Welcome page changes for Windows 10 and over.

chrome/browser/ui/startup/startup_browser_creator_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/startup/startup_browser_creator_impl.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "apps/app_restore_service.h"
 #include "apps/app_restore_service_factory.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/environment.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_restrictions.h"
 #include "chrome/browser/apps/install_chrome_app.h"
 #include "chrome/browser/auto_launch_trial.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/extensions/extension_creator.h"
@@ skipping 34 matching lines @@
 #include "chrome/browser/ui/startup/startup_browser_creator.h"
 #include "chrome/browser/ui/tabs/pinned_tab_codec.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_result_codes.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_metrics.h"
+#include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/locale_settings.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "components/google/core/browser/google_util.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/dom_storage_context.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
+#include "net/base/network_change_notifier.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/mac_util.h"
 #include "chrome/browser/ui/cocoa/keystone_infobar_delegate.h"
 #endif
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #include "chrome/browser/apps/app_launch_for_metro_restart_win.h"
@@ skipping 186 matching lines @@
 }  // namespace internals
 
 StartupBrowserCreatorImpl::StartupBrowserCreatorImpl(
     const base::FilePath& cur_dir,
     const base::CommandLine& command_line,
     chrome::startup::IsFirstRun is_first_run)
     : cur_dir_(cur_dir),
       command_line_(command_line),
       profile_(NULL),
       browser_creator_(NULL),
-      is_first_run_(is_first_run == chrome::startup::IS_FIRST_RUN) {
+      is_first_run_(is_first_run == chrome::startup::IS_FIRST_RUN),
+      welcome_run_type_(WelcomeRunType::NONE) {
 }
 
 StartupBrowserCreatorImpl::StartupBrowserCreatorImpl(
     const base::FilePath& cur_dir,
     const base::CommandLine& command_line,
     StartupBrowserCreator* browser_creator,
     chrome::startup::IsFirstRun is_first_run)
     : cur_dir_(cur_dir),
       command_line_(command_line),
       profile_(NULL),
       browser_creator_(browser_creator),
-      is_first_run_(is_first_run == chrome::startup::IS_FIRST_RUN) {
+      is_first_run_(is_first_run == chrome::startup::IS_FIRST_RUN),
+      welcome_run_type_(WelcomeRunType::NONE) {
 }
 
 StartupBrowserCreatorImpl::~StartupBrowserCreatorImpl() {
 }
 
 bool StartupBrowserCreatorImpl::Launch(Profile* profile,
                                        const std::vector<GURL>& urls_to_open,
                                        bool process_startup,
                                        chrome::HostDesktopType desktop_type) {
   DCHECK(profile);
@@ skipping 205 matching lines @@
     chrome::HostDesktopType desktop_type) {
   // If we're starting up in "background mode" (no open browser window) then
   // don't open any browser windows, unless kAutoLaunchAtStartup is also
   // specified.
   if (process_startup &&
       command_line_.HasSwitch(switches::kNoStartupWindow) &&
       !command_line_.HasSwitch(switches::kAutoLaunchAtStartup)) {
     return;
   }
 
+  // Determine whether or not this launch must include the welcome page.
+  InitializeWelcomeRunType(urls_to_open);
+
 // TODO(tapted): Move this to startup_browser_creator_win.cc after refactor.
 #if defined(OS_WIN)
   if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
     // See if there are apps for this profile that should be launched on startup
     // due to a switch from Metro mode.
     app_metro_launch::HandleAppLaunchForMetroRestart(profile_);
   }
 #endif
 
   if (process_startup && ProcessStartupURLs(urls_to_open, desktop_type)) {
     // ProcessStartupURLs processed the urls, nothing else to do.
     return;
   }
 
   chrome::startup::IsProcessStartup is_process_startup = process_startup ?
       chrome::startup::IS_PROCESS_STARTUP :
       chrome::startup::IS_NOT_PROCESS_STARTUP;
   if (!process_startup) {
     // Even if we're not starting a new process, this may conceptually be
     // "startup" for the user and so should be handled in a similar way.  Eg.,
     // Chrome may have been running in the background due to an app with a
     // background page being installed, or running with only an app window
     // displayed.
     SessionService* service =
         SessionServiceFactory::GetForProfileForSessionRestore(profile_);
     if (service && service->ShouldNewWindowStartSession()) {
-      // Restore the last session if any.
-      if (!HasPendingUncleanExit(profile_) &&
-          service->RestoreIfNecessary(urls_to_open)) {
-        return;
+      // Restore the last session if any, optionally including the welcome page
+      // if desired.
+      if (!HasPendingUncleanExit(profile_)) {
+        std::vector<GURL> adjusted_urls(urls_to_open);
+        if (welcome_run_type_ == WelcomeRunType::FIRST_TAB) {
+          adjusted_urls.insert(adjusted_urls.begin(),
+                               internals::GetWelcomePageURL());
+        }
+        if (service->RestoreIfNecessary(adjusted_urls))
+          return;
       }
+
       // Open user-specified URLs like pinned tabs and startup tabs.
       Browser* browser = ProcessSpecifiedURLs(urls_to_open, desktop_type);
       if (browser) {
         AddInfoBarsIfNecessary(browser, is_process_startup);
         return;
       }
     }
   }
 
   // Session startup didn't occur, open the urls.
   Browser* browser = NULL;
-  std::vector<GURL> adjust_urls = urls_to_open;
-  if (adjust_urls.empty()) {
-    AddStartupURLs(&adjust_urls);
+  std::vector<GURL> adjusted_urls = urls_to_open;
+  if (adjusted_urls.empty()) {
+    AddStartupURLs(&adjusted_urls);
   } else if (!command_line_.HasSwitch(switches::kOpenInNewWindow)) {
     // Always open a list of urls in a window on the native desktop.
     browser = chrome::FindTabbedBrowser(profile_, false,
                                         chrome::HOST_DESKTOP_TYPE_NATIVE);
   }
   // This will launch a browser; prevent session restore.
   StartupBrowserCreator::in_synchronous_profile_launch_ = true;
-  browser = OpenURLsInBrowser(browser, process_startup, adjust_urls,
-                              desktop_type);
+  browser =
+      OpenURLsInBrowser(browser, process_startup, adjusted_urls, desktop_type);
   StartupBrowserCreator::in_synchronous_profile_launch_ = false;
   AddInfoBarsIfNecessary(browser, is_process_startup);
 }
 
 bool StartupBrowserCreatorImpl::ProcessStartupURLs(
     const std::vector<GURL>& urls_to_open,
     chrome::HostDesktopType desktop_type) {
   VLOG(1) << "StartupBrowserCreatorImpl::ProcessStartupURLs";
   SessionStartupPref pref =
       StartupBrowserCreator::GetSessionStartupPref(command_line_, profile_);
@@ skipping 33 matching lines @@
 #if defined(OS_MACOSX)
     // On Mac, when restoring a session with no windows, suppress the creation
     // of a new window in the case where the system is launching Chrome via a
     // login item or Lion's resume feature.
     if (base::mac::WasLaunchedAsLoginOrResumeItem()) {
       restore_behavior = restore_behavior &
                          ~SessionRestore::ALWAYS_CREATE_TABBED_BROWSER;
     }
 #endif
 
+    // Optionally include the welcome page.
+    std::vector<GURL> adjusted_urls(urls_to_open);
+    if (welcome_run_type_ == WelcomeRunType::FIRST_TAB) {
+      adjusted_urls.insert(adjusted_urls.begin(),
+                           internals::GetWelcomePageURL());
+    }
+
     // The startup code only executes for browsers launched in desktop mode.
     // i.e. HOST_DESKTOP_TYPE_NATIVE. Ash should never get here.
     Browser* browser = SessionRestore::RestoreSession(
-        profile_, NULL, desktop_type, restore_behavior,
-        urls_to_open);
+        profile_, NULL, desktop_type, restore_behavior, adjusted_urls);
 
     AddInfoBarsIfNecessary(browser, chrome::startup::IS_PROCESS_STARTUP);
     return true;
   }
 
   Browser* browser = ProcessSpecifiedURLs(urls_to_open, desktop_type);
   if (!browser)
     return false;
 
   AddInfoBarsIfNecessary(browser, chrome::startup::IS_PROCESS_STARTUP);
@@ skipping 32 matching lines @@
     // If urls were specified on the command line, use them.
     UrlsToTabs(urls_to_open, &tabs);
   } else if (pref.type == SessionStartupPref::DEFAULT ||
              (is_first_run_ &&
               browser_creator_ && !browser_creator_->first_run_tabs_.empty())) {
     std::vector<GURL> urls;
     AddStartupURLs(&urls);
     UrlsToTabs(urls, &tabs);
   } else if (pref.type == SessionStartupPref::URLS && !pref.urls.empty() &&
              !HasPendingUncleanExit(profile_)) {
+    // Optionally include the welcome page first.
+    if (welcome_run_type_ == WelcomeRunType::FIRST_TAB)
+      UrlsToTabs(std::vector<GURL>(1, internals::GetWelcomePageURL()), &tabs);
     // Only use the set of urls specified in preferences if nothing was
     // specified on the command line. Filter out any urls that are to be
     // restored by virtue of having been previously pinned.
     AddUniqueURLs(pref.urls, &tabs);
   } else if (pref.type == SessionStartupPref::HOMEPAGE) {
     // If 'homepage' selected, either by the user or by a policy, we should
     // have migrated them to another value.
     NOTREACHED() << "SessionStartupPref has deprecated type HOMEPAGE";
   }
 
@@ skipping 161 matching lines @@
           startup_urls->push_back(internals::GetWelcomePageURL());
         } else {
           startup_urls->push_back(*it);
         }
         ++it;
       }
       browser_creator_->first_run_tabs_.clear();
     }
   }
 
-  // Otherwise open at least the new tab page (and the welcome page, if this
-  // is the first time the browser is being started), or the set of URLs
+  // Otherwise open at least the new tab page (and optionally the welcome page
+  // at the front or back as indicated by welcome_run_type_), or the set of URLs
   // specified on the command line.
   if (startup_urls->empty()) {
+    if (welcome_run_type_ == WelcomeRunType::FIRST_TAB)
+      startup_urls->push_back(internals::GetWelcomePageURL());
     startup_urls->push_back(GURL(chrome::kChromeUINewTabURL));
-    if (first_run::ShouldShowWelcomePage())
+    if (welcome_run_type_ == WelcomeRunType::FIRST_RUN_LAST_TAB)
       startup_urls->push_back(internals::GetWelcomePageURL());
   }
 
   if (signin::ShouldShowPromoAtStartup(profile_, is_first_run_)) {
     signin::DidShowPromoAtStartup(profile_);
 
     const GURL sync_promo_url = signin::GetPromoURL(
         signin_metrics::SOURCE_START_PAGE, false);
 
     // No need to add if the sync promo is already in the startup list.
@@ skipping 11 matching lines @@
       // behavior is desired because completing or skipping the sync promo
       // causes a redirect to the NTP.
       if (!startup_urls->empty() &&
           startup_urls->at(0) == GURL(chrome::kChromeUINewTabURL))
         startup_urls->at(0) = sync_promo_url;
       else
         startup_urls->insert(startup_urls->begin(), sync_promo_url);
     }
   }
 }
+
+// For first-run, the type will be FIRST_RUN_LAST for all systems except for
+// Windows 10+, where it will be FIRST_RUN_FIRST. For non-first run, the type
+// will be NONE for all systems except for Windows 10+, where it will be
+// ANY_RUN_FIRST if this is the first somewhat normal launch since an OS
+// upgrade.
+void StartupBrowserCreatorImpl::InitializeWelcomeRunType(
+    const std::vector<GURL>& urls_to_open) {
+  DCHECK_EQ(static_cast<int>(WelcomeRunType::NONE),
+            static_cast<int>(welcome_run_type_));
+#if defined(OS_WIN)
+  // Do not welcome if there are any URLs to open.
+  if (!urls_to_open.empty())
+    return;
+
+  base::win::OSInfo* const os_info = base::win::OSInfo::GetInstance();
+  const base::win::OSInfo::VersionNumber v(os_info->version_number());
+  const std::string this_version(base::StringPrintf("%d.%d", v.major, v.minor));
+  PrefService* const local_state = g_browser_process->local_state();
+
+  // Always welcome on first run.
+  if (first_run::ShouldShowWelcomePage()) {
+    // First tab for Win10+, last tab otherwise.
+    welcome_run_type_ = os_info->version() >= base::win::VERSION_WIN10
+                            ? WelcomeRunType::FIRST_TAB
+                            : WelcomeRunType::FIRST_RUN_LAST_TAB;
+  } else {
+    // Otherwise, do not welcome pre-Win10.
+    if (base::win::GetVersion() < base::win::VERSION_WIN10)
+      return;
+
+    // Do not welcome if launching into incognito.
+    if (IncognitoModePrefs::ShouldLaunchIncognito(command_line_,
+                                                  profile_->GetPrefs())) {
+      return;
+    }
+
+    // Do not welcome if there is no local state (tests).
+    if (!local_state)
+      return;
+
+    // Do not welcome if disabled by policy or master_preferences.
+    if (!local_state->GetBoolean(prefs::kWelcomePageOnOSUpgradeEnabled))
+      return;
+
+    // Do not welcome if already shown for this OS version.
+    if (local_state->GetString(prefs::kLastWelcomedOSVersion) == this_version)
+      return;
+
+    // Do not welcome if offline.
+    if (net::NetworkChangeNotifier::IsOffline())
+      return;
+
+    // Do not welcome if Chrome was the default browser at startup.
+    if (g_browser_process->CachedDefaultWebClientState() ==
+        ShellIntegration::IS_DEFAULT) {
+      return;
+    }
+
+    // Show the welcome page in the first tab.
+    welcome_run_type_ = WelcomeRunType::FIRST_TAB;
+  }
+
+  // Remember that the welcome page was shown for this OS version.
+  local_state->SetString(prefs::kLastWelcomedOSVersion, this_version);
+#else  // OS_WIN
+  // Show the welcome page as the last tab only on first-run.
+  if (first_run::ShouldShowWelcomePage())
+    welcome_run_type_ = WelcomeRunType::FIRST_RUN_LAST_TAB;
+#endif  // !OS_WIN
+}