107 lines
3.1 KiB
TypeScript
107 lines
3.1 KiB
TypeScript
import { useEventListener } from '@chakra-ui/hooks'
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import assert from 'assert'
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import { useGraph, ConnectingIds } from 'contexts/GraphContext'
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import { useTypebot } from 'contexts/TypebotContext/TypebotContext'
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import { colors } from 'libs/theme'
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import React, { useMemo, useState } from 'react'
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import {
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computeConnectingEdgePath,
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computeEdgePathToMouse,
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getEndpointTopOffset,
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} from 'services/graph'
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export const DrawingEdge = () => {
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const {
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graphPosition,
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setConnectingIds,
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connectingIds,
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sourceEndpoints,
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targetEndpoints,
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groupsCoordinates,
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} = useGraph()
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const { createEdge } = useTypebot()
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const [mousePosition, setMousePosition] = useState({ x: 0, y: 0 })
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const sourceGroupCoordinates =
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groupsCoordinates && groupsCoordinates[connectingIds?.source.groupId ?? '']
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const targetGroupCoordinates =
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groupsCoordinates && groupsCoordinates[connectingIds?.target?.groupId ?? '']
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const sourceTop = useMemo(() => {
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if (!connectingIds) return 0
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return getEndpointTopOffset({
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endpoints: sourceEndpoints,
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graphOffsetY: graphPosition.y,
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endpointId: connectingIds.source.itemId ?? connectingIds.source.blockId,
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graphScale: graphPosition.scale,
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})
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [connectingIds, sourceEndpoints])
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const targetTop = useMemo(() => {
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if (!connectingIds) return 0
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return getEndpointTopOffset({
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endpoints: targetEndpoints,
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graphOffsetY: graphPosition.y,
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endpointId: connectingIds.target?.blockId,
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graphScale: graphPosition.scale,
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})
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [connectingIds, targetEndpoints])
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const path = useMemo(() => {
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if (!sourceTop || !sourceGroupCoordinates) return ``
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return targetGroupCoordinates
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? computeConnectingEdgePath({
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sourceGroupCoordinates,
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targetGroupCoordinates,
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sourceTop,
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targetTop,
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graphScale: graphPosition.scale,
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})
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: computeEdgePathToMouse({
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sourceGroupCoordinates,
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mousePosition,
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sourceTop,
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})
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}, [
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sourceTop,
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sourceGroupCoordinates,
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targetGroupCoordinates,
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targetTop,
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mousePosition,
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graphPosition.scale,
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])
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const handleMouseMove = (e: MouseEvent) => {
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const coordinates = {
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x: (e.clientX - graphPosition.x) / graphPosition.scale,
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y: (e.clientY - graphPosition.y) / graphPosition.scale,
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}
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setMousePosition(coordinates)
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}
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useEventListener('mousemove', handleMouseMove)
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useEventListener('mouseup', () => {
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if (connectingIds?.target) createNewEdge(connectingIds)
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setConnectingIds(null)
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})
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const createNewEdge = (connectingIds: ConnectingIds) => {
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assert(connectingIds.target)
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createEdge({ from: connectingIds.source, to: connectingIds.target })
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}
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if ((mousePosition.x === 0 && mousePosition.y === 0) || !connectingIds)
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return <></>
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return (
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<path
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d={path}
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stroke={colors.blue[400]}
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strokeWidth="2px"
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markerEnd="url(#blue-arrow)"
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fill="none"
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/>
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)
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}
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