59 lines
1.4 KiB
TypeScript
59 lines
1.4 KiB
TypeScript
import Command from './command'
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import history from '../history'
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import { Data } from 'types'
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import { current } from 'immer'
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import { getPage, getSelectedShapes } from 'utils/utils'
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import { getShapeUtils } from 'lib/shape-utils'
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import * as vec from 'utils/vec'
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export default function changePage(data: Data, pageId: string) {
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const snapshot = getSnapshot(data, pageId)
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history.execute(
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data,
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new Command({
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name: 'change_page',
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category: 'canvas',
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do(data) {
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data.currentPageId = snapshot.nextPageId
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delete data.document.pages[pageId]
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delete data.pageStates[pageId]
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},
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undo(data) {
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data.currentPageId = snapshot.currentPageId
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data.document.pages[pageId] = snapshot.page
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data.pageStates[pageId] = snapshot.pageState
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},
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})
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)
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}
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function getSnapshot(data: Data, pageId: string) {
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const cData = current(data)
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const { currentPageId, document } = cData
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const page = document.pages[pageId]
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const pageState = cData.pageStates[pageId]
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const isCurrent = currentPageId === pageId
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const nextIndex = isCurrent
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? page.childIndex === 0
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? 1
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: page.childIndex - 1
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: document.pages[currentPageId].childIndex
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const nextPageId = isCurrent
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? Object.values(document.pages).find(
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(page) => page.childIndex === nextIndex
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)!.id
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: cData.currentPageId
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return {
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nextPageId,
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isCurrent,
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currentPageId,
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page,
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pageState,
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}
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}
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