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ARC 2.0.0-beta.28 · AUP Web-only widget

frame

AUP Web-only widget `frame`: purpose, boundaries, surfaces, fallback, and evidence.

AUP Web-only widget — not a cross-device primitive; not a Web Device layout component.

The name is registered in AUP_WIDGETS (packages/aup/src/aup-types.ts). It can be accepted by structure verification and implemented by a Web runtime (or native target where noted). It is not one of the 18 cross-device AUP_PRIMITIVES, does not enter DeviceCaps.primitives via fillPrimitives, and is not a Web Device theme/site layout component (for example content-card or page-breadcrumb).

Purpose

Sandboxed iframe / embed isolation for page fragments. Interactive sessions may enable a same-origin capability bridge; document embeds stay link/iframe constrained.

Boundaries

  • Do not document this type as a portable primitive.
  • Do not mix it with Web Device layout-component reference pages under widgets/.
  • A parser-accepted name is not a portability or product-readiness claim.

Author entry

AUP type: "frame"; Markdown ::embed may compile toward frame-shaped nodes on the document target.

Surfaces

Interactive Web + document partial renderer. Trust boundaries apply.

Fallback

Rejected/unknown embed URLs degrade to plain links on the document path.

Evidence

SourcePath
Registrationpackages/aup/src/aup-types.ts
Interactive rendererproviders/runtime/ui/src/web-page/renderers/frame.ts
Document rendererproviders/runtime/web-device/src/renderer/primitives/frame.ts; RENDERERS; content-embed.ts
Matrixcapability-matrix.md §2 frame — verified #290
Related docsframes-bridges-embedded-surfaces; web-device/markdown-embeds

Paths are relative to the Arc repository checkout used for this documentation baseline.

Sample

Public document-target behavior is covered by existing verified docs (see Related). This page is the AUP widget taxonomy entry; do not treat Showcase as a live embed on www.arcblock.io.

Related