材料信息功能优化

@@ -17,7 +17,7 @@
     <div class="thumb-wrap">
       <div class="thumb-wrap-button">
         <el-button type="primary" @click="clickImage">（放大） 显示（缩小）</el-button>
-        <el-upload class="fileUpdate" action="" :show-file-list="false" multiple :limit="5" :auto-upload="false"
+        <el-upload class="fileUpdate" action="" :show-file-list="false" multiple :auto-upload="false"
           :on-change="handleChange" accept=".JPG, .PNG, .JPEG,.jpg, .png, .jpeg" :before-upload="beforeUpload">
           <el-button icon="el-icon-upload" type="primary">上传</el-button>
         </el-upload>

@@ -29,7 +29,7 @@
             </el-collapse-transition>
           </div>
         </div>
-        <image-preview :previewImg="previewImg" @updateList="updateList" />
+        <image-preview ref='imageRef' :previewImg="previewImg" @updateList="updateList" />
       </div>
     </div>
     <clxxAddDialog v-model="isDialog" />
@@ -233,7 +233,8 @@ export default {
       })
     },
     updateList (val) {
-      this.tableData.forEach(item => {
+      if(val!=null){ //删除最后一张图片时 val=null
+        this.tableData.forEach(item => {
         if (item.bsmSj === val.bsmSj) {
           item.children = val.children
         }
@@ -242,6 +243,15 @@ export default {
       if (this.previewImg.index == this.previewImg.imgList.length) {
         this.previewImg.index = this.previewImg.index - 1
       }
+      }else{
+        this.previewImg.imgList = []
+        this.tableData.forEach(item => {
+          if(this.treeCheckId == item.bsmSj){
+             item.children = []
+          }
+      })
+      }
+     
     },
     // 左侧菜单点击
     menuClick (item) {