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addressbook.cpp Example File
tutorials/addressbook/part2/addressbook.cpp

 /****************************************************************************
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 ** Copyright (C) 2007-2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 **
 ** This file is part of the documentation of the Qt Toolkit.
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 ** Licensees holding a valid Qt License Agreement may use this file in
 ** accordance with the rights, responsibilities and obligations
 ** contained therein.  Please consult your licensing agreement or
 ** contact [email protected] if any conditions of this licensing
 ** agreement are not clear to you.
 **
 ** Further information about Qt licensing is available at:
 ** http://trolltech.com/products/appdev/licensing.
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 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 ****************************************************************************/

 #include <QtGui>
 #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();
     connect(addButton, SIGNAL(clicked()), this, SLOT(addContact()));
     connect(submitButton, SIGNAL(clicked()), this, SLOT(submitContact()));
     connect(cancelButton, SIGNAL(clicked()), this, SLOT(cancel()));
     QVBoxLayout *buttonLayout1 = new QVBoxLayout;
     buttonLayout1->addWidget(addButton, Qt::AlignTop);
     buttonLayout1->addWidget(submitButton);
     buttonLayout1->addWidget(cancelButton);
     buttonLayout1->addStretch();
     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);
     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);
     submitButton->show();
     cancelButton->show();
 }

 void AddressBook::submitContact()
 {
     QString name = nameLine->text();
     QString address = addressText->toPlainText();

     if (name == "" || address == "") {
         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));
         return;
     }
     if (contacts.isEmpty()) {
         nameLine->clear();
         addressText->clear();
     }

     nameLine->setReadOnly(true);
     addressText->setReadOnly(true);
     addButton->setEnabled(true);
     submitButton->hide();
     cancelButton->hide();
 }
 void AddressBook::cancel()
 {
     nameLine->setText(oldName);
     nameLine->setReadOnly(true);

     addressText->setText(oldAddress);
     addressText->setReadOnly(true);

     addButton->setEnabled(true);
     submitButton->hide();
     cancelButton->hide();
 }