tldraw/state/commands/move-to-page.ts
2021-07-14 12:39:34 +01:00

151 lines
4.4 KiB
TypeScript

import Command from './command'
import history from '../history'
import { Data } from 'types'
import { uniqueArray } from 'utils'
import tld from 'utils/tld'
import { getShapeUtils } from 'state/shape-utils'
import storage from 'state/storage'
export default function moveToPageCommand(data: Data, newPageId: string): void {
const { currentPageId: oldPageId } = data
const oldPage = tld.getPage(data)
const selectedIds = [...tld.getSelectedIds(data)]
const idsToMove = uniqueArray(
...selectedIds.flatMap((id) => tld.getDocumentBranch(data, id))
)
const oldParentIds = Object.fromEntries(
idsToMove.map((id) => [id, oldPage.shapes[id].parentId])
)
// const selectedParents = uniqueArray(
// ...selectedIds.map((id) => getTopParentId(data, id))
// )
history.execute(
data,
new Command({
name: 'move_to_page',
category: 'canvas',
manualSelection: true,
do(data) {
const fromPageId = oldPageId
const toPageId = newPageId
const fromPage = tld.getPage(data)
// Get all of the selected shapes and their descendents
const shapesToMove = idsToMove.map((id) => fromPage.shapes[id])
shapesToMove.forEach((shape) => {
// If the shape is a parent of a group that isn't selected,
// remove the shape's id from its parent's children.
if (
shape.parentId !== fromPageId &&
!idsToMove.includes(shape.parentId)
) {
const parent = fromPage.shapes[shape.parentId]
getShapeUtils(parent).setProperty(
parent,
'children',
parent.children.filter((id) => id !== shape.id)
)
}
// Delete the shapes from the "from" page
delete fromPage.shapes[shape.id]
})
// Clear the current page state's selected ids
tld.setSelectedIds(data, [])
// Save the "from" page
storage.savePage(data, data.document.id, fromPageId)
// Load the "to" page
storage.loadPage(data, data.document.id, toPageId)
// The page we're moving the shapes to
const toPage = tld.getPage(data)
// Add all of the selected shapes to the "from" page.
shapesToMove.forEach((shape) => {
toPage.shapes[shape.id] = shape
})
// If a shape's parent isn't in the document, re-parent to the page.
shapesToMove.forEach((shape) => {
if (!toPage.shapes[shape.parentId]) {
getShapeUtils(shape).setProperty(shape, 'parentId', toPageId)
}
})
// Select the selected ids on the new page
tld.setSelectedIds(data, [...selectedIds])
// Move to the new page
data.currentPageId = toPageId
tld.setZoomCSS(tld.getPageState(data).camera.zoom)
},
undo(data) {
const fromPageId = newPageId
const toPageId = oldPageId
const fromPage = tld.getPage(data)
const shapesToMove = idsToMove.map((id) => fromPage.shapes[id])
shapesToMove.forEach((shape) => {
if (
shape.parentId !== fromPageId &&
!idsToMove.includes(shape.parentId)
) {
const parent = fromPage.shapes[shape.parentId]
getShapeUtils(parent).setProperty(
parent,
'children',
parent.children.filter((id) => id !== shape.id)
)
}
delete fromPage.shapes[shape.id]
})
tld.setSelectedIds(data, [])
storage.savePage(data, data.document.id, fromPageId)
storage.loadPage(data, data.document.id, toPageId)
const toPage = tld.getPage(data)
shapesToMove.forEach((shape) => {
toPage.shapes[shape.id] = shape
// Move shapes back to their old parent
const parentId = oldParentIds[shape.id]
getShapeUtils(shape).setProperty(shape, 'parentId', parentId)
// And add the shape back to the parent's children
if (parentId !== toPageId) {
const parent = toPage.shapes[parentId]
getShapeUtils(parent).setProperty(parent, 'children', [
...parent.children,
shape.id,
])
}
})
tld.setSelectedIds(data, [...selectedIds])
data.currentPageId = toPageId
tld.setZoomCSS(tld.getPageState(data).camera.zoom)
},
})
)
}