import { RESTORE_FOCUS_TIMEOUT } from './constants'

const globalState = {}

export default globalState

// Restore previous active (focused) element
export const restoreActiveElement = () => {
  const x = window.scrollX
  const y = window.scrollY
  globalState.restoreFocusTimeout = setTimeout(() => {
    if (globalState.previousActiveElement && globalState.previousActiveElement.focus) {
      globalState.previousActiveElement.focus()
      globalState.previousActiveElement = null
    }
  }, RESTORE_FOCUS_TIMEOUT) // issues/900
  if (typeof x !== 'undefined' && typeof y !== 'undefined') { // IE doesn't have scrollX/scrollY support
    window.scrollTo(x, y)
  }
}
