qt5base-lts/examples/widgets/tutorials/addressbook/part3/addressbook.cpp
Lucie Gérard 05fc3aef53 Use SPDX license identifiers
Replace the current license disclaimer in files by
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Task-number: QTBUG-67283
Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
2022-05-16 16:37:38 +02:00

183 lines
5.1 KiB
C++

// 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;
nameLine->setReadOnly(true);
QLabel *addressLabel = new QLabel(tr("Address:"));
addressText = new QTextEdit;
addressText->setReadOnly(true);
addButton = new QPushButton(tr("&Add"));
addButton->show();
submitButton = new QPushButton(tr("&Submit"));
submitButton->hide();
cancelButton = new QPushButton(tr("&Cancel"));
cancelButton->hide();
//! [navigation pushbuttons]
nextButton = new QPushButton(tr("&Next"));
nextButton->setEnabled(false);
previousButton = new QPushButton(tr("&Previous"));
previousButton->setEnabled(false);
//! [navigation pushbuttons]
connect(addButton, &QPushButton::clicked,
this, &AddressBook::addContact);
connect(submitButton, &QPushButton::clicked,
this, &AddressBook::submitContact);
connect(cancelButton, &QPushButton::clicked,
this, &AddressBook::cancel);
//! [connecting navigation signals]
connect(nextButton, &QPushButton::clicked,
this, &AddressBook::next);
connect(previousButton, &QPushButton::clicked,
this, &AddressBook::previous);
//! [connecting navigation signals]
QVBoxLayout *buttonLayout1 = new QVBoxLayout;
buttonLayout1->addWidget(addButton, Qt::AlignTop);
buttonLayout1->addWidget(submitButton);
buttonLayout1->addWidget(cancelButton);
buttonLayout1->addStretch();
//! [navigation layout]
QHBoxLayout *buttonLayout2 = new QHBoxLayout;
buttonLayout2->addWidget(previousButton);
buttonLayout2->addWidget(nextButton);
//! [ navigation 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);
//! [adding navigation layout]
mainLayout->addLayout(buttonLayout2, 2, 1);
//! [adding navigation layout]
setLayout(mainLayout);
setWindowTitle(tr("Simple Address Book"));
}
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);
//! [disabling navigation]
nextButton->setEnabled(false);
previousButton->setEnabled(false);
//! [disabling navigation]
submitButton->show();
cancelButton->show();
}
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;
}
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));
}
if (contacts.isEmpty()) {
nameLine->clear();
addressText->clear();
}
nameLine->setReadOnly(true);
addressText->setReadOnly(true);
addButton->setEnabled(true);
//! [enabling navigation]
int number = contacts.size();
nextButton->setEnabled(number > 1);
previousButton->setEnabled(number > 1);
//! [enabling navigation]
submitButton->hide();
cancelButton->hide();
}
void AddressBook::cancel()
{
nameLine->setText(oldName);
addressText->setText(oldAddress);
if (contacts.isEmpty()) {
nameLine->clear();
addressText->clear();
}
nameLine->setReadOnly(true);
addressText->setReadOnly(true);
addButton->setEnabled(true);
int number = contacts.size();
nextButton->setEnabled(number > 1);
previousButton->setEnabled(number > 1);
submitButton->hide();
cancelButton->hide();
}
//! [next() function]
void AddressBook::next()
{
QString name = nameLine->text();
QMap<QString, QString>::iterator i = contacts.find(name);
if (i != contacts.end())
i++;
if (i == contacts.end())
i = contacts.begin();
nameLine->setText(i.key());
addressText->setText(i.value());
}
//! [next() function]
//! [previous() function]
void AddressBook::previous()
{
QString name = nameLine->text();
QMap<QString, QString>::iterator i = contacts.find(name);
if (i == contacts.end()){
nameLine->clear();
addressText->clear();
return;
}
if (i == contacts.begin())
i = contacts.end();
i--;
nameLine->setText(i.key());
addressText->setText(i.value());
}
//! [previous() function]