Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kf6-kwidgetsaddons/source/src/kpagewidget.cpp

@@ -0,0 +1,135 @@
+/*
+    This file is part of the KDE Libraries
+    SPDX-FileCopyrightText: 2006 Tobias Koenig <tokoe@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "kpagewidget.h"
+#include "kpagewidget_p.h"
+
+#include "kpagewidgetmodel.h"
+
+KPageWidgetPrivate::KPageWidgetPrivate(KPageWidget *qq)
+    : KPageViewPrivate(qq)
+{
+}
+
+void KPageWidgetPrivate::slotCurrentPageChanged(const QModelIndex &current, const QModelIndex &before)
+{
+    KPageWidgetItem *currentItem = nullptr;
+    if (current.isValid()) {
+        currentItem = model()->item(current);
+    }
+
+    KPageWidgetItem *beforeItem = nullptr;
+    if (before.isValid()) {
+        beforeItem = model()->item(before);
+    }
+
+    Q_Q(KPageWidget);
+    Q_EMIT q->currentPageChanged(currentItem, beforeItem);
+}
+
+KPageWidget::KPageWidget(KPageWidgetPrivate &dd, QWidget *parent)
+    : KPageView(dd, parent)
+{
+    Q_D(KPageWidget);
+    connect(this, &KPageView::currentPageChanged, this, [d](const QModelIndex &current, const QModelIndex &before) {
+        d->slotCurrentPageChanged(current, before);
+    });
+
+    if (!d->KPageViewPrivate::model) {
+        setModel(new KPageWidgetModel(this));
+    } else {
+        Q_ASSERT(qobject_cast<KPageWidgetModel *>(d->KPageViewPrivate::model));
+    }
+
+    connect(d->model(), &KPageWidgetModel::toggled, this, &KPageWidget::pageToggled);
+}
+
+KPageWidget::KPageWidget(QWidget *parent)
+    : KPageWidget(*new KPageWidgetPrivate(this), parent)
+{
+}
+
+KPageWidget::~KPageWidget()
+{
+}
+
+KPageWidgetItem *KPageWidget::addPage(QWidget *widget, const QString &name)
+{
+    Q_D(KPageWidget);
+
+    return d->model()->addPage(widget, name);
+}
+
+void KPageWidget::addPage(KPageWidgetItem *item)
+{
+    Q_D(KPageWidget);
+
+    d->model()->addPage(item);
+}
+
+KPageWidgetItem *KPageWidget::insertPage(KPageWidgetItem *before, QWidget *widget, const QString &name)
+{
+    Q_D(KPageWidget);
+
+    return d->model()->insertPage(before, widget, name);
+}
+
+void KPageWidget::insertPage(KPageWidgetItem *before, KPageWidgetItem *item)
+{
+    Q_D(KPageWidget);
+
+    d->model()->insertPage(before, item);
+}
+
+KPageWidgetItem *KPageWidget::addSubPage(KPageWidgetItem *parent, QWidget *widget, const QString &name)
+{
+    Q_D(KPageWidget);
+
+    return d->model()->addSubPage(parent, widget, name);
+}
+
+void KPageWidget::addSubPage(KPageWidgetItem *parent, KPageWidgetItem *item)
+{
+    Q_D(KPageWidget);
+
+    d->model()->addSubPage(parent, item);
+}
+
+void KPageWidget::removePage(KPageWidgetItem *item)
+{
+    Q_D(KPageWidget);
+
+    Q_EMIT pageRemoved(item); // Q_EMIT signal before we remove it, because the item will be deleted in the model
+    d->model()->removePage(item);
+}
+
+void KPageWidget::setCurrentPage(KPageWidgetItem *item)
+{
+    Q_D(KPageWidget);
+
+    const QModelIndex index = d->model()->index(item);
+    if (!index.isValid()) {
+        return;
+    }
+
+    KPageView::setCurrentPage(index);
+}
+
+KPageWidgetItem *KPageWidget::currentPage() const
+{
+    Q_D(const KPageWidget);
+
+    const QModelIndex index = KPageView::currentPage();
+
+    if (!index.isValid()) {
+        return nullptr;
+    }
+
+    return d->model()->item(index);
+}
+
+#include "moc_kpagewidget.cpp"