fix(过滤组件): 下拉组件单选框选中后无法取消选中

core/frontend/src/views/panel/filter/filterMain/FilterHead.vue

@@ -55,6 +55,26 @@
         >{{ $t('commons.required') }}</el-checkbox>
       </div>
     </el-col>
+    <el-dialog
+      :visible.sync="dialogVisible"
+      append-to-body
+      :before-close="sureRequired"
+    >
+    当前组件的展示风格为平铺，如果设为非必填，那么组件的展示风格将切换为下拉展示。
+      <div style="text-align: end;margin-top: 16px;">
+        <span slot="footer">
+          <el-button
+            size="mini"
+            @click="dialogVisible = false"
+          >{{ $t('commons.cancel') }}</el-button>
+          <el-button
+            type="primary"
+            size="mini"
+            @click="sureRequired"
+          >{{ $t('commons.confirm') }}</el-button>
+        </span>
+      </div>
+    </el-dialog>
   </el-row>
 </template>
 
@@ -77,18 +97,22 @@ export default {
   },
   data() {
     return {
-      targets: []
+      dialogVisible: false
     }
-  },
-  computed: {
-
-  },
-
-  created() {
-
   },
   methods: {
+    sureRequired() {
+      this.element.options.attrs.required = false
+      this.dialogVisible = false
+    },
     requiredChange(val) {
+      if (val === false && (this.element.style.showMode && this.element.style.showMode === 'radio' && !this.element.options.attrs.multiple)) { 
+        this.dialogVisible = true
+        this.$nextTick(() => {
+          this.element.options.attrs.required = true
+        })
+        return
+      }
       this.$emit('required-change', val)
     },
     getTableName(tableId) {