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/common/extensions/extension_constants.h"
  24 #include "chrome/common/localized_error.h"
  25 #include "chrome/common/pref_names.h"
  26 #include "chrome/common/url_constants.h"
  27 #include "chrome/grit/browser_resources.h"
  28 #include "components/error_page/common/error_page_params.h"
  29 #include "content/public/browser/browser_thread.h"
  30 #include "content/public/browser/interstitial_page.h"
  31 #include "content/public/browser/notification_types.h"
  32 #include "content/public/browser/web_contents.h"
  33 #include "content/public/common/renderer_preferences.h"
  34 #include "extensions/browser/extension_registry.h"
  35 #include "extensions/browser/extension_system.h"
  36 #include "extensions/common/extension.h"
  37 #include "extensions/common/extension_icon_set.h"
  38 #include "extensions/common/manifest_handlers/icons_handler.h"
  39 #include "net/base/escape.h"
  40 #include "net/base/net_errors.h"
  41 #include "ui/base/resource/resource_bundle.h"
  42 #include "ui/base/webui/jstemplate_builder.h"
  43 #include "ui/base/webui/web_ui_util.h"
  44
  45 using content::BrowserThread;
  46 using content::InterstitialPage;
  47 using content::WebContents;
  48
  49 namespace chromeos {
  50
  51 OfflineLoadPage::OfflineLoadPage(WebContents* web_contents,
  52                                  const GURL& url,
  53                                  const CompletionCallback& callback)
  54     : callback_(callback),
  55       proceeded_(false),
  56       web_contents_(web_contents),
  57       url_(url) {
  58   net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
  59   interstitial_page_ = InterstitialPage::Create(web_contents, true, url, this);
  60 }
  61
  62 OfflineLoadPage::~OfflineLoadPage() {
  63   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  64   net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
  65 }
  66
  67 void OfflineLoadPage::Show() {
  68   interstitial_page_->Show();
  69 }
  70
  71 std::string OfflineLoadPage::GetHTMLContents() {
  72   // Use a local error page.
  73   int resource_id;
  74   base::DictionaryValue error_strings;
  75
  76   // The offline page for app has icons and slightly different message.
  77   Profile* profile = Profile::FromBrowserContext(
  78       web_contents_->GetBrowserContext());
  79   DCHECK(profile);
  80   const extensions::Extension* extension = extensions::ExtensionRegistry::Get(
  81       profile)->enabled_extensions().GetHostedAppByURL(url_);
  82   const std::string& locale = g_browser_process->GetApplicationLocale();
  83   if (extension && !extension->from_bookmark()) {
  84     LocalizedError::GetAppErrorStrings(url_, extension, locale, &error_strings);
  85     resource_id = IDR_OFFLINE_APP_LOAD_HTML;
  86   } else {
  87     const std::string accept_languages =
  88         profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
  89     LocalizedError::GetStrings(net::ERR_INTERNET_DISCONNECTED,
  90                                net::kErrorDomain, url_, false, false, locale,
  91                                accept_languages,
  92                                scoped_ptr<error_page::ErrorPageParams>(),
  93                                &error_strings);
  94     resource_id = IDR_OFFLINE_NET_LOAD_HTML;
  95   }
  96
  97   std::string template_html = ResourceBundle::GetSharedInstance()
  98                                   .GetRawDataResource(resource_id)
  99                                   .as_string();
 100   webui::AppendWebUiCssTextDefaults(&template_html);
 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_CURRENTLY_ON(BrowserThread::UI);
 115   proceeded_ = true;
 116   NotifyBlockingPageComplete(true);
 117 }
 118
 119 void OfflineLoadPage::OnDontProceed() {
 120   DCHECK_CURRENTLY_ON(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()
 136         ->system_tray_delegate()
 137         ->ShowNetworkSettingsForGuid("");
 138   } else if (command == "open_connectivity_diagnostics") {
 139     Profile* profile = Profile::FromBrowserContext(
 140         web_contents_->GetBrowserContext());
 141     const extensions::Extension* extension =
 142         extensions::ExtensionRegistry::Get(profile)->GetExtensionById(
 143             "kodldpbjkkmmnilagfdheibampofhaom",
 144             extensions::ExtensionRegistry::EVERYTHING);
 145     apps::LaunchPlatformAppWithUrl(profile, extension, "",
 146                                    GURL::EmptyGURL(), GURL::EmptyGURL());
 147
 148   } else {
 149     LOG(WARNING) << "Unknown command:" << cmd;
 150   }
 151 }
 152
 153 void OfflineLoadPage::NotifyBlockingPageComplete(bool proceed) {
 154   BrowserThread::PostTask(
 155       BrowserThread::IO, FROM_HERE, base::Bind(callback_, proceed));
 156 }
 157
 158 void OfflineLoadPage::OnConnectionTypeChanged(
 159     net::NetworkChangeNotifier::ConnectionType type) {
 160   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 161   const bool online = type != net::NetworkChangeNotifier::CONNECTION_NONE;
 162   DVLOG(1) << "ConnectionTypeObserver notification received: state="
 163            << (online ? "online" : "offline");
 164   if (online) {
 165     net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
 166     interstitial_page_->Proceed();
 167   }
 168 }
 169
 170 }  // namespace chromeos