127 lines
3.2 KiB
Vue
127 lines
3.2 KiB
Vue
<script setup lang="ts">
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import { ref, watch, nextTick } from 'vue'
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import { VueFlow, useVueFlow } from '@vue-flow/core'
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import { Background } from '@vue-flow/background'
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import { Controls } from '@vue-flow/controls'
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import '@vue-flow/core/dist/style.css'
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import '@vue-flow/controls/dist/style.css'
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import '@vue-flow/core/dist/theme-default.css'
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import type { Connection } from '@vue-flow/core'
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import { computePositions } from '../composables/useLayout'
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const props = defineProps<{
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sceneNodes: { id: string; label: string }[]
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sceneEdges: { id: string; source: string; target: string; label?: string }[]
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startScene: string
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selectedNodeId: string | null
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}>()
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const emit = defineEmits<{
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selectNode: [id: string]
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addEdge: [source: string, target: string]
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}>()
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const nodes = ref<any[]>([])
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const edges = ref<any[]>([])
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const { onNodeClick, onConnect, fitView } = useVueFlow()
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function makeNodes() {
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const positions = computePositions(props.sceneNodes, props.sceneEdges, props.startScene)
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return props.sceneNodes.map((n) => {
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const pos = positions.get(n.id) ?? { x: 0, y: 0 }
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return {
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id: n.id,
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type: 'default',
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position: pos,
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data: { label: n.id === props.startScene ? `\u25b6 ${n.label}` : n.label },
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style: n.id === props.startScene
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? { background: '#1b5e20', color: '#fff', borderColor: '#388e3c' }
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: n.id === props.selectedNodeId
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? { background: '#1565c0', color: '#fff', borderColor: '#1976d2' }
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: {},
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sourcePosition: 'right' as const,
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targetPosition: 'left' as const,
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connectable: true,
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}
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})
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}
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function makeEdges() {
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return props.sceneEdges.map((e) => ({
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id: e.id,
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source: e.source,
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target: e.target,
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label: e.label ?? '',
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}))
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}
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let prevNodeCount = -1
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let prevEdgeCount = -1
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let didFitView = false
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let rebuildSeq = 0
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async function structuralRebuild() {
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const seq = ++rebuildSeq
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edges.value = []
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await nextTick()
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if (seq !== rebuildSeq) return
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nodes.value = makeNodes()
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await nextTick()
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if (seq !== rebuildSeq) return
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edges.value = makeEdges()
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prevNodeCount = props.sceneNodes.length
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prevEdgeCount = props.sceneEdges.length
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if (!didFitView && nodes.value.length > 0) {
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didFitView = true
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setTimeout(() => fitView({ padding: 0.2 }), 80)
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}
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}
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function inlineRebuild() {
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nodes.value = makeNodes()
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edges.value = makeEdges()
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}
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watch(
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() => [props.sceneNodes, props.sceneEdges, props.startScene, props.selectedNodeId] as const,
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() => {
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const nc = props.sceneNodes.length
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const ec = props.sceneEdges.length
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if (nc !== prevNodeCount || ec !== prevEdgeCount) {
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structuralRebuild()
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} else {
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inlineRebuild()
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}
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},
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{ immediate: true },
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)
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onNodeClick((ev) => emit('selectNode', ev.node.id))
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onConnect((conn: Connection) => {
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if (conn.source && conn.target) emit('addEdge', conn.source, conn.target)
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})
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</script>
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<template>
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<div class="scene-graph">
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<VueFlow
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:nodes="nodes"
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:edges="edges"
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:min-zoom="0.2"
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:max-zoom="2"
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>
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<Background :gap="20" />
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<Controls />
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</VueFlow>
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</div>
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</template>
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<style scoped>
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.scene-graph {
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width: 100%;
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height: 100%;
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background: #0d0d1a;
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}
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</style>
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