81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
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#ifndef ATTRIBUTETABLEMODEL_H
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#define ATTRIBUTETABLEMODEL_H
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/**
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* @brief 用来处理attribute数据的Model类
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*
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* 基本功能包括：
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* 1、可以自定义显示数据表中的哪些列
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* 2、可以分页显示并自定义每页展示数量
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* 3、编辑的数据可以突出展示（如加粗、改色）
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* 4、最前方加入一个用于展示行号的列（行号从1开始）
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* 5、点击行号列可以实现选中标识（通过icon）
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* 6、哪一行被编辑，改行的行号指示可以加*进行标识
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*
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*/
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#include <QAbstractTableModel>
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#include <QSqlRecord>
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class AttributeTableModel : public QAbstractTableModel
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{
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Q_OBJECT
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public:
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enum EditState
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{
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Clean = 0,
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Modified,
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New,
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Deleted
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};
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explicit AttributeTableModel(QObject* parent = nullptr
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, const QString& connection = ""
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, const QString& modelID = ""
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, const QString& groupID = ""
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, const QString& tableName = "basic.attribute");
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~AttributeTableModel();
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QVariant data(const QModelIndex& index, int role) const override;
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QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
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bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;
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int rowCount(const QModelIndex& parent = QModelIndex()) const override;
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int columnCount(const QModelIndex& parent = QModelIndex()) const override;
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Qt::ItemFlags flags(const QModelIndex &index) const override;
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//分页控制
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void setPageSize(int);
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int pageSize() const;
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void setCurrentPage(int);
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int currentPage() const;
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int totalPages() const;
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//展示列控制
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void setVisibleColumns(const QStringList& columns);
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private:
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struct RowData
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{
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QSqlRecord record;
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EditState state = Clean;
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};
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void loadPageData(); // 加载当前页数据
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void updateTotalCount(); // 更新总记录数
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QString m_connection;
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QString m_modelID;
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QString m_groupID;
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QString m_tableName;
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int m_pageSize;
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int m_currentPage;
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int m_totalCount;
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QStringList m_visibleColumns;
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QList<RowData> m_currentPageData;
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QHash<int, RowData> m_modifiedRows; //key:global row number
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};
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#endif //ATTRIBUTETABLEMODEL_H
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