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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.
#include <map>
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/values.h"
#include "chromeos/chromeos_export.h"
#include "chromeos/dbus/dbus_client.h"
#include "chromeos/dbus/nfc_client_helpers.h"
#include "chromeos/dbus/nfc_property_set.h"
#include "chromeos/dbus/nfc_record_client.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
#include "dbus/property.h"
namespace chromeos {
class NfcAdapterClient;
// NfcDeviceClient is used to communicate with objects representing remote NFC
// devices that can be communicated with.
class CHROMEOS_EXPORT NfcDeviceClient : public DBusClient {
// Structure of properties associated with an NFC device.
struct Properties : public NfcPropertySet {
// List of object paths for NDEF records associated with the NFC device.
// Read-only.
dbus::Property<std::vector<dbus::ObjectPath> > records;
Properties(dbus::ObjectProxy* object_proxy,
const PropertyChangedCallback& callback);
~Properties() override;
// Interface for observing changes from a remote NFC device.
class Observer {
virtual ~Observer() {}
// Called when a remote NFC device with the object |object_path| is added
// to the set of known devices.
virtual void DeviceAdded(const dbus::ObjectPath& object_path) {}
// Called when a remote NFC device with the object path |object_path| is
// removed from the set of known devices.
virtual void DeviceRemoved(const dbus::ObjectPath& object_path) {}
// Called when the device property with the name |property_name| on device
// with object path |object_path| has acquired a new value.
virtual void DevicePropertyChanged(const dbus::ObjectPath& object_path,
const std::string& property_name) {}
~NfcDeviceClient() override;
// Adds and removes observers for events on all remote NFC devices. Check the
// |object_path| parameter of observer methods to determine which device is
// issuing the event.
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Returns the list of device object paths associated with the given adapter
// identified by the D-Bus object path |adapter_path|.
virtual std::vector<dbus::ObjectPath> GetDevicesForAdapter(
const dbus::ObjectPath& adapter_path) = 0;
// Obtain the properties for the NFC device with object path |object_path|;
// any values should be copied if needed.
virtual Properties* GetProperties(const dbus::ObjectPath& object_path) = 0;
// Creates an NDEF record for the NFC device with object path |object_path|
// using the parameters in |attributes|. |attributes| is a dictionary,
// containing the NFC Record properties which will be assigned to the
// resulting record object and pushed to the device. The properties are
// defined by the NFC Record interface (see namespace "nfc_record" in
// third_party/cros_system_api/dbus/service_constants.h and
// NfcRecordClient::Properties). |attributes| should at least contain a
// "Type" plus any other properties associated with that type. For example:
// {
// "Type": "Text",
// "Encoding": "UTF-8",
// "Language": "en",
// "Representation": "Chrome OS rulez!"
// },
// {
// "Type": "URI",
// "URI": ""
// },
// etc.
virtual void Push(
const dbus::ObjectPath& object_path,
const base::DictionaryValue& attributes,
const base::Closure& callback,
const nfc_client_helpers::ErrorCallback& error_callback) = 0;
// Creates the instance.
static NfcDeviceClient* Create(NfcAdapterClient* adapter_client);
friend class NfcClientTest;
} // namespace chromeos