Settings Editor Example

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#include <QtWidgets> #include "locationdialog.h" LocationDialog::LocationDialog(QWidget *parent) : QDialog(parent) { formatComboBox = new QComboBox; formatComboBox->addItem(tr("Native")); formatComboBox->addItem(tr("INI")); scopeComboBox = new QComboBox; scopeComboBox->addItem(tr("User")); scopeComboBox->addItem(tr("System")); organizationComboBox = new QComboBox; organizationComboBox->addItem(tr("QtProject")); organizationComboBox->setEditable(true); applicationComboBox = new QComboBox; applicationComboBox->addItem(tr("Any")); applicationComboBox->addItem(tr("Qt Creator")); applicationComboBox->addItem(tr("Application Example")); applicationComboBox->addItem(tr("Assistant")); applicationComboBox->addItem(tr("Designer")); applicationComboBox->addItem(tr("Linguist")); applicationComboBox->setEditable(true); applicationComboBox->setCurrentIndex(1); formatLabel = new QLabel(tr("&Format:")); formatLabel->setBuddy(formatComboBox); scopeLabel = new QLabel(tr("&Scope:")); scopeLabel->setBuddy(scopeComboBox); organizationLabel = new QLabel(tr("&Organization:")); organizationLabel->setBuddy(organizationComboBox); applicationLabel = new QLabel(tr("&Application:")); applicationLabel->setBuddy(applicationComboBox); locationsGroupBox = new QGroupBox(tr("Setting Locations")); QStringList labels; labels << tr("Location") << tr("Access"); locationsTable = new QTableWidget; locationsTable->setSelectionMode(QAbstractItemView::SingleSelection); locationsTable->setSelectionBehavior(QAbstractItemView::SelectRows); locationsTable->setEditTriggers(QAbstractItemView::NoEditTriggers); locationsTable->setColumnCount(2); locationsTable->setHorizontalHeaderLabels(labels); locationsTable->horizontalHeader()->setSectionResizeMode(0, QHeaderView::Stretch); locationsTable->horizontalHeader()->resizeSection(1, 180); connect(locationsTable, &QTableWidget::itemActivated, this, &LocationDialog::itemActivated); buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel); connect(formatComboBox, QOverload<int>::of(&QComboBox::activated), this, &LocationDialog::updateLocationsTable); connect(scopeComboBox, QOverload<int>::of(&QComboBox::activated), this, &LocationDialog::updateLocationsTable); connect(organizationComboBox->lineEdit(), &QLineEdit::editingFinished, this, &LocationDialog::updateLocationsTable); connect(applicationComboBox->lineEdit(), &QLineEdit::editingFinished, this, &LocationDialog::updateLocationsTable); connect(applicationComboBox, QOverload<int>::of(&QComboBox::activated), this, &LocationDialog::updateLocationsTable); connect(buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept); connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject); QVBoxLayout *locationsLayout = new QVBoxLayout(locationsGroupBox); locationsLayout->addWidget(locationsTable); QGridLayout *mainLayout = new QGridLayout(this); mainLayout->addWidget(formatLabel, 0, 0); mainLayout->addWidget(formatComboBox, 0, 1); mainLayout->addWidget(scopeLabel, 1, 0); mainLayout->addWidget(scopeComboBox, 1, 1); mainLayout->addWidget(organizationLabel, 2, 0); mainLayout->addWidget(organizationComboBox, 2, 1); mainLayout->addWidget(applicationLabel, 3, 0); mainLayout->addWidget(applicationComboBox, 3, 1); mainLayout->addWidget(locationsGroupBox, 4, 0, 1, 2); mainLayout->addWidget(buttonBox, 5, 0, 1, 2); updateLocationsTable(); setWindowTitle(tr("Open Application Settings")); resize(650, 400); } QSettings::Format LocationDialog::format() const { if (formatComboBox->currentIndex() == 0) return QSettings::NativeFormat; else return QSettings::IniFormat; } QSettings::Scope LocationDialog::scope() const { if (scopeComboBox->currentIndex() == 0) return QSettings::UserScope; else return QSettings::SystemScope; } QString LocationDialog::organization() const { return organizationComboBox->currentText(); } QString LocationDialog::application() const { if (applicationComboBox->currentText() == tr("Any")) return QString(); else return applicationComboBox->currentText(); } void LocationDialog::itemActivated(QTableWidgetItem *) { buttonBox->button(QDialogButtonBox::Ok)->animateClick(); } void LocationDialog::updateLocationsTable() { locationsTable->setUpdatesEnabled(false); locationsTable->setRowCount(0); for (int i = 0; i < 2; ++i) { if (i == 0 && scope() == QSettings::SystemScope) continue; QSettings::Scope actualScope = (i == 0) ? QSettings::UserScope : QSettings::SystemScope; for (int j = 0; j < 2; ++j) { if (j == 0 && application().isEmpty()) continue; QString actualApplication; if (j == 0) actualApplication = application(); QSettings settings(format(), actualScope, organization(), actualApplication); int row = locationsTable->rowCount(); locationsTable->setRowCount(row + 1); QTableWidgetItem *item0 = new QTableWidgetItem(QDir::toNativeSeparators(settings.fileName())); QTableWidgetItem *item1 = new QTableWidgetItem; bool disable = (settings.childKeys().isEmpty() && settings.childGroups().isEmpty()); if (row == 0) { if (settings.isWritable()) { item1->setText(tr("Read-write")); disable = false; } else { item1->setText(tr("Read-only")); } buttonBox->button(QDialogButtonBox::Ok)->setDisabled(disable); } else { item1->setText(tr("Read-only fallback")); } if (disable) { item0->setFlags(item0->flags() & ~Qt::ItemIsEnabled); item1->setFlags(item1->flags() & ~Qt::ItemIsEnabled); } locationsTable->setItem(row, 0, item0); locationsTable->setItem(row, 1, item1); } } locationsTable->setUpdatesEnabled(true); }