zent/alert/src/Alert.js

一套前端设计语言和基于React的实现

import React, { PropTypes, Component } from 'react';
import cx from 'zent-utils/classnames';
import isFunction from 'zent-utils/lodash/isFunction';

// 忽略不支持的style
const styleClassMap = {
  info: 'alert-style-info',
  warning: 'alert-style-warning',

  // error as an alias to danger
  error: 'alert-style-danger',
  danger: 'alert-style-danger'
};

// 忽略不支持的size
const sizeClassMap = {
  normal: 'alert-size-normal',
  large: 'alert-size-large'
};

export default class Alert extends Component {
  static propTypes = {
    type: PropTypes.oneOf(['info', 'warning', 'danger', 'error']).isRequired,
    size: PropTypes.oneOf(['large', 'normal']),
    rounded: PropTypes.bool,
    closable: PropTypes.bool,
    onClose: PropTypes.func,
    children: PropTypes.node,
    className: PropTypes.string,
    prefix: PropTypes.string
  };

  static defaultProps = {
    type: 'info',
    size: 'normal',
    closable: false,
    rounded: false,
    className: '',
    prefix: 'zent'
  };

  state = {
    closed: false
  };

  onClose = () => {
    this.setState({
      closed: true
    }, () => {
      // onClose是在*关闭以后*被调用的
      const { onClose } = this.props;
      if (isFunction(onClose)) {
        onClose();
      }
    });
  };

  render() {
    const { closed } = this.state;
    if (closed) {
      return null;
    }

    const { type, prefix, rounded, className, closable, size, children } = this.props;
    const containerCls = cx(
      `${prefix}-alert`,
      `${prefix}-${styleClassMap[type]}`,
      `${prefix}-${sizeClassMap[size]}`,
      {
        [className]: !!className,
        [`${prefix}-alert-border-rounded`]: rounded,
        [`${prefix}-alert-closable`]: closable
      }
    );

    return (
      <div className={containerCls}>
        {closable && <div className={`${prefix}-alert-close-wrapper`}>
          <span className={`${prefix}-alert-close-btn`} onClick={this.onClose}>&times;</span>
        </div>}
        <div className={`${prefix}-alert-content-wrapper`}>
          <div className={`${prefix}-alert-content`}>{children}</div>
        </div>
      </div>
    );
  }
}