element.h

/*
  element.h

  This file is part of the KDAB State Machine Editor Library.

  Copyright (C) 2014-2016 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com.
  All rights reserved.
  Author: Kevin Funk <kevin.funk@kdab.com>
  Author: Volker Krause <volker.krause@kdab.com>

  Licensees holding valid commercial KDAB State Machine Editor Library
  licenses may use this file in accordance with the KDAB State Machine Editor
  Library License Agreement provided with the Software.

  This file may be distributed and/or modified under the terms of the
  GNU Lesser General Public License version 2.1 as published by the
  Free Software Foundation and appearing in the file LICENSE.LGPL.txt included.

  This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

  Contact info@kdab.com if any conditions of this licensing are not
  clear to you.
*/

#ifndef KDSME_MODEL_ELEMENT_H
#define KDSME_MODEL_ELEMENT_H

#include "kdsme_core_export.h"

#include <QObject>
#include <QMetaType>

QT_BEGIN_NAMESPACE
class QPainterPath;
QT_END_NAMESPACE

namespace KDSME {

class State;
class StateMachine;

class KDSME_CORE_EXPORT Element : public QObject
{
    Q_OBJECT
    Q_ENUMS(Flags)
    Q_PROPERTY(KDSME::Element* parent READ parentElement WRITE setParentElement NOTIFY parentChanged FINAL)
    Q_PROPERTY(Type type READ type CONSTANT FINAL)
    Q_PROPERTY(Flags flags READ flags WRITE setFlags NOTIFY flagsChanged FINAL)
    Q_PROPERTY(QString label READ label WRITE setLabel NOTIFY labelChanged FINAL)
    Q_PROPERTY(QPointF pos READ pos WRITE setPos NOTIFY posChanged FINAL)
    Q_PROPERTY(qreal width READ width WRITE setWidth NOTIFY widthChanged FINAL)
    Q_PROPERTY(qreal height READ height WRITE setHeight NOTIFY heightChanged FINAL)
    Q_PROPERTY(bool visible READ isVisible WRITE setVisible NOTIFY visibleChanged FINAL)
    Q_PROPERTY(bool selected READ isSelected WRITE setSelected NOTIFY selectedChanged FINAL)

public:
    enum Type {
        ElementType,

        // Transition types
        TransitionType,
        SignalTransitionType,
        TimeoutTransitionType,

        // State types
        StateType,
        StateMachineType,
        HistoryStateType,
        FinalStateType,
        PseudoStateType
    };
    Q_ENUMS(Type)

    enum Flag {
        NoFlags = 0x0,
        ElementIsDragEnabled = 0x1,
        ElementIsSelectable = 0x2,
        ElementIsEditable = 0x4,
    };
    Q_DECLARE_FLAGS(Flags, Flag)

    explicit Element(QObject* parent = nullptr);
    ~Element();

    virtual Type type() const;

    Flags flags() const;
    void setFlags(Flags flags);

    QString label() const;
    void setLabel(const QString& label);

    quintptr internalId() const;
    void setInternalId(quintptr id);

    void setInternalPointer(void* ptr);
    void* internalPointer() const;

    QPointF pos() const;
    void setPos(const QPointF& pos);

    qreal height() const;
    void setHeight(qreal height);

    qreal width() const;
    void setWidth(qreal width);

    QPointF absolutePos() const;

    bool isVisible() const;
    void setVisible(bool visible);

    bool isSelected() const;
    void setSelected(bool selected);

    QSizeF preferredSize() const;
    virtual QRectF boundingRect() const;

    Element* parentElement() const;
    void setParentElement(Element* parent);
    void setParent(QObject* object); // hide parent function
    QList<Element*> childElements() const;

    virtual QString toDisplayString() const;

    Q_INVOKABLE static const char* typeToString(Type type);
    Q_INVOKABLE static Type stringToType(const char* type);

Q_SIGNALS:
    void parentChanged(Element* parent);
    void flagsChanged(Flags flags);
    void labelChanged(const QString& label);
    void posChanged(const QPointF& pos);
    void heightChanged(qreal height);
    void widthChanged(qreal width);
    void visibleChanged(bool visible);
    void selectedChanged(bool selected);

private:
    struct Private;
    QScopedPointer<Private> d;
};

}

Q_DECLARE_METATYPE(KDSME::Element::Type)
Q_DECLARE_METATYPE(KDSME::Element*)

#endif // TREESTRUCTURE_H