fix[Drag]: fixed drag bug in firefox (#1841)

Author: PanJiaChen

src/components/DndList/index.vue

@@ -2,7 +2,7 @@
   <div class="dndList">
     <div :style="{width:width1}" class="dndList-list">
       <h3>{{ list1Title }}</h3>
-      <draggable :list="list1" group="article" class="dragArea">
+      <draggable :set-data="setData" :list="list1" group="article" class="dragArea">
         <div v-for="element in list1" :key="element.id" class="list-complete-item">
           <div class="list-complete-item-handle">
             {{ element.id }}[{{ element.author }}] {{ element.title }}
@@ -94,6 +94,11 @@ export default {
       if (this.isNotInList1(ele)) {
         this.list1.push(ele)
       }
+    },
+    setData(dataTransfer) {
+      // to avoid Firefox bug
+      // Detail see : https://github.com/RubaXa/Sortable/issues/1012
+      dataTransfer.setData('Text', '')
     }
   }
 }

src/components/Kanban/index.vue

@@ -7,6 +7,7 @@
       :list="list"
       v-bind="$attrs"
       class="board-column-content"
+      :set-data="setData"
     >
       <div v-for="element in list" :key="element.id" class="board-item">
         {{ element.name }} {{ element.id }}
@@ -39,6 +40,13 @@ export default {
         return []
       }
     }
+  },
+  methods: {
+    setData(dataTransfer) {
+      // to avoid Firefox bug
+      // Detail see : https://github.com/RubaXa/Sortable/issues/1012
+      dataTransfer.setData('Text', '')
+    }
   }
 }
 </script>

src/views/table/dragTable.vue

@@ -113,9 +113,9 @@ export default {
       this.sortable = Sortable.create(el, {
         ghostClass: 'sortable-ghost', // Class name for the drop placeholder,
         setData: function(dataTransfer) {
-          dataTransfer.setData('Text', '')
           // to avoid Firefox bug
           // Detail see : https://github.com/RubaXa/Sortable/issues/1012
+          dataTransfer.setData('Text', '')
         },
         onEnd: evt => {
           const targetRow = this.list.splice(evt.oldIndex, 1)[0]