src/chrome/browser/chromeos/ui/idle_logout_dialog_view.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/chromeos/ui/idle_logout_dialog_view.h"
   6
   7 #include "ash/shell.h"
   8 #include "base/bind.h"
   9 #include "base/bind_helpers.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "base/time/time.h"
  13 #include "chrome/browser/chromeos/kiosk_mode/kiosk_mode_settings.h"
  14 #include "chrome/browser/ui/browser_list.h"
  15 #include "chrome/grit/generated_resources.h"
  16 #include "chromeos/dbus/dbus_thread_manager.h"
  17 #include "chromeos/dbus/session_manager_client.h"
  18 #include "ui/aura/window_event_dispatcher.h"
  19 #include "ui/base/l10n/l10n_util.h"
  20 #include "ui/views/controls/label.h"
  21 #include "ui/views/layout/grid_layout.h"
  22 #include "ui/views/layout/layout_constants.h"
  23 #include "ui/views/widget/widget.h"
  24
  25 namespace {
  26
  27 // Global singleton instance of our dialog class.
  28 chromeos::IdleLogoutDialogView* g_instance = NULL;
  29
  30 const int kIdleLogoutDialogMaxWidth = 300;
  31 const int kCountdownUpdateIntervalMs = 1000;
  32
  33 }  // namespace
  34
  35 namespace chromeos {
  36
  37 IdleLogoutSettingsProvider* IdleLogoutDialogView::provider_ = NULL;
  38
  39 ////////////////////////////////////////////////////////////////////////////////
  40 // IdleLogoutSettingsProvider public methods
  41 IdleLogoutSettingsProvider::IdleLogoutSettingsProvider() {
  42 }
  43
  44 IdleLogoutSettingsProvider::~IdleLogoutSettingsProvider() {
  45 }
  46
  47 base::TimeDelta IdleLogoutSettingsProvider::GetCountdownUpdateInterval() {
  48   return base::TimeDelta::FromMilliseconds(kCountdownUpdateIntervalMs);
  49 }
  50
  51 KioskModeSettings* IdleLogoutSettingsProvider::GetKioskModeSettings() {
  52   return KioskModeSettings::Get();
  53 }
  54
  55 void IdleLogoutSettingsProvider::LogoutCurrentUser(IdleLogoutDialogView*) {
  56   DBusThreadManager::Get()->GetSessionManagerClient()->StopSession();
  57 }
  58
  59 ////////////////////////////////////////////////////////////////////////////////
  60 // IdleLogoutDialogView public static methods
  61 // static
  62 void IdleLogoutDialogView::ShowDialog() {
  63   // We only show the dialog if it is not already showing. We don't want two
  64   // countdowns on the screen for any reason. If the dialog is closed by using
  65   // CloseDialog, we reset g_instance so the next Show will work correctly; in
  66   // case the dialog is closed by the system, DeleteDelegate is guaranteed to be
  67   // called, in which case we reset g_instance there if not already reset.
  68   if (!g_instance) {
  69     g_instance = new IdleLogoutDialogView();
  70     g_instance->InitAndShow();
  71   }
  72 }
  73
  74 // static
  75 void IdleLogoutDialogView::CloseDialog() {
  76   if (g_instance)
  77     g_instance->GetWidget()->Close();
  78 }
  79
  80 ////////////////////////////////////////////////////////////////////////////////
  81 // Overridden from views::DialogDelegateView
  82 int IdleLogoutDialogView::GetDialogButtons() const {
  83   return ui::DIALOG_BUTTON_NONE;
  84 }
  85
  86 ui::ModalType IdleLogoutDialogView::GetModalType() const {
  87   return ui::MODAL_TYPE_WINDOW;
  88 }
  89
  90 base::string16 IdleLogoutDialogView::GetWindowTitle() const {
  91   return l10n_util::GetStringUTF16(IDS_IDLE_LOGOUT_TITLE);
  92 }
  93
  94 bool IdleLogoutDialogView::Close() {
  95   if (timer_.IsRunning())
  96     timer_.Stop();
  97
  98   // We just closed our dialog. The global
  99   // instance is invalid now, set it to null.
 100   g_instance = NULL;
 101
 102   return true;
 103 }
 104
 105 ////////////////////////////////////////////////////////////////////////////////
 106 // IdleLogoutDialog private methods
 107 IdleLogoutDialogView::IdleLogoutDialogView()
 108     : restart_label_(NULL),
 109       weak_ptr_factory_(this) {
 110   if (!IdleLogoutDialogView::provider_)
 111     IdleLogoutDialogView::provider_ = new IdleLogoutSettingsProvider();
 112 }
 113
 114 IdleLogoutDialogView::~IdleLogoutDialogView() {
 115   if (this == g_instance)
 116     g_instance = NULL;
 117 }
 118
 119 void IdleLogoutDialogView::InitAndShow() {
 120   KioskModeSettings* settings =
 121       IdleLogoutDialogView::provider_->GetKioskModeSettings();
 122   if (!settings->is_initialized()) {
 123     settings->Initialize(base::Bind(&IdleLogoutDialogView::InitAndShow,
 124                                     weak_ptr_factory_.GetWeakPtr()));
 125     return;
 126   }
 127
 128   restart_label_ = new views::Label();
 129   restart_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 130   restart_label_->SetMultiLine(true);
 131
 132   views::GridLayout* layout = views::GridLayout::CreatePanel(this);
 133   SetLayoutManager(layout);
 134
 135   views::ColumnSet* column_set = layout->AddColumnSet(0);
 136   column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::CENTER, 1,
 137                         views::GridLayout::FIXED, kIdleLogoutDialogMaxWidth, 0);
 138   layout->StartRow(0, 0);
 139   layout->AddPaddingRow(0, views::kRelatedControlHorizontalSpacing);
 140   layout->StartRow(0, 0);
 141   layout->AddView(restart_label_);
 142   layout->AddPaddingRow(0, views::kRelatedControlHorizontalSpacing);
 143
 144   // We're initialized, show the dialog.
 145   Show();
 146 }
 147
 148 void IdleLogoutDialogView::Show() {
 149   KioskModeSettings* settings =
 150         IdleLogoutDialogView::provider_->GetKioskModeSettings();
 151
 152   // Setup the countdown label before showing.
 153   countdown_end_time_ = base::Time::Now() +
 154       settings->GetIdleLogoutWarningDuration();
 155
 156   UpdateCountdown();
 157
 158   views::DialogDelegate::CreateDialogWidget(
 159       this, ash::Shell::GetPrimaryRootWindow(), NULL);
 160   GetWidget()->SetAlwaysOnTop(true);
 161   GetWidget()->Show();
 162
 163   // Update countdown every 1 second.
 164   timer_.Start(FROM_HERE,
 165                IdleLogoutDialogView::provider_->GetCountdownUpdateInterval(),
 166                this,
 167                &IdleLogoutDialogView::UpdateCountdown);
 168 }
 169
 170 void IdleLogoutDialogView::UpdateCountdown() {
 171   base::TimeDelta logout_warning_time = countdown_end_time_ -
 172                                         base::Time::Now();
 173   int64 seconds_left = (logout_warning_time.InMillisecondsF() /
 174                         base::Time::kMillisecondsPerSecond) + 0.5;
 175
 176   if (seconds_left > 1) {
 177     restart_label_->SetText(l10n_util::GetStringFUTF16(
 178         IDS_IDLE_LOGOUT_WARNING_RESTART,
 179         base::Int64ToString16(seconds_left)));
 180   } else if (seconds_left > 0) {
 181     restart_label_->SetText(l10n_util::GetStringUTF16(
 182         IDS_IDLE_LOGOUT_WARNING_RESTART_1S));
 183   } else {
 184     // Set the label - the logout probably won't be instant.
 185     restart_label_->SetText(l10n_util::GetStringUTF16(
 186         IDS_IDLE_LOGOUT_WARNING_RESTART_NOW));
 187
 188     // We're done; stop the timer and logout.
 189     timer_.Stop();
 190     IdleLogoutDialogView::provider_->LogoutCurrentUser(this);
 191   }
 192 }
 193
 194 // static
 195 IdleLogoutDialogView* IdleLogoutDialogView::current_instance() {
 196   return g_instance;
 197 }
 198
 199 // static
 200 void IdleLogoutDialogView::set_settings_provider(
 201     IdleLogoutSettingsProvider* provider) {
 202   provider_ = provider;
 203 }
 204
 205 }  // namespace chromeos