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Diffstat (limited to 'examples/widgets/tutorials/addressbook/part3/addressbook.cpp')
| -rw-r--r-- | examples/widgets/tutorials/addressbook/part3/addressbook.cpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/examples/widgets/tutorials/addressbook/part3/addressbook.cpp b/examples/widgets/tutorials/addressbook/part3/addressbook.cpp new file mode 100644 index 0000000000..9a4c845dee --- /dev/null +++ b/examples/widgets/tutorials/addressbook/part3/addressbook.cpp @@ -0,0 +1,215 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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, SIGNAL(clicked()), this, SLOT(addContact())); + connect(submitButton, SIGNAL(clicked()), this, SLOT(submitContact())); + connect(cancelButton, SIGNAL(clicked()), this, SLOT(cancel())); +//! [connecting navigation signals] + connect(nextButton, SIGNAL(clicked()), this, SLOT(next())); + connect(previousButton, SIGNAL(clicked()), this, SLOT(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] |