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39 
40 #ifndef QITEMSELECTIONMODEL_P_H
41 #define QITEMSELECTIONMODEL_P_H
42 
43 //
44 //  W A R N I N G
45 //  -------------
46 //
47 // This file is not part of the Qt API.  It exists purely as an
48 // implementation detail.  This header file may change from version to
49 // version without notice, or even be removed.
50 //
51 // We mean it.
52 //
53 
54 #include "private/qobject_p.h"
55 
56 QT_REQUIRE_CONFIG(itemmodel);
57 
58 QT_BEGIN_NAMESPACE
59 
60 class QItemSelectionModelPrivate: public QObjectPrivate
61 {
Q_DECLARE_PUBLIC(QItemSelectionModel)62     Q_DECLARE_PUBLIC(QItemSelectionModel)
63 public:
64     QItemSelectionModelPrivate()
65       : model(nullptr),
66         currentCommand(QItemSelectionModel::NoUpdate),
67         tableSelected(false), tableColCount(0), tableRowCount(0) {}
68 
69     QItemSelection expandSelection(const QItemSelection &selection,
70                                    QItemSelectionModel::SelectionFlags command) const;
71 
72     void initModel(QAbstractItemModel *model);
73 
74     void _q_rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
75     void _q_columnsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
76     void _q_rowsAboutToBeInserted(const QModelIndex &parent, int start, int end);
77     void _q_columnsAboutToBeInserted(const QModelIndex &parent, int start, int end);
78     void _q_layoutAboutToBeChanged(const QList<QPersistentModelIndex> &parents = QList<QPersistentModelIndex>(), QAbstractItemModel::LayoutChangeHint hint = QAbstractItemModel::NoLayoutChangeHint);
79     void _q_layoutChanged(const QList<QPersistentModelIndex> &parents = QList<QPersistentModelIndex>(), QAbstractItemModel::LayoutChangeHint hint = QAbstractItemModel::NoLayoutChangeHint);
80 
remove(QList<QItemSelectionRange> & r)81     inline void remove(QList<QItemSelectionRange> &r)
82     {
83         QList<QItemSelectionRange>::const_iterator it = r.constBegin();
84         for (; it != r.constEnd(); ++it)
85             ranges.removeAll(*it);
86     }
87 
finalize()88     inline void finalize()
89     {
90         ranges.merge(currentSelection, currentCommand);
91         if (!currentSelection.isEmpty())  // ### perhaps this should be in QList
92             currentSelection.clear();
93     }
94 
95     QPointer<QAbstractItemModel> model;
96     QItemSelection ranges;
97     QItemSelection currentSelection;
98     QPersistentModelIndex currentIndex;
99     QItemSelectionModel::SelectionFlags currentCommand;
100     QVector<QPersistentModelIndex> savedPersistentIndexes;
101     QVector<QPersistentModelIndex> savedPersistentCurrentIndexes;
102     QVector<QPair<QPersistentModelIndex, uint> > savedPersistentRowLengths;
103     QVector<QPair<QPersistentModelIndex, uint> > savedPersistentCurrentRowLengths;
104     // optimization when all indexes are selected
105     bool tableSelected;
106     QPersistentModelIndex tableParent;
107     int tableColCount, tableRowCount;
108 };
109 
110 QT_END_NAMESPACE
111 
112 #endif // QITEMSELECTIONMODEL_P_H
113