QScxmlDataModel Class

The QScxmlDataModel class is the data model base class for a Qt SCXML state machine. More...

Header: #include <QScxmlDataModel>
qmake: QT += scxml
Since: Qt 5.7
Inherits: QObject
Inherited By:

QScxmlCppDataModel, QScxmlEcmaScriptDataModel, and QScxmlNullDataModel

This class was introduced in Qt 5.7.

Public Types

Properties

  • 1 property inherited from QObject

Public Functions

QScxmlDataModel(QObject *parent = nullptr)
void setStateMachine(QScxmlStateMachine *stateMachine)
QScxmlStateMachine *stateMachine() const
  • 16 public functions inherited from QObject

Signals

void stateMachineChanged(QScxmlStateMachine *stateMachine)

Protected Functions

QScxmlDataModel(QScxmlDataModelPrivate &dd, QObject *parent = nullptr)
  • 8 protected functions inherited from QObject
typedef QObjectList

Macros

Additional Inherited Members

  • 1 public slot inherited from QObject
  • 5 static public members inherited from QObject

Detailed Description

SCXML data models are described in SCXML Specification - 5 Data Model and Data Manipulation. For more information about supported data models, see SCXML Compliance.

One data model can only belong to one state machine.

See also QScxmlStateMachine, QScxmlCppDataModel, QScxmlEcmaScriptDataModel, and QScxmlNullDataModel.

Property Documentation

stateMachine : QScxmlStateMachine*

This property holds the state machine this data model belongs to.

A data model can only belong to a single state machine and a state machine can only have one data model. This relation needs to be set up before the state machine is started. Setting this property on a data model will automatically set the corresponding dataModel property on the stateMachine.

Access functions:

QScxmlStateMachine *stateMachine() const
void setStateMachine(QScxmlStateMachine *stateMachine)

Notifier signal:

void stateMachineChanged(QScxmlStateMachine *stateMachine)

Member Function Documentation

[protected] QScxmlDataModel::QScxmlDataModel(QScxmlDataModelPrivate &dd, QObject *parent = nullptr)

Creates a new data model from the private object dd, with the parent object parent.

QScxmlDataModel::QScxmlDataModel(QObject *parent = nullptr)

Creates a new data model, with the parent object parent.

void QScxmlDataModel::setStateMachine(QScxmlStateMachine *stateMachine)

Sets the state machine this model belongs to to stateMachine. There is a 1:1 relation between state machines and models. After setting the state machine once you cannot change it anymore. Any further attempts to set the state machine using this method will be ignored.

Note: Setter function for property stateMachine.

See also stateMachine().

QScxmlStateMachine *QScxmlDataModel::stateMachine() const

Returns the state machine associated with the data model.

Note: Getter function for property stateMachine.

See also setStateMachine().