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Minimal A2UI Catalog

specification/v0_9/json/catalogs/minimal/README.md

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Minimal A2UI Catalog

This folder contains a minimal A2UI component catalog (minimal_catalog.json) to be used as a test bed for testing new renderer implementations.

Purpose

The basic A2UI catalog is comprehensive and features many components, functions, and layout primitives. Building a new renderer from scratch to support the entire catalog can be overwhelming. The minimal catalog reduces the surface area to a core set of fundamental components:

  • Text: For rendering text strings.
  • Row: For horizontal flex layouts.
  • Column: For vertical flex layouts.
  • Button: For basic interactivity and action dispatching.
  • TextField: For two-way data-bound user inputs.

By targeting this minimal catalog first, new renderer implementations can establish a solid foundation—covering layout algorithms, component nesting, data binding, and event handling—before scaling up to the full basic catalog.

Examples

The examples/ directory contains 5 JSON arrays of layout messages (server_to_client_list format) demonstrating various UI scenarios using only the components defined in this minimal catalog. They serve as basic integration tests.