1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#include "addressbook.h"
AddressBook::AddressBook(QWidget *parent)
: QWidget(parent)
{
QLabel *nameLabel = new QLabel(tr("Name:"));
nameLine = new QLineEdit;
//! [setting readonly 1]
nameLine->setReadOnly(true);
//! [setting readonly 1]
QLabel *addressLabel = new QLabel(tr("Address:"));
addressText = new QTextEdit;
//! [setting readonly 2]
addressText->setReadOnly(true);
//! [setting readonly 2]
//! [pushbutton declaration]
addButton = new QPushButton(tr("&Add"));
addButton->show();
submitButton = new QPushButton(tr("&Submit"));
submitButton->hide();
cancelButton = new QPushButton(tr("&Cancel"));
cancelButton->hide();
//! [pushbutton declaration]
//! [connecting signals and slots]
connect(addButton, &QPushButton::clicked,
this, &AddressBook::addContact);
connect(submitButton, &QPushButton::clicked,
this, &AddressBook::submitContact);
connect(cancelButton, &QPushButton::clicked,
this, &AddressBook::cancel);
//! [connecting signals and slots]
//! [vertical layout]
QVBoxLayout *buttonLayout1 = new QVBoxLayout;
buttonLayout1->addWidget(addButton, Qt::AlignTop);
buttonLayout1->addWidget(submitButton);
buttonLayout1->addWidget(cancelButton);
buttonLayout1->addStretch();
//! [vertical layout]
//! [grid layout]
QGridLayout *mainLayout = new QGridLayout;
mainLayout->addWidget(nameLabel, 0, 0);
mainLayout->addWidget(nameLine, 0, 1);
mainLayout->addWidget(addressLabel, 1, 0, Qt::AlignTop);
mainLayout->addWidget(addressText, 1, 1);
mainLayout->addLayout(buttonLayout1, 1, 2);
//! [grid layout]
setLayout(mainLayout);
setWindowTitle(tr("Simple Address Book"));
}
//! [addContact]
void AddressBook::addContact()
{
oldName = nameLine->text();
oldAddress = addressText->toPlainText();
nameLine->clear();
addressText->clear();
nameLine->setReadOnly(false);
nameLine->setFocus(Qt::OtherFocusReason);
addressText->setReadOnly(false);
addButton->setEnabled(false);
submitButton->show();
cancelButton->show();
}
//! [addContact]
//! [submitContact part1]
void AddressBook::submitContact()
{
QString name = nameLine->text();
QString address = addressText->toPlainText();
if (name.isEmpty() || address.isEmpty()) {
QMessageBox::information(this, tr("Empty Field"),
tr("Please enter a name and address."));
return;
}
//! [submitContact part1]
//! [submitContact part2]
if (!contacts.contains(name)) {
contacts.insert(name, address);
QMessageBox::information(this, tr("Add Successful"),
tr("\"%1\" has been added to your address book.").arg(name));
} else {
QMessageBox::information(this, tr("Add Unsuccessful"),
tr("Sorry, \"%1\" is already in your address book.").arg(name));
return;
}
//! [submitContact part2]
//! [submitContact part3]
if (contacts.isEmpty()) {
nameLine->clear();
addressText->clear();
}
nameLine->setReadOnly(true);
addressText->setReadOnly(true);
addButton->setEnabled(true);
submitButton->hide();
cancelButton->hide();
}
//! [submitContact part3]
//! [cancel]
void AddressBook::cancel()
{
nameLine->setText(oldName);
nameLine->setReadOnly(true);
addressText->setText(oldAddress);
addressText->setReadOnly(true);
addButton->setEnabled(true);
submitButton->hide();
cancelButton->hide();
}
//! [cancel]
|