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// Copyright 2013 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.
#ifndef DEVICE_NFC_NFC_ADAPTER_CHROMEOS_H_
#define DEVICE_NFC_NFC_ADAPTER_CHROMEOS_H_
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "chromeos/dbus/nfc_adapter_client.h"
#include "chromeos/dbus/nfc_device_client.h"
#include "chromeos/dbus/nfc_tag_client.h"
#include "dbus/object_path.h"
#include "device/nfc/nfc_adapter.h"
namespace device {
class NfcAdapterFactory;
} // namespace device
namespace chromeos {
// The NfcAdapterChromeOS class implements NfcAdapter for the Chrome OS
// platform.
class NfcAdapterChromeOS : public device::NfcAdapter,
public chromeos::NfcAdapterClient::Observer,
public chromeos::NfcDeviceClient::Observer,
public chromeos::NfcTagClient::Observer {
public:
// NfcAdapter overrides.
void AddObserver(NfcAdapter::Observer* observer) override;
void RemoveObserver(NfcAdapter::Observer* observer) override;
bool IsPresent() const override;
bool IsPowered() const override;
bool IsPolling() const override;
bool IsInitialized() const override;
void SetPowered(bool powered,
const base::Closure& callback,
const ErrorCallback& error_callback) override;
void StartPolling(const base::Closure& callback,
const ErrorCallback& error_callback) override;
void StopPolling(const base::Closure& callback,
const ErrorCallback& error_callback) override;
private:
friend class device::NfcAdapterFactory;
friend class NfcChromeOSTest;
NfcAdapterChromeOS();
~NfcAdapterChromeOS() override;
// NfcAdapterClient::Observer overrides.
void AdapterAdded(const dbus::ObjectPath& object_path) override;
void AdapterRemoved(const dbus::ObjectPath& object_path) override;
void AdapterPropertyChanged(const dbus::ObjectPath& object_path,
const std::string& property_name) override;
// NfcDeviceClient::Observer overrides.
void DeviceAdded(const dbus::ObjectPath& object_path) override;
void DeviceRemoved(const dbus::ObjectPath& object_path) override;
// NfcTagClient::Observer overrides.
void TagAdded(const dbus::ObjectPath& object_path) override;
void TagRemoved(const dbus::ObjectPath& object_path) override;
// Set the tracked adapter to the one in |object_path|, this object will
// subsequently operate on that adapter until it is removed.
void SetAdapter(const dbus::ObjectPath& object_path);
// Remove the currently tracked adapter. IsPresent() will return false after
// this is called.
void RemoveAdapter();
// Announce to observers a change in the adapter state.
void PoweredChanged(bool powered);
void PollingChanged(bool polling);
void PresentChanged(bool present);
// Called by dbus:: on completion of the powered property change.
void OnSetPowered(const base::Closure& callback,
const ErrorCallback& error_callback,
bool success);
// Called by dbus:: on completion of the D-Bus method call to start polling.
void OnStartPolling(const base::Closure& callback);
void OnStartPollingError(const ErrorCallback& error_callback,
const std::string& error_name,
const std::string& error_message);
// Called by dbus:: on completion of the D-Bus method call to stop polling.
void OnStopPolling(const base::Closure& callback);
void OnStopPollingError(const ErrorCallback& error_callback,
const std::string& error_name,
const std::string& error_message);
// Object path of the adapter that we are currently tracking.
dbus::ObjectPath object_path_;
// List of observers interested in event notifications from us.
ObserverList<device::NfcAdapter::Observer> observers_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate its weak pointers before any other members are destroyed.
base::WeakPtrFactory<NfcAdapterChromeOS> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(NfcAdapterChromeOS);
};
} // namespace chromeos
#endif // DEVICE_NFC_NFC_ADAPTER_CHROMEOS_H_