editor/item.h

#ifndef ITEM_H
#define ITEM_H

#include <QGraphicsObject>
#include <QColor>
#include <QList>
#include <QAction>

class Connection;

class Item : public QGraphicsObject
{
    Q_OBJECT
public:
    enum AnchorType { Left, Right };
    explicit Item(const QString &type, QGraphicsItem *parent = nullptr);

    QRectF boundingRect() const override;
    QPointF anchorPos(AnchorType type) const;
    void addConnection(Connection* conn);
    void removeConnection(Connection* conn);
    QList<Connection*> connections();
    QString itemType();
    virtual void MenuActions(QMenu *menu);  // 添加基本菜单项
    virtual void addMenuActions(QMenu *menu);  // 添加额外菜单项
    virtual void handleMenuAction(QAction *action); // 处理菜单动作

signals:
    void requestCopy(Item*);
    void requestDelete(Item*);

protected:
    QVariant itemChange(GraphicsItemChange change, const QVariant &value) override;
    void contextMenuEvent(QGraphicsSceneContextMenuEvent *event) override;
    QString type_;
    QList<Connection*> connections_;
};

#endif // ITEM_H