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     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the examples of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include <QtGui>

    43 #include "addressbook.h"

    44 

    45 AddressBook::AddressBook(QWidget *parent)

    46     : QWidget(parent)

    47 {

    48     QLabel *nameLabel = new QLabel(tr("Name:"));

    49     nameLine = new QLineEdit;

    50     nameLine->setReadOnly(true);

    51 

    52     QLabel *addressLabel = new QLabel(tr("Address:"));

    53     addressText = new QTextEdit;

    54     addressText->setReadOnly(true);

    55     

    56     addButton = new QPushButton(tr("&Add"));

    57     addButton->show();

    58     submitButton = new QPushButton(tr("&Submit"));

    59     submitButton->hide();

    60     cancelButton = new QPushButton(tr("&Cancel"));

    61     cancelButton->hide();

    62 //! [navigation pushbuttons]

    63     nextButton = new QPushButton(tr("&Next"));

    64     nextButton->setEnabled(false);

    65     previousButton = new QPushButton(tr("&Previous"));

    66     previousButton->setEnabled(false);

    67 //! [navigation pushbuttons]

    68 

    69     connect(addButton, SIGNAL(clicked()), this, SLOT(addContact()));

    70     connect(submitButton, SIGNAL(clicked()), this, SLOT(submitContact()));

    71     connect(cancelButton, SIGNAL(clicked()), this, SLOT(cancel()));

    72 //! [connecting navigation signals]    

    73     connect(nextButton, SIGNAL(clicked()), this, SLOT(next()));

    74     connect(previousButton, SIGNAL(clicked()), this, SLOT(previous()));

    75 //! [connecting navigation signals]

    76 

    77     QVBoxLayout *buttonLayout1 = new QVBoxLayout;

    78     buttonLayout1->addWidget(addButton, Qt::AlignTop);

    79     buttonLayout1->addWidget(submitButton);

    80     buttonLayout1->addWidget(cancelButton);

    81     buttonLayout1->addStretch();

    82 //! [navigation layout]

    83     QHBoxLayout *buttonLayout2 = new QHBoxLayout;

    84     buttonLayout2->addWidget(previousButton);

    85     buttonLayout2->addWidget(nextButton);

    86 //! [ navigation layout]

    87     QGridLayout *mainLayout = new QGridLayout;

    88     mainLayout->addWidget(nameLabel, 0, 0);

    89     mainLayout->addWidget(nameLine, 0, 1);

    90     mainLayout->addWidget(addressLabel, 1, 0, Qt::AlignTop);

    91     mainLayout->addWidget(addressText, 1, 1);

    92     mainLayout->addLayout(buttonLayout1, 1, 2);

    93 //! [adding navigation layout]

    94     mainLayout->addLayout(buttonLayout2, 3, 1);

    95 //! [adding navigation layout]

    96     setLayout(mainLayout);

    97     setWindowTitle(tr("Simple Address Book"));

    98 }

    99 

   100 void AddressBook::addContact()

   101 {

   102     oldName = nameLine->text();

   103     oldAddress = addressText->toPlainText();

   104 

   105     nameLine->clear();

   106     addressText->clear();

   107 

   108     nameLine->setReadOnly(false);

   109     nameLine->setFocus(Qt::OtherFocusReason);

   110     addressText->setReadOnly(false);

   111     

   112     addButton->setEnabled(false);

   113 //! [disabling navigation]

   114     nextButton->setEnabled(false);

   115     previousButton->setEnabled(false);

   116 //! [disabling navigation]

   117     submitButton->show();

   118     cancelButton->show();

   119 }

   120 

   121 void AddressBook::submitContact()

   122 {

   123     QString name = nameLine->text();

   124     QString address = addressText->toPlainText();

   125     

   126     if (name == "" || address == "") {

   127         QMessageBox::information(this, tr("Empty Field"),

   128             tr("Please enter a name and address."));

   129     }

   130 

   131     if (!contacts.contains(name)) {

   132         contacts.insert(name, address);

   133         QMessageBox::information(this, tr("Add Successful"),

   134             tr("\"%1\" has been added to your address book.").arg(name));

   135     } else {

   136         QMessageBox::information(this, tr("Add Unsuccessful"),

   137             tr("Sorry, \"%1\" is already in your address book.").arg(name));

   138     }

   139 

   140     if (contacts.isEmpty()) {

   141         nameLine->clear();

   142         addressText->clear();

   143     }

   144 

   145     nameLine->setReadOnly(true);

   146     addressText->setReadOnly(true);

   147     addButton->setEnabled(true);

   148 

   149 //! [enabling navigation]

   150     int number = contacts.size();

   151     nextButton->setEnabled(number > 1);

   152     previousButton->setEnabled(number > 1);

   153 //! [enabling navigation]

   154     submitButton->hide();

   155     cancelButton->hide();

   156 }

   157 

   158 void AddressBook::cancel()

   159 {

   160     nameLine->setText(oldName);

   161     addressText->setText(oldAddress);

   162    

   163     if (contacts.isEmpty()) {

   164         nameLine->clear();

   165         addressText->clear();

   166     }

   167     

   168     nameLine->setReadOnly(true);

   169     addressText->setReadOnly(true);

   170     addButton->setEnabled(true);

   171     

   172     int number = contacts.size();

   173     nextButton->setEnabled(number > 1);

   174     previousButton->setEnabled(number > 1);

   175     

   176     submitButton->hide();

   177     cancelButton->hide();

   178 }

   179 

   180 //! [next() function]

   181 void AddressBook::next()

   182 {

   183     QString name = nameLine->text();

   184     QMap<QString, QString>::iterator i = contacts.find(name);

   185 

   186     if (i != contacts.end())

   187         i++;

   188 

   189     if (i == contacts.end())

   190         i = contacts.begin();

   191 

   192     nameLine->setText(i.key());

   193     addressText->setText(i.value());

   194 }

   195 //! [next() function]

   196 //! [previous() function]

   197 void AddressBook::previous()

   198 {

   199     QString name = nameLine->text();

   200     QMap<QString, QString>::iterator i = contacts.find(name);

   201 

   202     if (i == contacts.end()){

   203         nameLine->clear();

   204         addressText->clear();

   205         return;

   206     }

   207 

   208     if (i == contacts.begin())

   209         i = contacts.end();

   210 

   211     i--;

   212     nameLine->setText(i.key());

   213     addressText->setText(i.value());

   214 }

   215 //! [previous() function]