chrome/browser/chromeos/system/pointer_device_observer.cc

   1 // Copyright (c) 2012 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 "chrome/browser/chromeos/system/pointer_device_observer.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/bind.h"
   9 #include "base/bind_helpers.h"
  10 #include "chrome/browser/chromeos/system/input_device_settings.h"
  11 #include "content/public/browser/browser_thread.h"
  12 #include "ui/events/devices/device_data_manager.h"
  13
  14 using content::BrowserThread;
  15
  16 namespace chromeos {
  17 namespace system {
  18
  19 PointerDeviceObserver::PointerDeviceObserver()
  20     : weak_factory_(this) {
  21 }
  22
  23 PointerDeviceObserver::~PointerDeviceObserver() {
  24   ui::DeviceDataManager::GetInstance()->RemoveObserver(this);
  25 }
  26
  27 void PointerDeviceObserver::Init() {
  28   ui::DeviceDataManager::GetInstance()->AddObserver(this);
  29 }
  30
  31 void PointerDeviceObserver::CheckDevices() {
  32   CheckMouseExists();
  33   CheckTouchpadExists();
  34 }
  35
  36 void PointerDeviceObserver::AddObserver(Observer* observer) {
  37   observers_.AddObserver(observer);
  38 }
  39
  40 void PointerDeviceObserver::RemoveObserver(Observer* observer) {
  41   observers_.RemoveObserver(observer);
  42 }
  43
  44 void PointerDeviceObserver::OnMouseDeviceConfigurationChanged() {
  45   CheckDevices();
  46 }
  47
  48 void PointerDeviceObserver::OnTouchpadDeviceConfigurationChanged() {
  49   CheckDevices();
  50 }
  51
  52 void PointerDeviceObserver::CheckTouchpadExists() {
  53   InputDeviceSettings::Get()->TouchpadExists(
  54       base::Bind(&PointerDeviceObserver::OnTouchpadExists,
  55                  weak_factory_.GetWeakPtr()));
  56 }
  57
  58 void PointerDeviceObserver::CheckMouseExists() {
  59   InputDeviceSettings::Get()->MouseExists(
  60       base::Bind(&PointerDeviceObserver::OnMouseExists,
  61                  weak_factory_.GetWeakPtr()));
  62 }
  63
  64 void PointerDeviceObserver::OnTouchpadExists(bool exists) {
  65   FOR_EACH_OBSERVER(Observer, observers_, TouchpadExists(exists));
  66 }
  67
  68 void PointerDeviceObserver::OnMouseExists(bool exists) {
  69   FOR_EACH_OBSERVER(Observer, observers_, MouseExists(exists));
  70 }
  71
  72 PointerDeviceObserver::Observer::~Observer() {
  73 }
  74
  75 }  // namespace system
  76 }  // namespace chromeos