informationwindow.cpp Example File

drilldown/informationwindow.cpp
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#include "informationwindow.h" InformationWindow::InformationWindow(int id, QSqlRelationalTableModel *items, QWidget *parent) : QDialog(parent) { 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; imageFileEditor = new QComboBox; imageFileEditor->setModel(items->relationModel(1)); imageFileEditor->setModelColumn(items->relationModel(1)->fieldIndex("file")); 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); 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()); } int InformationWindow::id() const { return itemId; } void InformationWindow::revert() { mapper->revert(); enableButtons(false); } void InformationWindow::submit() { QString newImage(imageFileEditor->currentText()); if (displayedImage != newImage) { displayedImage = newImage; emit imageChanged(itemId, newImage); } mapper->submit(); mapper->setCurrentIndex(itemId); enableButtons(false); } 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); buttonBox = new QDialogButtonBox(this); buttonBox->addButton(submitButton, QDialogButtonBox::AcceptRole); buttonBox->addButton(revertButton, QDialogButtonBox::ResetRole); buttonBox->addButton(closeButton, QDialogButtonBox::RejectRole); } void InformationWindow::enableButtons(bool enable) { revertButton->setEnabled(enable); submitButton->setEnabled(enable); }