122 lines
3.2 KiB
Vue
122 lines
3.2 KiB
Vue
<script setup>
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import { Background, Controls, MiniMap } from '@vue-flow/additional-components'
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import { VueFlow, isNode, useVueFlow } from '@vue-flow/core'
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import { ref } from 'vue'
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import { initialElements } from './initial-elements.js'
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/**
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* useVueFlow provides all event handlers and store properties
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* You can pass the composable an object that has the same properties as the VueFlow component props
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*/
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const { onPaneReady, onNodeDragStop, onConnect, instance, addEdges } = useVueFlow()
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/**
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* Our elements
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*/
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const elements = ref(initialElements)
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/**
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* This is a Vue Flow event-hook which can be listened to from anywhere you call the composable, instead of only on the main component
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*
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* onPaneReady is called when viewpane & nodes have visible dimensions
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*/
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onPaneReady(({ fitView }) => {
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fitView()
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})
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onNodeDragStop((e) => console.log('drag stop', e))
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/**
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* onConnect is called when a new connection is created.
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* You can add additional properties to your new edge (like a type or label) or block the creation altogether
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*/
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onConnect((params) => addEdges([params]))
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const dark = ref(false)
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/**
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* To update node properties you can simply use your elements v-model and mutate the elements directly
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* Changes should always be reflected on the graph reactively, without the need to overwrite the elements
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*/
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const updatePos = () =>
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elements.value.forEach((el) => {
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console.log(el, elements.value)
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if (isNode(el)) {
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el.position = {
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x: Math.random() * 400,
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y: Math.random() * 400,
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}
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}
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})
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/**
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* toObject transforms your current graph data to an easily persist-able object
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*/
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const logToObject = () => console.log(instance.value?.toObject())
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/**
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* Resets the current viewpane transformation (zoom & pan)
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*/
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const resetTransform = () => instance.value?.setTransform({ x: 0, y: 0, zoom: 1 })
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const toggleClass = () => {
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dark.value = !dark.value
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elements.value.forEach((el) => (el.class = dark.value ? 'dark' : 'light'))
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}
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</script>
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<template>
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<VueFlow v-model="elements" class="basicflow" :default-zoom="1.5" :min-zoom="0.2" :max-zoom="4">
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<Background pattern-color="#aaa" gap="8" />
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<MiniMap />
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<Controls />
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<div class="controls">
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<button style="background-color: #113285; color: white" @click="resetTransform">reset transform</button>
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<button style="background-color: #6f3381; color: white" @click="updatePos">update positions</button>
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<button
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:style="{
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backgroundColor: dark ? '#FFFFFB' : '#1C1C1C',
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color: dark ? '#1C1C1C' : '#FFFFFB',
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}"
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@click="toggleClass"
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>
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toggle {{ dark ? 'light' : 'dark' }}
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</button>
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<button @click="logToObject">log toObject</button>
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</div>
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</VueFlow>
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</template>
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<style>
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.basicflow .vue-flow__node.dark {
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background: #1c1c1c;
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color: #fffffb;
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}
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.basicflow .controls {
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position: absolute;
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left: 10px;
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top: 10px;
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z-index: 4;
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display: flex;
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flex-wrap: wrap;
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justify-content: center;
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gap: 8px;
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}
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.basicflow .controls button {
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padding: 5px;
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border-radius: 5px;
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font-weight: 500;
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box-shadow: 0 5px 10px #0000004d;
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cursor: pointer;
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}
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.basicflow .controls button:hover {
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opacity: 0.8;
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transform: scale(105%);
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transition: 0.25s all ease;
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}
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</style>
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