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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 CHROMEOS_DBUS_NFC_ADAPTER_CLIENT_H_
#define CHROMEOS_DBUS_NFC_ADAPTER_CLIENT_H_
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/macros.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 "dbus/object_path.h"
#include "dbus/object_proxy.h"
#include "dbus/property.h"
namespace chromeos {
class NfcManagerClient;
// NfcAdapterClient is used to communicate with objects representing local NFC
// adapters.
class CHROMEOS_EXPORT NfcAdapterClient : public DBusClient {
public:
// Structure of properties associated with an NFC adapter.
struct Properties : public NfcPropertySet {
// The adapter NFC radio mode. One of "Initiator", "Target", and "Idle".
// The NFC adapter will usually be in the "Idle" mode. The mode will change
// to "Initiator" or "Target" based on how a pairing is established with a
// remote tag or device. Read-only.
dbus::Property<std::string> mode;
// The adapter's current power state. Read-write.
dbus::Property<bool> powered;
// Indicates whether or not the adapter is currently polling for targets.
// This property is only valid when |mode| is "Initiator". Read-only.
dbus::Property<bool> polling;
// The NFC protocols that are supported by the adapter. Possible values
// are: "Felica", "MIFARE", "Jewel", "ISO-DEP", and "NFC-DEP". Read-only.
dbus::Property<std::vector<std::string> > protocols;
// The object paths of the NFC tags that are known to the local adapter.
// These are tags that have been "tapped" on the local adapter. Read-only.
dbus::Property<std::vector<dbus::ObjectPath> > tags;
// The object paths of the remote NFC devices that have been found by the
// local adapter. These are NFC adapters that were "tapped" on the local
// adapter. Read-only.
dbus::Property<std::vector<dbus::ObjectPath> > devices;
Properties(dbus::ObjectProxy* object_proxy,
const PropertyChangedCallback& callback);
~Properties() override;
};
// Interface for observing changes from a local NFC adapter.
class Observer {
public:
virtual ~Observer() {}
// Called when a new adapter with object path |object_path| is added to the
// system.
virtual void AdapterAdded(const dbus::ObjectPath& object_path) {}
// Called when an adapter with object path |object_path| is removed from the
// system.
virtual void AdapterRemoved(const dbus::ObjectPath& object_path) {}
// Called when the adapter property with the name |property_name| on adapter
// with object path |object_path| has acquired a new value.
virtual void AdapterPropertyChanged(const dbus::ObjectPath& object_path,
const std::string& property_name) {}
};
~NfcAdapterClient() override;
// Adds and removes observers for events on all local bluetooth adapters.
// Check the |object_path| parameter of the observer methods to determine
// which adapter is issuing the event.
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Returns the list of adapter object paths known to the system.
virtual std::vector<dbus::ObjectPath> GetAdapters() = 0;
// Obtains the properties for the adapter with object path |object_path|, any
// values should be copied if needed. A NULL pointer will be returned, if no
// adapter with the given object path is known to exist.
virtual Properties* GetProperties(const dbus::ObjectPath& object_path) = 0;
// Starts the polling loop for the adapter with object path |object_path|.
// Depending on the mode, the adapter will start polling for targets,
// listening to NFC devices, or both. The |mode| parameter should be one of
// "Initiator", "Target", or "Dual". The "Dual" mode will have the adapter
// alternate between "Initiator" and "Target" modes during the polling loop.
// For any other value, the adapter will default to "Initiator" mode.
virtual void StartPollLoop(
const dbus::ObjectPath& object_path,
const std::string& mode,
const base::Closure& callback,
const nfc_client_helpers::ErrorCallback& error_callback) = 0;
// Stops the polling loop for the adapter with object_path |object_path|.
virtual void StopPollLoop(
const dbus::ObjectPath& object_path,
const base::Closure& callback,
const nfc_client_helpers::ErrorCallback& error_callback) = 0;
// Creates the instance.
static NfcAdapterClient* Create(NfcManagerClient* manager_client);
protected:
friend class NfcClientTest;
NfcAdapterClient();
private:
DISALLOW_COPY_AND_ASSIGN(NfcAdapterClient);
};
} // namespace chromeos
#endif // CHROMEOS_DBUS_NFC_ADAPTER_CLIENT_H_
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