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50
51#include <QtWidgets>
52#include "addressbook.h"
53
54AddressBook::AddressBook(QWidget *parent)
55 : QWidget(parent)
56{
57 QLabel *nameLabel = new QLabel(tr(s: "Name:"));
58 nameLine = new QLineEdit;
59//! [setting readonly 1]
60 nameLine->setReadOnly(true);
61//! [setting readonly 1]
62 QLabel *addressLabel = new QLabel(tr(s: "Address:"));
63 addressText = new QTextEdit;
64//! [setting readonly 2]
65 addressText->setReadOnly(true);
66//! [setting readonly 2]
67
68//! [pushbutton declaration]
69 addButton = new QPushButton(tr(s: "&Add"));
70 addButton->show();
71 submitButton = new QPushButton(tr(s: "&Submit"));
72 submitButton->hide();
73 cancelButton = new QPushButton(tr(s: "&Cancel"));
74 cancelButton->hide();
75//! [pushbutton declaration]
76//! [connecting signals and slots]
77 connect(sender: addButton, signal: &QPushButton::clicked,
78 receiver: this, slot: &AddressBook::addContact);
79 connect(sender: submitButton, signal: &QPushButton::clicked,
80 receiver: this, slot: &AddressBook::submitContact);
81 connect(sender: cancelButton, signal: &QPushButton::clicked,
82 receiver: this, slot: &AddressBook::cancel);
83//! [connecting signals and slots]
84//! [vertical layout]
85 QVBoxLayout *buttonLayout1 = new QVBoxLayout;
86 buttonLayout1->addWidget(addButton, stretch: Qt::AlignTop);
87 buttonLayout1->addWidget(submitButton);
88 buttonLayout1->addWidget(cancelButton);
89 buttonLayout1->addStretch();
90//! [vertical layout]
91//! [grid layout]
92 QGridLayout *mainLayout = new QGridLayout;
93 mainLayout->addWidget(nameLabel, row: 0, column: 0);
94 mainLayout->addWidget(nameLine, row: 0, column: 1);
95 mainLayout->addWidget(addressLabel, row: 1, column: 0, Qt::AlignTop);
96 mainLayout->addWidget(addressText, row: 1, column: 1);
97 mainLayout->addLayout(buttonLayout1, row: 1, column: 2);
98//! [grid layout]
99 setLayout(mainLayout);
100 setWindowTitle(tr(s: "Simple Address Book"));
101}
102//! [addContact]
103void AddressBook::addContact()
104{
105 oldName = nameLine->text();
106 oldAddress = addressText->toPlainText();
107
108 nameLine->clear();
109 addressText->clear();
110
111 nameLine->setReadOnly(false);
112 nameLine->setFocus(Qt::OtherFocusReason);
113 addressText->setReadOnly(false);
114
115 addButton->setEnabled(false);
116 submitButton->show();
117 cancelButton->show();
118}
119//! [addContact]
120
121//! [submitContact part1]
122void AddressBook::submitContact()
123{
124 QString name = nameLine->text();
125 QString address = addressText->toPlainText();
126
127 if (name.isEmpty() || address.isEmpty()) {
128 QMessageBox::information(parent: this, title: tr(s: "Empty Field"),
129 text: tr(s: "Please enter a name and address."));
130 return;
131 }
132//! [submitContact part1]
133//! [submitContact part2]
134 if (!contacts.contains(akey: name)) {
135 contacts.insert(akey: name, avalue: address);
136 QMessageBox::information(parent: this, title: tr(s: "Add Successful"),
137 text: tr(s: "\"%1\" has been added to your address book.").arg(a: name));
138 } else {
139 QMessageBox::information(parent: this, title: tr(s: "Add Unsuccessful"),
140 text: tr(s: "Sorry, \"%1\" is already in your address book.").arg(a: name));
141 return;
142 }
143//! [submitContact part2]
144//! [submitContact part3]
145 if (contacts.isEmpty()) {
146 nameLine->clear();
147 addressText->clear();
148 }
149
150 nameLine->setReadOnly(true);
151 addressText->setReadOnly(true);
152 addButton->setEnabled(true);
153 submitButton->hide();
154 cancelButton->hide();
155}
156//! [submitContact part3]
157//! [cancel]
158void AddressBook::cancel()
159{
160 nameLine->setText(oldName);
161 nameLine->setReadOnly(true);
162
163 addressText->setText(oldAddress);
164 addressText->setReadOnly(true);
165
166 addButton->setEnabled(true);
167 submitButton->hide();
168 cancelButton->hide();
169}
170//! [cancel]
171

source code of qtbase/examples/widgets/tutorials/addressbook/part2/addressbook.cpp