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| 1 | +import { useCallback } from "react"; |
| 2 | +import { Node, Edge, useReactFlow, useViewport } from "@xyflow/react"; |
| 3 | + |
| 4 | +export function useCopyPaste(getNextNodeId: () => string) { |
| 5 | + const { setNodes, addEdges, getNodes, getEdges } = useReactFlow(); |
| 6 | + const { x, y, zoom } = useViewport(); |
| 7 | + |
| 8 | + const handleCopyPaste = useCallback( |
| 9 | + (event: KeyboardEvent) => { |
| 10 | + if (event.ctrlKey || event.metaKey) { |
| 11 | + if (event.key === "c" || event.key === "C") { |
| 12 | + const selectedNodes = getNodes().filter((node) => node.selected); |
| 13 | + const selectedEdges = getEdges().filter((edge) => edge.selected); |
| 14 | + |
| 15 | + const copiedData = { |
| 16 | + nodes: selectedNodes.map((node) => ({ |
| 17 | + ...node, |
| 18 | + data: { |
| 19 | + ...node.data, |
| 20 | + connections: [], |
| 21 | + }, |
| 22 | + })), |
| 23 | + edges: selectedEdges, |
| 24 | + }; |
| 25 | + |
| 26 | + localStorage.setItem("copiedFlowData", JSON.stringify(copiedData)); |
| 27 | + } |
| 28 | + if (event.key === "v" || event.key === "V") { |
| 29 | + const copiedDataString = localStorage.getItem("copiedFlowData"); |
| 30 | + if (copiedDataString) { |
| 31 | + const copiedData = JSON.parse(copiedDataString); |
| 32 | + const oldToNewIdMap: Record<string, string> = {}; |
| 33 | + |
| 34 | + const viewportCenter = { |
| 35 | + x: (window.innerWidth / 2 - x) / zoom, |
| 36 | + y: (window.innerHeight / 2 - y) / zoom, |
| 37 | + }; |
| 38 | + |
| 39 | + let minX = Infinity, |
| 40 | + minY = Infinity, |
| 41 | + maxX = -Infinity, |
| 42 | + maxY = -Infinity; |
| 43 | + copiedData.nodes.forEach((node: Node) => { |
| 44 | + minX = Math.min(minX, node.position.x); |
| 45 | + minY = Math.min(minY, node.position.y); |
| 46 | + maxX = Math.max(maxX, node.position.x); |
| 47 | + maxY = Math.max(maxY, node.position.y); |
| 48 | + }); |
| 49 | + |
| 50 | + const offsetX = viewportCenter.x - (minX + maxX) / 2; |
| 51 | + const offsetY = viewportCenter.y - (minY + maxY) / 2; |
| 52 | + |
| 53 | + const pastedNodes = copiedData.nodes.map((node: Node) => { |
| 54 | + const newNodeId = getNextNodeId(); |
| 55 | + oldToNewIdMap[node.id] = newNodeId; |
| 56 | + return { |
| 57 | + ...node, |
| 58 | + id: newNodeId, |
| 59 | + position: { |
| 60 | + x: node.position.x + offsetX, |
| 61 | + y: node.position.y + offsetY, |
| 62 | + }, |
| 63 | + data: { |
| 64 | + ...node.data, |
| 65 | + status: undefined, |
| 66 | + executionResults: undefined, |
| 67 | + }, |
| 68 | + }; |
| 69 | + }); |
| 70 | + |
| 71 | + const pastedEdges = copiedData.edges.map((edge: Edge) => { |
| 72 | + const newSourceId = oldToNewIdMap[edge.source] ?? edge.source; |
| 73 | + const newTargetId = oldToNewIdMap[edge.target] ?? edge.target; |
| 74 | + return { |
| 75 | + ...edge, |
| 76 | + id: `${newSourceId}_${edge.sourceHandle}_${newTargetId}_${edge.targetHandle}_${Date.now()}`, |
| 77 | + source: newSourceId, |
| 78 | + target: newTargetId, |
| 79 | + }; |
| 80 | + }); |
| 81 | + |
| 82 | + setNodes((existingNodes) => [ |
| 83 | + ...existingNodes.map((node) => ({ ...node, selected: false })), |
| 84 | + ...pastedNodes, |
| 85 | + ]); |
| 86 | + addEdges(pastedEdges); |
| 87 | + |
| 88 | + setNodes((nodes) => { |
| 89 | + return nodes.map((node) => { |
| 90 | + if (oldToNewIdMap[node.id]) { |
| 91 | + const nodeConnections = pastedEdges |
| 92 | + .filter( |
| 93 | + (edge) => |
| 94 | + edge.source === node.id || edge.target === node.id, |
| 95 | + ) |
| 96 | + .map((edge) => ({ |
| 97 | + edge_id: edge.id, |
| 98 | + source: edge.source, |
| 99 | + target: edge.target, |
| 100 | + sourceHandle: edge.sourceHandle, |
| 101 | + targetHandle: edge.targetHandle, |
| 102 | + })); |
| 103 | + return { |
| 104 | + ...node, |
| 105 | + data: { |
| 106 | + ...node.data, |
| 107 | + connections: nodeConnections, |
| 108 | + }, |
| 109 | + }; |
| 110 | + } |
| 111 | + return node; |
| 112 | + }); |
| 113 | + }); |
| 114 | + } |
| 115 | + } |
| 116 | + } |
| 117 | + }, |
| 118 | + [setNodes, addEdges, getNodes, getEdges, getNextNodeId, x, y, zoom], |
| 119 | + ); |
| 120 | + |
| 121 | + return handleCopyPaste; |
| 122 | +} |
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