修改我的任务页面显示bug

DAPlatform-front/src/components/OngoingTaskDetail.vue

@@ -22,11 +22,11 @@
       </pieces-table>
     </div>
     <el-dialog title="选择导出类型" :visible.sync="dialogVisible" width="40%" >
-      <el-button v-show="piece.type !== '文本'" type="primary" size="mini" plain @click="exportOriginal">原始图片</el-button>
-      <el-button v-show="piece.type !== '文本'" type="primary" size="mini" plain @click="exportJson">JSON文件</el-button>
-      <el-button v-show="piece.type !== '文本'" type="primary" size="mini" plain @click="exportLabel">标注后的图片</el-button>
-      <el-button v-show="piece.type === '文本'" type="primary" size="mini" plain @click="exportText">文本文件</el-button>
-      <el-button v-show="piece.type === '文本'" type="primary" size="mini" plain @click="exportLabelText">标注文件</el-button>
+      <el-button v-show="dialogVisible && piece.type !== '文本'" type="primary" size="mini" plain @click="exportOriginal">原始图片</el-button>
+      <el-button v-show="dialogVisible && piece.type !== '文本'" type="primary" size="mini" plain @click="exportJson">JSON文件</el-button>
+      <el-button v-show="dialogVisible && piece.type !== '文本'" type="primary" size="mini" plain @click="exportLabel">标注后的图片</el-button>
+      <el-button v-show="dialogVisible && piece.type === '文本'" type="primary" size="mini" plain @click="exportText">文本文件</el-button>
+      <el-button v-show="dialogVisible && piece.type === '文本'" type="primary" size="mini" plain @click="exportLabelText">标注文件</el-button>
     </el-dialog>
   </div>
 </template>
@@ -85,15 +85,15 @@ export default {
       this.piece = piece
     },
     exportOriginal () {
-      var relationId = this.exportInfo.relation_id
+      var relationId = this.file.relation_id
       download(`http://localhost:9100/api/image/export/original/${relationId}`)
     },
     exportJson () {
-      var relationId = this.exportInfo.relation_id
+      var relationId = this.file.relation_id
       download(`http://localhost:9100/api/image/export/json/${relationId}`)
     },
     exportLabel () {
-      var relationId = this.exportInfo.relation_id
+      var relationId = this.file.relation_id
       download(`http://localhost:9100/api/image/export/label/${relationId}`)
     },
     // 文本组的下载参数比较复杂，放在这里更方便设置参数