Text alignment tokens

[GarthDB]

The problem

We don't currently include horizontal text-alignment values in Spectrum Tokens.

The proposal

We're considering adding some for cases like this in the table component:

The only potential complication comes from right-to-left and left-to-right language switching. CSS supports logical properties start, center, and end instead of left, center, and right. This allows the alignment to change based on language direction without changing the text-align property.

---
"$schema": https://json-schema.org/draft/2020-12/schema
"$id": https://opensource.adobe.com/spectrum-tokens/schemas/token-types/text-align.json
title: Text align
description: Sets whether text should be aligned `start`, `center`, or `end`
type: object
allOf:
- "$ref": https://opensource.adobe.com/spectrum-tokens/schemas/token-types/token.json
properties:
  "$schema":
    const: https://opensource.adobe.com/spectrum-tokens/schemas/token-types/text-align.json
  value:
    type: string
    enum:
      - start
      - center
      - end
    default: start
  component: {}
  private: {}
  deprecated: {}
  deprecated_comment: {}
  uuid: {}

Alternatives considered

We've considered the more universal left, center, and right values, but we lose out on the logical option benefits mentioned in the proposal.

Questions

What about non-web implementations, would logical options cause issues for text-alignment?

[GarthDB]

we've opted for a more generic alignment token type schema that could be used for vertical, horizontal, or text alignment #840