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84 changes: 84 additions & 0 deletions
84
front/src/modules/simulationResult/components/ChartHelpers/ChartSynchronizer.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| import { useRef, useEffect } from 'react'; | ||
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| import type { PositionsSpeedTimes, SimulationTrain } from 'reducers/osrdsimulation/types'; | ||
| import { store } from 'Store'; | ||
| import { getOsrdSimulation } from 'reducers/osrdsimulation/selectors'; | ||
| import { debounce } from 'lodash'; | ||
| import { CHART_AXES, LIST_VALUES } from '../simulationResultsConsts'; | ||
| import { interpolateOnTime } from './ChartHelpers'; | ||
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| /* eslint-disable import/prefer-default-export */ | ||
| type PositionValues = PositionsSpeedTimes<Date>; | ||
| type Subscriber = (timePosition: Date, positionValues: PositionValues) => void; | ||
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| export class ChartSynchronizer { | ||
| private subscribers: Map<string, Subscriber>; | ||
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| timePosition: Date; | ||
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| positionValues: PositionValues; | ||
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| constructor() { | ||
| this.subscribers = new Map(); | ||
| this.timePosition = new Date(); | ||
| this.positionValues = {} as PositionValues; | ||
| } | ||
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| subscribe(key: string, newSubscriber: Subscriber) { | ||
| this.subscribers.set(key, newSubscriber); | ||
| } | ||
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| unsubscribe(key: string) { | ||
| this.subscribers.delete(key); | ||
| } | ||
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| computePositionValues = debounce(() => { | ||
| const osrdSimulation = getOsrdSimulation(store.getState()); | ||
| const currentTrainSimulation = osrdSimulation.consolidatedSimulation.find( | ||
| (consolidatedSimulation: SimulationTrain) => | ||
| consolidatedSimulation.id === osrdSimulation.selectedTrainId | ||
| ); | ||
| const positionValues = interpolateOnTime( | ||
| currentTrainSimulation, | ||
| CHART_AXES.SPACE_TIME, | ||
| LIST_VALUES.SPACE_TIME, | ||
| this.timePosition | ||
| ); | ||
| return positionValues; | ||
| }, 10); | ||
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| notifyAll(timePosition: Date) { | ||
| this.timePosition = timePosition; | ||
| this.positionValues = this.computePositionValues() as PositionValues; | ||
| this.subscribers.forEach((sub) => { | ||
| sub(timePosition, this.positionValues); | ||
| }); | ||
| } | ||
| } | ||
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| const hardSynchro = new ChartSynchronizer(); | ||
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| export function useChartSynchronizer( | ||
| subscriber?: Subscriber, | ||
| key?: string, | ||
| dependencies?: unknown[] | ||
| ) { | ||
| const synchronizer = useRef(hardSynchro); | ||
| // create or update subscription | ||
| useEffect(() => { | ||
| console.log('update subscription'); | ||
| if (subscriber && key && dependencies) { | ||
| synchronizer.current.subscribe(key, subscriber); | ||
| return () => { | ||
| console.log('unsubscribe'); | ||
| synchronizer.current.unsubscribe(key); | ||
| }; | ||
| } | ||
| return undefined; | ||
| }, dependencies); | ||
| return { | ||
| timePosition: synchronizer.current.timePosition, | ||
| positionValues: synchronizer.current.positionValues, | ||
| updateTimePosition: synchronizer.current.notifyAll.bind(synchronizer.current), | ||
| }; | ||
| } |
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