@tldraw/editor/dist-esm/lib/editor/derivations/shapeIdsInCurrentPage.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../../src/lib/editor/derivations/shapeIdsInCurrentPage.ts"],
  "sourcesContent": ["import { computed, isUninitialized, RESET_VALUE, withDiff } from '@tldraw/state'\nimport { IncrementalSetConstructor } from '@tldraw/store'\nimport {\n\tisPageId,\n\tisShape,\n\tisShapeId,\n\tTLPageId,\n\tTLShape,\n\tTLShapeId,\n\tTLStore,\n} from '@tldraw/tlschema'\n\n/**\n * Get whether a shape is in the current page.\n *\n * @param store - The tldraw store.\n * @param pageId - The id of the page to check.\n * @param shape - The the shape to check.\n */\nconst isShapeInPage = (store: TLStore, pageId: TLPageId, shape: TLShape): boolean => {\n\twhile (!isPageId(shape.parentId)) {\n\t\tconst parent = store.get(shape.parentId)\n\t\tif (!parent) return false\n\t\tshape = parent\n\t}\n\n\treturn shape.parentId === pageId\n}\n\n/**\n * A derivation that returns a list of shape ids in the current page.\n *\n * @param store - The tldraw store.\n * @param getCurrentPageId - A function that returns the current page id.\n */\nexport const deriveShapeIdsInCurrentPage = (store: TLStore, getCurrentPageId: () => TLPageId) => {\n\tconst shapesIndex = store.query.ids('shape')\n\tlet lastPageId: null | TLPageId = null\n\tfunction fromScratch() {\n\t\tconst currentPageId = getCurrentPageId()\n\t\tlastPageId = currentPageId\n\t\treturn new Set(\n\t\t\t[...shapesIndex.get()].filter((id) => isShapeInPage(store, currentPageId, store.get(id)!))\n\t\t)\n\t}\n\treturn computed<Set<TLShapeId>>('_shapeIdsInCurrentPage', (prevValue, lastComputedEpoch) => {\n\t\tif (isUninitialized(prevValue)) {\n\t\t\treturn fromScratch()\n\t\t}\n\n\t\tconst currentPageId = getCurrentPageId()\n\n\t\tif (currentPageId !== lastPageId) {\n\t\t\treturn fromScratch()\n\t\t}\n\n\t\tconst diff = store.history.getDiffSince(lastComputedEpoch)\n\n\t\tif (diff === RESET_VALUE) {\n\t\t\treturn fromScratch()\n\t\t}\n\n\t\tconst builder = new IncrementalSetConstructor<TLShapeId>(\n\t\t\tprevValue\n\t\t) as IncrementalSetConstructor<TLShapeId>\n\n\t\tfor (const changes of diff) {\n\t\t\tfor (const record of Object.values(changes.added)) {\n\t\t\t\tif (isShape(record) && isShapeInPage(store, currentPageId, record)) {\n\t\t\t\t\tbuilder.add(record.id)\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfor (const [_from, to] of Object.values(changes.updated)) {\n\t\t\t\tif (isShape(to)) {\n\t\t\t\t\tif (isShapeInPage(store, currentPageId, to)) {\n\t\t\t\t\t\tbuilder.add(to.id)\n\t\t\t\t\t} else {\n\t\t\t\t\t\tbuilder.remove(to.id)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfor (const id of Object.keys(changes.removed)) {\n\t\t\t\tif (isShapeId(id)) {\n\t\t\t\t\tbuilder.remove(id)\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tconst result = builder.get()\n\t\tif (!result) {\n\t\t\treturn prevValue\n\t\t}\n\n\t\treturn withDiff(result.value, result.diff)\n\t})\n}\n"],
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