chrome/browser/ui/app_list/app_list_util.cc

   1 // Copyright 2013 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/app_list/app_list_util.h"
   6
   7 #include "base/metrics/field_trial.h"
   8 #include "base/prefs/pref_registry_simple.h"
   9 #include "base/prefs/pref_service.h"
  10 #include "chrome/browser/browser_process.h"
  11 #include "chrome/browser/ui/host_desktop.h"
  12 #include "chrome/common/pref_names.h"
  13
  14 namespace {
  15
  16 #if defined(ENABLE_APP_LIST)
  17 // The field trial group name that enables showing the promo.
  18 const char kShowLauncherPromoOnceGroupName[] = "ShowPromoUntilDismissed";
  19
  20 // The field trial group name that resets the pref to show the app launcher
  21 // promo on every session startup.
  22 const char kResetShowLauncherPromoPrefGroupName[] = "ResetShowPromoPref";
  23
  24 // The name of the field trial that controls showing the app launcher promo.
  25 const char kLauncherPromoTrialName[] = "ShowAppLauncherPromo";
  26 #endif  // defined(ENABLE_APP_LIST)
  27
  28 }  // namespace
  29
  30 void SetupShowAppLauncherPromoFieldTrial(PrefService* local_state) {
  31 #if defined(ENABLE_APP_LIST)
  32   if (base::FieldTrialList::FindFullName(kLauncherPromoTrialName) ==
  33       kResetShowLauncherPromoPrefGroupName) {
  34     local_state->SetBoolean(prefs::kShowAppLauncherPromo, true);
  35   }
  36 #endif
  37 }
  38
  39 bool IsAppLauncherEnabled() {
  40 #if !defined(ENABLE_APP_LIST)
  41   return false;
  42
  43 #elif defined(OS_CHROMEOS)
  44   return true;
  45
  46 #else  // defined(ENABLE_APP_LIST) && !defined(OS_CHROMEOS)
  47   if (chrome::GetActiveDesktop() == chrome::HOST_DESKTOP_TYPE_ASH)
  48     return true;
  49
  50   PrefService* prefs = g_browser_process->local_state();
  51   // In some tests, the prefs aren't initialised.
  52   return prefs && prefs->GetBoolean(prefs::kAppLauncherHasBeenEnabled);
  53 #endif
  54 }
  55
  56 bool ShouldShowAppLauncherPromo() {
  57 #if !defined(ENABLE_APP_LIST)
  58   return false;
  59 #else
  60   PrefService* local_state = g_browser_process->local_state();
  61   // In some tests, the prefs aren't initialised.
  62   if (!local_state)
  63     return false;
  64   std::string app_launcher_promo_group_name =
  65       base::FieldTrialList::FindFullName(kLauncherPromoTrialName);
  66   return !IsAppLauncherEnabled() &&
  67       local_state->GetBoolean(prefs::kShowAppLauncherPromo) &&
  68       (app_launcher_promo_group_name == kShowLauncherPromoOnceGroupName ||
  69        app_launcher_promo_group_name == kResetShowLauncherPromoPrefGroupName);
  70 #endif
  71 }  // namespace apps