chrome/browser/plugin_data_remover_helper.cc

   1 // Copyright (c) 2011 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/plugin_data_remover_helper.h"
   6
   7 #include <string>
   8
   9 #include "base/bind.h"
  10 #include "chrome/browser/plugin_prefs.h"
  11 #include "chrome/browser/prefs/pref_service.h"
  12 #include "chrome/browser/profiles/profile.h"
  13 #include "chrome/common/chrome_notification_types.h"
  14 #include "content/public/browser/browser_thread.h"
  15 #include "content/public/browser/notification_source.h"
  16 #include "content/public/browser/plugin_data_remover.h"
  17 #include "content/public/browser/plugin_service.h"
  18 #include "webkit/plugins/webplugininfo.h"
  19
  20 using content::BrowserThread;
  21 using content::PluginService;
  22
  23 PluginDataRemoverHelper::PluginDataRemoverHelper()
  24     : profile_(NULL),
  25       ALLOW_THIS_IN_INITIALIZER_LIST(factory_(this)) {}
  26
  27 PluginDataRemoverHelper::~PluginDataRemoverHelper() {
  28 }
  29
  30 void PluginDataRemoverHelper::Init(const char* pref_name,
  31                                    Profile* profile,
  32                                    content::NotificationObserver* observer) {
  33   pref_.Init(pref_name, profile->GetPrefs(), observer);
  34   profile_ = profile;
  35   registrar_.Add(this, chrome::NOTIFICATION_PLUGIN_ENABLE_STATUS_CHANGED,
  36                  content::Source<Profile>(profile));
  37   StartUpdate();
  38 }
  39
  40 // static
  41 bool PluginDataRemoverHelper::IsSupported(PluginPrefs* plugin_prefs) {
  42   webkit::WebPluginInfo plugin;
  43   return content::PluginDataRemover::IsSupported(&plugin) &&
  44       plugin_prefs->IsPluginEnabled(plugin);
  45 }
  46
  47 void PluginDataRemoverHelper::Observe(
  48     int type,
  49     const content::NotificationSource& source,
  50     const content::NotificationDetails& details) {
  51   if (type == chrome::NOTIFICATION_PLUGIN_ENABLE_STATUS_CHANGED) {
  52     StartUpdate();
  53   } else {
  54     NOTREACHED();
  55   }
  56 }
  57
  58 void PluginDataRemoverHelper::StartUpdate() {
  59   PluginService::GetInstance()->GetPlugins(
  60       base::Bind(&PluginDataRemoverHelper::GotPlugins, factory_.GetWeakPtr(),
  61                  make_scoped_refptr(PluginPrefs::GetForProfile(profile_))));
  62 }
  63
  64 void PluginDataRemoverHelper::GotPlugins(
  65     scoped_refptr<PluginPrefs> plugin_prefs,
  66     const std::vector<webkit::WebPluginInfo>& plugins) {
  67   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  68   bool supported = IsSupported(plugin_prefs);
  69   // Set the value on the PrefService instead of through the PrefMember to
  70   // notify observers if it changed.
  71   profile_->GetPrefs()->SetBoolean(pref_.GetPrefName().c_str(), supported);
  72 }