qnearfieldtarget_ios_p.h

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// Copyright (C) 2020 Governikus GmbH & Co. KG

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#ifndef QNEARFIELDTARGET_IOS_P_H

#define QNEARFIELDTARGET_IOS_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "qnearfieldtarget_p.h"

#include "qnearfieldtarget.h"

#include "qndefmessage.h"

#include <QQueue>

#include <QTimer>

#include <memory>

#include <deque>

QT_BEGIN_NAMESPACE

class ResponseProvider : public QObject

    Q_OBJECT

    public:

        void provideResponse(QNearFieldTarget::RequestId requestId, QNearFieldTarget::Error error, QByteArray recvBuffer);

    Q_SIGNALS:

        void responseReceived(QNearFieldTarget::RequestId requestId, QNearFieldTarget::Error error, QByteArray recvBuffer);

};

struct NfcDeleter

    void operator()(void *tag);

};

struct NdefOperation

    enum Type {

        Read,

        Write

    } type = Read;

    QNearFieldTarget::RequestId requestId;

    QNdefMessage message;

};

class QNfcNdefNotifier;

class QNearFieldTargetPrivateImpl : public QNearFieldTargetPrivate

    Q_OBJECT

public:

    QNearFieldTargetPrivateImpl(void *tag, QObject *parent = nullptr);

    QNearFieldTargetPrivateImpl(void *sessionDelegate, void *tag, QObject *parent = nullptr);

    ~QNearFieldTargetPrivateImpl() override;

    void invalidate();

    QByteArray uid() const override;

    QNearFieldTarget::Type type() const override;

    QNearFieldTarget::AccessMethods accessMethods() const override;

    int maxCommandLength() const override;

    QNearFieldTarget::RequestId sendCommand(const QByteArray &command) override;

    // NdefAccess

    bool hasNdefMessage() override;

    QNearFieldTarget::RequestId readNdefMessages() override;

    QNearFieldTarget::RequestId writeNdefMessages(const QList<QNdefMessage> &messages) override;

    bool isAvailable() const;

Q_SIGNALS:

    void targetLost(QNearFieldTargetPrivateImpl *target);

private:

    std::unique_ptr<void, NfcDeleter> nfcTag;

    // Owned by the near field manager.

    void *sessionDelegate = nil;

    // Owned by the session delegate.

    QNfcNdefNotifier *notifier = nullptr;

    bool hasNDEFMessage = false;

    bool connected = false;

    bool justConnected = false;

    QTimer targetCheckTimer;

    QNearFieldTarget::RequestId requestInProgress;

    QQueue<std::pair<QNearFieldTarget::RequestId, QByteArray>> queue;

    std::deque<NdefOperation> ndefOperations;

    bool connect();

    bool isNdefTag() const;

private Q_SLOTS:

    void onTargetCheck();

    void onTargetError(QNearFieldTarget::Error error, const QNearFieldTarget::RequestId &id);

    void onExecuteRequest();

    void onResponseReceived(QNearFieldTarget::RequestId requestId, QNearFieldTarget::Error error, QByteArray recvBuffer);

    // NDEF:

    void messageRead(const QNdefMessage &ndefMessage, QNearFieldTarget::RequestId request);

    void messageWritten(QNearFieldTarget::RequestId request);

};

QT_END_NAMESPACE

#endif // QNEARFIELDTARGET_IOS_P_H