#ifndef HMIDOCUMENT_H
#define HMIDOCUMENT_H

#include "basedocument.h"
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QJsonObject>

// 前向声明
class ResizableRectangle;
class ResizableEllipse;
class NamedItem;

class HMIDocument : public BaseDocument
{
    Q_OBJECT
public:
    explicit HMIDocument(QWidget *parent = nullptr);
    ~HMIDocument() override;

    QString title() const override;
    void setTitle(const QString &title);
    QGraphicsView *view() const;
    QGraphicsScene *scene() const;

    // 绘图控制
    void setDrawEllipse(bool enable);
    void setDrawRectangle(bool enable);

    // 编辑功能
    void copySelectedItems();
    void pasteItems();
    void deleteSelectedItems();
    void showItemProperties();
    void startDrawingEllipse();
    void startDrawingRectangle();

    // 保存/加载
    bool saveToFile(const QString &filePath) override;
    bool loadFromFile(const QString &filePath) override;

    void markModified();

signals:
    void titleChanged(const QString &title);

protected:
    bool eventFilter(QObject *obj, QEvent *event) override;

private:
    // 辅助方法
    void createShape(const QString& type, const QPointF &pos);
    void resetDrawFlags();
    void showContextMenu(QPoint globalPos);

    // 序列化相关
    QByteArray serializeItem(QGraphicsItem *item);
    QGraphicsItem *deserializeItem(const QByteArray &data);
    QJsonObject itemToJson(QGraphicsItem *item);
    QGraphicsItem *jsonToItem(const QJsonObject &json);

    // 成员变量
    QString m_title;
    QGraphicsScene *m_scene;
    QGraphicsView *m_view;
    bool m_canDrawEllipse;
    bool m_canDrawRectangle;

    // 复制粘贴缓冲区
    QList<QByteArray> m_copiedItemsData;
    QPointF m_lastPastePos;
};

#endif // HMIDOCUMENT_H