offline_load_page.cc revision 03b57e008b61dfcb1fbad3aea950ae0e001748b0 
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 "chrome/grit/theme_resources.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 "extensions/browser/extension_registry.h"
34#include "extensions/browser/extension_system.h"
35#include "extensions/common/extension.h"
36#include "extensions/common/extension_icon_set.h"
37#include "extensions/common/manifest_handlers/icons_handler.h"
38#include "net/base/escape.h"
39#include "net/base/net_errors.h"
40#include "ui/base/resource/resource_bundle.h"
41#include "ui/base/webui/jstemplate_builder.h"
42#include "ui/base/webui/web_ui_util.h"
43
44using content::BrowserThread;
45using content::InterstitialPage;
46using content::WebContents;
47
48namespace chromeos {
49
50OfflineLoadPage::OfflineLoadPage(WebContents* web_contents,
51                                 const GURL& url,
52                                 const CompletionCallback& callback)
53    : callback_(callback),
54      proceeded_(false),
55      web_contents_(web_contents),
56      url_(url) {
57  net::NetworkChangeNotifier::AddConnectionTypeObserver(this);
58  interstitial_page_ = InterstitialPage::Create(web_contents, true, url, this);
59}
60
61OfflineLoadPage::~OfflineLoadPage() {
62  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
63  net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
64}
65
66void OfflineLoadPage::Show() {
67  interstitial_page_->Show();
68}
69
70std::string OfflineLoadPage::GetHTMLContents() {
71  // Use a local error page.
72  int resource_id;
73  base::DictionaryValue error_strings;
74
75  // The offline page for app has icons and slightly different message.
76  Profile* profile = Profile::FromBrowserContext(
77      web_contents_->GetBrowserContext());
78  DCHECK(profile);
79  const extensions::Extension* extension = extensions::ExtensionRegistry::Get(
80      profile)->enabled_extensions().GetHostedAppByURL(url_);
81  if (extension && !extension->from_bookmark()) {
82    LocalizedError::GetAppErrorStrings(url_, extension, &error_strings);
83    resource_id = IDR_OFFLINE_APP_LOAD_HTML;
84  } else {
85    const std::string locale = g_browser_process->GetApplicationLocale();
86    const std::string accept_languages =
87        profile->GetPrefs()->GetString(prefs::kAcceptLanguages);
88    LocalizedError::GetStrings(net::ERR_INTERNET_DISCONNECTED,
89                               net::kErrorDomain, url_, false, false, locale,
90                               accept_languages,
91                               scoped_ptr<LocalizedError::ErrorPageParams>(),
92                               &error_strings);
93    resource_id = IDR_OFFLINE_NET_LOAD_HTML;
94  }
95
96  const base::StringPiece template_html(
97      ResourceBundle::GetSharedInstance().GetRawDataResource(
98          resource_id));
99  // "t" is the id of the templates root node.
100  return webui::GetTemplatesHtml(template_html, &error_strings, "t");
101}
102
103void OfflineLoadPage::OverrideRendererPrefs(
104    content::RendererPreferences* prefs) {
105  Profile* profile = Profile::FromBrowserContext(
106      web_contents_->GetBrowserContext());
107  renderer_preferences_util::UpdateFromSystemSettings(prefs, profile);
108}
109
110void OfflineLoadPage::OnProceed() {
111  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
112  proceeded_ = true;
113  NotifyBlockingPageComplete(true);
114}
115
116void OfflineLoadPage::OnDontProceed() {
117  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
118  // Ignore if it's already proceeded.
119  if (proceeded_)
120    return;
121  NotifyBlockingPageComplete(false);
122}
123
124void OfflineLoadPage::CommandReceived(const std::string& cmd) {
125  std::string command(cmd);
126  // The Jasonified response has quotes, remove them.
127  if (command.length() > 1 && command[0] == '"') {
128    command = command.substr(1, command.length() - 2);
129  }
130  // TODO(oshima): record action for metrics.
131  if (command == "open_network_settings") {
132    ash::Shell::GetInstance()->system_tray_delegate()->ShowNetworkSettings("");
133  } else if (command == "open_connectivity_diagnostics") {
134    Profile* profile = Profile::FromBrowserContext(
135        web_contents_->GetBrowserContext());
136    const extensions::Extension* extension =
137        extensions::ExtensionRegistry::Get(profile)->GetExtensionById(
138            "kodldpbjkkmmnilagfdheibampofhaom",
139            extensions::ExtensionRegistry::EVERYTHING);
140    apps::LaunchPlatformAppWithUrl(profile, extension, "",
141                                   GURL::EmptyGURL(), GURL::EmptyGURL());
142
143  } else {
144    LOG(WARNING) << "Unknown command:" << cmd;
145  }
146}
147
148void OfflineLoadPage::NotifyBlockingPageComplete(bool proceed) {
149  BrowserThread::PostTask(
150      BrowserThread::IO, FROM_HERE, base::Bind(callback_, proceed));
151}
152
153void OfflineLoadPage::OnConnectionTypeChanged(
154    net::NetworkChangeNotifier::ConnectionType type) {
155  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
156  const bool online = type != net::NetworkChangeNotifier::CONNECTION_NONE;
157  DVLOG(1) << "ConnectionTypeObserver notification received: state="
158           << (online ? "online" : "offline");
159  if (online) {
160    net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
161    interstitial_page_->Proceed();
162  }
163}
164
165}  // namespace chromeos
166