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    41 

    42 #include "informationwindow.h"

    43 

    44 //! [0]

    45 InformationWindow::InformationWindow(int id, QSqlRelationalTableModel *offices,

    46                                      QWidget *parent)

    47     : QDialog(parent)

    48 {

    49 //! [0] //! [1]

    50     QLabel *locationLabel = new QLabel(tr("Location: "));

    51     QLabel *countryLabel = new QLabel(tr("Country: "));

    52     QLabel *descriptionLabel = new QLabel(tr("Description: "));

    53     QLabel *imageFileLabel = new QLabel(tr("Image file: "));

    54 

    55     createButtons();

    56 

    57     locationText = new QLabel;

    58     countryText = new QLabel;

    59     descriptionEditor = new QTextEdit;

    60 //! [1]

    61 

    62 //! [2]

    63     imageFileEditor = new QComboBox;

    64     imageFileEditor->setModel(offices->relationModel(1));

    65     imageFileEditor->setModelColumn(offices->relationModel(1)->fieldIndex("file"));

    66 //! [2]

    67 

    68 //! [3]

    69     mapper = new QDataWidgetMapper(this);

    70     mapper->setModel(offices);

    71     mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);

    72     mapper->setItemDelegate(new QSqlRelationalDelegate(mapper));

    73     mapper->addMapping(imageFileEditor, 1);

    74     mapper->addMapping(locationText, 2, "text");

    75     mapper->addMapping(countryText, 3, "text");

    76     mapper->addMapping(descriptionEditor, 4);

    77     mapper->setCurrentIndex(id);

    78 //! [3]

    79 

    80 //! [4]

    81     connect(descriptionEditor, SIGNAL(textChanged()),

    82             this, SLOT(enableButtons()));

    83     connect(imageFileEditor, SIGNAL(currentIndexChanged(int)),

    84             this, SLOT(enableButtons()));

    85 

    86     QFormLayout *formLayout = new QFormLayout;

    87     formLayout->addRow(locationLabel, locationText);

    88     formLayout->addRow(countryLabel, countryText);

    89     formLayout->addRow(imageFileLabel, imageFileEditor);

    90     formLayout->addRow(descriptionLabel, descriptionEditor);

    91 

    92     QVBoxLayout *layout = new QVBoxLayout;

    93     layout->addLayout(formLayout);

    94     layout->addWidget(buttonBox);

    95     setLayout(layout);

    96 

    97     locationId = id;

    98     displayedImage = imageFileEditor->currentText();

    99 

   100     setWindowFlags(Qt::Window);

   101     enableButtons(false);

   102     setWindowTitle(tr("Office: %1").arg(locationText->text()));

   103 }

   104 //! [4]

   105 

   106 //! [5]

   107 int InformationWindow::id()

   108 {

   109     return locationId;

   110 }

   111 //! [5]

   112 

   113 //! [6]

   114 void InformationWindow::revert()

   115 {

   116     mapper->revert();

   117     enableButtons(false);

   118 }

   119 //! [6]

   120 

   121 //! [7]

   122 void InformationWindow::submit()

   123 {

   124     QString newImage(imageFileEditor->currentText());

   125 

   126     if (displayedImage != newImage) {

   127         displayedImage = newImage;

   128         emit imageChanged(locationId, newImage);

   129     }

   130 

   131     mapper->submit();

   132     mapper->setCurrentIndex(locationId);

   133 

   134     enableButtons(false);

   135 }

   136 //! [7]

   137 

   138 //! [8]

   139 void InformationWindow::createButtons()

   140 {

   141     closeButton = new QPushButton(tr("&Close"));

   142     revertButton = new QPushButton(tr("&Revert"));

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

   144 

   145     closeButton->setDefault(true);

   146 

   147     connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));

   148     connect(revertButton, SIGNAL(clicked()), this, SLOT(revert()));

   149     connect(submitButton, SIGNAL(clicked()), this, SLOT(submit()));

   150 //! [8]

   151 

   152 //! [9]

   153     buttonBox = new QDialogButtonBox(this);

   154     buttonBox->addButton(submitButton, QDialogButtonBox::AcceptRole);

   155     buttonBox->addButton(revertButton, QDialogButtonBox::ResetRole);

   156     buttonBox->addButton(closeButton, QDialogButtonBox::RejectRole);

   157 }

   158 //! [9]

   159 

   160 //! [10]

   161 void InformationWindow::enableButtons(bool enable)

   162 {

   163     revertButton->setEnabled(enable);

   164     submitButton->setEnabled(enable);

   165 }

   166 //! [10]

   167 

   168