src/ash/system/chromeos/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/chromeos/tray_caps_lock.h"
   6
   7 #include "ash/metrics/user_metrics_recorder.h"
   8 #include "ash/shell.h"
   9 #include "ash/system/tray/actionable_view.h"
  10 #include "ash/system/tray/fixed_sized_image_view.h"
  11 #include "ash/system/tray/system_tray_delegate.h"
  12 #include "ash/system/tray/system_tray_notifier.h"
  13 #include "ash/system/tray/tray_constants.h"
  14 #include "base/sys_info.h"
  15 #include "chromeos/ime/ime_keyboard.h"
  16 #include "chromeos/ime/input_method_manager.h"
  17 #include "grit/ash_resources.h"
  18 #include "grit/ash_strings.h"
  19 #include "ui/accessibility/ax_view_state.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/widget/widget.h"
  26
  27 namespace ash {
  28 namespace {
  29
  30 bool CapsLockIsEnabled() {
  31   chromeos::input_method::InputMethodManager* ime =
  32       chromeos::input_method::InputMethodManager::Get();
  33   return (ime && ime->GetImeKeyboard())
  34              ? ime->GetImeKeyboard()->CapsLockIsEnabled()
  35              : false;
  36 }
  37
  38 }
  39
  40 class CapsLockDefaultView : public ActionableView {
  41  public:
  42   CapsLockDefaultView()
  43       : text_label_(new views::Label),
  44         shortcut_label_(new views::Label) {
  45     SetLayoutManager(new views::BoxLayout(views::BoxLayout::kHorizontal,
  46                                           kTrayPopupPaddingHorizontal,
  47                                           0,
  48                                           kTrayPopupPaddingBetweenItems));
  49
  50     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
  51     FixedSizedImageView* image =
  52         new FixedSizedImageView(0, kTrayPopupItemHeight);
  53     image->SetImage(bundle.GetImageNamed(IDR_AURA_UBER_TRAY_CAPS_LOCK_DARK).
  54         ToImageSkia());
  55     AddChildView(image);
  56
  57     text_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  58     AddChildView(text_label_);
  59
  60     shortcut_label_->SetEnabled(false);
  61     AddChildView(shortcut_label_);
  62   }
  63
  64   virtual ~CapsLockDefaultView() {}
  65
  66   // Updates the label text and the shortcut text.
  67   void Update(bool caps_lock_enabled) {
  68     ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
  69     const int text_string_id = caps_lock_enabled ?
  70         IDS_ASH_STATUS_TRAY_CAPS_LOCK_ENABLED :
  71         IDS_ASH_STATUS_TRAY_CAPS_LOCK_DISABLED;
  72     text_label_->SetText(bundle.GetLocalizedString(text_string_id));
  73
  74     int shortcut_string_id = 0;
  75     bool search_mapped_to_caps_lock = Shell::GetInstance()->
  76         system_tray_delegate()->IsSearchKeyMappedToCapsLock();
  77     if (caps_lock_enabled) {
  78       shortcut_string_id = search_mapped_to_caps_lock ?
  79           IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_SEARCH_OR_SHIFT :
  80           IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_ALT_SEARCH_OR_SHIFT;
  81     } else {
  82       shortcut_string_id = search_mapped_to_caps_lock ?
  83           IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_SEARCH :
  84           IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_ALT_SEARCH;
  85     }
  86     shortcut_label_->SetText(bundle.GetLocalizedString(shortcut_string_id));
  87
  88     Layout();
  89   }
  90
  91  private:
  92   // Overridden from views::View:
  93   virtual void Layout() OVERRIDE {
  94     views::View::Layout();
  95
  96     // Align the shortcut text with the right end
  97     const int old_x = shortcut_label_->x();
  98     const int new_x =
  99         width() - shortcut_label_->width() - kTrayPopupPaddingHorizontal;
 100     shortcut_label_->SetX(new_x);
 101     const gfx::Size text_size = text_label_->size();
 102     text_label_->SetSize(gfx::Size(text_size.width() + new_x - old_x,
 103                                    text_size.height()));
 104   }
 105
 106   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE {
 107     state->role = ui::AX_ROLE_BUTTON;
 108     state->name = text_label_->text();
 109   }
 110
 111   // Overridden from ActionableView:
 112   virtual bool PerformAction(const ui::Event& event) OVERRIDE {
 113     chromeos::input_method::ImeKeyboard* keyboard =
 114         chromeos::input_method::InputMethodManager::Get()->GetImeKeyboard();
 115     if (keyboard) {
 116       Shell::GetInstance()->metrics()->RecordUserMetricsAction(
 117           keyboard->CapsLockIsEnabled() ?
 118           ash::UMA_STATUS_AREA_CAPS_LOCK_DISABLED_BY_CLICK :
 119           ash::UMA_STATUS_AREA_CAPS_LOCK_ENABLED_BY_CLICK);
 120       keyboard->SetCapsLockEnabled(!keyboard->CapsLockIsEnabled());
 121     }
 122     return true;
 123   }
 124
 125   views::Label* text_label_;
 126   views::Label* shortcut_label_;
 127
 128   DISALLOW_COPY_AND_ASSIGN(CapsLockDefaultView);
 129 };
 130
 131 TrayCapsLock::TrayCapsLock(SystemTray* system_tray)
 132     : TrayImageItem(system_tray, IDR_AURA_UBER_TRAY_CAPS_LOCK),
 133       default_(NULL),
 134       detailed_(NULL),
 135       caps_lock_enabled_(CapsLockIsEnabled()),
 136       message_shown_(false) {
 137   chromeos::input_method::InputMethodManager* ime =
 138       chromeos::input_method::InputMethodManager::Get();
 139   if (ime && ime->GetImeKeyboard())
 140     ime->GetImeKeyboard()->AddObserver(this);
 141 }
 142
 143 TrayCapsLock::~TrayCapsLock() {
 144   chromeos::input_method::InputMethodManager* ime =
 145       chromeos::input_method::InputMethodManager::Get();
 146   if (ime && ime->GetImeKeyboard())
 147     ime->GetImeKeyboard()->RemoveObserver(this);
 148 }
 149
 150 void TrayCapsLock::OnCapsLockChanged(bool enabled) {
 151   caps_lock_enabled_ = enabled;
 152
 153   if (tray_view())
 154     tray_view()->SetVisible(caps_lock_enabled_);
 155
 156   if (default_) {
 157     default_->Update(caps_lock_enabled_);
 158   } else {
 159     if (caps_lock_enabled_) {
 160       if (!message_shown_) {
 161         Shell::GetInstance()->metrics()->RecordUserMetricsAction(
 162             ash::UMA_STATUS_AREA_CAPS_LOCK_POPUP);
 163         PopupDetailedView(kTrayPopupAutoCloseDelayForTextInSeconds, false);
 164         message_shown_ = true;
 165       }
 166     } else if (detailed_) {
 167       detailed_->GetWidget()->Close();
 168     }
 169   }
 170 }
 171
 172 bool TrayCapsLock::GetInitialVisibility() {
 173   return CapsLockIsEnabled();
 174 }
 175
 176 views::View* TrayCapsLock::CreateDefaultView(user::LoginStatus status) {
 177   if (!caps_lock_enabled_)
 178     return NULL;
 179   DCHECK(default_ == NULL);
 180   default_ = new CapsLockDefaultView;
 181   default_->Update(caps_lock_enabled_);
 182   return default_;
 183 }
 184
 185 views::View* TrayCapsLock::CreateDetailedView(user::LoginStatus status) {
 186   DCHECK(detailed_ == NULL);
 187   detailed_ = new views::View;
 188
 189   detailed_->SetLayoutManager(new
 190       views::BoxLayout(views::BoxLayout::kHorizontal,
 191       kTrayPopupPaddingHorizontal, 10, kTrayPopupPaddingBetweenItems));
 192
 193   ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
 194   views::ImageView* image = new views::ImageView;
 195   image->SetImage(bundle.GetImageNamed(IDR_AURA_UBER_TRAY_CAPS_LOCK_DARK).
 196       ToImageSkia());
 197
 198   detailed_->AddChildView(image);
 199
 200   const int string_id = Shell::GetInstance()->system_tray_delegate()->
 201                             IsSearchKeyMappedToCapsLock() ?
 202       IDS_ASH_STATUS_TRAY_CAPS_LOCK_CANCEL_BY_SEARCH :
 203       IDS_ASH_STATUS_TRAY_CAPS_LOCK_CANCEL_BY_ALT_SEARCH;
 204   views::Label* label = new views::Label(bundle.GetLocalizedString(string_id));
 205   label->SetMultiLine(true);
 206   label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 207   detailed_->AddChildView(label);
 208   Shell::GetInstance()->metrics()->RecordUserMetricsAction(
 209       ash::UMA_STATUS_AREA_CAPS_LOCK_DETAILED);
 210
 211   return detailed_;
 212 }
 213
 214 void TrayCapsLock::DestroyDefaultView() {
 215   default_ = NULL;
 216 }
 217
 218 void TrayCapsLock::DestroyDetailedView() {
 219   detailed_ = NULL;
 220 }
 221
 222 }  // namespace ash