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50
51#include <QtWidgets>
52#include "window.h"
53
54//! [Set up widgets]
55Window::Window(QWidget *parent)
56 : QWidget(parent)
57{
58 setupModel();
59
60 nameLabel = new QLabel(tr(s: "Na&me:"));
61 nameEdit = new QLineEdit();
62 addressLabel = new QLabel(tr(s: "&Address:"));
63 addressEdit = new QTextEdit();
64 typeLabel = new QLabel(tr(s: "&Type:"));
65 typeComboBox = new QComboBox();
66 nextButton = new QPushButton(tr(s: "&Next"));
67 previousButton = new QPushButton(tr(s: "&Previous"));
68
69 nameLabel->setBuddy(nameEdit);
70 addressLabel->setBuddy(addressEdit);
71 typeLabel->setBuddy(typeComboBox);
72
73 typeComboBox->setModel(typeModel);
74//! [Set up widgets]
75
76//! [Set up the mapper]
77 mapper = new QDataWidgetMapper(this);
78 mapper->setModel(model);
79 mapper->addMapping(widget: nameEdit, section: 0);
80 mapper->addMapping(widget: addressEdit, section: 1);
81 mapper->addMapping(widget: typeComboBox, section: 2, propertyName: "currentIndex");
82//! [Set up the mapper]
83
84//! [Set up connections and layouts]
85 connect(sender: previousButton, signal: &QAbstractButton::clicked,
86 receiver: mapper, slot: &QDataWidgetMapper::toPrevious);
87 connect(sender: nextButton, signal: &QAbstractButton::clicked,
88 receiver: mapper, slot: &QDataWidgetMapper::toNext);
89 connect(sender: mapper, signal: &QDataWidgetMapper::currentIndexChanged,
90 receiver: this, slot: &Window::updateButtons);
91
92 QGridLayout *layout = new QGridLayout();
93 layout->addWidget(nameLabel, row: 0, column: 0, rowSpan: 1, columnSpan: 1);
94 layout->addWidget(nameEdit, row: 0, column: 1, rowSpan: 1, columnSpan: 1);
95 layout->addWidget(previousButton, row: 0, column: 2, rowSpan: 1, columnSpan: 1);
96 layout->addWidget(addressLabel, row: 1, column: 0, rowSpan: 1, columnSpan: 1);
97 layout->addWidget(addressEdit, row: 1, column: 1, rowSpan: 2, columnSpan: 1);
98 layout->addWidget(nextButton, row: 1, column: 2, rowSpan: 1, columnSpan: 1);
99 layout->addWidget(typeLabel, row: 3, column: 0, rowSpan: 1, columnSpan: 1);
100 layout->addWidget(typeComboBox, row: 3, column: 1, rowSpan: 1, columnSpan: 1);
101 setLayout(layout);
102
103 setWindowTitle(tr(s: "Delegate Widget Mapper"));
104 mapper->toFirst();
105}
106//! [Set up connections and layouts]
107
108//! [Set up the model]
109void Window::setupModel()
110{
111 QStringList items;
112 items << tr(s: "Home") << tr(s: "Work") << tr(s: "Other");
113 typeModel = new QStringListModel(items, this);
114
115 model = new QStandardItemModel(5, 3, this);
116 QStringList names;
117 names << "Alice" << "Bob" << "Carol" << "Donald" << "Emma";
118 QStringList addresses;
119 addresses << "<qt>123 Main Street<br/>Market Town</qt>"
120 << "<qt>PO Box 32<br/>Mail Handling Service"
121 "<br/>Service City</qt>"
122 << "<qt>The Lighthouse<br/>Remote Island</qt>"
123 << "<qt>47338 Park Avenue<br/>Big City</qt>"
124 << "<qt>Research Station<br/>Base Camp<br/>Big Mountain</qt>";
125
126 QStringList types;
127 types << "0" << "1" << "2" << "0" << "2";
128
129 for (int row = 0; row < 5; ++row) {
130 QStandardItem *item = new QStandardItem(names[row]);
131 model->setItem(row, column: 0, item);
132 item = new QStandardItem(addresses[row]);
133 model->setItem(row, column: 1, item);
134 item = new QStandardItem(types[row]);
135 model->setItem(row, column: 2, item);
136 }
137}
138//! [Set up the model]
139
140//! [Slot for updating the buttons]
141void Window::updateButtons(int row)
142{
143 previousButton->setEnabled(row > 0);
144 nextButton->setEnabled(row < model->rowCount() - 1);
145}
146//! [Slot for updating the buttons]
147

source code of qtbase/examples/widgets/itemviews/combowidgetmapper/window.cpp