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 "ash_switches.h"
  12 #include "base/command_line.h"
  13 #include "base/strings/string_util.h"
  14 #include "ui/events/devices/device_data_manager.h"
  15 #include "ui/events/devices/input_device.h"
  16 #include "ui/events/devices/keyboard_device.h"
  17 #include "ui/events/devices/touchscreen_device.h"
  18 #include "ui/gfx/x/x11_types.h"
  19 #include "ui/keyboard/keyboard_switches.h"
  20 #include "ui/keyboard/keyboard_util.h"
  21
  22 namespace ash {
  23 namespace {
  24
  25 // Checks whether smart deployment is enabled.
  26 bool IsSmartVirtualKeyboardEnabled() {
  27   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
  28           keyboard::switches::kEnableVirtualKeyboard)) {
  29     return false;
  30   }
  31   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
  32       keyboard::switches::kDisableSmartVirtualKeyboard);
  33 }
  34
  35 }  // namespace
  36
  37 VirtualKeyboardController::VirtualKeyboardController()
  38     : has_external_keyboard_(false),
  39       has_internal_keyboard_(false),
  40       has_touchscreen_(false),
  41       ignore_external_keyboard_(false) {
  42   Shell::GetInstance()->AddShellObserver(this);
  43   ui::DeviceDataManager::GetInstance()->AddObserver(this);
  44   UpdateDevices();
  45 }
  46
  47 VirtualKeyboardController::~VirtualKeyboardController() {
  48   Shell::GetInstance()->RemoveShellObserver(this);
  49   ui::DeviceDataManager::GetInstance()->RemoveObserver(this);
  50 }
  51
  52 void VirtualKeyboardController::OnMaximizeModeStarted() {
  53   if (!IsSmartVirtualKeyboardEnabled())
  54     SetKeyboardEnabled(true);
  55 }
  56
  57 void VirtualKeyboardController::OnMaximizeModeEnded() {
  58   if (!IsSmartVirtualKeyboardEnabled())
  59     SetKeyboardEnabled(false);
  60 }
  61
  62 void VirtualKeyboardController::OnTouchscreenDeviceConfigurationChanged() {
  63   UpdateDevices();
  64 }
  65
  66 void VirtualKeyboardController::OnKeyboardDeviceConfigurationChanged() {
  67   UpdateDevices();
  68 }
  69
  70 void VirtualKeyboardController::ToggleIgnoreExternalKeyboard() {
  71   ignore_external_keyboard_ = !ignore_external_keyboard_;
  72   UpdateKeyboardEnabled();
  73 }
  74
  75 void VirtualKeyboardController::UpdateDevices() {
  76   ui::DeviceDataManager* device_data_manager =
  77       ui::DeviceDataManager::GetInstance();
  78
  79   // Checks for touchscreens.
  80   has_touchscreen_ = device_data_manager->touchscreen_devices().size() > 0;
  81
  82   // Checks for keyboards.
  83   has_external_keyboard_ = false;
  84   has_internal_keyboard_ = false;
  85   for (const ui::KeyboardDevice& device :
  86        device_data_manager->keyboard_devices()) {
  87     if (has_internal_keyboard_ && has_external_keyboard_)
  88       break;
  89     ui::InputDeviceType type = device.type;
  90     if (type == ui::InputDeviceType::INPUT_DEVICE_INTERNAL)
  91       has_internal_keyboard_ = true;
  92     if (type == ui::InputDeviceType::INPUT_DEVICE_EXTERNAL)
  93       has_external_keyboard_ = true;
  94   }
  95   // Update keyboard state.
  96   UpdateKeyboardEnabled();
  97 }
  98
  99 void VirtualKeyboardController::UpdateKeyboardEnabled() {
 100   if (!IsSmartVirtualKeyboardEnabled()) {
 101     SetKeyboardEnabled(Shell::GetInstance()
 102                            ->maximize_mode_controller()
 103                            ->IsMaximizeModeWindowManagerEnabled());
 104     return;
 105   }
 106   SetKeyboardEnabled(!has_internal_keyboard_ && has_touchscreen_ &&
 107                      (!has_external_keyboard_ || ignore_external_keyboard_));
 108   ash::Shell::GetInstance()
 109       ->system_tray_notifier()
 110       ->NotifyVirtualKeyboardSuppressionChanged(!has_internal_keyboard_ &&
 111                                                 has_touchscreen_ &&
 112                                                 has_external_keyboard_);
 113 }
 114
 115 void VirtualKeyboardController::SetKeyboardEnabled(bool enabled) {
 116   keyboard::SetTouchKeyboardEnabled(enabled);
 117   if (enabled) {
 118     Shell::GetInstance()->CreateKeyboard();
 119   } else {
 120     if (!keyboard::IsKeyboardEnabled())
 121       Shell::GetInstance()->DeactivateKeyboard();
 122   }
 123 }
 124
 125 }  // namespace ash