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| ** This file is part of the examples of the Qt Toolkit. |
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| |
| #include "informationwindow.h" |
| |
| //! [0] |
| InformationWindow::InformationWindow(int id, QSqlRelationalTableModel *items, |
| QWidget *parent) |
| : QDialog(parent) |
| { |
| //! [0] //! [1] |
| QLabel *itemLabel = new QLabel(tr("Item: ")); |
| QLabel *descriptionLabel = new QLabel(tr("Description: ")); |
| QLabel *imageFileLabel = new QLabel(tr("Image file: ")); |
| |
| createButtons(); |
| |
| itemText = new QLabel; |
| descriptionEditor = new QTextEdit; |
| //! [1] |
| |
| //! [2] |
| imageFileEditor = new QComboBox; |
| imageFileEditor->setModel(items->relationModel(1)); |
| imageFileEditor->setModelColumn(items->relationModel(1)->fieldIndex("file")); |
| //! [2] |
| |
| //! [3] |
| mapper = new QDataWidgetMapper(this); |
| mapper->setModel(items); |
| mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit); |
| mapper->setItemDelegate(new QSqlRelationalDelegate(mapper)); |
| mapper->addMapping(imageFileEditor, 1); |
| mapper->addMapping(itemText, 2, "text"); |
| mapper->addMapping(descriptionEditor, 3); |
| mapper->setCurrentIndex(id); |
| //! [3] |
| |
| //! [4] |
| connect(descriptionEditor, &QTextEdit::textChanged, [=]() { |
| enableButtons(); |
| }); |
| connect(imageFileEditor, QOverload<int>::of(&QComboBox::currentIndexChanged), [=]() { |
| enableButtons(); |
| }); |
| |
| QFormLayout *formLayout = new QFormLayout; |
| formLayout->addRow(itemLabel, itemText); |
| formLayout->addRow(imageFileLabel, imageFileEditor); |
| formLayout->addRow(descriptionLabel, descriptionEditor); |
| |
| QVBoxLayout *layout = new QVBoxLayout; |
| layout->addLayout(formLayout); |
| layout->addWidget(buttonBox); |
| setLayout(layout); |
| |
| itemId = id; |
| displayedImage = imageFileEditor->currentText(); |
| |
| setWindowFlags(Qt::Window); |
| enableButtons(false); |
| setWindowTitle(itemText->text()); |
| } |
| //! [4] |
| |
| //! [5] |
| int InformationWindow::id() const |
| { |
| return itemId; |
| } |
| //! [5] |
| |
| //! [6] |
| void InformationWindow::revert() |
| { |
| mapper->revert(); |
| enableButtons(false); |
| } |
| //! [6] |
| |
| //! [7] |
| void InformationWindow::submit() |
| { |
| QString newImage(imageFileEditor->currentText()); |
| |
| if (displayedImage != newImage) { |
| displayedImage = newImage; |
| emit imageChanged(itemId, newImage); |
| } |
| |
| mapper->submit(); |
| mapper->setCurrentIndex(itemId); |
| |
| enableButtons(false); |
| } |
| //! [7] |
| |
| //! [8] |
| void InformationWindow::createButtons() |
| { |
| closeButton = new QPushButton(tr("&Close")); |
| revertButton = new QPushButton(tr("&Revert")); |
| submitButton = new QPushButton(tr("&Submit")); |
| |
| closeButton->setDefault(true); |
| |
| connect(closeButton, &QPushButton::clicked, this, &InformationWindow::close); |
| connect(revertButton, &QPushButton::clicked, this, &InformationWindow::revert); |
| connect(submitButton, &QPushButton::clicked, this, &InformationWindow::submit); |
| //! [8] |
| |
| //! [9] |
| buttonBox = new QDialogButtonBox(this); |
| buttonBox->addButton(submitButton, QDialogButtonBox::AcceptRole); |
| buttonBox->addButton(revertButton, QDialogButtonBox::ResetRole); |
| buttonBox->addButton(closeButton, QDialogButtonBox::RejectRole); |
| } |
| //! [9] |
| |
| //! [10] |
| void InformationWindow::enableButtons(bool enable) |
| { |
| revertButton->setEnabled(enable); |
| submitButton->setEnabled(enable); |
| } |
| //! [10] |
| |
| |