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 QTABLEWIDGET_P_H
5#define QTABLEWIDGET_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. This header file may change
12// from version to version without notice, or even be removed.
13//
14// We mean it.
15//
16
17#include <QtWidgets/private/qtwidgetsglobal_p.h>
18#include <qheaderview.h>
19#include <qtablewidget.h>
20#include <qabstractitemmodel.h>
21#include <private/qabstractitemmodel_p.h>
22#include <private/qtableview_p.h>
23#include <private/qwidgetitemdata_p.h>
24
25#include <array>
26
27QT_REQUIRE_CONFIG(tablewidget);
28
29QT_BEGIN_NAMESPACE
30
31class QTableWidgetMimeData : public QMimeData
32{
33 Q_OBJECT
34public:
35 QList<QTableWidgetItem*> items;
36};
37
38class QTableModelLessThan
39{
40public:
41 inline bool operator()(QTableWidgetItem *i1, QTableWidgetItem *i2) const
42 { return (*i1 < *i2); }
43};
44
45class QTableModelGreaterThan
46{
47public:
48 inline bool operator()(QTableWidgetItem *i1, QTableWidgetItem *i2) const
49 { return (*i2 < *i1); }
50};
51
52class QTableModel : public QAbstractTableModel
53{
54 Q_OBJECT
55 friend class QTableWidget;
56
57public:
58 QTableModel(int rows, int columns, QTableWidget *parent);
59 ~QTableModel();
60
61 bool insertRows(int row, int count = 1, const QModelIndex &parent = QModelIndex()) override;
62 bool insertColumns(int column, int count = 1, const QModelIndex &parent = QModelIndex()) override;
63
64 bool removeRows(int row, int count = 1, const QModelIndex &parent = QModelIndex()) override;
65 bool removeColumns(int column, int count = 1, const QModelIndex &parent = QModelIndex()) override;
66
67 bool moveRows(const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild) override;
68
69 void setItem(int row, int column, QTableWidgetItem *item);
70 QTableWidgetItem *takeItem(int row, int column);
71 QTableWidgetItem *item(int row, int column) const;
72 QTableWidgetItem *item(const QModelIndex &index) const;
73 void removeItem(QTableWidgetItem *item);
74
75 void setHorizontalHeaderItem(int section, QTableWidgetItem *item);
76 void setVerticalHeaderItem(int section, QTableWidgetItem *item);
77 QTableWidgetItem *takeHorizontalHeaderItem(int section);
78 QTableWidgetItem *takeVerticalHeaderItem(int section);
79 QTableWidgetItem *horizontalHeaderItem(int section);
80 QTableWidgetItem *verticalHeaderItem(int section);
81
82 QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override
83 { return QAbstractTableModel::index(row, column, parent); }
84
85 QModelIndex index(const QTableWidgetItem *item) const;
86
87 void setRowCount(int rows);
88 void setColumnCount(int columns);
89
90 int rowCount(const QModelIndex &parent = QModelIndex()) const override;
91 int columnCount(const QModelIndex &parent = QModelIndex()) const override;
92
93 QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
94 bool setData(const QModelIndex &index, const QVariant &value, int role) override;
95 bool setItemData(const QModelIndex &index, const QMap<int, QVariant> &roles) override;
96 bool clearItemData(const QModelIndex &index) override;
97
98 QMap<int, QVariant> itemData(const QModelIndex &index) const override;
99
100 QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
101 bool setHeaderData(int section, Qt::Orientation orientation, const QVariant &value, int role) override;
102
103 Qt::ItemFlags flags(const QModelIndex &index) const override;
104
105 void sort(int column, Qt::SortOrder order) override;
106 static bool itemLessThan(const std::pair<QTableWidgetItem*,int> &left,
107 const std::pair<QTableWidgetItem*,int> &right);
108 static bool itemGreaterThan(const std::pair<QTableWidgetItem*,int> &left,
109 const std::pair<QTableWidgetItem*,int> &right);
110
111 void ensureSorted(int column, Qt::SortOrder order, int start, int end);
112 QList<QTableWidgetItem *> columnItems(int column) const;
113 void updateRowIndexes(QModelIndexList &indexes, int movedFromRow, int movedToRow);
114 static QList<QTableWidgetItem *>::iterator
115 sortedInsertionIterator(const QList<QTableWidgetItem *>::iterator &begin,
116 const QList<QTableWidgetItem *>::iterator &end, Qt::SortOrder order,
117 QTableWidgetItem *item);
118
119 bool isValid(const QModelIndex &index) const;
120 inline long tableIndex(int row, int column) const
121 { return (row * horizontalHeaderItems.size()) + column; }
122
123 void clear();
124 void clearContents();
125 void itemChanged(QTableWidgetItem *item, const QList<int> &roles = QList<int>());
126
127 QTableWidgetItem *createItem() const;
128 const QTableWidgetItem *itemPrototype() const;
129 void setItemPrototype(const QTableWidgetItem *item);
130
131 // dnd
132 QStringList mimeTypes() const override;
133 QMimeData *mimeData(const QModelIndexList &indexes) const override;
134 bool dropMimeData(const QMimeData *data, Qt::DropAction action,
135 int row, int column, const QModelIndex &parent) override;
136 Qt::DropActions supportedDropActions() const override;
137
138 QMimeData *internalMimeData() const;
139
140private:
141 const QTableWidgetItem *prototype;
142 QList<QTableWidgetItem *> tableItems;
143 QList<QTableWidgetItem *> verticalHeaderItems;
144 QList<QTableWidgetItem *> horizontalHeaderItems;
145
146 // A cache must be mutable if get-functions should have const modifiers
147 mutable QModelIndexList cachedIndexes;
148};
149
150class QTableWidgetPrivate : public QTableViewPrivate
151{
152 Q_DECLARE_PUBLIC(QTableWidget)
153public:
154 QTableWidgetPrivate() : QTableViewPrivate() {}
155 inline QTableModel *tableModel() const { return qobject_cast<QTableModel*>(object: model); }
156 void setup();
157 void clearConnections();
158
159 // view signals
160 void emitItemPressed(const QModelIndex &index);
161 void emitItemClicked(const QModelIndex &index);
162 void emitItemDoubleClicked(const QModelIndex &index);
163 void emitItemActivated(const QModelIndex &index);
164 void emitItemEntered(const QModelIndex &index);
165 // model signals
166 void emitItemChanged(const QModelIndex &index);
167 // selection signals
168 void emitCurrentItemChanged(const QModelIndex &previous, const QModelIndex &current);
169 // sorting
170 void sort();
171 void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
172
173 std::array<QMetaObject::Connection, 10> connections;
174};
175
176class QTableWidgetItemPrivate
177{
178public:
179 QTableWidgetItemPrivate(QTableWidgetItem *item) : q(item), id(-1), headerItem(false) {}
180 QTableWidgetItem *q;
181 int id;
182 bool headerItem; // Qt 7 TODO: inline this stuff in the public class.
183};
184
185QT_END_NAMESPACE
186
187#endif // QTABLEWIDGET_P_H
188

source code of qtbase/src/widgets/itemviews/qtablewidget_p.h