kopia lustrzana https://github.com/Tldraw/Tldraw
291 wiersze
8.3 KiB
TypeScript
291 wiersze
8.3 KiB
TypeScript
import { Utils } from '@tldraw/core'
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import { Vec } from '@tldraw/vec'
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import { TLDR } from '~state/TLDR'
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import type { PagePartial, TldrawCommand, TDShape, TDBinding, TDAsset } from '~types'
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import type { TldrawApp } from '../../internal'
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export function insertContent(
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app: TldrawApp,
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content: { shapes: TDShape[]; bindings?: TDBinding[]; assets?: TDAsset[] },
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opts = {} as { point?: number[]; select?: boolean; overwrite?: boolean }
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): TldrawCommand {
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const { currentPageId } = app
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const { point, select, overwrite } = opts
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const page = app.document.pages[currentPageId]
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const before: PagePartial = {
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shapes: {},
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bindings: {},
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}
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const afterAssets: Record<string, TDAsset> = {}
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const after: PagePartial = {
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shapes: {},
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bindings: {},
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}
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if (overwrite) {
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// Map shapes and bindings onto new IDs to avoid overwriting existing content.
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for (const shape of content.shapes) {
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before.shapes[shape.id] = page.shapes[shape.id]
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after.shapes[shape.id] = shape
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}
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if (content.bindings) {
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for (const binding of content.bindings) {
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before.bindings[binding.id] = page.bindings[binding.id]
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after.bindings[binding.id] = binding
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}
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}
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if (content.assets) {
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for (const asset of content.assets) {
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afterAssets[asset.id] = asset
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}
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}
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} else {
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// Map shapes and bindings onto new IDs to avoid overwriting existing content.
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const oldToNewIds: Record<string, string> = {}
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// The index of the new shape
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let nextIndex = TLDR.getTopChildIndex(app.state, currentPageId)
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const shapesToInsert: TDShape[] = content.shapes
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.sort((a, b) => a.childIndex - b.childIndex)
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.map((shape) => {
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const newShapeId = Utils.uniqueId()
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oldToNewIds[shape.id] = newShapeId
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// The redo should include a clone of the new shape
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return {
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...Utils.deepClone(shape),
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id: newShapeId,
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}
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})
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const visited = new Set<string>()
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// Iterate through the list, starting from the front
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while (shapesToInsert.length > 0) {
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const shape = shapesToInsert.shift()
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if (!shape) break
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visited.add(shape.id)
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if (shape.parentId === 'currentPageId') {
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shape.parentId = currentPageId
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shape.childIndex = nextIndex++
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} else {
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// The shape had another shape as its parent.
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// Re-assign the shape's parentId to the new id
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shape.parentId = oldToNewIds[shape.parentId]
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// Has that parent been added yet to the after object?
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const parent = after.shapes[shape.parentId]
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if (!parent) {
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if (visited.has(shape.id)) {
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// If we've already visited this shape, then that means
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// its parent was not among the shapes to insert. Set it
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// to be a child of the current page instead.
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shape.parentId = 'currentPageId'
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}
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// If the parent hasn't been added yet, push this shape
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// to back of the queue; we'll try and add it again later
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shapesToInsert.push(shape)
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continue
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}
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// If we've found the parent, add this shape's id to its children
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parent.children!.push(shape.id)
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}
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// If the inserting shape has its own children, set the children to
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// an empty array; we'll add them later, as just shown above
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if (shape.children) {
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shape.children = []
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}
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// The undo should remove the inserted shape
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before.shapes[shape.id] = undefined
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// The redo should include the inserted shape
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after.shapes[shape.id] = shape
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}
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Object.values(after.shapes).forEach((shape) => {
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// If the shape used to have children, but no longer does have children,
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// then delete the shape. This prevents inserting groups without children.
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if (shape!.children && shape!.children.length === 0) {
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delete before.shapes[shape!.id!]
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delete after.shapes[shape!.id!]
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}
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})
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// Insert bindings
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if (content.bindings) {
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content.bindings.forEach((binding) => {
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const newBindingId = Utils.uniqueId()
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oldToNewIds[binding.id] = newBindingId
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const toId = oldToNewIds[binding.toId]
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const fromId = oldToNewIds[binding.fromId]
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// If the binding is "to" or "from" a shape that hasn't been inserted,
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// we'll need to skip the binding and remove it from any shape that
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// references it.
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if (!toId || !fromId) {
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if (fromId) {
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const handles = after.shapes[fromId]!.handles
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if (handles) {
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Object.values(handles).forEach((handle) => {
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if (handle!.bindingId === binding.id) {
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handle!.bindingId = undefined
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}
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})
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}
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}
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if (toId) {
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const handles = after.shapes[toId]!.handles
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if (handles) {
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Object.values(handles).forEach((handle) => {
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if (handle!.bindingId === binding.id) {
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handle!.bindingId = undefined
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}
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})
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}
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}
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return
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}
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// Update the shape's to and from references to the new bindingid
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const fromHandles = after.shapes[fromId]!.handles
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if (fromHandles) {
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Object.values(fromHandles).forEach((handle) => {
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if (handle!.bindingId === binding.id) {
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handle!.bindingId = newBindingId
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}
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})
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}
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const toHandles = after.shapes[toId]!.handles
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if (toHandles) {
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Object.values(after.shapes[toId]!.handles!).forEach((handle) => {
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if (handle!.bindingId === binding.id) {
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handle!.bindingId = newBindingId
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}
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})
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}
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const newBinding = {
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...Utils.deepClone(binding),
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id: newBindingId,
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toId,
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fromId,
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}
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// The undo should remove the inserted binding
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before.bindings[newBinding.id] = undefined
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// The redo should include the inserted binding
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after.bindings[newBinding.id] = newBinding
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})
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}
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// Now move the shapes
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const shapesToMove = Object.values(after.shapes) as TDShape[]
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if (shapesToMove.length > 0) {
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if (point) {
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// Move the shapes so that they're centered on the given point
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const commonBounds = Utils.getCommonBounds(
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shapesToMove.map((shape) => TLDR.getBounds(shape))
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)
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const center = Utils.getBoundsCenter(commonBounds)
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shapesToMove.forEach((shape) => {
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if (!shape.point) return
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shape.point = Vec.sub(point, Vec.sub(center, shape.point))
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})
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} else {
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const commonBounds = Utils.getCommonBounds(shapesToMove.map(TLDR.getBounds))
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if (
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!(
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Utils.boundsContain(app.viewport, commonBounds) ||
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Utils.boundsCollide(app.viewport, commonBounds)
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)
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) {
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const center = Vec.toFixed(app.getPagePoint(app.centerPoint))
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const centeredBounds = Utils.centerBounds(commonBounds, center)
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const delta = Vec.sub(
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Utils.getBoundsCenter(centeredBounds),
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Utils.getBoundsCenter(commonBounds)
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)
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shapesToMove.forEach((shape) => {
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shape.point = Vec.toFixed(Vec.add(shape.point, delta))
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})
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}
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}
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}
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if (content.assets) {
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for (const asset of content.assets) {
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afterAssets[asset.id] = asset
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}
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}
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}
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const elm = document.createElement('textarea')
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Object.values(after.shapes as Record<string, TDShape>).forEach((shape) => {
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if ('text' in shape) {
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elm.innerHTML = shape.text
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shape.text = elm.value
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}
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if ('label' in shape) {
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elm.innerHTML = shape.label!
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shape.label = elm.value
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}
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})
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elm.remove()
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return {
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id: 'insert',
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before: {
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document: {
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pages: {
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[currentPageId]: before,
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},
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pageStates: {
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[currentPageId]: { selectedIds: [...app.selectedIds] },
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},
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},
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},
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after: {
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document: {
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pages: {
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[currentPageId]: after,
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},
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assets: afterAssets,
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pageStates: {
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[currentPageId]: {
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selectedIds: select ? Object.keys(after.shapes) : [...app.selectedIds],
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},
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},
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},
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},
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}
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}
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