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, 48 insertions, 0 deletions

diff --git a/examples/webenginewidgets/recipebrowser/document.cpp b/examples/webenginewidgets/recipebrowser/document.cpp
new file mode 100644
index 000000000..c991e14f8
--- /dev/null
+++ b/examples/webenginewidgets/recipebrowser/document.cpp
@@ -0,0 +1,48 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "document.h"
+
+#include <QSettings>
+
+Document::Document(QObject *parent) : QObject(parent)
+{
+    QSettings settings;
+    settings.beginGroup("textCollection");
+    QStringList pageTexts = settings.allKeys();
+    for (const QString &name : std::as_const(pageTexts)) {
+        QString pageText = settings.value(name).value<QString>();
+        if (!pageText.isEmpty())
+            m_textCollection.insert(name, pageText);
+    }
+    settings.endGroup();
+}
+
+void Document::setTextEdit(QPlainTextEdit *textEdit)
+{
+    m_textEdit = textEdit;
+}
+
+void Document::setCurrentPage(const QString &page)
+{
+    m_currentPage = page;
+}
+
+void Document::setInitialText(const QString &text)
+{
+    m_textEdit->setPlainText(m_textCollection.value(m_currentPage, text));
+}
+
+void Document::setText(const QString &text)
+{
+    if (text == m_currentText)
+        return;
+    m_currentText = text;
+    emit textChanged(m_currentText);
+
+    QSettings settings;
+    settings.beginGroup("textCollection");
+    settings.setValue(m_currentPage, text);
+    m_textCollection.insert(m_currentPage, text);
+    settings.endGroup();
+}