docs: move examples dir out of components dir

docs/examples/dnd/App.vue

@@ -0,0 +1,74 @@
+<script setup>
+import { VueFlow, useVueFlow } from '@vue-flow/core'
+import { nextTick, watch } from 'vue'
+import Sidebar from './Sidebar.vue'
+
+let id = 0
+function getId() {
+  return `dndnode_${id++}`
+}
+
+const { findNode, onConnect, addEdges, addNodes, project, vueFlowRef } = useVueFlow({
+  nodes: [
+    {
+      id: '1',
+      type: 'input',
+      label: 'input node',
+      position: { x: 250, y: 25 },
+    },
+  ],
+})
+
+function onDragOver(event) {
+  event.preventDefault()
+
+  if (event.dataTransfer) {
+    event.dataTransfer.dropEffect = 'move'
+  }
+}
+
+onConnect((params) => addEdges(params))
+
+function onDrop(event) {
+  const type = event.dataTransfer?.getData('application/vueflow')
+
+  const { left, top } = vueFlowRef.value.getBoundingClientRect()
+
+  const position = project({
+    x: event.clientX - left,
+    y: event.clientY - top,
+  })
+
+  const newNode = {
+    id: getId(),
+    type,
+    position,
+    label: `${type} node`,
+  }
+
+  addNodes([newNode])
+
+  // align node position after drop, so it's centered to the mouse
+  nextTick(() => {
+    const node = findNode(newNode.id)
+    const stop = watch(
+      () => node.dimensions,
+      (dimensions) => {
+        if (dimensions.width > 0 && dimensions.height > 0) {
+          node.position = { x: node.position.x - node.dimensions.width / 2, y: node.position.y - node.dimensions.height / 2 }
+          stop()
+        }
+      },
+      { deep: true, flush: 'post' },
+    )
+  })
+}
+</script>
+
+<template>
+  <div class="dndflow" @drop="onDrop">
+    <VueFlow @dragover="onDragOver" />
+
+    <Sidebar />
+  </div>
+</template>