Collection book list: allow to directly input a position

front/src/CollectionForm.vue

@@ -58,7 +58,11 @@ function onDrop(id, position) {
     //nothing to do
     return
   }
-  postCollectionChangePosition(props.id, itemIdBeingGrabbed.value, position).then((res) => {
+  changePosition(itemIdBeingGrabbed.value, position)
+}
+
+function changePosition(id, position) {
+  postCollectionChangePosition(props.id, id, position).then((res) => {
     if (res.ok) {
       getCollection(data, error, props.id, limit, offset.value)
     } else {
@@ -87,6 +91,7 @@ function onDragend() {
         @dragend="onDragend"
         @dragover="onDragover"
         @dragenter="itemIdBeingOvered = item.id"
+        @positionchange="(pos) => changePosition(item.id, pos)"
         v-for="item in data.items"
         :key="item.id"
         :is-dragover="itemIdBeingOvered === item.id"