seahub/frontend/src/components/dialog/rename-wiki-dialog.js

import React from 'react';
import PropTypes from 'prop-types';
import { gettext } from '../../utils/constants';
import { Button, Modal, ModalHeader, Input, ModalBody, ModalFooter, Alert } from 'reactstrap';

const propTypes = {
  wiki: PropTypes.object,
  onRename: PropTypes.func.isRequired,
  toggleCancel: PropTypes.func.isRequired,
};

class RenameWikiDialog extends React.Component {

  constructor(props) {
    super(props);
    this.state = {
      newName: props.wiki.name,
      errMessage: '',
      isSubmitBtnActive: false,
    };
    this.newInput = React.createRef();
  }

  handleChange = (e) => {
    this.setState({
      isSubmitBtnActive: !!e.target.value.trim(),
      newName: e.target.value
    });
  };

  handleSubmit = () => {
    let { isValid, errMessage } = this.validateInput();
    if (!isValid) {
      this.setState({ errMessage: errMessage });
    } else {
      this.props.onRename(this.state.newName.trim());
    }
  };

  handleKeyDown = (e) => {
    if (e.key === 'Enter') {
      this.handleSubmit();
    }
  };

  toggle = () => {
    this.props.toggleCancel();
  };

  validateInput = () => {
    let newName = this.state.newName.trim();
    let isValid = true;
    let errMessage = '';
    if (!newName) {
      isValid = false;
      errMessage = gettext('Name is required.');
      return { isValid, errMessage };
    }
    if (newName.indexOf('/') > -1) {
      isValid = false;
      errMessage = gettext('Name should not include ' + '\'/\'' + '.');
      return { isValid, errMessage };
    }
    return { isValid, errMessage };
  };

  render() {
    return (
      <Modal isOpen={true} toggle={this.toggle}>
        <ModalHeader toggle={this.toggle}>{gettext('Rename Wiki')}</ModalHeader>
        <ModalBody>
          <p>{gettext('New Wiki name')}</p>
          <Input
            onKeyDown={this.handleKeyDown}
            innerRef={this.newInput}
            placeholder="newName"
            value={this.state.newName}
            onChange={this.handleChange}
          />
          {this.state.errMessage && <Alert color="danger" className="mt-2">{this.state.errMessage}</Alert>}
        </ModalBody>
        <ModalFooter>
          <Button color="secondary" onClick={this.toggle}>{gettext('Cancel')}</Button>
          <Button color="primary" onClick={this.handleSubmit} disabled={!this.state.isSubmitBtnActive}>{gettext('Submit')}</Button>
        </ModalFooter>
      </Modal>
    );
  }
}

RenameWikiDialog.propTypes = propTypes;

export default RenameWikiDialog;