ant-design/components/tabs/demo/custom-add-trigger.md

order	title
11	zh-CN en-US 自定义新增页签触发器 Customized trigger of new tab

zh-CN

隐藏默认的页签增加图标，给自定义触发器绑定事件。

en-US

Hide default plus icon, and bind event for customized trigger.

import { Button, Tabs } from 'antd';
import React, { useRef, useState } from 'react';

const { TabPane } = Tabs;

const defaultPanes = Array.from({ length: 2 }).map((_, index) => {
  const id = String(index + 1);
  return { title: `Tab ${id}`, content: `Content of Tab Pane ${index + 1}`, key: id };
});

const App: React.FC = () => {
  const [activeKey, setActiveKey] = useState(defaultPanes[0].key);
  const [panes, setPanes] = useState(defaultPanes);
  const newTabIndex = useRef(0);

  const onChange = (key: string) => {
    setActiveKey(key);
  };

  const add = () => {
    const newActiveKey = `newTab${newTabIndex.current++}`;
    setPanes([...panes, { title: 'New Tab', content: 'New Tab Pane', key: newActiveKey }]);
    setActiveKey(newActiveKey);
  };

  const remove = (targetKey: string) => {
    let lastIndex = -1;
    panes.forEach((pane, i) => {
      if (pane.key === targetKey) {
        lastIndex = i - 1;
      }
    });
    if (panes.length && activeKey === targetKey) {
      let newActiveKey: string;
      if (lastIndex >= 0) {
        newActiveKey = panes[lastIndex].key;
      } else {
        newActiveKey = panes[0].key;
      }
      setActiveKey(newActiveKey);
    }
    const newPanes = panes.filter(pane => pane.key !== targetKey);
    setPanes(newPanes);
  };

  const onEdit = (targetKey: string, action: 'add' | 'remove') => {
    if (action === 'add') {
      add();
    } else {
      remove(targetKey);
    }
  };

  return (
    <div>
      <div style={{ marginBottom: 16 }}>
        <Button onClick={add}>ADD</Button>
      </div>
      <Tabs hideAdd onChange={onChange} activeKey={activeKey} type="editable-card" onEdit={onEdit}>
        {panes.map(pane => (
          <TabPane tab={pane.title} key={pane.key}>
            {pane.content}
          </TabPane>
        ))}
      </Tabs>
    </div>
  );
};

export default App;