代码生成预览支持复制内容

src/directive/common/copyText.js

@@ -0,0 +1,66 @@
+/**
+* v-copyText 复制文本内容
+* Copyright (c) 2022 ruoyi
+*/
+
+export default {
+  beforeMount(el, { value, arg }) {
+    if (arg === "callback") {
+      el.$copyCallback = value;
+    } else {
+      el.$copyValue = value;
+      const handler = () => {
+        copyTextToClipboard(el.$copyValue);
+        if (el.$copyCallback) {
+          el.$copyCallback(el.$copyValue);
+        }
+      };
+      el.addEventListener("click", handler);
+      el.$destroyCopy = () => el.removeEventListener("click", handler);
+    }
+  }
+}
+
+function copyTextToClipboard(input, { target = document.body } = {}) {
+  const element = document.createElement('textarea');
+  const previouslyFocusedElement = document.activeElement;
+
+  element.value = input;
+
+  // Prevent keyboard from showing on mobile
+  element.setAttribute('readonly', '');
+
+  element.style.contain = 'strict';
+  element.style.position = 'absolute';
+  element.style.left = '-9999px';
+  element.style.fontSize = '12pt'; // Prevent zooming on iOS
+
+  const selection = document.getSelection();
+  const originalRange = selection.rangeCount > 0 && selection.getRangeAt(0);
+
+  target.append(element);
+  element.select();
+
+  // Explicit selection workaround for iOS
+  element.selectionStart = 0;
+  element.selectionEnd = input.length;
+
+  let isSuccess = false;
+  try {
+    isSuccess = document.execCommand('copy');
+  } catch { }
+
+  element.remove();
+
+  if (originalRange) {
+    selection.removeAllRanges();
+    selection.addRange(originalRange);
+  }
+
+  // Get the focus back on the previously focused element, if any
+  if (previouslyFocusedElement) {
+    previouslyFocusedElement.focus();
+  }
+
+  return isSuccess;
+}

src/directive/index.js

@@ -1,7 +1,9 @@
 import hasRole from './permission/hasRole'
 import hasPermi from './permission/hasPermi'
+import copyText from './common/copyText'
 
 export default function directive(app){
   app.directive('hasRole', hasRole)
   app.directive('hasPermi', hasPermi)
+  app.directive('copyText', copyText)
 }

src/views/tool/gen/index.vue

@@ -163,6 +163,7 @@
           :name="key.substring(key.lastIndexOf('/')+1,key.indexOf('.vm'))"
           :key="key"
         >
+          <el-link :underline="false" icon="DocumentCopy" v-copyText="value" v-copyText:callback="copyTextSuccess" style="float:right">&nbsp;复制</el-link>
           <pre>{{ value }}</pre>
         </el-tab-pane>
       </el-tabs>
@@ -274,6 +275,10 @@ function handlePreview(row) {
     preview.value.activeName = "domain.java";
   });
 }
+/** 复制代码成功 */
+function copyTextSuccess() {
+  proxy.$modal.msgSuccess("复制成功");
+}
 // 多选框选中数据
 function handleSelectionChange(selection) {
   ids.value = selection.map(item => item.tableId);