_->GetPrefs()->SetBoolean(
67       clear_plugin_lso_data_enabled_.GetPrefName().c_str(),
68       PluginDataRemoverHelper::IsSupported(plugin_prefs.get()));
69   profile_->GetPrefs()->SetBoolean(
70       pepper_flash_settings_enabled_.GetPrefName().c_str(),
71       PepperFlashSettingsManager::IsPepperFlashInUse(plugin_prefs.get(), NULL));
72 }
73