合并单元格

codeDiffSpanArr: any[] = []//二维数组，用于存放单元格合并规则
    // position: number= 0//用于存储相同项的开始index
    codeDiffRowspan(colIndex: number, colName: string) {
        console.log("rowspan()被调用：" + colName)
        this.codeDiffSpanArr[colIndex] = []
        let position = 0;
        this.codeDiff.forEach((row, index) => {
            if (index === 0) {
                this.codeDiffSpanArr[colIndex].push(1)
                position = 0
            } else {
                if (this.codeDiff[index][colName] === this.codeDiff[index - 1][colName]) { //当前值和上一条相同时
                    this.codeDiffSpanArr[colIndex][position] += 1
                    this.codeDiffSpanArr[colIndex].push(0)
                } else {
                    this.codeDiffSpanArr[colIndex].push(1)
                    position = index
                }
            }
        })
    }

    objectSpanMethod(param: { row: any, column: any, rowIndex: number, columnIndex: number }) {
        console.log("objectSpanMethod()被调用")
        if (isEmpty(param.row))
            return
        for (let i = 0; i < 2; i++) { //第一二列适用合并规则
            if (param.columnIndex === i) {
                const _row = this.codeDiffSpanArr[i][param.rowIndex];
                const _col = _row > 0 ? 1 : 0;
                // console.log('第'+rowIndex+'行','第'+i+'列','rowspan:'+_row,'colspan:'+_col)
                return {
                    rowspan: _row,
                    colspan: _col
                }
            }
        }
        return
    }