Class KeyFinder

constructor

• new KeyFinder(context, key): KeyFinder

• constructor for fast key based row access

  Parameters

  • context: IExceptionContext

    context to use

  • key: ((rowIndex) => string)

    key function

    • • (rowIndex): string

      • Parameters

        • rowIndex: number

        Returns string

  Returns KeyFinder

Readonly context

Readonly key

exceptionHeightOf

• exceptionHeightOf(index, returnDefault?): null | number

• see heightOf but ignores padding and optional null in case of default height

  Parameters

  • index: number

    row index

  • Optional returnDefault: boolean

    return null if default height

  Returns null | number
• exceptionHeightOf(index, returnDefault): number

• Parameters

  • index: number

  • returnDefault: true

  Returns number

heightOf

• heightOf(index): number

• returns the height of the row identified by index

  Parameters

  • index: number

  Returns number

padding

• padding(index): number

• padding of the given index

  Parameters

  • index: number

  Returns number

pos

• pos(index): number

• returns the position of the given index

  Parameters

  • index: number

    index to look for

  Returns number

posByKey

• posByKey(key): {
      index: number;
      pos: number;
  }

• returns the position of the given given or -1 if not found

  Parameters

  • key: string

  Returns {
      index: number;
      pos: number;
  }

  • index: number

  • pos: number

positions

• positions(first, last, offset, callback?): void

• computes the positions and keys for a range of given indices

  Parameters

  • first: number

    first row index

  • last: number

    last row index

  • offset: number

    pos offset for the first row index

  • Optional callback: ((index, key, pos) => void)

    callback for each identified index

    • • (index, key, pos): void

      • Parameters

        • index: number

        • key: string

        • pos: number

        Returns void

  Returns void