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