ash/system/tray_accessibility.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/tray_accessibility.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/shell_delegate.h"
   9 #include "ash/system/tray/tray_constants.h"
  10 #include "ash/system/tray/tray_views.h"
  11 #include "grit/ash_strings.h"
  12 #include "grit/ui_resources.h"
  13 #include "ui/base/resource/resource_bundle.h"
  14 #include "ui/gfx/image/image.h"
  15 #include "ui/views/controls/image_view.h"
  16 #include "ui/views/controls/label.h"
  17 #include "ui/views/layout/box_layout.h"
  18 #include "ui/views/widget/widget.h"
  19
  20 namespace ash {
  21 namespace internal {
  22
  23 class DefaultAccessibilityView : public ActionableView {
  24  public:
  25   DefaultAccessibilityView() {
  26     SetLayoutManager(new views::BoxLayout(views::BoxLayout::kHorizontal,
  27                                           kTrayPopupPaddingHorizontal,
  28                                           0,
  29                                           kTrayPopupPaddingBetweenItems));
  30
  31     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
  32     FixedSizedImageView* image =
  33         new FixedSizedImageView(0, kTrayPopupItemHeight);
  34     image->SetImage(bundle.GetImageNamed(IDR_AURA_UBER_TRAY_ACCESSIBILITY_DARK).
  35                     ToImageSkia());
  36
  37     AddChildView(image);
  38     string16 label = bundle.GetLocalizedString(
  39         IDS_ASH_STATUS_TRAY_DISABLE_SPOKEN_FEEDBACK);
  40     AddChildView(new views::Label(label));
  41     SetAccessibleName(label);
  42   }
  43
  44   virtual ~DefaultAccessibilityView() {}
  45
  46  protected:
  47   // Overridden from ActionableView.
  48   virtual bool PerformAction(const ui::Event& event) OVERRIDE {
  49     if (Shell::GetInstance()->delegate()->IsSpokenFeedbackEnabled())
  50       Shell::GetInstance()->delegate()->ToggleSpokenFeedback();
  51     GetWidget()->Close();
  52     return true;
  53   }
  54
  55  private:
  56
  57   DISALLOW_COPY_AND_ASSIGN(DefaultAccessibilityView);
  58 };
  59
  60 TrayAccessibility::TrayAccessibility()
  61     : TrayImageItem(IDR_AURA_UBER_TRAY_ACCESSIBILITY),
  62       default_(NULL),
  63       detailed_(NULL) {
  64 }
  65
  66 TrayAccessibility::~TrayAccessibility() {}
  67
  68 bool TrayAccessibility::GetInitialVisibility() {
  69   return Shell::GetInstance()->delegate() &&
  70       Shell::GetInstance()->delegate()->IsSpokenFeedbackEnabled();
  71 }
  72
  73 views::View* TrayAccessibility::CreateDefaultView(user::LoginStatus status) {
  74   if (!Shell::GetInstance()->delegate()->IsSpokenFeedbackEnabled())
  75     return NULL;
  76
  77   CHECK(default_ == NULL);
  78   default_ = new DefaultAccessibilityView();
  79
  80   return default_;
  81 }
  82
  83 views::View* TrayAccessibility::CreateDetailedView(user::LoginStatus status) {
  84   CHECK(detailed_ == NULL);
  85   detailed_ = new views::View;
  86
  87   detailed_->SetLayoutManager(new
  88       views::BoxLayout(views::BoxLayout::kHorizontal,
  89       kTrayPopupPaddingHorizontal, 10, kTrayPopupPaddingBetweenItems));
  90
  91   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
  92   views::ImageView* image = new views::ImageView;
  93   image->SetImage(bundle.GetImageNamed(IDR_AURA_UBER_TRAY_ACCESSIBILITY_DARK).
  94       ToImageSkia());
  95
  96   detailed_->AddChildView(image);
  97   detailed_->AddChildView(new views::Label(bundle.GetLocalizedString(
  98       IDS_ASH_STATUS_TRAY_ACCESSIBILITY_TURNED_ON_BUBBLE)));
  99
 100   return detailed_;
 101 }
 102
 103 void TrayAccessibility::DestroyDefaultView() {
 104   default_ = NULL;
 105 }
 106
 107 void TrayAccessibility::DestroyDetailedView() {
 108   detailed_ = NULL;
 109 }
 110
 111 void TrayAccessibility::OnAccessibilityModeChanged(bool enabled) {
 112   if (tray_view())
 113     tray_view()->SetVisible(enabled);
 114
 115   if (enabled) {
 116     PopupDetailedView(kTrayPopupAutoCloseDelayForTextInSeconds, false);
 117   } else if (detailed_) {
 118     detailed_->GetWidget()->Close();
 119   }
 120 }
 121
 122 }  // namespace internal
 123 }  // namespace ash