getUnionSchema

getUnionSchema(schema, containers): Schema

Defined in: get-union-schema.ts:40

Return a Schema that contains every named member declared anywhere in the editor’s schema graph that is reachable from a position where text is edited - the root schema merged with the sub-schema of every registered container whose field accepts text blocks, deduped by name. Containers registered in another container’s of count at any depth, so a table cell registered under row under table contributes its members. When two sources declare the same name, the first one wins: the root schema, then top-level containers in registration order, then nested containers one depth level at a time. Nested containers only add names that no shallower source declares.

Useful for rendering a static toolbar whose buttons stay stable across selection moves while still reflecting everything that could plausibly be edited or inserted somewhere.

Containers whose field does NOT accept text blocks (e.g. a table container whose rows field only accepts row objects, or a row container whose cells field only accepts cell objects) are structural: their immediate of types are organizational, not insertable user content. Those structural types are excluded from the union. Their text-block-accepting descendants (e.g. a cell that contains a content field of {type: 'block'}) still contribute when they are registered, either at the top level or nested in the structural container’s of.

Pair with getPathSubSchema (or a path-based intersection across a range) to determine which of the union’s members are applicable at the current selection.

Parameters

schema

Schema

containers

Containers

Returns

Schema