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