1 | // Copyright (C) 2016 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #ifndef QITEMSELECTIONMODEL_P_H |
5 | #define QITEMSELECTIONMODEL_P_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include "qitemselectionmodel.h" |
19 | #include "private/qobject_p.h" |
20 | #include "private/qproperty_p.h" |
21 | #include <array> |
22 | |
23 | QT_REQUIRE_CONFIG(itemmodel); |
24 | |
25 | QT_BEGIN_NAMESPACE |
26 | |
27 | class QItemSelectionModelPrivate: public QObjectPrivate |
28 | { |
29 | Q_DECLARE_PUBLIC(QItemSelectionModel) |
30 | public: |
31 | QItemSelectionModelPrivate() |
32 | : currentCommand(QItemSelectionModel::NoUpdate), |
33 | tableSelected(false), tableColCount(0), tableRowCount(0) {} |
34 | ~QItemSelectionModelPrivate() override; |
35 | |
36 | QItemSelection expandSelection(const QItemSelection &selection, |
37 | QItemSelectionModel::SelectionFlags command) const; |
38 | |
39 | void initModel(QAbstractItemModel *model); |
40 | |
41 | void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end); |
42 | void columnsAboutToBeRemoved(const QModelIndex &parent, int start, int end); |
43 | void rowsAboutToBeInserted(const QModelIndex &parent, int start, int end); |
44 | void columnsAboutToBeInserted(const QModelIndex &parent, int start, int end); |
45 | void layoutAboutToBeChanged(const QList<QPersistentModelIndex> &parents, QAbstractItemModel::LayoutChangeHint hint); |
46 | void triggerLayoutToBeChanged() |
47 | { |
48 | layoutAboutToBeChanged(parents: QList<QPersistentModelIndex>(), hint: QAbstractItemModel::NoLayoutChangeHint); |
49 | } |
50 | |
51 | void layoutChanged(const QList<QPersistentModelIndex> &parents, QAbstractItemModel::LayoutChangeHint hint); |
52 | void triggerLayoutChanged() |
53 | { |
54 | layoutChanged(parents: QList<QPersistentModelIndex>(), hint: QAbstractItemModel::NoLayoutChangeHint); |
55 | } |
56 | |
57 | void modelDestroyed(); |
58 | |
59 | inline void remove(QList<QItemSelectionRange> &r) |
60 | { |
61 | QList<QItemSelectionRange>::const_iterator it = r.constBegin(); |
62 | for (; it != r.constEnd(); ++it) |
63 | ranges.removeAll(t: *it); |
64 | } |
65 | |
66 | inline void finalize() |
67 | { |
68 | ranges.merge(other: currentSelection, command: currentCommand); |
69 | if (!currentSelection.isEmpty()) // ### perhaps this should be in QList |
70 | currentSelection.clear(); |
71 | } |
72 | |
73 | void setModel(QAbstractItemModel *mod) { q_func()->setModel(mod); } |
74 | void disconnectModel(); |
75 | void modelChanged(QAbstractItemModel *mod) { Q_EMIT q_func()->modelChanged(model: mod); } |
76 | Q_OBJECT_COMPAT_PROPERTY_WITH_ARGS(QItemSelectionModelPrivate, QAbstractItemModel *, model, |
77 | &QItemSelectionModelPrivate::setModel, |
78 | &QItemSelectionModelPrivate::modelChanged, nullptr) |
79 | |
80 | QItemSelection ranges; |
81 | QItemSelection currentSelection; |
82 | QPersistentModelIndex currentIndex; |
83 | QItemSelectionModel::SelectionFlags currentCommand; |
84 | QList<QPersistentModelIndex> savedPersistentIndexes; |
85 | QList<QPersistentModelIndex> savedPersistentCurrentIndexes; |
86 | QList<std::pair<QPersistentModelIndex, uint>> savedPersistentRowLengths; |
87 | QList<std::pair<QPersistentModelIndex, uint>> savedPersistentCurrentRowLengths; |
88 | // optimization when all indexes are selected |
89 | bool tableSelected; |
90 | QPersistentModelIndex tableParent; |
91 | int tableColCount, tableRowCount; |
92 | std::array<QMetaObject::Connection, 12> connections; |
93 | }; |
94 | |
95 | QT_END_NAMESPACE |
96 | |
97 | #endif // QITEMSELECTIONMODEL_P_H |
98 | |