Block catalog

All visible nodes live in spec.blocks. Layout places them by id.

Chrome and navigation

Block	Doc
GridViewHeader, GridViewNav, GridViewEntity	Header and navigation
GridViewToolbar, GridViewFilters, GridViewActions	Toolbar, filters, actions

Data presentation

Block	Doc
GridViewTable	Tables
GridViewKpi, GridViewCharts	KPI and charts
GridViewCards, GridViewGallery, GridViewImage	Cards and gallery

Interaction

Block	Doc
GridViewForm	Forms
GridViewOverlay, GridViewTabs	Overlays and tabs
GridViewTemplate, GridViewContent	Template and content

Shared block base

Every block inherits:

class GridViewBlockBase:
    id: str
    type: str
    title: str = ""
    extra: Mapping[str, JsonValue] = field(default_factory=dict)
    style: GridViewStyle = field(default_factory=GridViewStyle)
    lazy: GridViewLazyBlock | None = None

Rare options use documented keys in extra (+ strict_unknown_config when enabled).

Registries

Hosts extend behavior through named ids in the spec:

Registry	Spec field
Cell renderers	GridViewColumn.renderer
Cell editors	GridViewColumn.extra.editor
Form validators	GridViewValidator.kind="custom"
Commit hooks	GridViewTableEdit.commit_callback

Built-in renderers: badge, tag, link, money, progress, date, boolean, image, thumbnail.