stylesheetdialog.cpp Example File

webenginewidgets/stylesheetbrowser/stylesheetdialog.cpp
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 #include "mainwindow.h"
 #include "stylesheetdialog.h"
 #include "ui_stylesheetdialog.h"

 StylesheetDialog::StylesheetDialog(QWidget *parent) :
     QDialog(parent),
     ui(new Ui::StylesheetDialog)
 {
     ui->setupUi(this);

     connect(ui->styleSheetList, &QListWidget::currentItemChanged, this, &StylesheetDialog::currentStyleSheetChanged);
     connect(ui->styleSheetList, &QListWidget::itemClicked, this, &StylesheetDialog::listItemClicked);
     connect(ui->fileNameEdit, &QLineEdit::textChanged, this, &StylesheetDialog::fileNameChanged);

     connect(ui->addButton, &QPushButton::clicked, this, &StylesheetDialog::addButtonClicked);
     connect(ui->removeButton, &QPushButton::clicked, this, &StylesheetDialog::removeButtonClicked);

     QSettings settings;
     settings.beginGroup("styleSheets");
     for (auto name : settings.allKeys()) {
         QListWidgetItem *listItem = new QListWidgetItem(name,  ui->styleSheetList);
         listItem->setFlags(listItem->flags() | Qt::ItemIsUserCheckable);
         bool checked = settings.value(name).value<StyleSheet>().second;
         listItem->setCheckState(checked ? Qt::Checked : Qt::Unchecked);
     }
     settings.endGroup();
 }

 StylesheetDialog::~StylesheetDialog()
 {
     delete ui;
 }

 void StylesheetDialog::currentStyleSheetChanged(QListWidgetItem *current, QListWidgetItem *previous)
 {
     if (!previous) {
         // Select the first item on startup
         ui->styleSheetList->setCurrentItem(current);
     }

     if (!current) {
         ui->fileNameEdit->setText(QString());
         ui->sourceCodeEdit->setPlainText(QString());
         return;
     }

     QSettings settings;
     settings.beginGroup("styleSheets");
     ui->fileNameEdit->setText(current->text());
     const QString source = settings.value(current->text()).value<StyleSheet>().first;
     ui->sourceCodeEdit->setPlainText(source);
     settings.endGroup();
 }

 void StylesheetDialog::listItemClicked(QListWidgetItem *item)
 {
     MainWindow *window = static_cast<MainWindow *>(parent());
     const QString name = item->text();
     bool checkedStateChanged =
             (item->checkState() == Qt::Checked && !window->hasStyleSheet(name)) ||
             (item->checkState() == Qt::Unchecked && window->hasStyleSheet(name));
     if (!checkedStateChanged)
         return;

     QSettings settings;
     settings.beginGroup("styleSheets");
     const QString source = settings.value(name).value<StyleSheet>().first;

     if (item->checkState() == Qt::Checked) {
         settings.setValue(name, QVariant::fromValue(qMakePair(source, true)));
         window->insertStyleSheet(name, source, true);
     } else {
         settings.setValue(name, QVariant::fromValue(qMakePair(source, false)));
         window->removeStyleSheet(name, true);
     }

     settings.endGroup();
 }

 void StylesheetDialog::fileNameChanged(const QString &text)
 {
     QList<QListWidgetItem *> items = ui->styleSheetList->findItems(text, Qt::MatchFixedString);
     if (items.size())
         ui->addButton->setEnabled(false);
     else
         ui->addButton->setEnabled(true);
 }

 void StylesheetDialog::addButtonClicked()
 {
     const QString name = ui->fileNameEdit->text();
     const QString source = ui->sourceCodeEdit->toPlainText();
     if (name.isEmpty() || source.isEmpty())
         return;

     QListWidgetItem *listItem = new QListWidgetItem(ui->fileNameEdit->text(),  ui->styleSheetList);
     listItem->setFlags(listItem->flags() | Qt::ItemIsUserCheckable);
     listItem->setCheckState(Qt::Checked);

     MainWindow *window = static_cast<MainWindow *>(parent());
     window->insertStyleSheet(name, source, true);

     QSettings settings;
     settings.beginGroup("styleSheets");
     settings.setValue(name, QVariant::fromValue(qMakePair(source, true)));
     settings.endGroup();

     ui->addButton->setEnabled(false);
 }

 void StylesheetDialog::removeButtonClicked()
 {
     if (ui->styleSheetList->selectedItems().isEmpty())
         return;

     MainWindow *window = static_cast<MainWindow *>(parent());
     QSettings settings;
     settings.beginGroup("styleSheets");

     QListWidgetItem *item = ui->styleSheetList->selectedItems().first();
     const QString name = item->text();
     window->removeStyleSheet(name, true);
     settings.remove(name);
     delete item;

     settings.endGroup();
 }