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diff --git a/src/quicktemplates2/qquickcheckdelegate.cpp b/src/quicktemplates2/qquickcheckdelegate.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickcheckdelegate_p.h"
+#include "qquickitemdelegate_p_p.h"
+
+#include <QtGui/qpa/qplatformtheme.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \qmltype CheckDelegate
+    \inherits ItemDelegate
+    \instantiates QQuickCheckDelegate
+    \inqmlmodule QtQuick.Controls
+    \since 5.7
+    \ingroup qtquickcontrols2-delegates
+    \brief Item delegate with a check indicator that can be toggled on or off.
+
+    \image qtquickcontrols2-checkdelegate.gif
+
+    CheckDelegate presents an item delegate that can be toggled on (checked) or
+    off (unchecked). Check delegates are typically used to select one or more
+    options from a set of options in a list. For smaller sets of options, or
+    for options that need to be uniquely identifiable, consider using
+    \l CheckBox instead.
+
+    CheckDelegate inherits its API from \l ItemDelegate, which is inherited
+    from AbstractButton. For instance, you can set \l {AbstractButton::text}{text},
+    and react to \l {AbstractButton::clicked}{clicks} using the AbstractButton
+    API. The state of the check delegate can be set with the
+    \l {AbstractButton::}{checked} property.
+
+    In addition to the checked and unchecked states, there is a third state:
+    partially checked. The partially checked state can be enabled using the
+    \l tristate property. This state indicates that the regular checked/unchecked
+    state can not be determined; generally because of other states that affect
+    the check delegate. This state is useful when several child nodes are selected
+    in a treeview, for example.
+
+    \code
+    ListView {
+        model: ["Option 1", "Option 2", "Option 3"]
+        delegate: CheckDelegate {
+            text: modelData
+        }
+    }
+    \endcode
+
+    \sa {Customizing CheckDelegate}, {Delegate Controls}, CheckBox
+*/
+
+class QQuickCheckDelegatePrivate : public QQuickItemDelegatePrivate
+{
+    Q_DECLARE_PUBLIC(QQuickCheckDelegate)
+
+public:
+    QQuickCheckDelegatePrivate()
+        : tristate(false), checkState(Qt::Unchecked)
+    {
+    }
+
+    bool tristate;
+    Qt::CheckState checkState;
+};
+
+QQuickCheckDelegate::QQuickCheckDelegate(QQuickItem *parent) :
+    QQuickItemDelegate(*(new QQuickCheckDelegatePrivate), parent)
+{
+    setCheckable(true);
+}
+
+/*!
+    \qmlproperty bool QtQuick.Controls::CheckDelegate::tristate
+
+    This property determines whether the check delegate has three states.
+
+    In the animation below, the first checkdelegate is tri-state:
+
+    \image qtquickcontrols2-checkdelegate-tristate.gif
+
+    The default is \c false, i.e., the delegate has only two states.
+*/
+bool QQuickCheckDelegate::isTristate() const
+{
+    Q_D(const QQuickCheckDelegate);
+    return d->tristate;
+}
+
+void QQuickCheckDelegate::setTristate(bool tristate)
+{
+    Q_D(QQuickCheckDelegate);
+    if (d->tristate == tristate)
+        return;
+
+    d->tristate = tristate;
+    emit tristateChanged();
+}
+
+/*!
+    \qmlproperty enumeration QtQuick.Controls::CheckDelegate::checkState
+
+    This property determines the check state of the check delegate.
+
+    Available states:
+    \value Qt.Unchecked The delegate is unchecked.
+    \value Qt.PartiallyChecked The delegate is partially checked. This state is only used when \l tristate is enabled.
+    \value Qt.Checked The delegate is checked.
+
+    \sa tristate, {AbstractButton::checked}{checked}
+*/
+Qt::CheckState QQuickCheckDelegate::checkState() const
+{
+    Q_D(const QQuickCheckDelegate);
+    return d->checkState;
+}
+
+void QQuickCheckDelegate::setCheckState(Qt::CheckState state)
+{
+    Q_D(QQuickCheckDelegate);
+    if (d->checkState == state)
+        return;
+
+    if (!d->tristate && state == Qt::PartiallyChecked)
+        setTristate(true);
+
+    bool wasChecked = isChecked();
+    d->checked = state != Qt::Unchecked;
+    d->checkState = state;
+    emit checkStateChanged();
+    if (d->checked != wasChecked)
+        emit checkedChanged();
+}
+
+QFont QQuickCheckDelegate::defaultFont() const
+{
+    return QQuickControlPrivate::themeFont(QPlatformTheme::ListViewFont);
+}
+
+void QQuickCheckDelegate::checkStateSet()
+{
+    setCheckState(isChecked() ? Qt::Checked : Qt::Unchecked);
+}
+
+void QQuickCheckDelegate::nextCheckState()
+{
+    Q_D(QQuickCheckDelegate);
+    if (d->tristate)
+        setCheckState(static_cast<Qt::CheckState>((d->checkState + 1) % 3));
+    else
+        QQuickItemDelegate::nextCheckState();
+}
+
+#ifndef QT_NO_ACCESSIBILITY
+QAccessible::Role QQuickCheckDelegate::accessibleRole() const
+{
+    return QAccessible::CheckBox;
+}
+#endif
+
+QT_END_NAMESPACE