Method setSelectionBg

src/ink/screen.ts:267–271

(bg: AnsiCode | null)

  private selectionBgCode: AnsiCode | null = null
  private selectionBgCache = new Map<number, number>()
  setSelectionBg(bg: AnsiCode | null): void {
    if (this.selectionBgCode?.code === bg?.code) return
    this.selectionBgCode = bg
    this.selectionBgCache.clear()
  }
  withSelectionBg(baseId: number): number {
    const bg = this.selectionBgCode
    if (bg === null) return this.withInverse(baseId)