mash: Convert virtual keyboard system tray item to wm common types

ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h"
-
-#include "ash/common/keyboard/keyboard_ui.h"
-#include "ash/common/material_design/material_design_controller.h"
-#include "ash/common/shelf/shelf_constants.h"
-#include "ash/common/shelf/wm_shelf_util.h"
-#include "ash/common/system/tray/tray_constants.h"
-#include "ash/common/system/tray/tray_utils.h"
-#include "ash/shell.h"
-#include "grit/ash_resources.h"
-#include "grit/ash_strings.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/events/event.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/gfx/paint_vector_icon.h"
-#include "ui/gfx/vector_icons_public.h"
-#include "ui/views/controls/button/image_button.h"
-
-namespace ash {
-
-VirtualKeyboardTray::VirtualKeyboardTray(WmShelf* wm_shelf)
-    : TrayBackgroundView(wm_shelf), button_(nullptr) {
-  button_ = new views::ImageButton(this);
-  if (MaterialDesignController::IsShelfMaterial()) {
-    gfx::ImageSkia image_md =
-        CreateVectorIcon(gfx::VectorIconId::SHELF_KEYBOARD, kShelfIconColor);
-    button_->SetImage(views::CustomButton::STATE_NORMAL, &image_md);
-  } else {
-    gfx::ImageSkia* image_non_md =
-        ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
-            IDR_AURA_UBER_TRAY_VIRTUAL_KEYBOARD);
-    button_->SetImage(views::CustomButton::STATE_NORMAL, image_non_md);
-  }
-  button_->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
-                             views::ImageButton::ALIGN_MIDDLE);
-
-  tray_container()->AddChildView(button_);
-  button_->SetFocusBehavior(FocusBehavior::NEVER);
-  SetContentsBackground();
-  // The Shell may not exist in some unit tests.
-  if (Shell::HasInstance())
-    Shell::GetInstance()->keyboard_ui()->AddObserver(this);
-}
-
-VirtualKeyboardTray::~VirtualKeyboardTray() {
-  // The Shell may not exist in some unit tests.
-  if (Shell::HasInstance())
-    Shell::GetInstance()->keyboard_ui()->RemoveObserver(this);
-}
-
-void VirtualKeyboardTray::SetShelfAlignment(ShelfAlignment alignment) {
-  TrayBackgroundView::SetShelfAlignment(alignment);
-  tray_container()->SetBorder(views::Border::NullBorder());
-
-  // Pad button size to align with other controls in the system tray.
-  const gfx::ImageSkia image =
-      button_->GetImage(views::CustomButton::STATE_NORMAL);
-  const int size = GetTrayConstant(VIRTUAL_KEYBOARD_BUTTON_SIZE);
-  const int vertical_padding = (size - image.height()) / 2;
-  int horizontal_padding = (size - image.width()) / 2;
-  if (!ash::MaterialDesignController::IsShelfMaterial() &&
-      IsHorizontalAlignment(alignment)) {
-    // Square up the padding if horizontally aligned. Avoid extra padding when
-    // vertically aligned as the button would violate the width constraint on
-    // the shelf.
-    horizontal_padding += std::max(0, vertical_padding - horizontal_padding);
-  }
-
-  button_->SetBorder(views::Border::CreateEmptyBorder(
-      gfx::Insets(vertical_padding, horizontal_padding)));
-}
-
-base::string16 VirtualKeyboardTray::GetAccessibleNameForTray() {
-  return l10n_util::GetStringUTF16(
-      IDS_ASH_VIRTUAL_KEYBOARD_TRAY_ACCESSIBLE_NAME);
-}
-
-void VirtualKeyboardTray::HideBubbleWithView(
-    const views::TrayBubbleView* bubble_view) {}
-
-void VirtualKeyboardTray::ClickedOutsideBubble() {}
-
-bool VirtualKeyboardTray::PerformAction(const ui::Event& event) {
-  Shell::GetInstance()->keyboard_ui()->Show();
-  return true;
-}
-
-void VirtualKeyboardTray::ButtonPressed(views::Button* sender,
-                                        const ui::Event& event) {
-  DCHECK_EQ(button_, sender);
-  PerformAction(event);
-}
-
-void VirtualKeyboardTray::OnKeyboardEnabledStateChanged(bool new_value) {
-  SetVisible(Shell::GetInstance()->keyboard_ui()->IsEnabled());
-}
-
-}  // namespace ash