redash/client/app/components/InputWithCopy.jsx

import React from 'react';
import Input from 'antd/lib/input';
import Icon from 'antd/lib/icon';
import Tooltip from 'antd/lib/tooltip';

export default class InputWithCopy extends React.Component {
  constructor(props) {
    super(props);
    this.state = { copied: null };
    this.ref = React.createRef();
    this.copyFeatureSupported = document.queryCommandSupported('copy');
    this.resetCopyState = null;
  }

  componentWillUnmount() {
    if (this.resetCopyState) {
      clearTimeout(this.resetCopyState);
    }
  }

  copy = () => {
    // select text
    this.ref.current.select();

    // copy
    try {
      const success = document.execCommand('copy');
      if (!success) {
        throw new Error();
      }
      this.setState({ copied: 'Copied!' });
    } catch (err) {
      this.setState({
        copied: 'Copy failed',
      });
    }

    // reset tooltip
    this.resetCopyState = setTimeout(() => this.setState({ copied: null }), 2000);
  };

  render() {
    const copyButton = (
      <Tooltip title={this.state.copied || 'Copy'}>
        <Icon
          type="copy"
          style={{ cursor: 'pointer' }}
          onClick={this.copy}
        />
      </Tooltip>
    );

    return (
      <Input {...this.props} ref={this.ref} addonAfter={this.copyFeatureSupported && copyButton} />
    );
  }
}