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diff --git a/src/platformsupport/dbusmenu/qdbusmenutypes.cpp b/src/platformsupport/dbusmenu/qdbusmenutypes.cpp
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+++ b/src/platformsupport/dbusmenu/qdbusmenutypes.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2015 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** 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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdbusmenutypes_p.h"
+
+#include <QDBusConnection>
+#include <QDBusMetaType>
+#include <QImage>
+#include <QIcon>
+#include <QImage>
+#include <QPixmap>
+#include <QDebug>
+#include <QtEndian>
+#include <QBuffer>
+#include <qpa/qplatformmenu.h>
+#include "qdbusplatformmenu_p.h"
+
+QT_BEGIN_NAMESPACE
+
+const QDBusArgument &operator<<(QDBusArgument &arg, const QDBusMenuItem &item)
+{
+    arg.beginStructure();
+    arg << item.m_id << item.m_properties;
+    arg.endStructure();
+    return arg;
+}
+
+const QDBusArgument &operator>>(const QDBusArgument &arg, QDBusMenuItem &item)
+{
+    arg.beginStructure();
+    arg >> item.m_id >> item.m_properties;
+    arg.endStructure();
+    return arg;
+}
+
+const QDBusArgument &operator<<(QDBusArgument &arg, const QDBusMenuItemKeys &keys)
+{
+    arg.beginStructure();
+    arg << keys.id << keys.properties;
+    arg.endStructure();
+    return arg;
+}
+
+const QDBusArgument &operator>>(const QDBusArgument &arg, QDBusMenuItemKeys &keys)
+{
+    arg.beginStructure();
+    arg >> keys.id >> keys.properties;
+    arg.endStructure();
+    return arg;
+}
+
+uint QDBusMenuLayoutItem::populate(int id, int depth, const QStringList &propertyNames)
+{
+    qCDebug(qLcMenu) << id << "depth" << depth << propertyNames;
+    m_id = id;
+    if (id == 0) {
+        m_properties.insert(QLatin1String("children-display"), QLatin1String("submenu"));
+        Q_FOREACH (const QDBusPlatformMenu *menu, QDBusPlatformMenu::topLevelMenus()) {
+            if (menu)
+                Q_FOREACH (const QDBusPlatformMenuItem *item, menu->items()) {
+                    QDBusMenuLayoutItem child;
+                    child.populate(item, depth - 1, propertyNames);
+                    m_children << child;
+                }
+        }
+    } else {
+        // TODO insert menu properties (name-value pairs)
+    }
+    QDBusPlatformMenu *menu = QDBusPlatformMenu::byId(id);
+    if (depth != 0 && menu) {
+        Q_FOREACH (QDBusPlatformMenuItem *item, menu->items()) {
+            QDBusMenuLayoutItem child;
+            child.populate(item, depth - 1, propertyNames);
+            m_children << child;
+        }
+    }
+    if (menu)
+        return menu->revision();
+    return 1;
+}
+
+void QDBusMenuLayoutItem::populate(const QDBusPlatformMenuItem *item, int depth, const QStringList &propertyNames)
+{
+    Q_UNUSED(depth)
+    Q_UNUSED(propertyNames)
+    m_id = item->dbusID();
+    QDBusMenuItem proxy(item);
+    m_properties = proxy.m_properties;
+    // TODO populate m_children
+}
+
+const QDBusArgument &operator<<(QDBusArgument &arg, const QDBusMenuLayoutItem &item)
+{
+    arg.beginStructure();
+    arg << item.m_id << item.m_properties;
+    arg.beginArray(qMetaTypeId<QDBusVariant>());
+    foreach (const QDBusMenuLayoutItem& child, item.m_children)
+        arg << QDBusVariant(QVariant::fromValue<QDBusMenuLayoutItem>(child));
+    arg.endArray();
+    arg.endStructure();
+    return arg;
+}
+
+const QDBusArgument &operator>>(const QDBusArgument &arg, QDBusMenuLayoutItem &item)
+{
+    arg.beginStructure();
+    arg >> item.m_id >> item.m_properties;
+    arg.beginArray();
+    while (!arg.atEnd()) {
+        QDBusVariant dbusVariant;
+        arg >> dbusVariant;
+        QDBusArgument childArgument = dbusVariant.variant().value<QDBusArgument>();
+
+        QDBusMenuLayoutItem child;
+        childArgument >> child;
+        item.m_children.append(child);
+    }
+    arg.endArray();
+    arg.endStructure();
+    return arg;
+}
+
+void QDBusMenuItem::registerDBusTypes()
+{
+    qDBusRegisterMetaType<QDBusMenuItem>();
+    qDBusRegisterMetaType<QDBusMenuItemList>();
+    qDBusRegisterMetaType<QDBusMenuItemKeys>();
+    qDBusRegisterMetaType<QDBusMenuItemKeysList>();
+    qDBusRegisterMetaType<QDBusMenuLayoutItem>();
+    qDBusRegisterMetaType<QDBusMenuLayoutItemList>();
+    qDBusRegisterMetaType<QDBusMenuEvent>();
+    qDBusRegisterMetaType<QDBusMenuEventList>();
+}
+
+QDBusMenuItem::QDBusMenuItem(const QDBusPlatformMenuItem *item)
+    : m_id(item->dbusID())
+{
+    if (item->isSeparator()) {
+        m_properties.insert(QLatin1String("type"), QLatin1String("separator"));
+    } else {
+        m_properties.insert(QLatin1String("label"), convertMnemonic(item->text()));
+        if (item->menu())
+            m_properties.insert(QLatin1String("children-display"), QLatin1String("submenu"));
+        m_properties.insert(QLatin1String("enabled"), item->isEnabled());
+        if (item->isCheckable()) {
+            // dbusmenu supports "radio" too, but QPlatformMenuItem doesn't seem to
+            // (QAction would have an exclusive actionGroup)
+            m_properties.insert(QLatin1String("toggle-type"), QLatin1String("checkmark"));
+            m_properties.insert(QLatin1String("toggle-state"), item->isChecked() ? 1 : 0);
+        }
+        /* TODO support shortcuts
+        const QKeySequence &scut = item->shortcut();
+        if (!scut.isEmpty()) {
+            QDBusMenuShortcut shortcut(scut);
+            properties.insert(QLatin1String("shortcut"), QVariant::fromValue(shortcut));
+        }
+        */
+        const QIcon &icon = item->icon();
+        if (!icon.name().isEmpty()) {
+            m_properties.insert(QLatin1String("icon-name"), icon.name());
+        } else if (!icon.isNull()) {
+            QBuffer buf;
+            icon.pixmap(16).save(&buf, "PNG");
+            m_properties.insert(QLatin1String("icon-data"), buf.data());
+        }
+    }
+    if (!item->isVisible())
+        m_properties.insert(QLatin1String("visible"), false);
+}
+
+QDBusMenuItemList QDBusMenuItem::items(const QList<int> &ids, const QStringList &propertyNames)
+{
+    Q_UNUSED(propertyNames)
+    QDBusMenuItemList ret;
+    QList<const QDBusPlatformMenuItem *> items = QDBusPlatformMenuItem::byIds(ids);
+    Q_FOREACH (const QDBusPlatformMenuItem *item, items)
+        ret << QDBusMenuItem(item);
+    return ret;
+}
+
+QString QDBusMenuItem::convertMnemonic(const QString &label)
+{
+    // convert only the first occurrence of ampersand which is not at the end
+    // dbusmenu uses underscore instead of ampersand
+    int idx = label.indexOf(QLatin1Char('&'));
+    if (idx < 0 || idx == label.length() - 1)
+        return label;
+    QString ret(label);
+    ret[idx] = QLatin1Char('_');
+    return ret;
+}
+
+const QDBusArgument &operator<<(QDBusArgument &arg, const QDBusMenuEvent &ev)
+{
+    arg.beginStructure();
+    arg << ev.m_id << ev.m_eventId << ev.m_data << ev.m_timestamp;
+    arg.endStructure();
+    return arg;
+}
+
+const QDBusArgument &operator>>(const QDBusArgument &arg, QDBusMenuEvent &ev)
+{
+    arg.beginStructure();
+    arg >> ev.m_id >> ev.m_eventId >> ev.m_data >> ev.m_timestamp;
+    arg.endStructure();
+    return arg;
+}
+
+#ifndef QT_NO_DEBUG_STREAM
+QDebug operator<<(QDebug d, const QDBusMenuItem &item)
+{
+    QDebugStateSaver saver(d);
+    d.nospace();
+    d << "QDBusMenuItem(id=" << item.m_id << ", properties=" << item.m_properties << ")";
+    return d;
+}
+
+QDebug operator<<(QDebug d, const QDBusMenuLayoutItem &item)
+{
+    QDebugStateSaver saver(d);
+    d.nospace();
+    d << "QDBusMenuLayoutItem(id=" << item.m_id << ", properties=" << item.m_properties << ", " << item.m_children.count() << " children)";
+    return d;
+}
+#endif
+
+QT_END_NAMESPACE