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(BrowserThread::CurrentlyOn(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   if (extension && !extension->from_bookmark()) {
  83     LocalizedError::GetAppErrorStrings(url_, extension, &error_strings);
  84     resource_id = IDR_OFFLINE_APP_LOAD_HTML;
  85   } else {
  86     const std::string locale = g_browser_process->GetApplicationLocale();
  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   const base::StringPiece template_html(
  98       ResourceBundle::GetSharedInstance().GetRawDataResource(
  99           resource_id));
 100   // "t" is the id of the templates root node.
 101   return webui::GetTemplatesHtml(template_html, &error_strings, "t");
 102 }
 103
 104 void OfflineLoadPage::OverrideRendererPrefs(
 105     content::RendererPreferences* prefs) {
 106   Profile* profile = Profile::FromBrowserContext(
 107       web_contents_->GetBrowserContext());
 108   renderer_preferences_util::UpdateFromSystemSettings(
 109       prefs, profile, web_contents_);
 110 }
 111
 112 void OfflineLoadPage::OnProceed() {
 113   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 114   proceeded_ = true;
 115   NotifyBlockingPageComplete(true);
 116 }
 117
 118 void OfflineLoadPage::OnDontProceed() {
 119   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 120   // Ignore if it's already proceeded.
 121   if (proceeded_)
 122     return;
 123   NotifyBlockingPageComplete(false);
 124 }
 125
 126 void OfflineLoadPage::CommandReceived(const std::string& cmd) {
 127   std::string command(cmd);
 128   // The Jasonified response has quotes, remove them.
 129   if (command.length() > 1 && command[0] == '"') {
 130     command = command.substr(1, command.length() - 2);
 131   }
 132   // TODO(oshima): record action for metrics.
 133   if (command == "open_network_settings") {
 134     ash::Shell::GetInstance()->system_tray_delegate()->ShowNetworkSettings("");
 135   } else if (command == "open_connectivity_diagnostics") {
 136     Profile* profile = Profile::FromBrowserContext(
 137         web_contents_->GetBrowserContext());
 138     const extensions::Extension* extension =
 139         extensions::ExtensionRegistry::Get(profile)->GetExtensionById(
 140             "kodldpbjkkmmnilagfdheibampofhaom",
 141             extensions::ExtensionRegistry::EVERYTHING);
 142     apps::LaunchPlatformAppWithUrl(profile, extension, "",
 143                                    GURL::EmptyGURL(), GURL::EmptyGURL());
 144
 145   } else {
 146     LOG(WARNING) << "Unknown command:" << cmd;
 147   }
 148 }
 149
 150 void OfflineLoadPage::NotifyBlockingPageComplete(bool proceed) {
 151   BrowserThread::PostTask(
 152       BrowserThread::IO, FROM_HERE, base::Bind(callback_, proceed));
 153 }
 154
 155 void OfflineLoadPage::OnConnectionTypeChanged(
 156     net::NetworkChangeNotifier::ConnectionType type) {
 157   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 158   const bool online = type != net::NetworkChangeNotifier::CONNECTION_NONE;
 159   DVLOG(1) << "ConnectionTypeObserver notification received: state="
 160            << (online ? "online" : "offline");
 161   if (online) {
 162     net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
 163     interstitial_page_->Proceed();
 164   }
 165 }
 166
 167 }  // namespace chromeos