chrome/browser/ui/startup/default_browser_prompt.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/ui/startup/default_browser_prompt.h"
   6
   7 #include <string>
   8
   9 #include "base/location.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "base/metrics/histogram.h"
  12 #include "base/prefs/pref_registry_simple.h"
  13 #include "base/prefs/pref_service.h"
  14 #include "base/single_thread_task_runner.h"
  15 #include "base/thread_task_runner_handle.h"
  16 #include "base/version.h"
  17 #include "chrome/browser/browser_process.h"
  18 #include "chrome/browser/first_run/first_run.h"
  19 #include "chrome/browser/infobars/infobar_service.h"
  20 #include "chrome/browser/profiles/profile.h"
  21 #include "chrome/browser/profiles/profile_manager.h"
  22 #include "chrome/browser/shell_integration.h"
  23 #include "chrome/browser/ui/browser.h"
  24 #include "chrome/browser/ui/browser_finder.h"
  25 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  26 #include "chrome/common/pref_names.h"
  27 #include "chrome/grit/chromium_strings.h"
  28 #include "chrome/grit/generated_resources.h"
  29 #include "chrome/installer/util/master_preferences.h"
  30 #include "chrome/installer/util/master_preferences_constants.h"
  31 #include "components/infobars/core/confirm_infobar_delegate.h"
  32 #include "components/infobars/core/infobar.h"
  33 #include "components/version_info/version_info.h"
  34 #include "content/public/browser/browser_thread.h"
  35 #include "content/public/browser/navigation_details.h"
  36 #include "content/public/browser/web_contents.h"
  37 #include "grit/theme_resources.h"
  38 #include "ui/base/l10n/l10n_util.h"
  39
  40
  41 namespace {
  42
  43 // Calls the appropriate function for setting Chrome as the default browser.
  44 // This requires IO access (registry) and may result in interaction with a
  45 // modal system UI.
  46 void SetChromeAsDefaultBrowser(bool interactive_flow, PrefService* prefs) {
  47   if (interactive_flow) {
  48     UMA_HISTOGRAM_BOOLEAN("DefaultBrowserWarning.SetAsDefaultUI", true);
  49     if (!ShellIntegration::SetAsDefaultBrowserInteractive()) {
  50       UMA_HISTOGRAM_BOOLEAN("DefaultBrowserWarning.SetAsDefaultUIFailed", true);
  51     } else if (ShellIntegration::GetDefaultBrowser() ==
  52                ShellIntegration::NOT_DEFAULT) {
  53       // If the interaction succeeded but we are still not the default browser
  54       // it likely means the user simply selected another browser from the
  55       // panel. We will respect this choice and write it down as 'no, thanks'.
  56       UMA_HISTOGRAM_BOOLEAN("DefaultBrowserWarning.DontSetAsDefault", true);
  57     }
  58   } else {
  59     UMA_HISTOGRAM_BOOLEAN("DefaultBrowserWarning.SetAsDefault", true);
  60     ShellIntegration::SetAsDefaultBrowser();
  61   }
  62 }
  63
  64 // The delegate for the infobar shown when Chrome is not the default browser.
  65 class DefaultBrowserInfoBarDelegate : public ConfirmInfoBarDelegate {
  66  public:
  67   // Creates a default browser infobar and delegate and adds the infobar to
  68   // |infobar_service|.
  69   static void Create(InfoBarService* infobar_service,
  70                      PrefService* prefs,
  71                      bool interactive_flow_required);
  72
  73  private:
  74   DefaultBrowserInfoBarDelegate(PrefService* prefs,
  75                                 bool interactive_flow_required);
  76   ~DefaultBrowserInfoBarDelegate() override;
  77
  78   void AllowExpiry() { should_expire_ = true; }
  79
  80   // ConfirmInfoBarDelegate:
  81   int GetIconId() const override;
  82   bool ShouldExpire(const NavigationDetails& details) const override;
  83   base::string16 GetMessageText() const override;
  84   base::string16 GetButtonLabel(InfoBarButton button) const override;
  85   bool OKButtonTriggersUACPrompt() const override;
  86   bool Accept() override;
  87   bool Cancel() override;
  88
  89   // The prefs to use.
  90   PrefService* prefs_;
  91
  92   // Whether the user clicked one of the buttons.
  93   bool action_taken_;
  94
  95   // Whether the info-bar should be dismissed on the next navigation.
  96   bool should_expire_;
  97
  98   // Whether changing the default application will require entering the
  99   // modal-UI flow.
 100   const bool interactive_flow_required_;
 101
 102   // Used to delay the expiration of the info-bar.
 103   base::WeakPtrFactory<DefaultBrowserInfoBarDelegate> weak_factory_;
 104
 105   DISALLOW_COPY_AND_ASSIGN(DefaultBrowserInfoBarDelegate);
 106 };
 107
 108 // static
 109 void DefaultBrowserInfoBarDelegate::Create(InfoBarService* infobar_service,
 110                                            PrefService* prefs,
 111                                            bool interactive_flow_required) {
 112   infobar_service->AddInfoBar(infobar_service->CreateConfirmInfoBar(
 113       scoped_ptr<ConfirmInfoBarDelegate>(new DefaultBrowserInfoBarDelegate(
 114           prefs, interactive_flow_required))));
 115 }
 116
 117 DefaultBrowserInfoBarDelegate::DefaultBrowserInfoBarDelegate(
 118     PrefService* prefs,
 119     bool interactive_flow_required)
 120     : ConfirmInfoBarDelegate(),
 121       prefs_(prefs),
 122       action_taken_(false),
 123       should_expire_(false),
 124       interactive_flow_required_(interactive_flow_required),
 125       weak_factory_(this) {
 126   // We want the info-bar to stick-around for few seconds and then be hidden
 127   // on the next navigation after that.
 128   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
 129       FROM_HERE, base::Bind(&DefaultBrowserInfoBarDelegate::AllowExpiry,
 130                             weak_factory_.GetWeakPtr()),
 131       base::TimeDelta::FromSeconds(8));
 132 }
 133
 134 DefaultBrowserInfoBarDelegate::~DefaultBrowserInfoBarDelegate() {
 135   if (!action_taken_)
 136     UMA_HISTOGRAM_BOOLEAN("DefaultBrowserWarning.Ignored", true);
 137 }
 138
 139 int DefaultBrowserInfoBarDelegate::GetIconId() const {
 140   return IDR_PRODUCT_LOGO_32;
 141 }
 142
 143 bool DefaultBrowserInfoBarDelegate::ShouldExpire(
 144     const NavigationDetails& details) const {
 145   return should_expire_ && ConfirmInfoBarDelegate::ShouldExpire(details);
 146 }
 147
 148 base::string16 DefaultBrowserInfoBarDelegate::GetMessageText() const {
 149   return l10n_util::GetStringUTF16(IDS_DEFAULT_BROWSER_INFOBAR_SHORT_TEXT);
 150 }
 151
 152 base::string16 DefaultBrowserInfoBarDelegate::GetButtonLabel(
 153     InfoBarButton button) const {
 154   return l10n_util::GetStringUTF16((button == BUTTON_OK) ?
 155       IDS_SET_AS_DEFAULT_INFOBAR_BUTTON_LABEL :
 156       IDS_DONT_ASK_AGAIN_INFOBAR_BUTTON_LABEL);
 157 }
 158
 159 // Setting an app as the default browser doesn't require elevation directly, but
 160 // it does require registering it as the protocol handler for "http", so if
 161 // protocol registration in general requires elevation, this does as well.
 162 bool DefaultBrowserInfoBarDelegate::OKButtonTriggersUACPrompt() const {
 163   return ShellIntegration::IsElevationNeededForSettingDefaultProtocolClient();
 164 }
 165
 166 bool DefaultBrowserInfoBarDelegate::Accept() {
 167   action_taken_ = true;
 168   content::BrowserThread::PostTask(
 169       content::BrowserThread::FILE, FROM_HERE,
 170       base::Bind(&SetChromeAsDefaultBrowser, interactive_flow_required_,
 171                  prefs_));
 172
 173   return true;
 174 }
 175
 176 bool DefaultBrowserInfoBarDelegate::Cancel() {
 177   action_taken_ = true;
 178   UMA_HISTOGRAM_BOOLEAN("DefaultBrowserWarning.DontSetAsDefault", true);
 179   // User clicked "Don't ask me again", remember that.
 180   prefs_->SetBoolean(prefs::kCheckDefaultBrowser, false);
 181   return true;
 182 }
 183
 184 void NotifyNotDefaultBrowserCallback(chrome::HostDesktopType desktop_type) {
 185   Browser* browser = chrome::FindLastActiveWithHostDesktopType(desktop_type);
 186   if (!browser)
 187     return;  // Reached during ui tests.
 188
 189   // In ChromeBot tests, there might be a race. This line appears to get
 190   // called during shutdown and |tab| can be NULL.
 191   content::WebContents* web_contents =
 192       browser->tab_strip_model()->GetActiveWebContents();
 193   if (!web_contents)
 194     return;
 195
 196   DefaultBrowserInfoBarDelegate::Create(
 197       InfoBarService::FromWebContents(web_contents),
 198       Profile::FromBrowserContext(
 199           web_contents->GetBrowserContext())->GetPrefs(),
 200       (ShellIntegration::CanSetAsDefaultBrowser() ==
 201           ShellIntegration::SET_DEFAULT_INTERACTIVE));
 202 }
 203
 204 void ResetCheckDefaultBrowserPrefOnUIThread(
 205     const base::FilePath& profile_path) {
 206   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 207   Profile* profile =
 208       g_browser_process->profile_manager()->GetProfileByPath(profile_path);
 209   if (profile)
 210     profile->GetPrefs()->SetBoolean(prefs::kCheckDefaultBrowser, true);
 211 }
 212
 213 void CheckDefaultBrowserOnFileThread(const base::FilePath& profile_path,
 214                                      bool show_prompt,
 215                                      chrome::HostDesktopType desktop_type) {
 216   DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
 217   ShellIntegration::DefaultWebClientState state =
 218       ShellIntegration::GetDefaultBrowser();
 219   if (state == ShellIntegration::IS_DEFAULT) {
 220     // Notify the user in the future if Chrome ceases to be the user's chosen
 221     // default browser.
 222     content::BrowserThread::PostTask(
 223         content::BrowserThread::UI, FROM_HERE,
 224         base::Bind(&ResetCheckDefaultBrowserPrefOnUIThread, profile_path));
 225   } else if (show_prompt && state == ShellIntegration::NOT_DEFAULT) {
 226     ShellIntegration::DefaultWebClientSetPermission default_change_mode =
 227         ShellIntegration::CanSetAsDefaultBrowser();
 228
 229     if (default_change_mode != ShellIntegration::SET_DEFAULT_NOT_ALLOWED) {
 230       content::BrowserThread::PostTask(
 231           content::BrowserThread::UI, FROM_HERE,
 232           base::Bind(&NotifyNotDefaultBrowserCallback, desktop_type));
 233     }
 234   }
 235 }
 236
 237 }  // namespace
 238
 239 namespace chrome {
 240
 241 void RegisterDefaultBrowserPromptPrefs(PrefRegistrySimple* registry) {
 242   registry->RegisterStringPref(
 243       prefs::kBrowserSuppressDefaultBrowserPrompt, std::string());
 244 }
 245
 246 void ShowDefaultBrowserPrompt(Profile* profile, HostDesktopType desktop_type) {
 247   // Do not check if Chrome is the default browser if there is a policy in
 248   // control of this setting.
 249   if (g_browser_process->local_state()->IsManagedPreference(
 250       prefs::kDefaultBrowserSettingEnabled)) {
 251     // Handling of the browser.default_browser_setting_enabled policy setting is
 252     // taken care of in BrowserProcessImpl.
 253     return;
 254   }
 255
 256   // Check if Chrome is the default browser but do not prompt if:
 257   // - The user said "don't ask me again" on the infobar earlier.
 258   // - The "suppress_default_browser_prompt_for_version" master preference is
 259   //     set to the current version.
 260   bool show_prompt =
 261       profile->GetPrefs()->GetBoolean(prefs::kCheckDefaultBrowser);
 262   if (show_prompt) {
 263     const std::string disable_version_string =
 264         g_browser_process->local_state()->GetString(
 265             prefs::kBrowserSuppressDefaultBrowserPrompt);
 266     const Version disable_version(disable_version_string);
 267     DCHECK(disable_version_string.empty() || disable_version.IsValid());
 268     if (disable_version.IsValid()) {
 269       if (disable_version.Equals(Version(version_info::GetVersionNumber())))
 270         show_prompt = false;
 271     }
 272   }
 273
 274   content::BrowserThread::PostTask(
 275       content::BrowserThread::FILE, FROM_HERE,
 276       base::Bind(&CheckDefaultBrowserOnFileThread, profile->GetPath(),
 277                  show_prompt, desktop_type));
 278 }
 279
 280 #if !defined(OS_WIN)
 281 bool ShowFirstRunDefaultBrowserPrompt(Profile* profile) {
 282   return false;
 283 }
 284 #endif
 285
 286 }  // namespace chrome