Show Goodies page to new Chromebook users

chrome/browser/chromeos/first_run/goodies_displayer.cc

+// Copyright 2015 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/chromeos/first_run/goodies_displayer.h"
+
+#include "base/files/file_util.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/login/session/user_session_manager.h"
+#include "chrome/browser/chromeos/login/startup_utils.h"
+#include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
+#include "chrome/browser/prefs/pref_service_syncable.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_tabstrip.h"
+#include "chrome/common/pref_names.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace chromeos {
+namespace first_run {
+
+namespace {
+
+// ChromeOS Goodies page for device's first New Window.
+const char kGoodiesURL[] = "https://www.google.com/chrome/devices/goodies.html";
+
+// Max days after initial login that we're willing to show Goodies.
+static const int kMaxDaysAfterOobeForGoodies = 14;
+
+// Checks timestamp on OOBE Complete flag file.  kCanShowOobeGoodiesPage
+// defaults to |true|; we set it to |false| (return |false|) for any device over
+// kMaxDaysAfterOobeForGoodies days old, to avoid showing it after update on
+// older devices.
+bool CheckGoodiesPrefAgainstOobeTimestamp() {
+  const base::FilePath oobe_timestamp_file =
+      StartupUtils::GetOobeCompleteFlagPath();
+  base::File::Info fileInfo;

[achuithb, 2015/09/16 21:51:36]

Add a DCHECK for BlockingPool:
DCHECK(content::BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());

[Greg Levin, 2015/09/16 22:50:45]

Done.

+  if (base::GetFileInfo(oobe_timestamp_file, &fileInfo)) {
+    const base::TimeDelta time_since_oobe =
+        base::Time::Now() - fileInfo.creation_time;
+    if (time_since_oobe >
+        base::TimeDelta::FromDays(kMaxDaysAfterOobeForGoodies))
+      return false;
+  }
+  return true;
+}
+
+// Callback into main thread to set pref to |false| if too long since oobe, or
+// to create GoodiesDisplayer otherwise.
+void UpdateGoodiesPrefCantShow(bool can_show_goodies) {
+  if (can_show_goodies) {

[achuithb, 2015/09/16 21:51:36]

DCHECK_CURRENTLY_ON(content::BrowserThread::UI);

[Greg Levin, 2015/09/16 22:50:45]

Done.

+    UserSessionManager::GetInstance()->CreateGoodiesDisplayer();
+  } else {
+    g_browser_process->local_state()->SetBoolean(prefs::kCanShowOobeGoodiesPage,
+                                                 false);
+  }
+}
+
+}  // namespace
+
+GoodiesDisplayer::GoodiesDisplayer() {
+  BrowserList::AddObserver(this);
+}
+
+// If Goodies page hasn't been shown yet, and Chromebook isn't too old, create
+// GoodiesDisplayer to observe BrowserList.
+void GoodiesDisplayer::Init() {
+  if (g_browser_process->local_state()->GetBoolean(
+          prefs::kCanShowOobeGoodiesPage))
+    base::PostTaskAndReplyWithResult(
+        content::BrowserThread::GetBlockingPool(), FROM_HERE,
+        base::Bind(&CheckGoodiesPrefAgainstOobeTimestamp),
+        base::Bind(&UpdateGoodiesPrefCantShow));
+}
+
+// If conditions enumerated below are met, this loads the Oobe Goodies page for
+// new Chromebooks; when appropriate, it uses pref to mark page as shown,
+// removes itself from BrowserListObservers, and deletes itself.
+void GoodiesDisplayer::OnBrowserSetLastActive(Browser* browser) {
+  // 1. Not guest or incognito session (keep observing).
+  if (browser->profile()->IsOffTheRecord())
+    return;
+
+  PrefService* local_state = g_browser_process->local_state();
+  // 2. Not previously shown, or otherwise marked as unavailable.
+  if (local_state->GetBoolean(prefs::kCanShowOobeGoodiesPage)) {
+    // 3. Device not enterprise enrolled.
+    if (!g_browser_process->platform_part()
+             ->browser_policy_connector_chromeos()
+             ->IsEnterpriseManaged())
+      chrome::AddTabAt(browser, GURL(kGoodiesURL), 2, false);
+
+    // Set to |false| whether enterprise enrolled or Goodies shown.
+    local_state->SetBoolean(prefs::kCanShowOobeGoodiesPage, false);
+  }
+
+  // Regardless of how we got here, we don't henceforth need to show Goodies.
+  BrowserList::RemoveObserver(this);
+  UserSessionManager::GetInstance()->DestroyGoodiesDisplayer();
+}
+
+}  // namespace first_run
+}  // namespace chromeos