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      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/chromeos/settings/tray_settings.h"
      6 
      7 #include "ash/session/session_state_delegate.h"
      8 #include "ash/shell.h"
      9 #include "ash/system/chromeos/power/power_status.h"
     10 #include "ash/system/chromeos/power/power_status_view.h"
     11 #include "ash/system/tray/actionable_view.h"
     12 #include "ash/system/tray/fixed_sized_image_view.h"
     13 #include "ash/system/tray/system_tray_delegate.h"
     14 #include "ash/system/tray/tray_constants.h"
     15 #include "base/logging.h"
     16 #include "base/strings/utf_string_conversions.h"
     17 #include "grit/ash_resources.h"
     18 #include "grit/ash_strings.h"
     19 #include "third_party/skia/include/core/SkColor.h"
     20 #include "ui/base/resource/resource_bundle.h"
     21 #include "ui/gfx/image/image.h"
     22 #include "ui/views/controls/image_view.h"
     23 #include "ui/views/controls/label.h"
     24 #include "ui/views/layout/box_layout.h"
     25 #include "ui/views/layout/fill_layout.h"
     26 #include "ui/views/view.h"
     27 
     28 namespace ash {
     29 namespace tray {
     30 
     31 class SettingsDefaultView : public ActionableView,
     32                             public PowerStatus::Observer {
     33  public:
     34   explicit SettingsDefaultView(user::LoginStatus status)
     35       : login_status_(status),
     36         label_(NULL),
     37         power_status_view_(NULL) {
     38     PowerStatus::Get()->AddObserver(this);
     39     SetLayoutManager(new views::BoxLayout(views::BoxLayout::kHorizontal,
     40         ash::kTrayPopupPaddingHorizontal, 0,
     41         ash::kTrayPopupPaddingBetweenItems));
     42 
     43     bool power_view_right_align = false;
     44     bool userAddingRunning = ash::Shell::GetInstance()
     45                                  ->session_state_delegate()
     46                                  ->IsInSecondaryLoginScreen();
     47 
     48     if (login_status_ != user::LOGGED_IN_NONE &&
     49         login_status_ != user::LOGGED_IN_LOCKED && !userAddingRunning) {
     50       ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
     51       views::ImageView* icon =
     52           new ash::FixedSizedImageView(0, ash::kTrayPopupItemHeight);
     53       icon->SetImage(
     54           rb.GetImageNamed(IDR_AURA_UBER_TRAY_SETTINGS).ToImageSkia());
     55       icon->set_id(test::kSettingsTrayItemViewId);
     56       AddChildView(icon);
     57 
     58       base::string16 text = rb.GetLocalizedString(IDS_ASH_STATUS_TRAY_SETTINGS);
     59       label_ = new views::Label(text);
     60       AddChildView(label_);
     61       SetAccessibleName(text);
     62 
     63       power_view_right_align = true;
     64     }
     65 
     66     if (PowerStatus::Get()->IsBatteryPresent()) {
     67       power_status_view_ = new ash::PowerStatusView(
     68           ash::PowerStatusView::VIEW_DEFAULT, power_view_right_align);
     69       AddChildView(power_status_view_);
     70       OnPowerStatusChanged();
     71     }
     72   }
     73 
     74   virtual ~SettingsDefaultView() {
     75     PowerStatus::Get()->RemoveObserver(this);
     76   }
     77 
     78   // Overridden from ash::ActionableView.
     79   virtual bool PerformAction(const ui::Event& event) OVERRIDE {
     80     bool userAddingRunning = ash::Shell::GetInstance()
     81                                  ->session_state_delegate()
     82                                  ->IsInSecondaryLoginScreen();
     83 
     84     if (login_status_ == user::LOGGED_IN_NONE ||
     85         login_status_ == user::LOGGED_IN_LOCKED || userAddingRunning)
     86       return false;
     87 
     88     ash::Shell::GetInstance()->system_tray_delegate()->ShowSettings();
     89     return true;
     90   }
     91 
     92   // Overridden from views::View.
     93   virtual void Layout() OVERRIDE {
     94     views::View::Layout();
     95 
     96     if (label_ && power_status_view_) {
     97       // Let the box-layout do the layout first. Then move power_status_view_
     98       // to right align if it is created.
     99       gfx::Size size = power_status_view_->GetPreferredSize();
    100       gfx::Rect bounds(size);
    101       bounds.set_x(width() - size.width() - ash::kTrayPopupPaddingBetweenItems);
    102       bounds.set_y((height() - size.height()) / 2);
    103       power_status_view_->SetBoundsRect(bounds);
    104     }
    105   }
    106 
    107   // Overridden from views::View.
    108   virtual void ChildPreferredSizeChanged(views::View* child) OVERRIDE {
    109     views::View::ChildPreferredSizeChanged(child);
    110     Layout();
    111   }
    112 
    113   // Overridden from PowerStatus::Observer.
    114   virtual void OnPowerStatusChanged() OVERRIDE {
    115     if (!PowerStatus::Get()->IsBatteryPresent())
    116       return;
    117 
    118     base::string16 accessible_name = label_ ?
    119         label_->text() + base::ASCIIToUTF16(", ") +
    120             PowerStatus::Get()->GetAccessibleNameString(true) :
    121         PowerStatus::Get()->GetAccessibleNameString(true);
    122     SetAccessibleName(accessible_name);
    123   }
    124 
    125  private:
    126   user::LoginStatus login_status_;
    127   views::Label* label_;
    128   ash::PowerStatusView* power_status_view_;
    129 
    130   DISALLOW_COPY_AND_ASSIGN(SettingsDefaultView);
    131  };
    132 
    133 }  // namespace tray
    134 
    135 TraySettings::TraySettings(SystemTray* system_tray)
    136     : SystemTrayItem(system_tray),
    137       default_view_(NULL) {
    138 }
    139 
    140 TraySettings::~TraySettings() {
    141 }
    142 
    143 views::View* TraySettings::CreateTrayView(user::LoginStatus status) {
    144   return NULL;
    145 }
    146 
    147 views::View* TraySettings::CreateDefaultView(user::LoginStatus status) {
    148   if ((status == user::LOGGED_IN_NONE || status == user::LOGGED_IN_LOCKED) &&
    149       !PowerStatus::Get()->IsBatteryPresent())
    150     return NULL;
    151   if (!ash::Shell::GetInstance()->system_tray_delegate()->ShouldShowSettings())
    152     return NULL;
    153   CHECK(default_view_ == NULL);
    154   default_view_ =  new tray::SettingsDefaultView(status);
    155   return default_view_;
    156 }
    157 
    158 views::View* TraySettings::CreateDetailedView(user::LoginStatus status) {
    159   NOTIMPLEMENTED();
    160   return NULL;
    161 }
    162 
    163 void TraySettings::DestroyTrayView() {
    164 }
    165 
    166 void TraySettings::DestroyDefaultView() {
    167   default_view_ = NULL;
    168 }
    169 
    170 void TraySettings::DestroyDetailedView() {
    171 }
    172 
    173 void TraySettings::UpdateAfterLoginStatusChange(user::LoginStatus status) {
    174 }
    175 
    176 }  // namespace ash
    177