chrome/browser/ui/startup/default_browser_prompt_win.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 "base/prefs/pref_service.h"
   8 #include "base/win/windows_version.h"
   9 #include "chrome/browser/profiles/profile.h"
  10 #include "chrome/browser/shell_integration.h"
  11 #include "chrome/browser/ui/browser.h"
  12 #include "chrome/browser/ui/browser_finder.h"
  13 #include "chrome/browser/ui/webui/set_as_default_browser_ui.h"
  14 #include "components/startup_metric_utils/startup_metric_utils.h"
  15 #include "content/public/browser/browser_thread.h"
  16 #include "content/public/browser/notification_service.h"
  17 #include "content/public/browser/notification_types.h"
  18
  19 using content::BrowserThread;
  20
  21 namespace {
  22
  23 // Show the page prompting the user to make Chrome the default browser on
  24 // Windows 8 (which means becoming "the browser" in Metro mode). The page
  25 // will be shown at the first appropriate opportunity. It can be placed in
  26 // a tab or in a dialog, depending on other settings.
  27 class SetMetroBrowserFlowLauncher : public content::NotificationObserver {
  28  public:
  29   static void LaunchSoon(Profile* profile) {
  30     // The instance will manage its own lifetime.
  31     new SetMetroBrowserFlowLauncher(profile);
  32   }
  33
  34  private:
  35   explicit SetMetroBrowserFlowLauncher(Profile* profile)
  36       : profile_(profile) {
  37     registrar_.Add(this, content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
  38                    content::NotificationService::AllSources());
  39   }
  40
  41   // content::NotificationObserver override:
  42   void Observe(int type,
  43                const content::NotificationSource& source,
  44                const content::NotificationDetails& details) override;
  45
  46   content::NotificationRegistrar registrar_;
  47   Profile* profile_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(SetMetroBrowserFlowLauncher);
  50 };
  51
  52 void SetMetroBrowserFlowLauncher::Observe(
  53     int type,
  54     const content::NotificationSource& source,
  55     const content::NotificationDetails& details) {
  56   DCHECK_EQ(type, content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME);
  57   Browser* browser = chrome::FindBrowserWithWebContents(
  58       content::Source<content::WebContents>(source).ptr());
  59
  60   if (!browser || !browser->is_type_tabbed())
  61     return;
  62
  63   // Unregister and delete.
  64   registrar_.RemoveAll();
  65   SetAsDefaultBrowserUI::Show(profile_, browser);
  66   delete this;
  67 }
  68
  69 }  // namespace
  70
  71 namespace chrome {
  72
  73 bool ShowFirstRunDefaultBrowserPrompt(Profile* profile) {
  74   // The behavior on Windows 10 is no good at the moment, since there is no
  75   // known way to lead the user directly to a default browser picker.
  76   if (base::win::GetVersion() >= base::win::VERSION_WIN10)
  77     return false;
  78
  79   // If the only available mode of setting the default browser requires
  80   // user interaction, it means this couldn't have been done yet. Therefore,
  81   // we launch the dialog and inform the caller of it.
  82   bool show_status =
  83       (ShellIntegration::CanSetAsDefaultBrowser() ==
  84        ShellIntegration::SET_DEFAULT_INTERACTIVE) &&
  85       (ShellIntegration::GetDefaultBrowser() == ShellIntegration::NOT_DEFAULT);
  86
  87   if (show_status) {
  88     startup_metric_utils::SetNonBrowserUIDisplayed();
  89     SetMetroBrowserFlowLauncher::LaunchSoon(profile);
  90   }
  91
  92   return show_status;
  93 }
  94
  95 }  // namespace chrome