修复TagsView组件中，鼠标滚轮按下的时候，可以关闭不可关闭的tag

@@ -77,3 +77,8 @@
 .el-range-editor.el-input__inner {
 .el-range-editor.el-input__inner {
   display: inline-flex !important;
   display: inline-flex !important;
 }
 }
+
+// to fix el-date-picker css style
+.el-range-separator {
+  box-sizing: content-box;
+}

 <template>
 <template>
-  <div v-if="!item.hidden" class="menu-wrapper">
+  <div v-if="!item.hidden">
     <template v-if="hasOneShowingChild(item.children,item) && (!onlyOneChild.children||onlyOneChild.noShowingChildren)&&!item.alwaysShow">
     <template v-if="hasOneShowingChild(item.children,item) && (!onlyOneChild.children||onlyOneChild.noShowingChildren)&&!item.alwaysShow">
       <app-link v-if="onlyOneChild.meta" :to="resolvePath(onlyOneChild.path)">
       <app-link v-if="onlyOneChild.meta" :to="resolvePath(onlyOneChild.path)">
         <el-menu-item :index="resolvePath(onlyOneChild.path)" :class="{'submenu-title-noDropdown':!isNest}">
         <el-menu-item :index="resolvePath(onlyOneChild.path)" :class="{'submenu-title-noDropdown':!isNest}">

@@ -9,16 +9,16 @@
         :to="{ path: tag.path, query: tag.query, fullPath: tag.fullPath }"
         :to="{ path: tag.path, query: tag.query, fullPath: tag.fullPath }"
         tag="span"
         tag="span"
         class="tags-view-item"
         class="tags-view-item"
-        @click.middle.native="closeSelectedTag(tag)"
+        @click.middle.native="!isAffix(tag)?closeSelectedTag(tag):''"
         @contextmenu.prevent.native="openMenu(tag,$event)"
         @contextmenu.prevent.native="openMenu(tag,$event)"
       >
       >
         {{ tag.title }}
         {{ tag.title }}
-        <span v-if="!tag.meta.affix" class="el-icon-close" @click.prevent.stop="closeSelectedTag(tag)" />
+        <span v-if="!isAffix(tag)" class="el-icon-close" @click.prevent.stop="closeSelectedTag(tag)" />
       </router-link>
       </router-link>
     </scroll-pane>
     </scroll-pane>
     <ul v-show="visible" :style="{left:left+'px',top:top+'px'}" class="contextmenu">
     <ul v-show="visible" :style="{left:left+'px',top:top+'px'}" class="contextmenu">
       <li @click="refreshSelectedTag(selectedTag)">刷新页面</li>
       <li @click="refreshSelectedTag(selectedTag)">刷新页面</li>
-      <li v-if="!(selectedTag.meta&&selectedTag.meta.affix)" @click="closeSelectedTag(selectedTag)">关闭当前</li>
+      <li v-if="!isAffix(selectedTag)" @click="closeSelectedTag(selectedTag)">关闭当前</li>
       <li @click="closeOthersTags">关闭其他</li>
       <li @click="closeOthersTags">关闭其他</li>
       <li @click="closeAllTags(selectedTag)">关闭所有</li>
       <li @click="closeAllTags(selectedTag)">关闭所有</li>
     </ul>
     </ul>
@@ -69,6 +69,9 @@ export default {
     isActive(route) {
     isActive(route) {
       return route.path === this.$route.path
       return route.path === this.$route.path
     },
     },
+    isAffix(tag) {
+      return tag.meta && tag.meta.affix
+    },
     filterAffixTags(routes, basePath = '/') {
     filterAffixTags(routes, basePath = '/') {
       let tags = []
       let tags = []
       routes.forEach(route => {
       routes.forEach(route => {