Function handleCut

src/DataSheet.js:125–132

(e)

  }

  handleCut (e) {
    if (isEmpty(this.state.editing)) {
      e.preventDefault()
      this.handleCopy(e)
      const {start, end} = this.getState()
      this.clearSelectedCells(start, end)
    }
  }

  handleCopy (e) {
    if (isEmpty(this.state.editing)) {