修复预览自动化代码全选和复制的bug

修复预览自动化代码全选和复制的bug

Author: 奇淼（piexlmax

web/src/style/element_visiable.scss

@@ -177,8 +177,7 @@
       top: 16px;
   }
   .el-dialog__footer {
-      margin-top: -12px;
-      padding: 0 0 16px 0;
+      padding: 0 16px 16px 0;
       .dialog-footer {
           .el-button {
               padding-left: 24px;

web/src/view/systemTools/autoCode/index.vue

@@ -155,7 +155,7 @@
           <el-button size="mini" type="primary" @click="copy">复制</el-button>
         </div>
       </template>
-      <PreviewCodeDialog v-if="previewFlag" :preview-code="preViewCode" />
+      <PreviewCodeDialog v-if="previewFlag" ref="preview" :preview-code="preViewCode" />
       <template #footer>
         <div class="dialog-footer" style="padding-top:14px;padding-right:14px">
           <el-button size="small" type="primary" @click="previewFlag = false">确 定</el-button>
@@ -246,6 +246,12 @@ export default {
     }
   },
   methods: {
+    selectText() {
+      this.$refs.preview.selectText()
+    },
+    copy() {
+      this.$refs.preview.copy()
+    },
     editAndAddField(item) {
       this.dialogFlag = true
       if (item) {