athena/system/shutdown_dialog.cc

   1 // Copyright 2014 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 "athena/system/shutdown_dialog.h"
   6
   7 #include "athena/screen/public/screen_manager.h"
   8 #include "athena/strings/grit/athena_strings.h"
   9 #include "chromeos/dbus/dbus_thread_manager.h"
  10 #include "chromeos/dbus/power_manager_client.h"
  11 #include "ui/base/l10n/l10n_util.h"
  12 #include "ui/gfx/font_list.h"
  13 #include "ui/views/background.h"
  14 #include "ui/views/border.h"
  15 #include "ui/views/controls/label.h"
  16 #include "ui/views/layout/box_layout.h"
  17 #include "ui/views/widget/widget.h"
  18 #include "ui/views/window/dialog_delegate.h"
  19
  20 namespace athena {
  21 namespace {
  22
  23 // The amount of time that the power button must be held to shut down the
  24 // device after shutdown dialog is shown.
  25 const int kShutdownTimeoutMs = 4000;
  26
  27 class ModalWidgetDelegate : public views::WidgetDelegate {
  28  public:
  29   explicit ModalWidgetDelegate(views::View* contents_view)
  30       : contents_view_(contents_view) {}
  31   ~ModalWidgetDelegate() override {}
  32
  33   // Overridden from WidgetDelegate:
  34   void DeleteDelegate() override { delete this; }
  35   views::Widget* GetWidget() override { return contents_view_->GetWidget(); }
  36   const views::Widget* GetWidget() const override {
  37     return contents_view_->GetWidget();
  38   }
  39   views::View* GetContentsView() override { return contents_view_; }
  40   ui::ModalType GetModalType() const override { return ui::MODAL_TYPE_SYSTEM; }
  41
  42  private:
  43   views::View* contents_view_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(ModalWidgetDelegate);
  46 };
  47
  48 }  // namespace
  49
  50 ShutdownDialog::ShutdownDialog() : state_(STATE_OTHER) {
  51   InputManager::Get()->AddPowerButtonObserver(this);
  52 }
  53
  54 ShutdownDialog::~ShutdownDialog() {
  55   InputManager::Get()->RemovePowerButtonObserver(this);
  56 }
  57
  58 void ShutdownDialog::ShowShutdownWarningDialog() {
  59   state_ = STATE_SHUTDOWN_WARNING_VISIBLE;
  60
  61   views::Label* label =
  62       new views::Label(l10n_util::GetStringUTF16(IDS_ATHENA_SHUTDOWN_WARNING));
  63   label->SetBackgroundColor(SK_ColorWHITE);
  64   label->SetFontList(gfx::FontList().DeriveWithStyle(gfx::Font::BOLD));
  65
  66   views::View* container = new views::View;
  67   container->AddChildView(label);
  68
  69   const int kBorderSpacing = 50;
  70   container->SetLayoutManager(new views::BoxLayout(
  71       views::BoxLayout::kHorizontal, kBorderSpacing, kBorderSpacing, 0));
  72   container->set_background(
  73       views::Background::CreateSolidBackground(SK_ColorWHITE));
  74   container->SetBorder(views::Border::CreateSolidBorder(1, SK_ColorBLACK));
  75
  76   views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
  77   params.delegate = new ModalWidgetDelegate(container);
  78   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
  79   params.context = ScreenManager::Get()->GetContext();
  80   // Use top most modal container.
  81   params.keep_on_top = true;
  82
  83   shutdown_warning_message_.reset(new views::Widget);
  84   shutdown_warning_message_->Init(params);
  85   shutdown_warning_message_->Show();
  86   shutdown_warning_message_->CenterWindow(container->GetPreferredSize());
  87
  88   timer_.Start(FROM_HERE,
  89                base::TimeDelta::FromMilliseconds(kShutdownTimeoutMs),
  90                this,
  91                &ShutdownDialog::Shutdown);
  92 }
  93
  94 void ShutdownDialog::Shutdown() {
  95   state_ = STATE_SHUTDOWN_REQUESTED;
  96   chromeos::DBusThreadManager::Get()
  97       ->GetPowerManagerClient()
  98       ->RequestShutdown();
  99 }
 100
 101 void ShutdownDialog::OnPowerButtonStateChanged(
 102     PowerButtonObserver::State state) {
 103   if (state_ == STATE_SHUTDOWN_REQUESTED)
 104     return;
 105
 106   switch (state) {
 107     case PRESSED:
 108       state_ = STATE_SUSPEND_ON_RELEASE;
 109       break;
 110     case LONG_PRESSED:
 111       ShowShutdownWarningDialog();
 112       break;
 113     case RELEASED:
 114       if (state_ == STATE_SUSPEND_ON_RELEASE) {
 115         chromeos::DBusThreadManager::Get()
 116             ->GetPowerManagerClient()
 117             ->RequestSuspend();
 118       }
 119       state_ = STATE_OTHER;
 120       timer_.Stop();
 121       shutdown_warning_message_.reset();
 122       break;
 123   }
 124 }
 125
 126 }  // namespace athena