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Files
bot/apps/builder/components/board/graph/Edges/Edge.tsx
2022-01-19 18:54:49 +01:00

101 lines
3.0 KiB
TypeScript

import { Coordinates, useGraph } from 'contexts/GraphContext'
import { useTypebot } from 'contexts/TypebotContext/TypebotContext'
import React, { useEffect, useMemo, useState } from 'react'
import {
getAnchorsPosition,
computeEdgePath,
getEndpointTopOffset,
getSourceEndpointId,
} from 'services/graph'
export type AnchorsPositionProps = {
sourcePosition: Coordinates
targetPosition: Coordinates
sourceType: 'right' | 'left'
totalSegments: number
}
export const Edge = ({ edgeId }: { edgeId: string }) => {
const { typebot } = useTypebot()
const { previewingEdgeId, sourceEndpoints, targetEndpoints, graphPosition } =
useGraph()
const edge = useMemo(
() => typebot?.edges.byId[edgeId],
[edgeId, typebot?.edges.byId]
)
const isPreviewing = previewingEdgeId === edgeId
const [sourceTop, setSourceTop] = useState(
getEndpointTopOffset(
graphPosition,
sourceEndpoints,
getSourceEndpointId(edge)
)
)
const [targetTop, setTargetTop] = useState(
getEndpointTopOffset(graphPosition, targetEndpoints, edge?.to.stepId)
)
useEffect(() => {
const newSourceTop = getEndpointTopOffset(
graphPosition,
sourceEndpoints,
getSourceEndpointId(edge)
)
const sensibilityThreshold = 10
const newSourceTopIsTooClose =
sourceTop < newSourceTop + sensibilityThreshold &&
sourceTop > newSourceTop - sensibilityThreshold
if (newSourceTopIsTooClose) return
setSourceTop(newSourceTop)
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [typebot?.blocks, typebot?.steps, graphPosition, sourceEndpoints])
useEffect(() => {
if (!edge) return
const newTargetTop = getEndpointTopOffset(
graphPosition,
targetEndpoints,
edge?.to.stepId
)
const sensibilityThreshold = 10
const newSourceTopIsTooClose =
targetTop < newTargetTop + sensibilityThreshold &&
targetTop > newTargetTop - sensibilityThreshold
if (newSourceTopIsTooClose) return
setTargetTop(newTargetTop)
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [typebot?.blocks, typebot?.steps, graphPosition, targetEndpoints])
const { sourceBlock, targetBlock } = useMemo(() => {
if (!typebot || !edge?.from.stepId) return {}
const sourceBlock = typebot.blocks.byId[edge.from.blockId]
const targetBlock = typebot.blocks.byId[edge.to.blockId]
return {
sourceBlock,
targetBlock,
}
}, [edge?.from.blockId, edge?.from.stepId, edge?.to.blockId, typebot])
const path = useMemo(() => {
if (!sourceBlock || !targetBlock) return ``
const anchorsPosition = getAnchorsPosition({
sourceBlock,
targetBlock,
sourceTop,
targetTop,
})
return computeEdgePath(anchorsPosition)
}, [sourceBlock, sourceTop, targetBlock, targetTop])
if (sourceTop === 0) return <></>
return (
<path
d={path}
stroke={isPreviewing ? '#1a5fff' : '#718096'}
strokeWidth="2px"
markerEnd={isPreviewing ? 'url(#blue-arrow)' : 'url(#arrow)'}
fill="none"
/>
)
}