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// Copyright (c) 2012 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 "chrome/browser/chromeos/system/pointer_device_observer.h"
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "chrome/browser/chromeos/system/input_device_settings.h"
#include "chrome/browser/chromeos/xinput_hierarchy_changed_event_listener.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace chromeos {
namespace system {
namespace {
void TouchpadExistsFileThread(bool* exists) {
*exists = touchpad_settings::TouchpadExists();
}
void MouseExistsFileThread(bool* exists) {
*exists = mouse_settings::MouseExists();
}
} // namespace
PointerDeviceObserver::PointerDeviceObserver()
: ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)) {
}
PointerDeviceObserver::~PointerDeviceObserver() {
XInputHierarchyChangedEventListener::GetInstance()
->RemoveObserver(this);
}
void PointerDeviceObserver::Init() {
XInputHierarchyChangedEventListener::GetInstance()
->AddObserver(this);
}
void PointerDeviceObserver::CheckDevices() {
CheckMouseExists();
CheckTouchpadExists();
}
void PointerDeviceObserver::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void PointerDeviceObserver::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void PointerDeviceObserver::DeviceHierarchyChanged() {
CheckDevices();
}
void PointerDeviceObserver::CheckTouchpadExists() {
bool* exists = new bool;
BrowserThread::PostTaskAndReply(BrowserThread::FILE, FROM_HERE,
base::Bind(&TouchpadExistsFileThread, exists),
base::Bind(&PointerDeviceObserver::OnTouchpadExists,
weak_factory_.GetWeakPtr(),
base::Owned(exists)));
}
void PointerDeviceObserver::CheckMouseExists() {
bool* exists = new bool;
BrowserThread::PostTaskAndReply(BrowserThread::FILE, FROM_HERE,
base::Bind(&MouseExistsFileThread, exists),
base::Bind(&PointerDeviceObserver::OnMouseExists,
weak_factory_.GetWeakPtr(),
base::Owned(exists)));
}
void PointerDeviceObserver::OnTouchpadExists(bool* exists) {
FOR_EACH_OBSERVER(Observer, observers_, TouchpadExists(*exists));
}
void PointerDeviceObserver::OnMouseExists(bool* exists) {
FOR_EACH_OBSERVER(Observer, observers_, MouseExists(*exists));
}
PointerDeviceObserver::Observer::~Observer() {
}
} // namespace system
} // namespace chromeos
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