@tldraw/editor/dist-esm/lib/utils/reorderShapes.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../src/lib/utils/reorderShapes.ts"],
  "sourcesContent": ["import { TLParentId, TLShape, TLShapeId, TLShapePartial } from '@tldraw/tlschema'\nimport { IndexKey, compact, getIndicesBetween, sortByIndex } from '@tldraw/utils'\nimport { Editor } from '../editor/Editor'\n\nexport function getReorderingShapesChanges(\n\teditor: Editor,\n\toperation: 'toBack' | 'toFront' | 'forward' | 'backward',\n\tids: TLShapeId[],\n\topts?: { considerAllShapes?: boolean }\n) {\n\tif (ids.length === 0) return []\n\n\t// From the ids that are moving, collect the parents, their children, and which of those children are moving\n\tconst parents = new Map<TLParentId, { moving: Set<TLShape>; children: TLShape[] }>()\n\n\tfor (const shape of compact(ids.map((id) => editor.getShape(id)))) {\n\t\tconst { parentId } = shape\n\t\tif (!parents.has(parentId)) {\n\t\t\tparents.set(parentId, {\n\t\t\t\tchildren: compact(\n\t\t\t\t\teditor.getSortedChildIdsForParent(parentId).map((id) => editor.getShape(id))\n\t\t\t\t),\n\t\t\t\tmoving: new Set(),\n\t\t\t})\n\t\t}\n\t\tparents.get(parentId)!.moving.add(shape)\n\t}\n\n\tconst changes: TLShapePartial[] = []\n\n\tswitch (operation) {\n\t\tcase 'toBack': {\n\t\t\tparents.forEach(({ moving, children }) => reorderToBack(moving, children, changes))\n\t\t\tbreak\n\t\t}\n\t\tcase 'toFront': {\n\t\t\tparents.forEach(({ moving, children }) => reorderToFront(moving, children, changes))\n\t\t\tbreak\n\t\t}\n\t\tcase 'forward': {\n\t\t\tparents.forEach(({ moving, children }) =>\n\t\t\t\treorderForward(editor, moving, children, changes, opts)\n\t\t\t)\n\t\t\tbreak\n\t\t}\n\t\tcase 'backward': {\n\t\t\tparents.forEach(({ moving, children }) =>\n\t\t\t\treorderBackward(editor, moving, children, changes, opts)\n\t\t\t)\n\t\t\tbreak\n\t\t}\n\t}\n\n\treturn changes\n}\n\n/**\n * Reorders the moving shapes to the back of the parent's children.\n *\n * @param moving The set of shapes that are moving\n * @param children The parent's children\n * @param changes The changes array to push changes to\n */\nfunction reorderToBack(moving: Set<TLShape>, children: TLShape[], changes: TLShapePartial[]) {\n\tconst len = children.length\n\n\t// If all of the children are moving, there's nothing to do\n\tif (moving.size === len) return\n\n\tlet below: IndexKey | undefined\n\tlet above: IndexKey | undefined\n\n\t// Starting at the bottom of this parent's children...\n\tfor (let i = 0; i < len; i++) {\n\t\tconst shape = children[i]\n\n\t\tif (moving.has(shape)) {\n\t\t\t// If we've found a moving shape before we've found a non-moving shape,\n\t\t\t// then that shape is already at the back; we can remove it from the\n\t\t\t// moving set and mark it as the shape that will be below the moved shapes.\n\t\t\tbelow = shape.index\n\t\t\tmoving.delete(shape)\n\t\t} else {\n\t\t\t// The first non-moving shape we find will be above our moved shapes; we'll\n\t\t\t// put our moving shapes between it and the shape marked as below (if any).\n\t\t\tabove = shape.index\n\t\t\tbreak\n\t\t}\n\t}\n\n\tif (moving.size === 0) {\n\t\t// If our moving set is empty, there's nothing to do; all of our shapes were\n\t\t// already at the back of the parent's children.\n\t\treturn\n\t} else {\n\t\t// Sort the moving shapes by their current index, then apply the new indices\n\t\tconst indices = getIndicesBetween(below, above, moving.size)\n\t\tchanges.push(\n\t\t\t...Array.from(moving.values())\n\t\t\t\t.sort(sortByIndex)\n\t\t\t\t.map((shape, i) => ({ ...shape, index: indices[i] }))\n\t\t)\n\t}\n}\n\n/**\n * Reorders the moving shapes to the front of the parent's children.\n *\n * @param moving The set of shapes that are moving\n * @param children The parent's children\n * @param changes The changes array to push changes to\n */\nfunction reorderToFront(moving: Set<TLShape>, children: TLShape[], changes: TLShapePartial[]) {\n\tconst len = children.length\n\n\t// If all of the children are moving, there's nothing to do\n\tif (moving.size === len) return\n\n\tlet below: IndexKey | undefined\n\tlet above: IndexKey | undefined\n\n\t// Starting at the top of this parent's children...\n\tfor (let i = len - 1; i > -1; i--) {\n\t\tconst shape = children[i]\n\n\t\tif (moving.has(shape)) {\n\t\t\t// If we've found a moving shape before we've found a non-moving shape,\n\t\t\t// then that shape is already at the front; we can remove it from the\n\t\t\t// moving set and mark it as the shape that will be above the moved shapes.\n\t\t\tabove = shape.index\n\t\t\tmoving.delete(shape)\n\t\t} else {\n\t\t\t// The first non-moving shape we find will be below our moved shapes; we'll\n\t\t\t// put our moving shapes between it and the shape marked as above (if any).\n\t\t\tbelow = shape.index\n\t\t\tbreak\n\t\t}\n\t}\n\n\tif (moving.size === 0) {\n\t\t// If our moving set is empty, there's nothing to do; all of our shapes were\n\t\t// already at the front of the parent's children.\n\t\treturn\n\t} else {\n\t\t// Sort the moving shapes by their current index, then apply the new indices\n\t\tconst indices = getIndicesBetween(below, above, moving.size)\n\t\tchanges.push(\n\t\t\t...Array.from(moving.values())\n\t\t\t\t.sort(sortByIndex)\n\t\t\t\t.map((shape, i) => ({ ...shape, index: indices[i] }))\n\t\t)\n\t}\n}\n\nfunction getOverlapChecker(editor: Editor, moving: Set<TLShape>) {\n\tconst movingBounds = compact(\n\t\tArray.from(moving).map((shape) => {\n\t\t\tconst bounds = editor.getShapePageBounds(shape)\n\t\t\tif (!bounds) return null\n\t\t\treturn { shape, bounds }\n\t\t})\n\t)\n\tconst isOverlapping = (child: TLShape) => {\n\t\tconst bounds = editor.getShapePageBounds(child)\n\t\tif (!bounds) return false\n\t\treturn movingBounds.some((other) => {\n\t\t\treturn other.bounds.includes(bounds)\n\t\t})\n\t}\n\n\treturn isOverlapping\n}\n\n/**\n * Reorders the moving shapes forward in the parent's children.\n *\n * @param editor The editor\n * @param moving The set of shapes that are moving\n * @param children The parent's children\n * @param changes The changes array to push changes to\n * @param opts The options\n */\nfunction reorderForward(\n\teditor: Editor,\n\tmoving: Set<TLShape>,\n\tchildren: TLShape[],\n\tchanges: TLShapePartial[],\n\topts?: { considerAllShapes?: boolean }\n) {\n\tconst isOverlapping = getOverlapChecker(editor, moving)\n\n\tconst len = children.length\n\n\t// If all of the children are moving, there's nothing to do\n\tif (moving.size === len) return\n\n\tlet state = { name: 'skipping' } as\n\t\t| { name: 'skipping' }\n\t\t| { name: 'selecting'; selectIndex: number }\n\n\t// Starting at the bottom of this parent's children...\n\tfor (let i = 0; i < len; i++) {\n\t\tconst isMoving = moving.has(children[i])\n\n\t\tswitch (state.name) {\n\t\t\tcase 'skipping': {\n\t\t\t\tif (!isMoving) continue\n\t\t\t\t// If we find a moving shape while skipping, start selecting\n\t\t\t\tstate = { name: 'selecting', selectIndex: i }\n\t\t\t\tbreak\n\t\t\t}\n\t\t\tcase 'selecting': {\n\t\t\t\tif (isMoving) continue\n\t\t\t\tif (!opts?.considerAllShapes && !isOverlapping(children[i])) continue\n\t\t\t\t// if we find a non-moving and overlapping shape while selecting, move all selected\n\t\t\t\t// shapes in front of the not moving shape; and start skipping\n\t\t\t\tconst { selectIndex } = state\n\t\t\t\tgetIndicesBetween(children[i].index, children[i + 1]?.index, i - selectIndex).forEach(\n\t\t\t\t\t(index, k) => {\n\t\t\t\t\t\tconst child = children[selectIndex + k]\n\t\t\t\t\t\t// If the shape is not moving (therefore also not overlapping), skip it\n\t\t\t\t\t\tif (!moving.has(child)) return\n\t\t\t\t\t\tchanges.push({ ...child, index })\n\t\t\t\t\t}\n\t\t\t\t)\n\t\t\t\tstate = { name: 'skipping' }\n\t\t\t\tbreak\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * Reorders the moving shapes backward in the parent's children.\n *\n * @param editor The editor\n * @param moving The set of shapes that are moving\n * @param children The parent's children\n * @param changes The changes array to push changes to\n * @param opts The options\n */\nfunction reorderBackward(\n\teditor: Editor,\n\tmoving: Set<TLShape>,\n\tchildren: TLShape[],\n\tchanges: TLShapePartial[],\n\topts?: { considerAllShapes?: boolean }\n) {\n\tconst isOverlapping = getOverlapChecker(editor, moving)\n\n\tconst len = children.length\n\n\tif (moving.size === len) return\n\n\tlet state = { name: 'skipping' } as\n\t\t| { name: 'skipping' }\n\t\t| { name: 'selecting'; selectIndex: number }\n\n\t// Starting at the top of this parent's children...\n\tfor (let i = len - 1; i > -1; i--) {\n\t\tconst isMoving = moving.has(children[i])\n\n\t\tswitch (state.name) {\n\t\t\tcase 'skipping': {\n\t\t\t\tif (!isMoving) continue\n\t\t\t\t// If we find a moving shape while skipping, start selecting\n\t\t\t\tstate = { name: 'selecting', selectIndex: i }\n\t\t\t\tbreak\n\t\t\t}\n\t\t\tcase 'selecting': {\n\t\t\t\tif (isMoving) continue\n\t\t\t\tif (!opts?.considerAllShapes && !isOverlapping(children[i])) continue\n\t\t\t\t// if we find a non-moving and overlapping shape while selecting, move all selected\n\t\t\t\t// shapes in behind of the not moving shape; and start skipping\n\t\t\t\tgetIndicesBetween(children[i - 1]?.index, children[i].index, state.selectIndex - i).forEach(\n\t\t\t\t\t(index, k) => {\n\t\t\t\t\t\tconst child = children[i + k + 1]\n\t\t\t\t\t\t// If the shape is not moving (therefore also not overlapping), skip it\n\t\t\t\t\t\tif (!moving.has(child)) return\n\t\t\t\t\t\tchanges.push({ ...child, index })\n\t\t\t\t\t}\n\t\t\t\t)\n\t\t\t\tstate = { name: 'skipping' }\n\t\t\t\tbreak\n\t\t\t}\n\t\t}\n\t}\n}\n"],
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