셀 병합 (Cell Merge)

import * as React from 'react';
import { AXDataGrid, AXDGColumn } from '@axboot/datagrid';
import { useContainerSize } from '../hooks/useContainerSize';
import DataGridContainer from '../components/DataGridContainer';

interface Props {}

interface IListItem {
  id?: string;
  class?: string;
  title?: string;
  writer?: string;
  createAt?: string;
}

const list = Array.from(Array(5)).map((v, i) => ({
  values: {
    id: `ID_${i}`,
    class: `class_${Math.floor(i / 5)}`,
    title: `title_${i}`,
    writer: `writer_${i}`,
    createAt: `2022-09-08`,
  },
}));

function CellMergeExample(props: Props) {
  const [columns, setColumns] = React.useState<AXDGColumn<IListItem>[]>([
    {
      key: 'class',
      label: 'class',
      width: 100,
      align: 'center',
    },
    {
      key: 'id',
      label: 'No',
      width: 100,
    },
    {
      key: 'title',
      label: 'Title',
      width: 300,
      itemRender: ({ values }) => {
        return (
          <>
            {values.writer} / {values.title}
          </>
        );
      },
    },
    {
      key: 'writer',
      label: 'Writer',
      width: 100,
      itemRender: ({ values: values }) => {
        return <>{values.writer} / A</>;
      },
    },
    {
      key: 'createAt',
      label: 'Date-A',
      width: 100,
      align: 'center',
    },
    {
      key: 'createAt',
      label: 'Date-B',
      width: 100,
      align: 'center',
    },
    {
      key: 'createAt',
      label: 'Date-C',
      width: 100,
      align: 'center',
    },
    {
      key: 'createAt',
      label: 'Date-D',
      width: 100,
    },
    {
      key: 'createAt',
      label: 'Date-E',
      width: 100,
    },
  ]);

  const containerRef = React.useRef<HTMLDivElement>(null);
  const { width: containerWidth, height: containerHeight } = useContainerSize(containerRef);

  return (
    <DataGridContainer ref={containerRef}>
      <AXDataGrid<IListItem>
        showLineNumber
        frozenColumnIndex={1}
        width={containerWidth}
        height={containerHeight}
        data={list}
        columns={columns}
        onChangeColumns={(columnIndex, { width, columns }) => {
          console.log('onChangeColumnWidths', columnIndex, width, columns);
          setColumns(columns);
        }}
        cellMergeOptions={{
          columnsMap: {
            0: { mergeBy: 'class' },
            4: { mergeBy: 'class' },
            5: { mergeBy: 'class' },
            6: { mergeBy: 'class' },
          },
        }}
        onClick={item => console.log(item)}
        variant={'vertical-bordered'}
      />
    </DataGridContainer>
  );
}

export default CellMergeExample;

import * as React from 'react';
import './DataGridContainer.css';

interface DataGridContainerProps extends React.HTMLAttributes<HTMLDivElement> {
  children?: React.ReactNode;
}

/**
 * Keeps a DataGrid in a measured, fixed layout box.
 *
 * AXDataGrid's rendered root is absolutely positioned within this relative
 * container. This makes a ResizeObserver measurement authoritative when a
 * surrounding flex or grid layout shrinks as well as when it expands.
 */
const DataGridContainer = React.forwardRef<HTMLDivElement, DataGridContainerProps>(
  ({ className, ...rest }, ref) => (
    <div ref={ref} className={`data-grid-container ${className ?? ''}`.trim()} {...rest} />
  ),
);

DataGridContainer.displayName = 'DataGridContainer';

export default DataGridContainer;

.data-grid-container {
  position: relative;
  width: 100%;
  height: 400px;
  overflow: hidden;
  font-size: 13px;
}

.data-grid-container > .axdg-root {
  position: absolute;
  inset: 0;
}

import * as React from 'react';

export function useContainerSize(ref: React.MutableRefObject<HTMLElement | null>, additionalDeps: unknown[] = []) {
  const [width, setWidth] = React.useState(0);
  const [height, setHeight] = React.useState(0);

  const resizeObserver = React.useRef(
    new ResizeObserver(entries => {
      if (entries.length !== 1) {
        throw new Error('Invalid Container length');
      }

      const [entry] = entries;

      const { width, height } = entry.contentRect;

      setWidth(width);
      setHeight(height);
    }),
  );

  React.useEffect(() => {
    if (!ref.current) return;

    const observer = resizeObserver.current;
    const element = ref.current;

    setWidth(element.clientWidth);
    setHeight(element.clientHeight);
    observer.observe(element);

    return () => {
      observer.unobserve(element);
    };
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [...additionalDeps, ref]);

  return {
    width,
    height,
  };
}