Merge recipe browser, stylesheet browser and markdown editor examples

This patch merges the qtwebengine examples recipe browser, stylesheet
browser and markdown editor into one single example.

Pick-to: 6.5
Task-number: QTBUG-108751
Change-Id: I338707d7d3275b03bf2a2d7b65064ac91e562d7f
Reviewed-by: Michal Klocek <michal.klocek@qt.io>

1 files changed, 129 insertions, 0 deletions

diff --git a/examples/webenginewidgets/recipebrowser/stylesheetdialog.cpp b/examples/webenginewidgets/recipebrowser/stylesheetdialog.cpp
new file mode 100644
index 000000000..2137617c3
--- /dev/null
+++ b/examples/webenginewidgets/recipebrowser/stylesheetdialog.cpp
@@ -0,0 +1,129 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#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 (const 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();
+}