Function createLineCallbacks

packages/session-ui/src/components/file.tsx:424–452

(opts: {
  viewer: Viewer
  normalize?: (range: SelectedLineRange | null) => SelectedLineRange | null | undefined
  onLineSelected?: (range: SelectedLineRange | null) => void
  onLineSelectionEnd?: (range: SelectedLineRange | null) => void
  onLineNumberSelectionEnd?: (selection: SelectedLineRange | null) => void
})

}

function createLineCallbacks(opts: {
  viewer: Viewer
  normalize?: (range: SelectedLineRange | null) => SelectedLineRange | null | undefined
  onLineSelected?: (range: SelectedLineRange | null) => void
  onLineSelectionEnd?: (range: SelectedLineRange | null) => void
  onLineNumberSelectionEnd?: (selection: SelectedLineRange | null) => void
}) {
  const select = (range: SelectedLineRange | null) => {
    if (!opts.normalize) return range
    const next = opts.normalize(range)
    if (next !== undefined) return next
    return range
  }

  return {
    onLineSelected: (range: SelectedLineRange | null) => {
      const next = select(range)
      opts.viewer.lastSelection = next
      opts.onLineSelected?.(next)
    },
    onLineSelectionEnd: (range: SelectedLineRange | null) => {
      const next = select(range)
      opts.viewer.lastSelection = next
      opts.onLineSelectionEnd?.(next)
      if (!opts.viewer.bridge.consume(next)) return
      requestAnimationFrame(() => opts.onLineNumberSelectionEnd?.(next))
    },
  }
}

function useAnnotationRerender<A>(opts: {
  viewer: Viewer