ListView cannot be scrolled horizontally

Window {
    id: window
    visible: true
    width: 400
    height: 400
    ListView {
        anchors.fill: parent
        model: 100
        delegate: Text {
            text: "aaaaaaaaa bbbbbbb cccccc ddddd eeeee ffff gggg hhhh iii ggggg" + index
        }
        ScrollBar.vertical: ScrollBar {}
        ScrollBar.horizontal: ScrollBar {}
    }
}