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 QLISTWIDGET_P_H
5#define QLISTWIDGET_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 <QtCore/qabstractitemmodel.h>
19#include <QtWidgets/qabstractitemview.h>
20#include <QtWidgets/qlistwidget.h>
21#include <private/qlistview_p.h>
22#include <private/qwidgetitemdata_p.h>
23
24#include <array>
25
26QT_REQUIRE_CONFIG(listwidget);
27
28QT_BEGIN_NAMESPACE
29
30class QListModelLessThan
31{
32public:
33 inline bool operator()(QListWidgetItem *i1, QListWidgetItem *i2) const
34 { return *i1 < *i2; }
35};
36
37class QListModelGreaterThan
38{
39public:
40 inline bool operator()(QListWidgetItem *i1, QListWidgetItem *i2) const
41 { return *i2 < *i1; }
42};
43
44class Q_AUTOTEST_EXPORT QListModel : public QAbstractListModel
45{
46 Q_OBJECT
47 friend class QListWidget;
48
49public:
50 QListModel(QListWidget *parent);
51 ~QListModel();
52
53 void clear();
54 QListWidgetItem *at(int row) const;
55 void insert(int row, QListWidgetItem *item);
56 void insert(int row, const QStringList &items);
57 void remove(QListWidgetItem *item);
58 QListWidgetItem *take(int row);
59 void move(int srcRow, int dstRow);
60
61 int rowCount(const QModelIndex &parent = QModelIndex()) const override;
62
63 QModelIndex index(const QListWidgetItem *item) const;
64 QModelIndex index(int row, int column = 0, const QModelIndex &parent = QModelIndex()) const override;
65
66 QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
67 bool setData(const QModelIndex &index, const QVariant &value, int role) override;
68 bool clearItemData(const QModelIndex &index) override;
69
70 QMap<int, QVariant> itemData(const QModelIndex &index) const override;
71
72 bool insertRows(int row, int count = 1, const QModelIndex &parent = QModelIndex()) override;
73 bool removeRows(int row, int count = 1, const QModelIndex &parent = QModelIndex()) override;
74 bool moveRows(const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild) override;
75
76 Qt::ItemFlags flags(const QModelIndex &index) const override;
77
78 void sort(int column, Qt::SortOrder order) override;
79 void ensureSorted(int column, Qt::SortOrder order, int start, int end);
80 static bool itemLessThan(const std::pair<QListWidgetItem*,int> &left,
81 const std::pair<QListWidgetItem*,int> &right);
82 static bool itemGreaterThan(const std::pair<QListWidgetItem*,int> &left,
83 const std::pair<QListWidgetItem*,int> &right);
84 static QList<QListWidgetItem*>::iterator sortedInsertionIterator(
85 const QList<QListWidgetItem*>::iterator &begin,
86 const QList<QListWidgetItem*>::iterator &end,
87 Qt::SortOrder order, QListWidgetItem *item);
88
89 void itemChanged(QListWidgetItem *item, const QList<int> &roles = QList<int>());
90
91 // dnd
92 QStringList mimeTypes() const override;
93 QMimeData *mimeData(const QModelIndexList &indexes) const override;
94#if QT_CONFIG(draganddrop)
95 bool dropMimeData(const QMimeData *data, Qt::DropAction action,
96 int row, int column, const QModelIndex &parent) override;
97 Qt::DropActions supportedDropActions() const override;
98#endif
99
100 QMimeData *internalMimeData() const;
101private:
102 QList<QListWidgetItem*> items;
103
104 // A cache must be mutable if get-functions should have const modifiers
105 mutable QModelIndexList cachedIndexes;
106};
107
108
109
110class QListWidgetPrivate : public QListViewPrivate
111{
112 Q_DECLARE_PUBLIC(QListWidget)
113public:
114 QListWidgetPrivate() : QListViewPrivate(), sortOrder(Qt::AscendingOrder), sortingEnabled(false) {}
115 inline QListModel *listModel() const { return qobject_cast<QListModel*>(object: model); }
116 void setup();
117 void clearConnections();
118 void emitItemPressed(const QModelIndex &index);
119 void emitItemClicked(const QModelIndex &index);
120 void emitItemDoubleClicked(const QModelIndex &index);
121 void emitItemActivated(const QModelIndex &index);
122 void emitItemEntered(const QModelIndex &index);
123 void emitItemChanged(const QModelIndex &index);
124 void emitCurrentItemChanged(const QModelIndex &current, const QModelIndex &previous);
125 void sort();
126 void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
127 Qt::SortOrder sortOrder;
128 bool sortingEnabled;
129
130 std::array<QMetaObject::Connection, 8> connections;
131 std::array<QMetaObject::Connection, 2> selectionModelConnections;
132};
133
134class QListWidgetItemPrivate
135{
136public:
137 QListWidgetItemPrivate(QListWidgetItem *item) : q(item), theid(-1) {}
138 QListWidgetItem *q;
139 QList<QWidgetItemData> values;
140 int theid;
141};
142
143QT_END_NAMESPACE
144
145#endif // QLISTWIDGET_P_H
146

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