#ifndef CMINDVIEW_H
#define CMINDVIEW_H

#include <QGraphicsView>
#include <list>

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

class CNodeItem;

class CMindView : public QGraphicsView
{

    Q_OBJECT

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 updateNode(CNodeData n);  // 更新

    void clear();  // 清空

    void refreshItems();

    void collectItems(CNodeItem *node);

    void setALignNodes(bool align);

    CNodeItem *root() const;

    void refreshNodeGeometry(CNodeItem *node, QPointF topLeft = QPointF());

    void mousePressEvent(QMouseEvent *event) override;

    void mouseMoveEvent(QMouseEvent *event) override;

    void mouseReleaseEvent(QMouseEvent *event) override;

    bool isCloseToEdge();

    void moveToCenter();

    void testData();

    void updateCursor(QPoint pos);

    void setAllowEdit(bool allow);

    bool allowEdit() const;

public slots:

    void slotEditNode(CNodeData n);

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

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

    void slotTextChanged();  // 编辑节点

    void slotWillBeginEditing();

signals:
    void sigEditNode(CNodeData n);

    void sigAddSubNode(int pNumber);

    void sigNodeChanged(CNodeData n);

private:
    CMind *m_mind = nullptr;

    CNodeItem *m_root = nullptr;

    QGraphicsItemGroup *m_group = nullptr;

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

    bool m_align        = true;
    bool m_isMovingItem = false;

    bool m_allowEdit = true;
};

#endif  // CMINDVIEW_H