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#include "qscxmldatamodel_p.h"
#include "qscxmlnulldatamodel.h"
#include "qscxmlecmascriptdatamodel.h"
#include "qscxmlstatemachine_p.h"

QT_BEGIN_NAMESPACE

/*!
 * \class QScxmlDataModel::ForeachLoopBody
 * \internal
 */

QScxmlDataModel::ForeachLoopBody::~ForeachLoopBody()
{}

/*!
 * \class QScxmlDataModel
 * \brief The QScxmlDataModel class is the data model base class for a Qt SCXML
 * state machine.
 * \since 5.7
 * \inmodule QtScxml
 *
 * SCXML data models are described in
 * \l {SCXML Specification - 5 Data Model and Data Manipulation}. For more
 * information about supported data models, see \l {SCXML Compliance}.
 *
 * One data model can only belong to one state machine.
 *
 * \sa QScxmlStateMachine QScxmlCppDataModel QScxmlEcmaScriptDataModel QScxmlNullDataModel
 */

/*!
  \property QScxmlDataModel::stateMachine

  \brief 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 \c dataModel property on the
  \a stateMachine.
*/

/*!
 * Creates a new data model, with the parent object \a parent.
 */
QScxmlDataModel::QScxmlDataModel(QObject *parent)
    : QObject(*(new QScxmlDataModelPrivate), parent)
{
}

/*!
 * \internal
 */
QScxmlDataModel::QScxmlDataModel(QScxmlDataModelPrivate &dd, QObject *parent) :
    QObject(dd, parent)
{
}

/*! \internal */
QScxmlDataModel::~QScxmlDataModel()
{
}

/*!
 * Sets the state machine this model belongs to to \a 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.
 */
void QScxmlDataModel::setStateMachine(QScxmlStateMachine *stateMachine)
{
    Q_D(QScxmlDataModel);

    if (d->m_stateMachine == Q_NULLPTR && stateMachine != Q_NULLPTR) {
        d->m_stateMachine = stateMachine;
        if (stateMachine)
            stateMachine->setDataModel(this);
        emit stateMachineChanged(stateMachine);
    }
}

/*!
 * Returns the state machine associated with the data model.
 */
QScxmlStateMachine *QScxmlDataModel::stateMachine() const
{
    Q_D(const QScxmlDataModel);
    return d->m_stateMachine;
}

QScxmlTableData *QScxmlDataModel::tableData() const
{
    return stateMachine()->tableData();
}

QScxmlDataModel *QScxmlDataModelPrivate::instantiateDataModel(DocumentModel::Scxml::DataModelType type)
{
    QScxmlDataModel *dataModel = Q_NULLPTR;
    switch (type) {
    case DocumentModel::Scxml::NullDataModel:
        dataModel = new QScxmlNullDataModel;
        break;
    case DocumentModel::Scxml::JSDataModel:
        dataModel = new QScxmlEcmaScriptDataModel;
        break;
    case DocumentModel::Scxml::CppDataModel:
        break;
    default:
        Q_UNREACHABLE();
    }

    return dataModel;
}

/*!
 * \fn QScxmlDataModel::setup(const QVariantMap &initialDataValues)
 *
 * Initializes the data model with the initial values specified by
 * \a initialDataValues.
 *
 * Returns \c false if parse errors occur or if any of the initialization steps
 * fail. Returns \c true otherwise.
 */

/*!
 * \fn QScxmlDataModel::setScxmlEvent(const QScxmlEvent &event)
 *
 * Sets the \a event to use in the subsequent executable content execution.
 */

/*!
 * \fn QScxmlDataModel::scxmlProperty(const QString &name) const
 *
 * Returns the value of the property \a name.
 */

/*!
 * \fn QScxmlDataModel::hasScxmlProperty(const QString &name) const
 *
 * Returns \c true if a property with the given \a name exists, \c false
 * otherwise.
 */

/*!
 * \fn QScxmlDataModel::setScxmlProperty(const QString &name,
 *                                       const QVariant &value,
 *                                       const QString &context)
 *
 * Sets a the value \a value for the property \a name.
 *
 * The \a context is a string that is used in error messages to indicate the
 * location in the SCXML file where the error occurred.
 *
 * Returns \c true if successful or \c false if an error occurred.
 */

QT_END_NAMESPACE
