Virtualized Table beta #

Along with evolutionary web development, table component has always been the most popular component in our web apps especially for dashboards, data analysis. For Table V1, with even just 1000 records of data, it can be very annoying when using it, because of the poor performance.

With Virtualized Table, you can render massive chunks of data in a blink of an eye.

Basic usage #

Let's demonstrate the performance of the Virtualized Table by rendering a basic example with 10 columns and 1000 rows.

Auto resizer #

When you do not want to manually pass the width and height properties to the table, you can wrap the table component with the AutoResizer. This will automatically update the width and height for you.

Resize your browser to see how it works.

Customize Cell Renderer #

Of course, you can render the table cell according to your needs. Here's a simple example of how to customize your cell.

Table with selections #

Using customized cell renderer to allow selection for your table.

Inline editing #

Just as we demonstrated with selections above, you can use the same method to enable inline editing.

Table with status #

You can highlight your table content to distinguish between "success, information, warning, danger" and other states.

To customize the appearance of rows, use the row-class-name attribute. For example, every 10th row is highlighted using the bg-blue-200 class, and every 5th row with the bg-red-100 class.

Table with sticky rows #

You can make some rows stick to the top of the table, and that can be very easily achieved by using the fixed-data attribute.

You can dynamically set the sticky row based on scroll events, as shown in this example.

Table with fixed columns #

If you want to have columns stick to the left or right for some reason, you can achieve this by adding special attributes to the table.

You can set the column's attribute fixed to true (representing FixedDir.LEFT) or FixedDir.LEFT or FixedDir.RIGHT

Grouping header #

By customizing your header renderer, you can group your header as shown in this example.

Filter #

Virtualized Table provides custom header renderers for creating customized headers. We can then utilize these to render filters.

Sortable #

You can sort the table with sort state.

Controlled Sort #

You can define multiple sortable columns as needed. Keep in mind that if you define multiple sortable columns, the UI may appear confusing to your users, as it becomes unclear which column is currently being sorted.

Cross hovering #

When dealing with a large list, it's easy to lose track of the current row and column you are visiting. In such cases, using this feature can be very helpful.

Colspan #

The virtualized table doesn't use the built-in table element, so colspan and rowspan behave a bit differently compared to TableV1. However, with a customized row renderer, these features can still be implemented. In this section, we'll demonstrate how to achieve this.

Rowspan #

Since we have covered Colspan, it's worth noting that we also have row span. It's a little bit different from colspan but the idea is basically the same.

Rowspan and Colspan together #

We can combine rowspan and colspan together to meet your business goal!

Tree data #

Virtual Table can also render data in a tree-like structure. By clicking the arrow icon, you can expand or collapse the tree nodes.

Dynamic height rows #

Virtual Table is capable of rendering rows with dynamic heights. If you're working with data and are uncertain about the content size, this feature is ideal for rendering rows that adjust to the content's height. To enable this, pass down the estimated-row-height attribute. The closer the estimated height matches the actual content, the smoother the rendering experience.

Detail view #

Using dynamic height rendering, you can also display a detailed view within the table.

Customized Footer #

Render a customized footer when you want to show a concluding message or information.

Customized Empty Renderer #

Render a customized empty element.

Overlay #

Render an overlay on top of the table when you want to show a loading indicator or something else.

Manual scrolling #

Use the methods provided by Table V2 to scroll manually/programmatically with desired offset/rows.

TableV2 Attributes #

TableV2 Slots #

TableV2 Events #

TableV2 Methods #

Column Attribute #

Typings #

type HeaderClassGetter = (param: {
  columns: Column<any>[]
  headerIndex: number
}) => string

type HeaderPropsGetter = (param: {
  columns: Column<any>[]
  headerIndex: number
}) => Record<string, any>

type HeaderCellPropsGetter = (param: {
  columns: Column<any>[]
  column: Column<any>
  columnIndex: number
  headerIndex: number
  style: CSSProperties
}) => Record<string, any>

type RowClassGetter = (param: {
  columns: Column<any>[]
  rowData: any
  rowIndex: number
}) => string

type RowPropsGetter = (param: {
  columns: Column<any>[]
  rowData: any
  rowIndex: number
}) => Record<string, any>

type CellPropsGetter = (param: {
  column: Column<any>
  columns: Column<any>[]
  columnIndex: number
  cellData: any
  rowData: any
  rowIndex: number
}) => void

type CellRenderProps<T> = {
  cellData: T
  column: Column<T>
  columns: Column<T>[]
  columnIndex: number
  rowData: any
  rowIndex: number
}

type HeaderRenderProps<T> = {
  column: Column<T>
  columns: Column<T>[]
  columnIndex: number
  headerIndex: number
}

type ScrollParams = {
  xAxisScrollDir: 'forward' | 'backward'
  scrollLeft: number
  yAxisScrollDir: 'forward' | 'backward'
  scrollTop: number
}

type CellSlotProps<T> = {
  column: Column<T>
  columns: Column<T>[]
  columnIndex: number
  depth: number
  style: CSSProperties
  rowData: any
  rowIndex: number
  isScrolling: boolean
  expandIconProps?:
    | {
        rowData: any
        rowIndex: number
        onExpand: (expand: boolean) => void
      }
    | undefined
}

type HeaderSlotProps = {
  cells: VNode[]
  columns: Column<any>[]
  headerIndex: number
}

type HeaderCellSlotProps = {
  class: string
  columns: Column<any>[]
  column: Column<any>
  columnIndex: number
  headerIndex: number
  style: CSSProperties
  headerCellProps?: any
  sortBy: SortBy
  sortState?: SortState | undefined
  onColumnSorted: (e: MouseEvent) => void
}

type RowCommonParams = {
  rowData: any
  rowIndex: number
}

type RowEventHandlerParams = {
  rowKey: KeyType
  event: Event
} & RowCommonParams

type RowEventHandler = (params: RowEventHandlerParams) => void
type RowEventHandlers = {
  onClick?: RowEventHandler
  onContextmenu?: RowEventHandler
  onDblclick?: RowEventHandler
  onMouseenter?: RowEventHandler
  onMouseleave?: RowEventHandler
}

type RowsRenderedParams = {
  rowCacheStart: number
  rowCacheEnd: number
  rowVisibleStart: number
  rowVisibleEnd: number
}

type RowSlotProps = {
  columns: Column<any>[]
  rowData: any
  columnIndex: number
  rowIndex: number
  data: any
  key: number | string
  isScrolling?: boolean
  style: CSSProperties
}

type RowExpandParams = {
  expanded: boolean
  rowKey: KeyType
} & RowCommonParams

type Data = {
  [key: KeyType]: any
  children?: Array<any>
}

type FixedData = Data

type KeyType = string | number | symbol

type ColumnSortParam<T> = { column: Column<T>; key: KeyType; order: SortOrder }

enum SortOrder {
  ASC = 'asc',
  DESC = 'desc',
}

type SortBy = { key: KeyType; Order: SortOrder }
type SortState = Record<KeyType, SortOrder>

FAQs #

How do I render a list with a checkbox in the first column? #

Since you are allowed to define your own cell renderer, you can do what the example Customize Cell Renderer did to render checkbox yourself, and maintain the state by yourself.

Why does virtualized table provide less features than TableV1 #

For virtualized table, we intend to provide less feature and let our users implement their own features as needed. Integrating too many features makes the code hard to maintain and for most users the basic features are enough. Some key features were not developed yet. We would love to hear from you. Join Discord to stay tuned.