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diff --git a/src/dialogs/qquickmessagedialog.cpp b/src/dialogs/qquickmessagedialog.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtQuick.Dialogs module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickmessagedialog_p.h"
+#include <QQuickItem>
+#include <private/qguiapplication_p.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \qmltype AbstractMessageDialog
+    \instantiates QQuickMessageDialog
+    \inqmlmodule QtQuick.Dialogs 1
+    \ingroup qtquick-visual
+    \brief API wrapper for QML message dialog implementations
+    \since 5.2
+    \internal
+
+    AbstractMessageDialog provides only the API for implementing a message dialog.
+    The implementation (e.g. a Window or preferably an Item, in case it is
+    shown on a device that doesn't support multiple windows) can be provided as
+    \l implementation, which is the default property (the only allowed child
+    element).
+*/
+
+/*!
+    \qmlsignal QtQuick::Dialogs::AbstractMessageDialog::accepted
+
+    This signal is emitted by \l accept().
+*/
+
+/*!
+    \qmlsignal QtQuick::Dialogs::AbstractMessageDialog::rejected
+
+    This signal is emitted by \l reject().
+*/
+
+/*!
+    \class QQuickMessageDialog
+    \inmodule QtQuick.Dialogs
+    \internal
+
+    The QQuickMessageDialog class is a concrete subclass of
+    \l QQuickAbstractMessageDialog, but it is abstract from the QML perspective
+    because it needs to enclose a graphical implementation. It exists in order
+    to provide accessors and helper functions which the QML implementation will
+    need.
+
+    \since 5.2
+*/
+
+/*!
+    Constructs a message dialog wrapper with parent window \a parent.
+*/
+QQuickMessageDialog::QQuickMessageDialog(QObject *parent)
+    : QQuickAbstractMessageDialog(parent)
+{
+    connect(this, SIGNAL(buttonClicked()), this, SLOT(clicked()));
+}
+
+
+/*!
+    Destroys the message dialog wrapper.
+*/
+QQuickMessageDialog::~QQuickMessageDialog()
+{
+}
+
+/*!
+    \qmlproperty bool AbstractMessageDialog::visible
+
+    This property holds whether the dialog is visible. By default this is false.
+*/
+
+/*!
+    \qmlproperty QObject AbstractMessageDialog::implementation
+
+    The QML object which implements the actual message dialog. Should be either a
+    \l Window or an \l Item.
+*/
+
+
+void QQuickMessageDialog::clicked() {
+    switch (m_clickedButton) {
+    // This mapping from buttons to roles is the same as
+    // documented for enum QMessageBox::StandardButton
+    case Ok:
+    case Open:
+    case Save:
+    case SaveAll:
+    case Retry:
+    case Ignore:
+        accept();
+        break;
+    case Cancel:
+    case Close:
+    case Abort:
+        reject();
+        break;
+    case Discard:
+        emit discard();
+        close();
+        break;
+    case Help:
+        emit help();
+        break;
+    case Yes:
+    case YesToAll:
+        emit yes();
+        close();
+        break;
+    case No:
+    case NoToAll:
+        emit no();
+        close();
+        break;
+    case Apply:
+        emit apply();
+        break;
+    case Reset:
+    case RestoreDefaults:
+        emit reset();
+        break;
+    default:
+        qWarning("StandardButton %d has no role", m_clickedButton);
+    }
+}
+
+void QQuickMessageDialog::accept() {
+    // enter key is treated like OK
+    if (m_clickedButton == NoButton)
+        m_clickedButton = Ok;
+    QQuickAbstractMessageDialog::accept();
+}
+
+void QQuickMessageDialog::reject() {
+    // escape key is treated like cancel
+    if (m_clickedButton == NoButton)
+        m_clickedButton = Cancel;
+    QQuickAbstractMessageDialog::reject();
+}
+
+QT_END_NAMESPACE