DebounceBinding.qml

import QtQuick 2.9

Binding {
    id: root

    property int delay: 500
    property alias value: root._delayedValue

    property alias _actualValue: root.value
    property var _delayedValue

    on_DelayedValueChanged: timer.restart()

    property Timer timer: Timer {
        interval: root.delay
        onTriggered: root._actualValue = root._delayedValue
    }
}