const getChangeHeader = () => getClassNameElementsArray('change-header')[0]

const getFileElements = () => getClassNameElementsArray('file')

const getSelectedFile = () => getClassNameElementsArray('file-selected')[0]

const changeFile = e => {
    const up = e.wheelDelta ? e.wheelDelta > 0 : e.deltaY < 0
    const selectedFile = getSelectedFile()
    const fileElements = getFileElements()
    const index = fileElements.indexOf(selectedFile)
    const nextElement =
        (up && index > 0) ? fileElements[index - 1] :
        (!up && index < (fileElements.length - 1)) ? fileElements[index + 1] :
        null
    nextElement?.firstElementChild?.focus()
    nextElement?.firstElementChild?.click()
}

addFix(() => {
    const header = getChangeHeader()
    console.log({ header })
    header.onwheel = changeFile
})