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****************************************************************************/

#ifndef OPCUAEVENTFILTER
#define OPCUAEVENTFILTER

#include <QQmlListProperty>

#include "opcuasimpleattributeoperand.h"
#include "opcuafilterelement.h"
#include <QOpcUaMonitoringParameters>
#include <QVector>

QT_BEGIN_NAMESPACE

class OpcUaNodeId;
class OpcUaRelativeNodePath;

class OpcUaEventFilter : public QObject {
    Q_OBJECT
    Q_PROPERTY(QQmlListProperty<OpcUaFilterElement> where READ filterElements)
    Q_PROPERTY(QQmlListProperty<OpcUaSimpleAttributeOperand> select READ selectors)

public:
    explicit OpcUaEventFilter(QObject *parent = nullptr);
    ~OpcUaEventFilter();
    bool operator==(const OpcUaEventFilter &other) const;
    QOpcUaMonitoringParameters::EventFilter filter(QOpcUaClient *client) const;

    QQmlListProperty<OpcUaSimpleAttributeOperand> selectors();
    void appendSelector(OpcUaSimpleAttributeOperand *selector);
    int selectorCount() const;
    OpcUaSimpleAttributeOperand *selector(int index) const;
    void clearSelectors();

    QQmlListProperty<OpcUaFilterElement> filterElements();
    void appendFilterElement(OpcUaFilterElement *filterElement);
    int filterElementCount() const;
    OpcUaFilterElement *filterElement(int index) const;
    void clearFilterElements();

signals:
    void dataChanged();

private:
    static void appendSelector(QQmlListProperty<OpcUaSimpleAttributeOperand> *list, OpcUaSimpleAttributeOperand *);
    static int selectorCount(QQmlListProperty<OpcUaSimpleAttributeOperand> *list);
    static OpcUaSimpleAttributeOperand* selector(QQmlListProperty<OpcUaSimpleAttributeOperand> *list, int index);
    static void clearSelectors(QQmlListProperty<OpcUaSimpleAttributeOperand> *list);

    static void appendFilterElement(QQmlListProperty<OpcUaFilterElement> *list, OpcUaFilterElement *nodeId);
    static int filterElementCount(QQmlListProperty<OpcUaFilterElement> *list);
    static OpcUaFilterElement* filterElement(QQmlListProperty<OpcUaFilterElement> *list, int index);
    static void clearFilterElements(QQmlListProperty<OpcUaFilterElement> *list);

    QVector<OpcUaFilterElement*> m_filterElements;
    QVector<OpcUaSimpleAttributeOperand*> m_selectors;
};

QT_END_NAMESPACE

#endif // OPCUAEVENTFILTER