ash/system/logout_button/tray_logout_button.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 "ash/system/logout_button/tray_logout_button.h"
   6
   7 #include <cstddef>
   8
   9 #include "ash/shell.h"
  10 #include "ash/system/tray/system_tray_delegate.h"
  11 #include "ash/system/tray/system_tray_notifier.h"
  12 #include "ash/system/tray/tray_constants.h"
  13 #include "ash/system/user/login_status.h"
  14 #include "base/logging.h"
  15 #include "base/strings/string16.h"
  16 #include "grit/ash_resources.h"
  17 #include "third_party/skia/include/core/SkColor.h"
  18 #include "ui/views/border.h"
  19 #include "ui/views/controls/button/button.h"
  20 #include "ui/views/controls/button/custom_button.h"
  21 #include "ui/views/controls/button/label_button.h"
  22 #include "ui/views/controls/button/label_button_border.h"
  23 #include "ui/views/layout/box_layout.h"
  24 #include "ui/views/view.h"
  25
  26 namespace {
  27
  28 const int kLogoutButtonNormalImages[] = {
  29   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_NORMAL_TOP_LEFT,
  30   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_NORMAL_TOP,
  31   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_NORMAL_TOP_RIGHT,
  32   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_NORMAL_LEFT,
  33   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_NORMAL_CENTER,
  34   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_NORMAL_RIGHT,
  35   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_NORMAL_BOTTOM_LEFT,
  36   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_NORMAL_BOTTOM,
  37   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_NORMAL_BOTTOM_RIGHT
  38 };
  39 const int kLogoutButtonHotImages[] = {
  40   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_HOT_TOP_LEFT,
  41   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_HOT_TOP,
  42   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_HOT_TOP_RIGHT,
  43   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_HOT_LEFT,
  44   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_HOT_CENTER,
  45   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_HOT_RIGHT,
  46   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_HOT_BOTTOM_LEFT,
  47   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_HOT_BOTTOM,
  48   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_HOT_BOTTOM_RIGHT
  49 };
  50 const int kLogoutButtonPushedImages[] = {
  51   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_PUSHED_TOP_LEFT,
  52   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_PUSHED_TOP,
  53   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_PUSHED_TOP_RIGHT,
  54   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_PUSHED_LEFT,
  55   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_PUSHED_CENTER,
  56   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_PUSHED_RIGHT,
  57   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_PUSHED_BOTTOM_LEFT,
  58   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_PUSHED_BOTTOM,
  59   IDR_AURA_UBER_TRAY_LOGOUT_BUTTON_PUSHED_BOTTOM_RIGHT
  60 };
  61
  62 }  // namespace
  63
  64 namespace ash {
  65 namespace internal {
  66
  67 namespace tray {
  68
  69 class LogoutButton : public views::View,
  70                      public views::ButtonListener {
  71  public:
  72   LogoutButton(user::LoginStatus status) : button_(NULL),
  73                                            login_status_(user::LOGGED_IN_NONE),
  74                                            show_logout_button_in_tray_(false) {
  75     views::BoxLayout* layout = new views::BoxLayout(
  76         views::BoxLayout::kHorizontal, 0, 0, 0);
  77     layout->set_spread_blank_space(true);
  78     SetLayoutManager(layout);
  79     set_border(views::Border::CreateEmptyBorder(
  80         0, kTrayLabelItemHorizontalPaddingBottomAlignment, 0, 0));
  81
  82     button_ = new views::LabelButton(this, base::string16());
  83     for (size_t state = 0; state < views::Button::STATE_COUNT; ++state) {
  84       button_->SetTextColor(
  85           static_cast<views::Button::ButtonState>(state), SK_ColorWHITE);
  86     }
  87     button_->SetFont(button_->GetFont().DeriveFont(1));
  88     views::LabelButtonBorder* border =
  89         new views::LabelButtonBorder(views::Button::STYLE_TEXTBUTTON);
  90     border->SetPainter(false, views::Button::STATE_NORMAL,
  91         views::Painter::CreateImageGridPainter(kLogoutButtonNormalImages));
  92     border->SetPainter(false, views::Button::STATE_HOVERED,
  93         views::Painter::CreateImageGridPainter(kLogoutButtonHotImages));
  94     border->SetPainter(false, views::Button::STATE_PRESSED,
  95         views::Painter::CreateImageGridPainter(kLogoutButtonPushedImages));
  96     button_->set_border(border);
  97     AddChildView(button_);
  98     OnLoginStatusChanged(status);
  99   }
 100
 101   void OnLoginStatusChanged(user::LoginStatus status) {
 102     login_status_ = status;
 103     const base::string16 title = GetLocalizedSignOutStringForStatus(
 104         login_status_, false);
 105     button_->SetText(title);
 106     button_->SetAccessibleName(title);
 107     UpdateVisibility();
 108   }
 109
 110   void OnShowLogoutButtonInTrayChanged(bool show) {
 111     show_logout_button_in_tray_ = show;
 112     UpdateVisibility();
 113   }
 114
 115   // Overridden from views::ButtonListener.
 116   virtual void ButtonPressed(views::Button* sender,
 117                              const ui::Event& event) OVERRIDE {
 118     DCHECK_EQ(sender, button_);
 119     Shell::GetInstance()->system_tray_delegate()->SignOut();
 120   }
 121
 122  private:
 123   void UpdateVisibility() {
 124     SetVisible(show_logout_button_in_tray_ &&
 125                login_status_ != user::LOGGED_IN_NONE &&
 126                login_status_ != user::LOGGED_IN_LOCKED);
 127   }
 128
 129   views::LabelButton* button_;
 130   user::LoginStatus login_status_;
 131   bool show_logout_button_in_tray_;
 132
 133   DISALLOW_COPY_AND_ASSIGN(LogoutButton);
 134 };
 135
 136 }  // namespace tray
 137
 138 TrayLogoutButton::TrayLogoutButton(SystemTray* system_tray)
 139     : SystemTrayItem(system_tray),
 140       logout_button_(NULL) {
 141   Shell::GetInstance()->system_tray_notifier()->AddLogoutButtonObserver(this);
 142 }
 143
 144 TrayLogoutButton::~TrayLogoutButton() {
 145   Shell::GetInstance()->system_tray_notifier()->
 146       RemoveLogoutButtonObserver(this);
 147 }
 148
 149 views::View* TrayLogoutButton::CreateTrayView(user::LoginStatus status) {
 150   CHECK(logout_button_ == NULL);
 151   logout_button_ = new tray::LogoutButton(status);
 152   return logout_button_;
 153 }
 154
 155 void TrayLogoutButton::DestroyTrayView() {
 156   logout_button_ = NULL;
 157 }
 158
 159 void TrayLogoutButton::UpdateAfterLoginStatusChange(user::LoginStatus status) {
 160   logout_button_->OnLoginStatusChanged(status);
 161 }
 162
 163 void TrayLogoutButton::OnShowLogoutButtonInTrayChanged(bool show) {
 164   logout_button_->OnShowLogoutButtonInTrayChanged(show);
 165 }
 166
 167 }  // namespace internal
 168 }  // namespace ash