ObjectHierarchyModel.h

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#pragma once
 
#include <gii/gen/InformationBase.h>
#include <QAbstractItemModel>
#include <QIcon>
 
namespace sf
{
 
class ObjectHierarchyModel :public QAbstractItemModel
{
  public:
    explicit ObjectHierarchyModel(bool multi, QObject* parent);
 
    ~ObjectHierarchyModel() override;
 
    [[nodiscard]] QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
 
    [[nodiscard]] int columnCount(const QModelIndex& parent) const override;
 
    [[nodiscard]] int rowCount(const QModelIndex& parent) const override;
 
    [[nodiscard]] QVariant data(const QModelIndex& index, int role) const override;
 
    [[nodiscard]] Qt::ItemFlags flags(const QModelIndex& index) const override;
 
    [[nodiscard]] QModelIndex index(int row, int column, const QModelIndex& parent) const override;
 
    [[nodiscard]] QModelIndex parent(const QModelIndex& child) const override;
 
    void toggleSelection(const QModelIndex& index);
 
    [[nodiscard]] QObject* getObject(QModelIndex index) const;
 
    void updateList(QObject* root);
 
    bool insertItemAt(const QModelIndex& parent, QObject* obj);
 
    void removeItem(const QModelIndex& index);
 
    bool isRoot(QModelIndex index) const;
 
    QModelIndex getObjectIndex(QObject* obj);
 
  private:
 
    struct TreeItem
    {
 
      explicit TreeItem(ObjectHierarchyModel* owner, TreeItem* parent, QObject* obj);
 
      ~TreeItem();
 
      int getRow();
 
      bool _selected{false};
 
      ObjectHierarchyModel* _owner{nullptr};
      QObject* _object{nullptr};
      TreeItem* _parentItem{nullptr};
      QList<TreeItem*> _childItems;
    };
 
    void addChild(QObject* obj, TreeItem* parent);
 
    bool _multi;
    TreeItem* _rootItem;
    QList<TreeItem*> _items;
    QList<TreeItem*> _selected;
 
    QIcon _iconForm;
    QIcon _iconContainer;
    QIcon _iconWidget;
 
};
 
}