#ifndef CMINDVIEW_H
#define CMINDVIEW_H

#include <QGraphicsView>
#include <list>

#include "CNode.h"
#include "CMind.h"

class CNodeItem;

class CMindView : public QGraphicsView
{
    enum Alignment
    {
        NoAlignment,
        AlignLeft,
        AlignRight,
    };

public:
    explicit CMindView(QWidget *parent = nullptr);

    CMind *mind() const;
    void setNodeList(QList<CNodeData> list);

    void addNode(CNodeData n);  // 添加一个节点

    void createSubNode(int pNumber);  // 指定父节点, 创建子节点

    void removeNode(int number);  // 移除节点

    void clear();  // 清空

    void refreshItems();

    void collectItems(CNodeItem *node);

    qreal hNodeSpace() const;
    void setHNodeSpace(qreal h);

    qreal vNodeSpace() const;
    void setVNodeSpace(qreal v);

    void setALignment(Alignment align);

    CNodeItem *root() const;

private:
    CMind *m_mind = nullptr;

    CNodeItem *m_root = nullptr;

    // 场景中显示的项目
    QList<QGraphicsItem *> m_items;

    qreal m_hNodeSpace = 50;
    qreal m_vNodeSpace = 20;

    Alignment m_align = NoAlignment;
};

#endif  // CMINDVIEW_H