examples: move current examples into examples/vite

examples/vite/src/DragNDrop/DnD.vue

@@ -0,0 +1,52 @@
+<script lang="ts" setup>
+import type { Node } from '../../packages/vue-flow'
+import { VueFlow, useVueFlow } from '../../packages/vue-flow'
+import Sidebar from './Sidebar.vue'
+
+let id = 0
+const getId = () => `dndnode_${id++}`
+
+const { instance, onConnect, nodes, edges, addEdges, addNodes } = useVueFlow({
+  nodes: [
+    {
+      id: '1',
+      type: 'input',
+      label: 'input node',
+      position: { x: 250, y: 5 },
+    },
+  ],
+})
+const onDragOver = (event: DragEvent) => {
+  event.preventDefault()
+  if (event.dataTransfer) {
+    event.dataTransfer.dropEffect = 'move'
+  }
+}
+
+onConnect((params) => addEdges([params]))
+
+const onDrop = (event: DragEvent) => {
+  if (instance.value) {
+    const type = event.dataTransfer?.getData('application/vueflow')
+    const position = instance.value.project({ x: event.clientX, y: event.clientY - 40 })
+    const newNode = {
+      id: getId(),
+      type,
+      position,
+      label: `${type} node`,
+    } as Node
+    addNodes([newNode])
+  }
+}
+</script>
+
+<template>
+  <div class="dndflow" @drop="onDrop">
+    <VueFlow @dragover="onDragOver" />
+    <Sidebar />
+  </div>
+</template>
+
+<style>
+@import 'dnd.css';
+</style>