1/****************************************************************************
2**
3** Copyright (C) 2020 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the examples of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:BSD$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** BSD License Usage
18** Alternatively, you may use this file under the terms of the BSD license
19** as follows:
20**
21** "Redistribution and use in source and binary forms, with or without
22** modification, are permitted provided that the following conditions are
23** met:
24** * Redistributions of source code must retain the above copyright
25** notice, this list of conditions and the following disclaimer.
26** * Redistributions in binary form must reproduce the above copyright
27** notice, this list of conditions and the following disclaimer in
28** the documentation and/or other materials provided with the
29** distribution.
30** * Neither the name of The Qt Company Ltd nor the names of its
31** contributors may be used to endorse or promote products derived
32** from this software without specific prior written permission.
33**
34**
35** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
46**
47** $QT_END_LICENSE$
48**
49****************************************************************************/
50
51#include "mysortfilterproxymodel.h"
52
53#include <QtWidgets>
54
55//! [0]
56MySortFilterProxyModel::MySortFilterProxyModel(QObject *parent)
57 : QSortFilterProxyModel(parent)
58{
59}
60//! [0]
61
62//! [1]
63void MySortFilterProxyModel::setFilterMinimumDate(QDate date)
64{
65 minDate = date;
66 invalidateFilter();
67}
68//! [1]
69
70//! [2]
71void MySortFilterProxyModel::setFilterMaximumDate(QDate date)
72{
73 maxDate = date;
74 invalidateFilter();
75}
76//! [2]
77
78//! [3]
79bool MySortFilterProxyModel::filterAcceptsRow(int sourceRow,
80 const QModelIndex &sourceParent) const
81{
82 QModelIndex index0 = sourceModel()->index(row: sourceRow, column: 0, parent: sourceParent);
83 QModelIndex index1 = sourceModel()->index(row: sourceRow, column: 1, parent: sourceParent);
84 QModelIndex index2 = sourceModel()->index(row: sourceRow, column: 2, parent: sourceParent);
85
86 return (sourceModel()->data(index: index0).toString().contains(rx: filterRegExp())
87 || sourceModel()->data(index: index1).toString().contains(rx: filterRegExp()))
88 && dateInRange(date: sourceModel()->data(index: index2).toDate());
89}
90//! [3]
91
92//! [4] //! [5]
93bool MySortFilterProxyModel::lessThan(const QModelIndex &left,
94 const QModelIndex &right) const
95{
96 QVariant leftData = sourceModel()->data(index: left);
97 QVariant rightData = sourceModel()->data(index: right);
98//! [4]
99
100//! [6]
101 if (leftData.userType() == QMetaType::QDateTime) {
102 return leftData.toDateTime() < rightData.toDateTime();
103 } else {
104 static const QRegularExpression emailPattern("[\\w\\.]*@[\\w\\.]*");
105
106 QString leftString = leftData.toString();
107 if (left.column() == 1) {
108 const QRegularExpressionMatch match = emailPattern.match(subject: leftString);
109 if (match.hasMatch())
110 leftString = match.captured(nth: 0);
111 }
112 QString rightString = rightData.toString();
113 if (right.column() == 1) {
114 const QRegularExpressionMatch match = emailPattern.match(subject: rightString);
115 if (match.hasMatch())
116 rightString = match.captured(nth: 0);
117 }
118
119 return QString::localeAwareCompare(s1: leftString, s2: rightString) < 0;
120 }
121}
122//! [5] //! [6]
123
124//! [7]
125bool MySortFilterProxyModel::dateInRange(QDate date) const
126{
127 return (!minDate.isValid() || date > minDate)
128 && (!maxDate.isValid() || date < maxDate);
129}
130//! [7]
131

source code of qtbase/examples/widgets/itemviews/customsortfiltermodel/mysortfilterproxymodel.cpp