cjd-parkball/src/components/tabs/demo/custom-add-trigger.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: 自定义新增页签触发器
title_en: 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.

````jsx
import { Tabs, Button } 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 Pane 1', key: '1' },
      { title: 'Tab 2', content: 'Content of Tab Pane 2', key: '2' },
    ];
    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: 'New Tab Pane', 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 (
      <div>
        <div style={{ marginBottom: 16 }}>
          <Button onClick={this.add}>ADD</Button>
        </div>
        <Tabs
          hideAdd
          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}>{pane.content}</TabPane>)}
        </Tabs>
      </div>
    );
  }
}

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