src/chrome/browser/chromeos/offline/offline_load_page.cc

   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/chromeos/offline/offline_load_page.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/shell_delegate.h"
   9 #include "ash/system/tray/system_tray_delegate.h"
  10 #include "base/i18n/rtl.h"
  11 #include "base/metrics/histogram.h"
  12 #include "base/prefs/pref_service.h"
  13 #include "base/strings/string_piece.h"
  14 #include "base/strings/stringprintf.h"
  15 #include "base/strings/utf_string_conversions.h"
  16 #include "base/values.h"
  17 #include "chrome/browser/browser_process.h"
  18 #include "chrome/browser/chrome_notification_types.h"
  19 #include "chrome/browser/extensions/extension_service.h"
  20 #include "chrome/browser/extensions/extension_system.h"
  21 #include "chrome/browser/profiles/profile.h"
  22 #include "chrome/browser/renderer_preferences_util.h"
  23 #include "chrome/browser/tab_contents/tab_util.h"
  24 #include "chrome/common/extensions/extension.h"
  25 #include "chrome/common/extensions/extension_constants.h"
  26 #include "chrome/common/extensions/extension_icon_set.h"
  27 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
  28 #include "chrome/common/localized_error.h"
  29 #include "chrome/common/pref_names.h"
  30 #include "chrome/common/url_constants.h"
  31 #include "content/public/browser/browser_thread.h"
  32 #include "content/public/browser/interstitial_page.h"
  33 #include "content/public/browser/notification_types.h"
  34 #include "content/public/browser/web_contents.h"
  35 #include "grit/browser_resources.h"
  36 #include "grit/chromium_strings.h"
  37 #include "grit/generated_resources.h"
  38 #include "grit/google_chrome_strings.h"
  39 #include "grit/theme_resources.h"
  40 #include "net/base/escape.h"
  41 #include "net/base/net_errors.h"
  42 #include "ui/base/l10n/l10n_util.h"
  43 #include "ui/base/resource/resource_bundle.h"
  44 #include "ui/base/webui/jstemplate_builder.h"
  45 #include "ui/base/webui/web_ui_util.h"
  46
  47 using content::BrowserThread;
  48 using content::InterstitialPage;
  49 using content::WebContents;
  50
  51 namespace {
  52
  53 // A utility function to set the dictionary's value given by |resource_id|.
  54 void SetString(DictionaryValue* strings, const char* name, int resource_id) {
  55   strings->SetString(name, l10n_util::GetStringUTF16(resource_id));
  56 }
  57
  58 }  // namespace
  59
  60 namespace chromeos {
  61
  62 OfflineLoadPage::OfflineLoadPage(WebContents* web_contents,
  63                                  const GURL& url,
  64                                  const CompletionCallback& callback)
  65     : callback_(callback),
  66       proceeded_(false),
  67       web_contents_(web_contents),
  68       url_(url) {
  69   net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
  70   interstitial_page_ = InterstitialPage::Create(web_contents, true, url, this);
  71 }
  72
  73 OfflineLoadPage::~OfflineLoadPage() {
  74   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  75   net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
  76 }
  77
  78 void OfflineLoadPage::Show() {
  79   interstitial_page_->Show();
  80 }
  81
  82 std::string OfflineLoadPage::GetHTMLContents() {
  83   // Use a local error page.
  84   int resource_id;
  85   base::DictionaryValue error_strings;
  86
  87   // The offline page for app has icons and slightly different message.
  88   Profile* profile = Profile::FromBrowserContext(
  89       web_contents_->GetBrowserContext());
  90   DCHECK(profile);
  91   const extensions::Extension* extension = NULL;
  92   ExtensionService* extensions_service =
  93       extensions::ExtensionSystem::Get(profile)->extension_service();
  94
  95   // Extension service does not exist in test.
  96   if (extensions_service)
  97     extension = extensions_service->extensions()->GetHostedAppByURL(url_);
  98
  99   if (extension && !extension->from_bookmark()) {
 100     LocalizedError::GetAppErrorStrings(url_, extension, &error_strings);
 101     resource_id = IDR_OFFLINE_APP_LOAD_HTML;
 102   } else {
 103     const std::string locale = g_browser_process->GetApplicationLocale();
 104     const std::string accept_languages =
 105         profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
 106     LocalizedError::GetStrings(net::ERR_INTERNET_DISCONNECTED,
 107                                net::kErrorDomain, url_, false, locale,
 108                                accept_languages, &error_strings);
 109     resource_id = IDR_OFFLINE_NET_LOAD_HTML;
 110   }
 111
 112   const base::StringPiece template_html(
 113       ResourceBundle::GetSharedInstance().GetRawDataResource(
 114           resource_id));
 115   // "t" is the id of the templates root node.
 116   return webui::GetTemplatesHtml(template_html, &error_strings, "t");
 117 }
 118
 119  void OfflineLoadPage::OverrideRendererPrefs(
 120       content::RendererPreferences* prefs) {
 121   Profile* profile = Profile::FromBrowserContext(
 122       web_contents_->GetBrowserContext());
 123   renderer_preferences_util::UpdateFromSystemSettings(prefs, profile);
 124 }
 125
 126 void OfflineLoadPage::OnProceed() {
 127   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 128   proceeded_ = true;
 129   NotifyBlockingPageComplete(true);
 130 }
 131
 132 void OfflineLoadPage::OnDontProceed() {
 133   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 134   // Ignore if it's already proceeded.
 135   if (proceeded_)
 136     return;
 137   NotifyBlockingPageComplete(false);
 138 }
 139
 140 void OfflineLoadPage::CommandReceived(const std::string& cmd) {
 141   std::string command(cmd);
 142   // The Jasonified response has quotes, remove them.
 143   if (command.length() > 1 && command[0] == '"') {
 144     command = command.substr(1, command.length() - 2);
 145   }
 146   // TODO(oshima): record action for metrics.
 147   if (command == "open_network_settings") {
 148     ash::Shell::GetInstance()->system_tray_delegate()->ShowNetworkSettings("");
 149   } else {
 150     LOG(WARNING) << "Unknown command:" << cmd;
 151   }
 152 }
 153
 154 void OfflineLoadPage::NotifyBlockingPageComplete(bool proceed) {
 155   BrowserThread::PostTask(
 156       BrowserThread::IO, FROM_HERE, base::Bind(callback_, proceed));
 157 }
 158
 159 void OfflineLoadPage::OnConnectionTypeChanged(
 160     net::NetworkChangeNotifier::ConnectionType type) {
 161   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 162   const bool online = type != net::NetworkChangeNotifier::CONNECTION_NONE;
 163   DVLOG(1) << "ConnectionTypeObserver notification received: state="
 164            << (online ? "online" : "offline");
 165   if (online) {
 166     net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
 167     interstitial_page_->Proceed();
 168   }
 169 }
 170
 171 }  // namespace chromeos