embed

# Workspace Embed Load `core` plus the Host and child Unit Skills. The command targets the Host Unit; the embedded child is a read-only Source selected by a ResourceRef. ```bash uvw api show FUniver.createEmbed FEmbed FEmbedHostSurface ICreateEmbedParams IEmbedDescriptor uvw api find embed host surface ``` ## Identity contract - Build a self ResourceRef from the exact stable child `unitId` and its Unit type: `#unit=<source-unit-id>&type=<sheet|doc|slide|base|board>`. - Obtain the Source identity from the caller, an existing Host descriptor, or an already selected identity workflow. A display name, Workspace URL, share link, Node ID, and Resource ID are not substitutes for `unitId`. - Do not add the child to the task Worktree merely so Embed can read it, and do not preload it. The Workspace Provider materializes an authorized child when `loadAsync()` first needs it. - One Host may have sibling Embeds. Do not create a nested Embed graph unless the selected Viewer explicitly supports it. Choose the Host surface and required context from the Host Unit Skill. For a Sheet floating object, provide an explicit drawing placement; a Sheet tab needs no placement: ```js const sourceUnitId = "<source-unit-id>"; const embed = api.createEmbed({ embedId: "<stable-embed-id>", host: { unitId: workbook.getId(), surface: api.Enum.FEmbedHostSurface.SheetTab, }, content: { unitType: api.Enum.UniverInstanceType.UNIVER_DOC, ref: "#unit=" + sourceUnitId + "&type=doc", }, interaction: "interactive", }); const child = await embed.loadAsync(); if (child?.getId?.() !== sourceUnitId) { throw new Error("Embedded child identity mismatch."); } return { embedId: embed.getId(), childId: child.getId(), descriptor: embed.getDescriptor(), }; ``` Verify the exact persisted ResourceRef, loaded child ID/type, and Host anchor in a later read-only `execute`, then follow the Host screenshot and review flow. An inaccessible, missing, malformed, or type-incompatible Source is a load failure; do not fall back to name search or silently replace it. ## Referencing another Unit's data from a Chart When a Chart on a Slide, Doc, or Board should reflect a range in a different Unit, bind the range as a ResourceRef instead of copying its current values. Copied values are a snapshot; a ResourceRef keeps the Chart connected to the Source. The Host and Source are Univer Units in the same Workspace deployment and are addressed by stable `unitId`. Resolve the exact input with: ```bash uvw api show IResourceRefChartDataSourceInput ``` Pass the ref contents (`{ file?, unit, part }`) directly to `newChart(...).setSource(ref)`. For an existing live Chart, use `await chart.setDataSource(ref)`. Wrapping the ref as `{ source: { kind, ref } }` fails normalization with `RESOURCE_REF_INVALID_UNIT`. For a Worktree Host, an authorized Source staged in the same Worktree resolves from that Worktree; otherwise the Workspace reference policy resolves the authorized trunk Source. Do not stage a read-only Source merely to make the reference load. Verify that the stored `dataSource.source.kind` is `resource-ref`, then confirm the exact Source Unit, Sheet/Table selector, and range in a fresh readback. Workspace Viewer and execute runtimes materialize an authorized Source on demand; the Viewer also watches the Source data and refreshes a live Chart when it changes. The screenshot renderer does not currently preload a Source referenced only by a Chart, so that case can render a placeholder there; finish its visual review in the Workspace Viewer.