// back up of redo and undo methods

在computed 属性下的 redo 和undo
  computed: {
    rows(): any {
      if (!isUpdateInfos) {
        isUpdateInfos = true;
        return this.infos;
      }
      // undo的时候 给this.infos 从新赋值之后 所有user input 都感知不到。
      for (const row of this.infos) {
        for (const cellKey in row.cells) {
          if (row.cells[cellKey].cellId === this.selectedCell) {
            row.cells.splice(Number(cellKey), 1, {
              cellId: this.selectedCell,
              title: this.inputTitle,
              colspan: this.inputColspan,
              height: this.inputHeight,
              textAlign: this.textAlign,
              fontSize: this.fontSize,
              fontStyle: this.fontStyle,
            });
          }
        }
      }
      // will not add to recordHistory if this.info is update by redo/undo button
      if (
        isundoOrRedoClick === false &&
        this.recordHistory[this.recordHistory.length - 1] !==
          JSON.stringify(this.infos)
      ) {
        this.recordHistory.push(JSON.stringify(this.infos));
      } else {
        isundoOrRedoClick = false;
      }
      return this.infos;
    },
  },


  undoHandler(): void {
      if (undoRodoPointer === -1) {
        undoRodoPointer = this.recordHistory.length - 1;
      }
      // this is to avoid JSON error on console log
      if (undoRodoPointer === 0) {
        return;
      }
      this.infos = JSON.parse(this.recordHistory[(undoRodoPointer -= 1)]);
      isundoOrRedoClick = true;
      isUpdateInfos = false;
    },
  redoHandler() {
      if (undoRodoPointer === -1) {
        undoRodoPointer = this.recordHistory.length - 1;
      }
      // this is to avoid JSON error on console log

      if (undoRodoPointer === this.recordHistory.length - 1) {
        return;
      }
      this.infos = JSON.parse(this.recordHistory[(undoRodoPointer += 1)]);
      isundoOrRedoClick = true;
      isUpdateInfos = false;
    },
    //-----------------------------------------------------------------------------  importdata函数备份-----------------------------------------
     importData() {
      const addOrderTitle = () => {
        let foundMatchedString = false;
        for (const row of this.infos) {
          for (const cell of row.cells) {
            for (const dataKey in data) {
              if (dataKey === cell.title) {
                foundMatchedString = true;
                cell.title = this.data[dataKey];
              }
            }
          }
        }
        return foundMatchedString;
      };
      const addBanCaiHeader = (board: any) => {
        for (const row of this.infos) {
          for (const cell of row.cells) {
            if (board.hasOwnProperty(cell.title)) {
              cell.title = board[cell.title];
            }
          }
        }
      };
      const addBanCaiBody = (board: any) => {
        const banCaiRowsHolder = [];
        let index = 0;
        for (const orderInfoDetails of board.boardInfos) {
          const banCaiCellsHolder = [];
          for (const eachDetail of Object.keys(orderInfoDetails)) {
            // eachDetail === 每一条板材的信息
            for (const row of this.infos) {
              for (const cell of row.cells) {
                if (eachDetail === cell.title) {
                  index = this.infos.indexOf(row);
                  banCaiCellsHolder.push({
                    cellId: (cellId += 1),
                    title: orderInfoDetails[eachDetail],
                    colspan: cell.colspan,
                    height: 30,
                    textAlign: 'center',
                    fontSize: 16,
                    fontStyle: 'normal',
                  });
                }
              }
            }
          }
          banCaiRowsHolder.push({
            rowId: (rowId += 1),
            rowTitle: rowId.toString(),
            cells: banCaiCellsHolder,
          });
        }

        for (const banCaiRow of banCaiRowsHolder) {
          if (banCaiRow.cells.length !== 0) {
            this.infos.splice(
              index + 1 + banCaiRowsHolder.indexOf(banCaiRow),
              0,
              banCaiRow,
            );
          }
        }
        if (index) {
          this.infos.splice(index, 1); // 删除matched 的字段
        }
      };
      const copyBanCaiHeader = () => {
        const matchedRowIndexHolder = [];
        const boardInfosKeysHolder = [];
        for (const boardHeaderKey of Object.keys(data.boards[0])) {
          if (boardInfosKeysHolder.indexOf(boardHeaderKey) === -1) {
            boardInfosKeysHolder.push(boardHeaderKey);
          }
        }
        for (const boardHeaderKey of Object.keys(
          data.boards[0].boardInfos[0],
        )) {
          if (boardInfosKeysHolder.indexOf(boardHeaderKey) === -1) {
            boardInfosKeysHolder.push(boardHeaderKey);
          }
        }
        for (const row of this.infos) {
          for (const cell of row.cells) {
            if (
              boardInfosKeysHolder.indexOf(cell.title) !== -1 ||
              boardInfosKeysHolder.indexOf(cell.title.toString().slice(3)) !==
                -1
            ) {
              if (
                matchedRowIndexHolder.indexOf(this.infos.indexOf(row)) === -1
              ) {
                matchedRowIndexHolder.push(this.infos.indexOf(row));
              }
              break;
            }
          }
        }

        const matchedRowHolder = [];

        for (
          let index = 0;
          index <= matchedRowIndexHolder[matchedRowIndexHolder.length - 1];
          index += 1
        ) {
          if (
            index >= matchedRowIndexHolder[0] &&
            index <= matchedRowIndexHolder[matchedRowIndexHolder.length - 1]
          ) {
            const matchedRow = JSON.parse(JSON.stringify(this.infos[index]));
            matchedRow.rowId = ++rowId;
            for (const cell of matchedRow.cells) {
              cell.cellId = ++cellId;
            }
            matchedRowHolder.push(matchedRow);
          }
        }
        return matchedRowHolder;
      };
      const pasteBanCaiHeader = (
        items: Array<{
          rowId: number;
          rowTitle: string;
          cells: Array<{
            cellId: number;
            title: string;
            colspan: number;
            height: number;
            textAlign: string;
            fontSize: number;
            fontStyle: string;
          }>;
        }>,
      ) => {
        for (const item of items) {
          for (const row of this.infos) {
            if (row.cells.length === 0) {
              this.infos.splice(this.infos.indexOf(row), 1, item);
              break;
            }
          }
        }
      };
      const addSubTotal = (
        boardInfos: Array<{
          houseName: string;
          closetName: string;
          boardNo: string;
          boardName: string;
          length: number;
          width: number;
          thickness: number;
          quantity: number;
          area: number;
          mutation: string;
          shape: string;
          direction: string;
          stripe: string;
          boardAddOn: string;
        }>,
      ) => {
        let amountHolder = 0;

        for (const row of this.infos) {
          for (const cell of row.cells) {
            if (cell.title === 'subquantity') {
              for (const eachBoardInfo of boardInfos) {
                for (const detail in eachBoardInfo) {
                  if (detail === cell.title.slice(3)) {
                    amountHolder += eachBoardInfo[detail];
                  }
                }
              }
              cell.title = amountHolder.toString();
            }
          }
        }
      };
      if (addOrderTitle()) {
        addOrderTitle();
        for (const board of data.boards) {
          const x = copyBanCaiHeader(); // 复制板材表头备用
          addBanCaiHeader(board); // 添加板材表头
          addBanCaiBody(board); // 添加板材表身
          addSubTotal(board.boardInfos); // 添加 小计
          // 添加 板材内的每一条信息
          if (data.boards.indexOf(board) !== data.boards.length - 1) {
            pasteBanCaiHeader(x);
          }
        }
      } else {
        alert('没有找到匹配的orderTitle 字段');
      }
    },