The QQmlNdefRecord class implements the NdefRecord type in QML. More...
| Header: | #include <QQmlNdefRecord> |
| qmake: | QT += nfc |
| Since: | Qt 5.2 |
| Instantiated By: | NdefRecord |
| Inherits: | QObject |
| enum | TypeNameFormat { Empty, NfcRtd, Mime, Uri, ExternalRtd, Unknown } |
| QQmlNdefRecord(QObject *parent = nullptr) | |
| QQmlNdefRecord(const QNdefRecord &record, QObject *parent = nullptr) | |
| virtual | ~QQmlNdefRecord() |
| QNdefRecord | record() const |
| void | setRecord(const QNdefRecord &record) |
| void | setType(const QString &newtype) |
| void | setTypeNameFormat(QQmlNdefRecord::TypeNameFormat newTypeNameFormat) |
| QString | type() const |
| QQmlNdefRecord::TypeNameFormat | typeNameFormat() const |
| void | recordChanged() |
| void | typeChanged() |
| void | typeNameFormatChanged() |
| Q_DECLARE_NDEFRECORD(className, typeNameFormat, type) |
The QQmlNdefRecord class implements the NdefRecord type in QML.
The QQmlNdefRecord class is the base class for all NdefRecord types in QML. To support a new NDEF record type in QML subclass this class and expose new properties, member functions and signals appropriate for the new record type. The following must be done to create a new NDEF record type in QML:
For example the declaration of such a class may look like the following.
class QQmlNdefFooRecord : public QQmlNdefRecord { Q_OBJECT Q_PROPERTY(int foo READ foo WRITE setFoo NOTIFY fooChanged) public: explicit QQmlNdefFooRecord(QObject *parent = 0); Q_INVOKABLE QQmlNdefFooRecord(const QNdefRecord &record, QObject *parent = 0); ~QQmlNdefFooRecord(); int foo() const; void setFoo(int value); signals: void fooChanged(); };
Within the implementation file the Q_DECLARE_NDEFRECORD() macro is expanded:
Q_DECLARE_NDEFRECORD(QQmlNdefFooRecord, QNdefRecord::ExternalRtd, "com.example:f")
Finially the application or plugin code calls qmlRegisterType():
qmlRegisterType<QQmlNdefFooRecord>(uri, 1, 0, "NdefFooRecord");
See also NdefRecord.
This enum describes the type name format of an NDEF record. The values of this enum are according to QNdefRecord::TypeNameFormat
| Constant | Value | Description |
|---|---|---|
QQmlNdefRecord::Empty |
QNdefRecord::Empty |
An empty NDEF record, the record does not contain a payload. |
QQmlNdefRecord::NfcRtd |
QNdefRecord::NfcRtd |
The NDEF record type is defined by an NFC RTD Specification. |
QQmlNdefRecord::Mime |
QNdefRecord::Mime |
The NDEF record type follows the construct described in RFC 2046. |
QQmlNdefRecord::Uri |
QNdefRecord::Uri |
The NDEF record type follows the construct described in RFC 3986. |
QQmlNdefRecord::ExternalRtd |
QNdefRecord::ExternalRtd |
The NDEF record type follows the construct for external type names described the NFC RTD Specification. |
QQmlNdefRecord::Unknown |
QNdefRecord::Unknown |
The NDEF record type is unknown. |
This property hold the NDEF record that this class represents.
Access functions:
Notifier signal:
| void | recordChanged() |
This property hold the type of the NDEF record.
Access functions:
Notifier signal:
| void | typeChanged() |
This property hold the TNF of the NDEF record.
Access functions:
| QQmlNdefRecord::TypeNameFormat | typeNameFormat() const |
| void | setTypeNameFormat(QQmlNdefRecord::TypeNameFormat newTypeNameFormat) |
Notifier signal:
| void | typeNameFormatChanged() |
Constructs a new empty QQmlNdefRecord with parent.
Constructs a new QQmlNdefRecord representing record. The parent of the newly constructed object will be set to parent.
[virtual] QQmlNdefRecord::~QQmlNdefRecord()Destroys the QQmlNdefRecord instance.
Returns a copy of the record.
Note: Getter function for property record.
See also setRecord().
Sets the record to record. If the record is set the recordChanged() signal will be emitted.
Note: Setter function for property record.
See also record().
Sets the record type to newtype if it is not currently equal to type(); otherwise does nothing. If the record type is set the typeChanged() signal will be emitted.
Note: Setter function for property type.
See also QNdefRecord::setType() and QNdefRecord::type().
Sets the type name format of the NDEF record to newTypeNameFormat.
Note: Setter function for property typeNameFormat.
See also typeNameFormat().
Returns the type of the record.
Note: Getter function for property type.
See also QNdefRecord::setType() and QNdefRecord::type().
[signal] void QQmlNdefRecord::typeChanged()This signal is emitted when the record type changes.
Note: Notifier signal for property type.
Returns the type name format of the NDEF record.
Note: Getter function for property typeNameFormat.
See also setTypeNameFormat().
