Bug Report and Inquiry on Node Dragging in he-tree Library

[kermitmei]

Dear Developer,

I would like to extend my heartfelt gratitude for creating such an excellent library. I am writing to report a potential bug and seek guidance on a specific functionality.

Bug Description:
Upon the initial drag of a Node, the value of dragContext.targetInfo.dragNode is null.

I am aiming to achieve the functionality where after dragging a node within the tree and dropping it, I can retrieve the position where the node is placed (i.e., the parent and index).

Here is the code snippet I am utilizing:

<template>
  <Draggable class="mtl-tree menu-font q-pl-sm"
             ref="menuTree"
             :default-open="false"
             v-model="treeData"
             @drop="dropToggle"
             :eachDroppable="eachDroppable"
             :rootDroppable="rootDroppable"
             treeLine>  
</template>

......

<script setup lang="ts">
function dropToggle() {
  let indexAfterDrop = 0;
  for (let i = 0; i < dragContext.startInfo.siblings.length; i++) {
    if (dragContext.startInfo.siblings[i]?.data.name == null) {
      console.log('dropToggle siblings %d ->', i, dragContext.startInfo.siblings[i]);
      indexAfterDrop = i;
    }
  }
  console.log('dropToggle from %d -> %d', dragContext.startInfo.indexBeforeDrop, indexAfterDrop);
  console.log('dropToggle targetInfo', dragContext.targetInfo.dragNode)
}
</script>

However, when I first drag an element, the output of dragContext.targetInfo.dragNode is consistently null. I am uncertain if this is a bug and would appreciate it if you could take a look.

Additionally, I would like to inquire about the proper implementation to obtain the dragged node and its position information after the drag operation.

I hope to hear from you soon.

Yours sincerely,
Kermit

[kermitmei]

All right, just use dragContext.dragNode.