QQmlListAccessor: Support registered sequence types

Since we can pass any registered sequence types through QML as-is now,
they are not wrapped into JS arrays anymore. We have to accept them as
models because we also accept JS arrays.

Fixes: QTBUG-102857
Change-Id: Ib294fff3681dce7f754efe877b19d17e698b4911
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
(cherry picked from commit 01f6ba9949a2f4ef2ac38d14f9d6f3ccff5852c9)

4 files changed, 106 insertions, 0 deletions

diff --git a/tests/auto/quick/qquicklistview2/CMakeLists.txt b/tests/auto/quick/qquicklistview2/CMakeLists.txt
index 0c4179dc31..a89a7737cf 100644
--- a/tests/auto/quick/qquicklistview2/CMakeLists.txt
+++ b/tests/auto/quick/qquicklistview2/CMakeLists.txt
@@ -6,6 +6,7 @@ list(APPEND test_data ${test_data_glob})
 
 qt_internal_add_test(tst_qquicklistview2
     SOURCES
+        listviewwithsequences.h
         typerolemodel.h typerolemodel.cpp
         tst_qquicklistview2.cpp
     DEFINES
diff --git a/tests/auto/quick/qquicklistview2/data/metaSequenceAsModel.qml b/tests/auto/quick/qquicklistview2/data/metaSequenceAsModel.qml
new file mode 100644
index 0000000000..527cab9e0c
--- /dev/null
+++ b/tests/auto/quick/qquicklistview2/data/metaSequenceAsModel.qml
@@ -0,0 +1,12 @@
+import QtQuick
+import Test
+
+ListViewWithSequences {
+    id: view
+    rects: [ Qt.rect(1, 2, 3, 4), Qt.rect(5, 6, 7, 8) ]
+
+    model: rects
+    delegate: Item {
+        Component.onCompleted: view.texts.push(modelData.x + "/" + modelData.y)
+    }
+}
diff --git a/tests/auto/quick/qquicklistview2/listviewwithsequences.h b/tests/auto/quick/qquicklistview2/listviewwithsequences.h
new file mode 100644
index 0000000000..8a2c6e4db4
--- /dev/null
+++ b/tests/auto/quick/qquicklistview2/listviewwithsequences.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef LISTVIEWWITHSEQUENCES_H
+#define LISTVIEWWITHSEQUENCES_H
+
+#include <private/qquicklistview_p.h>
+#include <QtQml/qqml.h>
+#include <QtCore/qrect.h>
+
+class ListViewWithSequences : public QQuickListView {
+    Q_OBJECT
+    QML_ELEMENT
+    Q_PROPERTY(QList<QRectF> rects READ rects WRITE setRects NOTIFY rectsChanged)
+    Q_PROPERTY(QList<QString> texts READ texts WRITE setTexts NOTIFY textsChanged)
+public:
+    ListViewWithSequences(QQuickItem *parent = nullptr) : QQuickListView(parent) {}
+
+    const QList<QRectF> &rects() const { return m_rects; }
+    void setRects(const QList<QRectF> &rects)
+    {
+        if (rects != m_rects) {
+            m_rects = rects;
+            emit rectsChanged();
+        }
+    }
+
+    const QList<QString> &texts() const { return m_texts; }
+    void setTexts(const QList<QString> &texts)
+    {
+        if (texts != m_texts) {
+            m_texts = texts;
+            emit textsChanged();
+        }
+    }
+
+signals:
+    void rectsChanged();
+    void textsChanged();
+
+private:
+    QList<QRectF> m_rects;
+    QList<QString> m_texts;
+};
+
+struct RectListForeign
+{
+    Q_GADGET
+    QML_FOREIGN(QList<QRectF>)
+    QML_SEQUENTIAL_CONTAINER(QRectF)
+    QML_ANONYMOUS
+};
+
+#endif // LISTVIEWWITHSEQUENCES_H
diff --git a/tests/auto/quick/qquicklistview2/tst_qquicklistview2.cpp b/tests/auto/quick/qquicklistview2/tst_qquicklistview2.cpp
index 6cc7abef39..f7bbbb22e8 100644
--- a/tests/auto/quick/qquicklistview2/tst_qquicklistview2.cpp
+++ b/tests/auto/quick/qquicklistview2/tst_qquicklistview2.cpp
@@ -57,6 +57,7 @@ private slots:
     void singletonModelLifetime();
 
     void sectionsNoOverlap();
+    void metaSequenceAsModel();
 };
 
 tst_QQuickListView2::tst_QQuickListView2()
@@ -275,6 +276,18 @@ void tst_QQuickListView2::sectionsNoOverlap()
     }
 }
 
+void tst_QQuickListView2::metaSequenceAsModel()
+{
+    QQmlEngine engine;
+    QQmlComponent c(&engine, testFileUrl("metaSequenceAsModel.qml"));
+    QVERIFY2(c.isReady(), qPrintable(c.errorString()));
+    QScopedPointer<QObject> o(c.create());
+    QVERIFY(!o.isNull());
+    QStringList strings = qvariant_cast<QStringList>(o->property("texts"));
+    QCOMPARE(strings.length(), 2);
+    QCOMPARE(strings[0], QStringLiteral("1/2"));
+    QCOMPARE(strings[1], QStringLiteral("5/6"));
+}
 
 class SingletonModel : public QStringListModel
 {