tldraw/dist-esm/lib/tools/SelectTool/DragAndDropManager.mjs.map

A tiny little drawing editor.

{
  "version": 3,
  "sources": ["../../../../src/lib/tools/SelectTool/DragAndDropManager.ts"],
  "sourcesContent": ["import { Editor, TLShape, TLShapeId, Vec, bind, compact } from '@tldraw/editor'\nimport { getOccludedChildren } from './selectHelpers'\n\nconst INITIAL_POINTER_LAG_DURATION = 20\nconst FAST_POINTER_LAG_DURATION = 100\n\n/** @public */\nexport class DragAndDropManager {\n\tconstructor(public editor: Editor) {\n\t\teditor.disposables.add(this.dispose)\n\t}\n\n\tprevDroppingShapeId: TLShapeId | null = null\n\n\tdroppingNodeTimer: number | null = null\n\n\tfirst = true\n\n\tupdateDroppingNode(movingShapes: TLShape[], cb: () => void) {\n\t\tif (this.first) {\n\t\t\tthis.editor.setHintingShapes(\n\t\t\t\tmovingShapes\n\t\t\t\t\t.map((s) => this.editor.findShapeAncestor(s, (v) => v.type !== 'group'))\n\t\t\t\t\t.filter((s) => s) as TLShape[]\n\t\t\t)\n\n\t\t\tthis.prevDroppingShapeId =\n\t\t\t\tthis.editor.getDroppingOverShape(this.editor.inputs.originPagePoint, movingShapes)?.id ??\n\t\t\t\tnull\n\t\t\tthis.first = false\n\t\t}\n\n\t\tif (this.droppingNodeTimer === null) {\n\t\t\tthis.setDragTimer(movingShapes, INITIAL_POINTER_LAG_DURATION, cb)\n\t\t} else if (this.editor.inputs.pointerVelocity.len() > 0.5) {\n\t\t\tclearTimeout(this.droppingNodeTimer)\n\t\t\tthis.setDragTimer(movingShapes, FAST_POINTER_LAG_DURATION, cb)\n\t\t}\n\t}\n\n\tprivate setDragTimer(movingShapes: TLShape[], duration: number, cb: () => void) {\n\t\tthis.droppingNodeTimer = this.editor.timers.setTimeout(() => {\n\t\t\tthis.editor.run(() => {\n\t\t\t\tthis.handleDrag(this.editor.inputs.currentPagePoint, movingShapes, cb)\n\t\t\t})\n\t\t\tthis.droppingNodeTimer = null\n\t\t}, duration)\n\t}\n\n\tprivate handleDrag(point: Vec, movingShapes: TLShape[], cb?: () => void) {\n\t\tmovingShapes = compact(movingShapes.map((shape) => this.editor.getShape(shape.id)))\n\n\t\tconst nextDroppingShapeId = this.editor.getDroppingOverShape(point, movingShapes)?.id ?? null\n\n\t\t// is the next dropping shape id different than the last one?\n\t\tif (nextDroppingShapeId === this.prevDroppingShapeId) {\n\t\t\tthis.hintParents(movingShapes)\n\t\t\treturn\n\t\t}\n\n\t\t// the old previous one\n\t\tconst { prevDroppingShapeId } = this\n\n\t\tconst prevDroppingShape = prevDroppingShapeId && this.editor.getShape(prevDroppingShapeId)\n\t\tconst nextDroppingShape = nextDroppingShapeId && this.editor.getShape(nextDroppingShapeId)\n\n\t\t// Even if we don't have a next dropping shape id (i.e. if we're dropping\n\t\t// onto the page) set the prev to the current, to avoid repeat calls to\n\t\t// the previous parent's onDragShapesOut\n\n\t\tif (prevDroppingShape) {\n\t\t\tthis.editor.getShapeUtil(prevDroppingShape).onDragShapesOut?.(prevDroppingShape, movingShapes)\n\t\t}\n\n\t\tif (nextDroppingShape) {\n\t\t\tthis.editor\n\t\t\t\t.getShapeUtil(nextDroppingShape)\n\t\t\t\t.onDragShapesOver?.(nextDroppingShape, movingShapes)\n\t\t}\n\n\t\tthis.hintParents(movingShapes)\n\t\tcb?.()\n\n\t\t// next -> curr\n\t\tthis.prevDroppingShapeId = nextDroppingShapeId\n\t}\n\n\thintParents(movingShapes: TLShape[]) {\n\t\t// Group moving shapes by their ancestor\n\t\tconst shapesGroupedByAncestor = new Map<TLShapeId, TLShapeId[]>()\n\t\tfor (const shape of movingShapes) {\n\t\t\tconst ancestor = this.editor.findShapeAncestor(shape, (v) => v.type !== 'group')\n\t\t\tif (!ancestor) continue\n\t\t\tif (!shapesGroupedByAncestor.has(ancestor.id)) {\n\t\t\t\tshapesGroupedByAncestor.set(ancestor.id, [])\n\t\t\t}\n\t\t\tshapesGroupedByAncestor.get(ancestor.id)!.push(shape.id)\n\t\t}\n\n\t\t// Only hint an ancestor if some shapes will drop into it on pointer up\n\t\tconst hintingShapes = []\n\t\tfor (const [ancestorId, shapeIds] of shapesGroupedByAncestor) {\n\t\t\tconst ancestor = this.editor.getShape(ancestorId)\n\t\t\tif (!ancestor) continue\n\t\t\t// If all of the ancestor's children would be occluded, then don't hint it\n\t\t\t// 1. get the number of fully occluded children\n\t\t\t// 2. if that number is less than the number of moving shapes, hint the ancestor\n\t\t\tif (getOccludedChildren(this.editor, ancestor).length < shapeIds.length) {\n\t\t\t\thintingShapes.push(ancestor.id)\n\t\t\t}\n\t\t}\n\n\t\tthis.editor.setHintingShapes(hintingShapes)\n\t}\n\n\tdropShapes(shapes: TLShape[]) {\n\t\tconst { prevDroppingShapeId } = this\n\n\t\tthis.handleDrag(this.editor.inputs.currentPagePoint, shapes)\n\n\t\tif (prevDroppingShapeId) {\n\t\t\tconst shape = this.editor.getShape(prevDroppingShapeId)\n\t\t\tif (!shape) return\n\t\t\tthis.editor.getShapeUtil(shape).onDropShapesOver?.(shape, shapes)\n\t\t}\n\t}\n\n\tclear() {\n\t\tthis.prevDroppingShapeId = null\n\n\t\tif (this.droppingNodeTimer !== null) {\n\t\t\tclearTimeout(this.droppingNodeTimer)\n\t\t}\n\n\t\tthis.droppingNodeTimer = null\n\t\tthis.editor.setHintingShapes([])\n\t\tthis.first = true\n\t}\n\n\t@bind\n\tdispose() {\n\t\tthis.clear()\n\t}\n}\n"],
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