ash/virtual_keyboard_controller.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/virtual_keyboard_controller.h"
   6
   7 #include <vector>
   8
   9 #include "ash/shell.h"
  10 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
  11 #include "base/command_line.h"
  12 #include "base/strings/string_util.h"
  13 #include "ui/events/devices/device_data_manager.h"
  14 #include "ui/events/devices/input_device.h"
  15 #include "ui/events/devices/keyboard_device.h"
  16 #include "ui/events/devices/touchscreen_device.h"
  17 #include "ui/gfx/x/x11_types.h"
  18 #include "ui/keyboard/keyboard_switches.h"
  19 #include "ui/keyboard/keyboard_util.h"
  20
  21 namespace ash {
  22 namespace {
  23
  24 // Checks whether smart deployment is enabled.
  25 bool IsSmartVirtualKeyboardEnabled() {
  26   return base::CommandLine::ForCurrentProcess()->HasSwitch(
  27       keyboard::switches::kEnableAutoVirtualKeyboard);
  28 }
  29
  30 }  // namespace
  31
  32 VirtualKeyboardController::VirtualKeyboardController()
  33     : has_external_keyboard_(false),
  34       has_internal_keyboard_(false),
  35       has_touchscreen_(false),
  36       ignore_external_keyboard_(false) {
  37   Shell::GetInstance()->AddShellObserver(this);
  38   ui::DeviceDataManager::GetInstance()->AddObserver(this);
  39   UpdateDevices();
  40 }
  41
  42 VirtualKeyboardController::~VirtualKeyboardController() {
  43   Shell::GetInstance()->RemoveShellObserver(this);
  44   ui::DeviceDataManager::GetInstance()->RemoveObserver(this);
  45 }
  46
  47 void VirtualKeyboardController::OnMaximizeModeStarted() {
  48   if (!IsSmartVirtualKeyboardEnabled())
  49     SetKeyboardEnabled(true);
  50 }
  51
  52 void VirtualKeyboardController::OnMaximizeModeEnded() {
  53   if (!IsSmartVirtualKeyboardEnabled())
  54     SetKeyboardEnabled(false);
  55 }
  56
  57 void VirtualKeyboardController::OnTouchscreenDeviceConfigurationChanged() {
  58   UpdateDevices();
  59 }
  60
  61 void VirtualKeyboardController::OnKeyboardDeviceConfigurationChanged() {
  62   UpdateDevices();
  63 }
  64
  65 void VirtualKeyboardController::ToggleIgnoreExternalKeyboard() {
  66   ignore_external_keyboard_ = !ignore_external_keyboard_;
  67   UpdateKeyboardEnabled();
  68 }
  69
  70 void VirtualKeyboardController::UpdateDevices() {
  71   ui::DeviceDataManager* device_data_manager =
  72       ui::DeviceDataManager::GetInstance();
  73
  74   // Checks for touchscreens.
  75   has_touchscreen_ = device_data_manager->touchscreen_devices().size() > 0;
  76
  77   // Checks for keyboards.
  78   has_external_keyboard_ = false;
  79   has_internal_keyboard_ = false;
  80   for (const ui::KeyboardDevice& device :
  81        device_data_manager->keyboard_devices()) {
  82     if (has_internal_keyboard_ && has_external_keyboard_)
  83       break;
  84     ui::InputDeviceType type = device.type;
  85     if (type == ui::InputDeviceType::INPUT_DEVICE_INTERNAL)
  86       has_internal_keyboard_ = true;
  87     if (type == ui::InputDeviceType::INPUT_DEVICE_EXTERNAL)
  88       has_external_keyboard_ = true;
  89   }
  90   // Update keyboard state.
  91   UpdateKeyboardEnabled();
  92 }
  93
  94 void VirtualKeyboardController::UpdateKeyboardEnabled() {
  95   if (!IsSmartVirtualKeyboardEnabled()) {
  96     SetKeyboardEnabled(Shell::GetInstance()
  97                            ->maximize_mode_controller()
  98                            ->IsMaximizeModeWindowManagerEnabled());
  99     return;
 100   }
 101   SetKeyboardEnabled(!has_internal_keyboard_ && has_touchscreen_ &&
 102                      (!has_external_keyboard_ || ignore_external_keyboard_));
 103   ash::Shell::GetInstance()
 104       ->system_tray_notifier()
 105       ->NotifyVirtualKeyboardSuppressionChanged(!has_internal_keyboard_ &&
 106                                                 has_touchscreen_ &&
 107                                                 has_external_keyboard_);
 108 }
 109
 110 void VirtualKeyboardController::SetKeyboardEnabled(bool enabled) {
 111   keyboard::SetTouchKeyboardEnabled(enabled);
 112   if (enabled) {
 113     Shell::GetInstance()->CreateKeyboard();
 114   } else {
 115     if (!keyboard::IsKeyboardEnabled())
 116       Shell::GetInstance()->DeactivateKeyboard();
 117   }
 118 }
 119
 120 }  // namespace ash