| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | * |
| 7 | * @flow |
| 8 | */ |
| 9 | |
| 10 | import type {FiberRoot} from './ReactInternalTypes'; |
| 11 | import type {TransitionTypes} from 'react/src/ReactTransitionType'; |
| 12 | |
| 13 | import {enableViewTransition} from 'shared/ReactFeatureFlags'; |
| 14 | import {includesTransitionLane} from './ReactFiberLane'; |
| 15 | |
| 16 | export function queueTransitionTypes( |
| 17 | root: FiberRoot, |
| 18 | transitionTypes: TransitionTypes, |
| 19 | ): void { |
| 20 | if (enableViewTransition) { |
| 21 | // TODO: We should really store transitionTypes per lane in a LaneMap on |
| 22 | // the root. Then merge it when we commit. We currently assume that all |
| 23 | // Transitions are entangled. |
| 24 | if (includesTransitionLane(root.pendingLanes)) { |
| 25 | let queued = root.transitionTypes; |
| 26 | if (queued === null) { |
| 27 | queued = root.transitionTypes = []; |
| 28 | } |
| 29 | for (let i = 0; i < transitionTypes.length; i++) { |
| 30 | const transitionType = transitionTypes[i]; |
| 31 | if (queued.indexOf(transitionType) === -1) { |
| 32 | queued.push(transitionType); |
| 33 | } |
| 34 | } |
| 35 | } |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | // Store all types while we're entangled with an async Transition. |
| 40 | export let entangledTransitionTypes: null | TransitionTypes = null; |
| 41 | |
| 42 | export function entangleAsyncTransitionTypes( |
| 43 | transitionTypes: TransitionTypes, |
| 44 | ): void { |
| 45 | if (enableViewTransition) { |
| 46 | let queued = entangledTransitionTypes; |
| 47 | if (queued === null) { |
| 48 | queued = entangledTransitionTypes = []; |
| 49 | } |
| 50 | for (let i = 0; i < transitionTypes.length; i++) { |
| 51 | const transitionType = transitionTypes[i]; |
| 52 | if (queued.indexOf(transitionType) === -1) { |
| 53 | queued.push(transitionType); |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | export function clearEntangledAsyncTransitionTypes() { |
| 60 | // Called when all Async Actions are done. |
| 61 | entangledTransitionTypes = null; |
| 62 | } |
| 63 | |
| 64 | export function claimQueuedTransitionTypes( |
| 65 | root: FiberRoot, |
| 66 | ): null | TransitionTypes { |
| 67 | const claimed = root.transitionTypes; |
| 68 | root.transitionTypes = null; |
| 69 | return claimed; |
| 70 | } |