ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.cc

   1 // Copyright 2014 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/virtual_keyboard/virtual_keyboard_tray.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/system/status_area_widget.h"
   9 #include "ash/system/tray/system_tray_notifier.h"
  10 #include "ash/system/tray/tray_constants.h"
  11 #include "ash/system/tray/tray_utils.h"
  12 #include "grit/ash_resources.h"
  13 #include "grit/ash_strings.h"
  14 #include "ui/base/l10n/l10n_util.h"
  15 #include "ui/base/resource/resource_bundle.h"
  16 #include "ui/events/event.h"
  17 #include "ui/gfx/image/image_skia.h"
  18 #include "ui/keyboard/keyboard_controller.h"
  19 #include "ui/views/controls/button/image_button.h"
  20
  21 namespace ash {
  22 namespace internal {
  23
  24 namespace {
  25
  26 class VirtualKeyboardButton : public views::ImageButton {
  27  public:
  28   VirtualKeyboardButton(views::ButtonListener* listener);
  29   virtual ~VirtualKeyboardButton();
  30
  31   // Overridden from views::ImageButton:
  32   virtual gfx::Size GetPreferredSize() OVERRIDE;
  33
  34  private:
  35   DISALLOW_COPY_AND_ASSIGN(VirtualKeyboardButton);
  36 };
  37
  38 VirtualKeyboardButton::VirtualKeyboardButton(views::ButtonListener* listener)
  39     : views::ImageButton(listener) {
  40 }
  41
  42 VirtualKeyboardButton::~VirtualKeyboardButton() {
  43 }
  44
  45 gfx::Size VirtualKeyboardButton::GetPreferredSize() {
  46   const int virtual_keyboard_button_height = GetShelfItemHeight();
  47   gfx::Size size = ImageButton::GetPreferredSize();
  48   int padding = virtual_keyboard_button_height - size.height();
  49   size.set_height(virtual_keyboard_button_height);
  50   size.set_width(size.width() + padding);
  51   return size;
  52 }
  53
  54 }  // namespace
  55
  56 VirtualKeyboardTray::VirtualKeyboardTray(StatusAreaWidget* status_area_widget)
  57     : TrayBackgroundView(status_area_widget),
  58       button_(NULL) {
  59   button_ = new VirtualKeyboardButton(this);
  60   button_->SetImage(views::CustomButton::STATE_NORMAL,
  61                     ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
  62                         IDR_AURA_UBER_TRAY_VIRTUAL_KEYBOARD));
  63   button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
  64                              views::ImageButton::ALIGN_MIDDLE);
  65
  66   tray_container()->AddChildView(button_);
  67   SetContentsBackground();
  68   SetVisible(false);
  69   // The Shell may not exist in some unit tests.
  70   if (Shell::HasInstance()) {
  71     Shell::GetInstance()->system_tray_notifier()->
  72         AddAccessibilityObserver(this);
  73   }
  74 }
  75
  76 VirtualKeyboardTray::~VirtualKeyboardTray() {
  77   // The Shell may not exist in some unit tests.
  78   if (Shell::HasInstance()) {
  79     Shell::GetInstance()->system_tray_notifier()->
  80         RemoveAccessibilityObserver(this);
  81   }
  82 }
  83
  84 void VirtualKeyboardTray::SetShelfAlignment(ShelfAlignment alignment) {
  85   TrayBackgroundView::SetShelfAlignment(alignment);
  86   tray_container()->SetBorder(views::Border::NullBorder());
  87 }
  88
  89 base::string16 VirtualKeyboardTray::GetAccessibleNameForTray() {
  90   return l10n_util::GetStringUTF16(
  91       IDS_ASH_VIRTUAL_KEYBOARD_TRAY_ACCESSIBLE_NAME);
  92 }
  93
  94 void VirtualKeyboardTray::HideBubbleWithView(
  95     const views::TrayBubbleView* bubble_view) {
  96 }
  97
  98 bool VirtualKeyboardTray::ClickedOutsideBubble() {
  99   return false;
 100 }
 101
 102 bool VirtualKeyboardTray::PerformAction(const ui::Event& event) {
 103   Shell::GetInstance()->keyboard_controller()->ShowAndLockKeyboard();
 104   return true;
 105 }
 106
 107 void VirtualKeyboardTray::ButtonPressed(views::Button* sender,
 108                                         const ui::Event& event) {
 109   DCHECK_EQ(button_, sender);
 110   PerformAction(event);
 111 }
 112
 113 void VirtualKeyboardTray::OnAccessibilityModeChanged(
 114     AccessibilityNotificationVisibility notify) {
 115   SetVisible(Shell::GetInstance()->accessibility_delegate()->
 116       IsVirtualKeyboardEnabled());
 117 }
 118
 119 }  // namespace internal
 120 }  // namespace ash