<template>
  <div style="height: 400px">
    <el-auto-resizer>
      <template #default="{ height, width }">
        <el-table-v2
          :columns="columns"
          :data="data"
          :width="width"
          :height="height"
          fixed
        />
      </template>
    </el-auto-resizer>
  </div>
</template>

<script lang="tsx" setup>
import { ref } from 'vue'
import { ElInput } from 'element-plus'

import type { FunctionalComponent } from 'vue'
import type { Column, InputInstance } from 'element-plus'

type SelectionCellProps = {
  value: string
  intermediate?: boolean
  onChange: (value: string) => void
  forwardRef: (el: InputInstance) => void
}

const InputCell: FunctionalComponent<SelectionCellProps> = ({
  value,
  onChange,
  forwardRef,
}) => {
  return (
    <ElInput ref={forwardRef as any} onInput={onChange} modelValue={value} />
  )
}

const generateColumns = (length = 10, prefix = 'column-', props?: any) =>
  Array.from({ length }).map((_, columnIndex) => ({
    ...props,
    key: `${prefix}${columnIndex}`,
    dataKey: `${prefix}${columnIndex}`,
    title: `Column ${columnIndex}`,
    width: 150,
  }))

const generateData = (
  columns: ReturnType<typeof generateColumns>,
  length = 200,
  prefix = 'row-'
) =>
  Array.from({ length }).map((_, rowIndex) => {
    return columns.reduce(
      (rowData, column, columnIndex) => {
        rowData[column.dataKey] = `Row ${rowIndex} - Col ${columnIndex}`
        return rowData
      },
      {
        id: `${prefix}${rowIndex}`,
        editing: false,
        parentId: null,
      }
    )
  })

const columns: Column<any>[] = generateColumns(10)
columns[0] = {
  ...columns[0],
  title: 'Editable Column',
  cellRenderer: ({ rowData, column }) => {
    const onChange = (value: string) => {
      rowData[column.dataKey!] = value
    }
    const onEnterEditMode = () => {
      rowData.editing = true
    }

    const onExitEditMode = () => (rowData.editing = false)
    const input = ref()
    const setRef = (el) => {
      input.value = el
      if (el) {
        el.focus?.()
      }
    }

    return rowData.editing ? (
      <InputCell
        forwardRef={setRef}
        value={rowData[column.dataKey!]}
        onChange={onChange}
        onBlur={onExitEditMode}
        onKeydownEnter={onExitEditMode}
      />
    ) : (
      <div class="table-v2-inline-editing-trigger" onClick={onEnterEditMode}>
        {rowData[column.dataKey!]}
      </div>
    )
  },
}

const data = ref(generateData(columns, 200))
</script>

<style>
.table-v2-inline-editing-trigger {
  border: 1px transparent dotted;
  padding: 4px;
}

.table-v2-inline-editing-trigger:hover {
  border-color: var(--el-color-primary);
}
</style>
