cjd-parkball/src/components/tabs/demo/editable-card.md

> 中后台业务组件库，中后台就像公园，进入需要买门票（登录），所以以 Parkball(公园球) 命名，公园内必定捕获！作为一个组件库，提供使用方法文档，方便开发者的调用

---
category: 2
title: 新增和关闭页签
title_en: Add & close tab
---

zh-CN

只有卡片样式的页签支持新增和关闭选项。
使用 `closable={false}` 禁止关闭。

en-US

Only card type Tabs support adding & closable.
+Use `closable={false}` to disable close.

````jsx
import { Tabs } from 'parkball';

const TabPane = Tabs.TabPane;

class Demo extends React.Component {
  constructor(props) {
    super(props);
    this.newTabIndex = 0;
    const panes = [
      { title: 'Tab 1', content: 'Content of Tab 1', key: '1' },
      { title: 'Tab 2', content: 'Content of Tab 2', key: '2' },
      { title: 'Tab 3', content: 'Content of Tab 3', key: '3', closable: false },
    ];
    this.state = {
      activeKey: panes[0].key,
      panes,
    };
  }

  onChange = (activeKey) => {
    this.setState({ activeKey });
  }

  onEdit = (targetKey, action) => {
    this[action](targetKey);
  }

  add = () => {
    const panes = this.state.panes;
    const activeKey = `newTab${this.newTabIndex++}`;
    panes.push({ title: 'New Tab', content: 'Content of new Tab', key: activeKey });
    this.setState({ panes, activeKey });
  }

  remove = (targetKey) => {
    let activeKey = this.state.activeKey;
    let lastIndex;
    this.state.panes.forEach((pane, i) => {
      if (pane.key === targetKey) {
        lastIndex = i - 1;
      }
    });
    const panes = this.state.panes.filter(pane => pane.key !== targetKey);
    if (lastIndex >= 0 && activeKey === targetKey) {
      activeKey = panes[lastIndex].key;
    }
    this.setState({ panes, activeKey });
  }

  render() {
    return (
      <Tabs
        onChange={this.onChange}
        activeKey={this.state.activeKey}
        type="editable-card"
        onEdit={this.onEdit}
      >
        {this.state.panes.map(pane => <TabPane tab={pane.title} key={pane.key} closable={pane.closable}>{pane.content}</TabPane>)}
      </Tabs>
    );
  }
}

ReactDOM.render(<Demo />, mountNode);
````