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+/****************************************************************************
+**
+** Copyright (C) 2017 Pelagicore AG
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Triton IVI UI.
+**
+** $QT_BEGIN_LICENSE:GPL-QTAS$
+** Commercial License Usage
+** Licensees holding valid commercial Qt Automotive Suite 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 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** 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.
+**
+** $QT_END_LICENSE$
+**
+** SPDX-License-Identifier: GPL-3.0
+**
+****************************************************************************/
+
+import QtQuick 2.0
+import QtQuick.Controls 2.0
+import utils 1.0
+import controls 1.0
+
+/*!
+    \qmltype UIScreen
+    \inqmlmodule utils
+    \inherits Page
+    \brief A base item for all Triton UI screens.
+
+    UIScreen is a QML item that provides Triton UI application screens. UIScreen
+    has a layout with back buttons that provides access to a previous
+    screen.
+
+    \section2 Example Usage
+
+    \qml
+
+    AppUIScreen {
+        id: root
+        title: "Triton Template"
+
+        UIScreen {
+            Content {
+                anchors.centerIn: parent
+                width: Style.hspan(13)
+                height: Style.vspan(24)
+            }
+
+            onBackScreen: root.back()
+        }
+    }
+    \endqml
+
+    For each screen an application has, UIScreen should be used as a base item.
+
+*/
+
+Page {
+    id: root
+    implicitWidth: Style.hspan(24)
+    implicitHeight: Style.vspan(24)
+
+    background: Item {}
+
+    /*!
+         \qmlproperty bool UIScreen::hideBack
+
+         This property holds the visibility status of a back button.
+         If hideBack is set to \c true, the back button is hidden. Default
+         value is \c false.
+    */
+
+    property bool hideBack: false
+
+    /*!
+         \qmlsignal UIScreen::backScreen()
+
+         The signal is emitted when a back button is selected.
+
+    */
+
+    signal backScreen()
+
+
+    Tool {
+        id: backButton
+        anchors.left: parent.left
+        anchors.top: parent.top
+        width: Style.hspan(2)
+        height: Style.vspan(2)
+        visible: !root.hideBack
+        symbol: 'back'
+        onClicked: root.backScreen()
+    }
+
+}
+