138 lines
3.7 KiB
Vue
138 lines
3.7 KiB
Vue
<script setup>
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import dagre from 'dagre'
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import { nextTick, ref } from 'vue'
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import { Panel, Position, VueFlow, useVueFlow } from '@vue-flow/core'
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import { Background } from '@vue-flow/background'
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import ProcessNode from './ProcessNode.vue'
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import AnimationEdge from './AnimationEdge.vue'
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import { initialEdges, initialNodes } from './initial-elements.js'
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import { useRunProcess } from './useRunProcess'
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const nodes = ref(initialNodes)
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const edges = ref(initialEdges)
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const dagreGraph = ref(new dagre.graphlib.Graph())
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const { run, stop, isRunning } = useRunProcess(dagreGraph)
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const { findNode, fitView } = useVueFlow()
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function handleLayout(direction) {
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// we create a new graph instance, in case some nodes/edges were removed, otherwise dagre would act as if they were still there
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dagreGraph.value = new dagre.graphlib.Graph()
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dagreGraph.value.setDefaultEdgeLabel(() => ({}))
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const isHorizontal = direction === 'LR'
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dagreGraph.value.setGraph({ rankdir: direction })
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for (const node of nodes.value) {
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// if you need width+height of nodes for your layout, you can use the dimensions property of the internal node (`GraphNode` type)
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const graphNode = findNode(node.id)
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dagreGraph.value.setNode(node.id, { width: graphNode.dimensions.width || 150, height: graphNode.dimensions.height || 50 })
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}
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for (const edge of edges.value) {
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dagreGraph.value.setEdge(edge.source, edge.target)
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}
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dagre.layout(dagreGraph.value)
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// set nodes with updated positions
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nodes.value = nodes.value.map((node) => {
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const nodeWithPosition = dagreGraph.value.node(node.id)
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return {
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...node,
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targetPosition: isHorizontal ? Position.Left : Position.Top,
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sourcePosition: isHorizontal ? Position.Right : Position.Bottom,
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position: { x: nodeWithPosition.x, y: nodeWithPosition.y },
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}
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})
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nextTick(() => {
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fitView()
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})
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}
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</script>
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<template>
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<div class="layoutflow">
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<VueFlow :nodes="nodes" :edges="edges" @nodes-initialized="handleLayout('LR')">
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<template #node-process="props">
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<ProcessNode :data="props.data" :source-position="props.sourcePosition" :target-position="props.targetPosition" />
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</template>
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<template #edge-animation="edgeProps">
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<AnimationEdge
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:id="edgeProps.id"
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:source="edgeProps.source"
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:source-x="edgeProps.sourceX"
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:source-y="edgeProps.sourceY"
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:targetX="edgeProps.targetX"
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:targetY="edgeProps.targetY"
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:source-position="edgeProps.sourcePosition"
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:target-position="edgeProps.targetPosition"
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/>
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</template>
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<Background />
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<Panel class="layout-panel" position="top-left">
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<button @click="handleLayout('TB')">vertical</button>
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<button @click="handleLayout('LR')">horizontal</button>
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</Panel>
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<Panel class="process-panel" position="top-right">
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<button v-if="isRunning" @click="stop">🛑</button>
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<button v-else @click="run(nodes)">▶️</button>
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</Panel>
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</VueFlow>
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</div>
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</template>
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<style>
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.layoutflow {
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background-color: #1a192b;
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height: 100%;
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width: 100%;
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}
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.process-panel,
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.layout-panel {
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display: flex;
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gap: 10px;
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}
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.process-panel button,
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.layout-panel button {
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border: none;
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padding: 10px;
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cursor: pointer;
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background-color: #2d3748;
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border-radius: 8px;
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color: white;
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box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
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}
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.process-panel button {
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font-size: 24px;
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width: 50px;
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height: 50px;
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}
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.process-panel button:hover,
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.layout-panel button:hover {
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background-color: #4b5563;
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transition: background-color 0.2s;
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}
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.process-panel button:disabled {
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background-color: #4b5563;
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cursor: not-allowed;
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}
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</style>
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