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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 | /** * Workflow Builder Component * * Visual workflow editor using React Flow for creating and editing * Pipeline DSL configurations. */ import { useCallback, useRef, useEffect } from 'react'; import { ReactFlow, Controls, Background, MiniMap, BackgroundVariant, Connection, addEdge, useNodesState, useEdgesState, Node, NodeChange, EdgeChange, Edge, NodeTypes, ReactFlowProvider, useReactFlow, } from '@xyflow/react'; import '@xyflow/react/dist/style.css'; import { useWorkflowBuilderStore, paletteCategories } from '../../store/workflowBuilderStore'; import type { WorkflowNodeData, WorkflowNodeType } from '../../lib/workflow-builder/types'; // Import custom node components import { InputNode } from './nodes/InputNode'; import { LlmNode } from './nodes/LlmNode'; import { SkillNode } from './nodes/SkillNode'; import { HandNode } from './nodes/HandNode'; import { ConditionNode } from './nodes/ConditionNode'; import { ParallelNode } from './nodes/ParallelNode'; import { ExportNode } from './nodes/ExportNode'; import { HttpNode } from './nodes/HttpNode'; import { OrchestrationNode } from './nodes/OrchestrationNode'; import { NodePalette } from './NodePalette'; import { PropertyPanel } from './PropertyPanel'; import { WorkflowToolbar } from './WorkflowToolbar'; // ============================================================================= // Node Types Configuration // ============================================================================= const nodeTypes: NodeTypes = { input: InputNode, llm: LlmNode, skill: SkillNode, hand: HandNode, condition: ConditionNode, parallel: ParallelNode, export: ExportNode, http: HttpNode, orchestration: OrchestrationNode, }; // ============================================================================= // Main Component // ============================================================================= export function WorkflowBuilderInternal() { const reactFlowWrapper = useRef<HTMLDivElement>(null); const { screenToFlowPosition } = useReactFlow(); const { canvas, isDirty, selectedNodeId, validation, addNode, updateNode, deleteNode, addEdge: addStoreEdge, selectNode, saveWorkflow, validate, setDragging, } = useWorkflowBuilderStore(); // Local state for React Flow const [nodes, setNodes, onNodesChange] = useNodesState<Node<WorkflowNodeData>>([]); const [edges, setEdges, onEdgesChange] = useEdgesState<Edge>([]); // Sync canvas state with React Flow useEffect(() => { if (canvas) { setNodes(canvas.nodes.map(n => ({ id: n.id, type: n.type, position: n.position, data: n.data as WorkflowNodeData, }))); setEdges(canvas.edges.map(e => ({ id: e.id, source: e.source, target: e.target, type: e.type || 'default', animated: true, }))); } else { setNodes([]); setEdges([]); } }, [canvas?.id]); // Handle node changes (position, selection) const handleNodesChange = useCallback( (changes: NodeChange<Node<WorkflowNodeData>>[]) => { onNodesChange(changes); // Sync position changes back to store for (const change of changes) { if (change.type === 'position' && change.position) { const node = nodes.find(n => n.id === change.id); if (node) { // Position updates are handled by React Flow internally } } if (change.type === 'select') { selectNode(change.selected ? change.id : null); } } }, [onNodesChange, nodes, selectNode] ); // Handle edge changes const handleEdgesChange = useCallback( (changes: EdgeChange[]) => { onEdgesChange(changes); }, [onEdgesChange] ); // Handle new connections const onConnect = useCallback( (connection: Connection) => { if (connection.source && connection.target) { addStoreEdge(connection.source, connection.target); setEdges((eds) => addEdge( { ...connection, type: 'default', animated: true, }, eds ) ); } }, [addStoreEdge, setEdges] ); // Handle node click const onNodeClick = useCallback( (_event: React.MouseEvent, node: Node) => { selectNode(node.id); }, [selectNode] ); // Handle pane click (deselect) const onPaneClick = useCallback(() => { selectNode(null); }, [selectNode]); // Handle drag over for palette items const onDragOver = useCallback((event: React.DragEvent) => { event.preventDefault(); event.dataTransfer.dropEffect = 'move'; }, []); // Handle drop from palette const onDrop = useCallback( (event: React.DragEvent) => { event.preventDefault(); const type = event.dataTransfer.getData('application/reactflow') as WorkflowNodeType; if (!type) return; const position = screenToFlowPosition({ x: event.clientX, y: event.clientY, }); addNode(type, position); }, [screenToFlowPosition, addNode] ); // Handle keyboard shortcuts useEffect(() => { const handleKeyDown = (event: KeyboardEvent) => { // Delete selected node if ((event.key === 'Delete' || event.key === 'Backspace') && selectedNodeId) { deleteNode(selectedNodeId); } // Save workflow if ((event.ctrlKey || event.metaKey) && event.key === 's') { event.preventDefault(); saveWorkflow(); } }; window.addEventListener('keydown', handleKeyDown); return () => window.removeEventListener('keydown', handleKeyDown); }, [selectedNodeId, deleteNode, saveWorkflow]); if (!canvas) { return ( <div className="flex items-center justify-center h-full bg-gray-50"> <div className="text-center"> <p className="text-gray-500 mb-4">No workflow loaded</p> <button onClick={() => useWorkflowBuilderStore.getState().createNewWorkflow('New Workflow')} className="px-4 py-2 bg-blue-500 text-white rounded hover:bg-blue-600" > Create New Workflow </button> </div> </div> ); } return ( <div className="flex h-full"> {/* Node Palette */} <NodePalette categories={paletteCategories} onDragStart={() => { setDragging(true); }} onDragEnd={() => { setDragging(false); }} /> {/* Canvas */} <div className="flex-1 flex flex-col"> <WorkflowToolbar workflowName={canvas.name} isDirty={isDirty} validation={validation} onSave={saveWorkflow} onValidate={validate} /> <div ref={reactFlowWrapper} className="flex-1"> <ReactFlow nodes={nodes} edges={edges} onNodesChange={handleNodesChange} onEdgesChange={handleEdgesChange} onConnect={onConnect} onNodeClick={onNodeClick} onPaneClick={onPaneClick} onDragOver={onDragOver} onDrop={onDrop} nodeTypes={nodeTypes} fitView snapToGrid snapGrid={[15, 15]} defaultEdgeOptions={{ animated: true, type: 'smoothstep', }} > <Controls /> <MiniMap nodeColor={(node) => { switch (node.type) { case 'input': return '#10b981'; case 'llm': return '#8b5cf6'; case 'skill': return '#f59e0b'; case 'hand': return '#ef4444'; case 'export': return '#3b82f6'; default: return '#6b7280'; } }} maskColor="rgba(0, 0, 0, 0.1)" /> <Background variant={BackgroundVariant.Dots} gap={20} size={1} /> </ReactFlow> </div> </div> {/* Property Panel */} {selectedNodeId && ( <PropertyPanel nodeId={selectedNodeId} nodeData={nodes.find(n => n.id === selectedNodeId)?.data as WorkflowNodeData} onUpdate={(data) => updateNode(selectedNodeId, data)} onDelete={() => deleteNode(selectedNodeId)} onClose={() => selectNode(null)} /> )} </div> ); } // Export with provider export function WorkflowBuilder() { return ( <ReactFlowProvider> <WorkflowBuilderInternal /> </ReactFlowProvider> ); } export default WorkflowBuilder; |