components/PoolToRefresh.qml

import QtQuick 2.15
import QtQuick.Controls 2.15

Item {
    id: root

    signal update()

    property string text: qsTr("Release to update")
    property real sensivity: 50.0
    property alias enabled: connections.enabled

    property bool triggered: false
    property bool trigger: parent.contentY < -1 * sensivity
    property bool atStart: parent.contentY === 0

    Label {
        id: label

        anchors.horizontalCenter: root.horizontalCenter

        visible: root.trigger
        text: root.text
    }

    Connections {
        id: connections

        target: root.parent

        function onContentYChanged() {
            if (root.trigger) {
                root.triggered = true
            }

            if (root.atStart && root.triggered) {
                root.update()
                root.triggered = false
            }
        }
    }
}