Warning, /plasma-bigscreen/youtube-voice-application/ui/+mediacenter/views/ListTileView.qml is written in an unsupported language. File is not indexed.

 /*
  *  Copyright 2019 Aditya Mehra <aix.m@outlook.com>
  *  Copyright 2019 Marco Martin <mart@kde.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  2.010-1301, USA.
  */
 
 import QtQuick 2.12
 import QtQuick.Layouts 1.4
 import QtQuick.Window 2.2
 import QtQuick.Controls 2.4 as Controls
 import QtGraphicalEffects 1.12
 
 import org.kde.plasma.core 2.0 as PlasmaCore
 import org.kde.plasma.components 3.0 as PlasmaComponents
 import org.kde.kirigami 2.5 as Kirigami
 
 FocusScope {
     id: root
     signal activated
     property string title
     property alias view: view
     property alias delegate: view.delegate
     property alias model: view.model
     property alias currentIndex: view.currentIndex
     property alias currentItem: view.currentItem
     Layout.fillWidth: true
     
     implicitHeight: view.implicitHeight + header.implicitHeight
     property int columns: parent.width >= 1500 ? Math.max(3, Math.floor(width / (Kirigami.Units.gridUnit * 14))) : 5
     property alias cellWidth: view.cellWidth
     
     property Item navigationUp
     property Item navigationDown
     
      Kirigami.Heading {
         id: header
         anchors {
             left: parent.left
             right: parent.right
             top: parent.top
         }
         text: title
         layer.enabled: true
         color: "white"
     }
     
     ListView {
         id: view
         anchors {
             left: parent.left
             right: parent.right
             top: header.baseline
             bottom: parent.bottom
             topMargin: Kirigami.Units.largeSpacing*2
             leftMargin: -Kirigami.Units.largeSpacing
         }
         focus: true
 
         z: activeFocus ? 10: 1
         keyNavigationEnabled: true
         //Centering disabled as experiment
         highlightRangeMode: ListView.ApplyRange
 
         highlightFollowsCurrentItem: true
         snapMode: ListView.SnapToItem
         cacheBuffer: width
         implicitHeight: cellWidth + Kirigami.Units.gridUnit * 3
         rightMargin: width-cellWidth*3
         readonly property int cellWidth: parent.width / 6
         preferredHighlightBegin: cellWidth
         preferredHighlightEnd: cellWidth
         displayMarginBeginning: cellWidth
         displayMarginEnd: cellWidth
 
         highlightMoveVelocity: -1
         highlightMoveDuration: Kirigami.Units.longDuration
 
         onContentWidthChanged: if (view.currentIndex === 0) view.contentX = view.originX
 
         onMovementEnded: flickEnded()
         onFlickEnded: currentIndex = indexAt(mapToItem(contentItem, cellWidth, 0).x, 0)
         
         spacing: 0
         orientation: ListView.Horizontal
 
         move: Transition {
             SmoothedAnimation {
                 property: "x"
                 duration: Kirigami.Units.longDuration
             }
         }
 
         KeyNavigation.left: root
         KeyNavigation.right: root
 
         Keys.onDownPressed:  {
             if (!navigationDown) {
                 return;
             }
 
             if (navigationDown instanceof TileView) {
                 navigationDown.currentIndex = Math.min(Math.floor(navigationDown.view.indexAt(navigationDown.view.contentX + cellWidth/2, height/2)) + (view.currentIndex - view.indexAt(view.contentX + cellWidth/2, height/2)), navigationDown.view.count - 1);
 
                 if (navigationDown.currentIndex < 0) {
                     navigationDown.currentIndex = view.currentIndex > 0 ? navigationDown.view.count - 1 : 0
                 }
             }
 
             navigationDown.forceActiveFocus();
         }
 
         Keys.onUpPressed:  {
             if (!navigationUp) {
                 return;
             }
 
             if (navigationUp instanceof TileView) {
                 navigationUp.currentIndex = Math.min(Math.floor(navigationUp.view.indexAt(navigationUp.view.contentX + cellWidth/2, height/2)) + (view.currentIndex - view.indexAt(view.contentX + cellWidth/2, height/2)), navigationUp.view.count - 1);
 
                 if (navigationUp.currentIndex < 0) {
                     navigationUp.currentIndex = view.currentIndex > 0 ? navigationUp.view.count - 1 : 0
                 }
             }
 
             navigationUp.forceActiveFocus();
         }
     }
 }