ash/system/tray_caps_lock.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_caps_lock.h"
   6
   7 #include "ash/caps_lock_delegate.h"
   8 #include "ash/shell.h"
   9 #include "ash/system/tray/system_tray_notifier.h"
  10 #include "ash/system/tray/tray_constants.h"
  11 #include "ash/system/tray/tray_views.h"
  12 #include "grit/ash_resources.h"
  13 #include "grit/ash_strings.h"
  14 #include "ui/base/accessibility/accessible_view_state.h"
  15 #include "ui/base/resource/resource_bundle.h"
  16 #include "ui/gfx/image/image.h"
  17 #include "ui/views/controls/image_view.h"
  18 #include "ui/views/controls/label.h"
  19 #include "ui/views/layout/box_layout.h"
  20 #include "ui/views/widget/widget.h"
  21
  22 namespace ash {
  23 namespace internal {
  24
  25 class CapsLockDefaultView : public ActionableView {
  26  public:
  27   CapsLockDefaultView()
  28       : text_label_(new views::Label),
  29         shortcut_label_(new views::Label) {
  30     SetLayoutManager(new views::BoxLayout(views::BoxLayout::kHorizontal,
  31                                           kTrayPopupPaddingHorizontal,
  32                                           0,
  33                                           kTrayPopupPaddingBetweenItems));
  34
  35     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
  36     FixedSizedImageView* image =
  37         new FixedSizedImageView(0, kTrayPopupItemHeight);
  38     image->SetImage(bundle.GetImageNamed(IDR_AURA_UBER_TRAY_CAPS_LOCK_DARK).
  39         ToImageSkia());
  40     AddChildView(image);
  41
  42     text_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  43     AddChildView(text_label_);
  44
  45     shortcut_label_->SetEnabled(false);
  46     AddChildView(shortcut_label_);
  47   }
  48
  49   virtual ~CapsLockDefaultView() {}
  50
  51   // Updates the label text and the shortcut text.
  52   void Update(bool caps_lock_enabled, bool search_mapped_to_caps_lock) {
  53     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
  54     const int text_string_id = caps_lock_enabled ?
  55         IDS_ASH_STATUS_TRAY_CAPS_LOCK_ENABLED :
  56         IDS_ASH_STATUS_TRAY_CAPS_LOCK_DISABLED;
  57     text_label_->SetText(bundle.GetLocalizedString(text_string_id));
  58
  59     int shortcut_string_id = 0;
  60     if (caps_lock_enabled) {
  61       shortcut_string_id = search_mapped_to_caps_lock ?
  62           IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_SEARCH_OR_SHIFT :
  63           IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_ALT_SEARCH_OR_SHIFT;
  64     } else {
  65       shortcut_string_id = search_mapped_to_caps_lock ?
  66           IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_SEARCH :
  67           IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_ALT_SEARCH;
  68     }
  69     shortcut_label_->SetText(bundle.GetLocalizedString(shortcut_string_id));
  70
  71     Layout();
  72   }
  73
  74  private:
  75   // Overridden from views::View:
  76   virtual void Layout() OVERRIDE {
  77     views::View::Layout();
  78
  79     // Align the shortcut text with the right end
  80     const int old_x = shortcut_label_->x();
  81     const int new_x =
  82         width() - shortcut_label_->width() - kTrayPopupPaddingHorizontal;
  83     shortcut_label_->SetX(new_x);
  84     const gfx::Size text_size = text_label_->size();
  85     text_label_->SetSize(gfx::Size(text_size.width() + new_x - old_x,
  86                                    text_size.height()));
  87   }
  88
  89   virtual void GetAccessibleState(ui::AccessibleViewState* state) OVERRIDE {
  90     state->role = ui::AccessibilityTypes::ROLE_PUSHBUTTON;
  91     state->name = text_label_->text();
  92   }
  93
  94   // Overridden from ActionableView:
  95   virtual bool PerformAction(const ui::Event& event) OVERRIDE {
  96     Shell::GetInstance()->caps_lock_delegate()->ToggleCapsLock();
  97     return true;
  98   }
  99
 100   views::Label* text_label_;
 101   views::Label* shortcut_label_;
 102
 103   DISALLOW_COPY_AND_ASSIGN(CapsLockDefaultView);
 104 };
 105
 106 TrayCapsLock::TrayCapsLock(SystemTray* system_tray)
 107     : TrayImageItem(system_tray, IDR_AURA_UBER_TRAY_CAPS_LOCK),
 108       default_(NULL),
 109       detailed_(NULL),
 110       search_mapped_to_caps_lock_(false),
 111       caps_lock_enabled_(
 112           Shell::GetInstance()->caps_lock_delegate()->IsCapsLockEnabled()),
 113       message_shown_(false) {
 114   Shell::GetInstance()->system_tray_notifier()->AddCapsLockObserver(this);
 115 }
 116
 117 TrayCapsLock::~TrayCapsLock() {
 118   Shell::GetInstance()->system_tray_notifier()->RemoveCapsLockObserver(this);
 119 }
 120
 121 bool TrayCapsLock::GetInitialVisibility() {
 122   return Shell::GetInstance()->caps_lock_delegate()->IsCapsLockEnabled();
 123 }
 124
 125 views::View* TrayCapsLock::CreateDefaultView(user::LoginStatus status) {
 126   if (!caps_lock_enabled_)
 127     return NULL;
 128   DCHECK(default_ == NULL);
 129   default_ = new CapsLockDefaultView;
 130   default_->Update(caps_lock_enabled_, search_mapped_to_caps_lock_);
 131   return default_;
 132 }
 133
 134 views::View* TrayCapsLock::CreateDetailedView(user::LoginStatus status) {
 135   DCHECK(detailed_ == NULL);
 136   detailed_ = new views::View;
 137
 138   detailed_->SetLayoutManager(new
 139       views::BoxLayout(views::BoxLayout::kHorizontal,
 140       kTrayPopupPaddingHorizontal, 10, kTrayPopupPaddingBetweenItems));
 141
 142   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
 143   views::ImageView* image = new views::ImageView;
 144   image->SetImage(bundle.GetImageNamed(IDR_AURA_UBER_TRAY_CAPS_LOCK_DARK).
 145       ToImageSkia());
 146
 147   detailed_->AddChildView(image);
 148
 149   const int string_id = search_mapped_to_caps_lock_ ?
 150       IDS_ASH_STATUS_TRAY_CAPS_LOCK_CANCEL_BY_SEARCH :
 151       IDS_ASH_STATUS_TRAY_CAPS_LOCK_CANCEL_BY_ALT_SEARCH;
 152   views::Label* label = new views::Label(bundle.GetLocalizedString(string_id));
 153   label->SetMultiLine(true);
 154   label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 155   detailed_->AddChildView(label);
 156
 157   return detailed_;
 158 }
 159
 160 void TrayCapsLock::DestroyDefaultView() {
 161   default_ = NULL;
 162 }
 163
 164 void TrayCapsLock::DestroyDetailedView() {
 165   detailed_ = NULL;
 166 }
 167
 168 void TrayCapsLock::OnCapsLockChanged(bool enabled,
 169                                      bool search_mapped_to_caps_lock) {
 170   if (tray_view())
 171     tray_view()->SetVisible(enabled);
 172
 173   caps_lock_enabled_ = enabled;
 174   search_mapped_to_caps_lock_ = search_mapped_to_caps_lock;
 175
 176   if (default_) {
 177     default_->Update(enabled, search_mapped_to_caps_lock);
 178   } else {
 179     if (enabled) {
 180       if (!message_shown_) {
 181         PopupDetailedView(kTrayPopupAutoCloseDelayForTextInSeconds, false);
 182         message_shown_ = true;
 183       }
 184     } else if (detailed_) {
 185       detailed_->GetWidget()->Close();
 186     }
 187   }
 188 }
 189
 190 }  // namespace internal
 191 }  // namespace ash