outline/app/scenes/Document/components/Editor.js

// @flow
import * as React from 'react';
import styled from 'styled-components';
import Textarea from 'react-autosize-textarea';
import { observer } from 'mobx-react';
import Editor from 'components/Editor';
import ClickablePadding from 'components/ClickablePadding';
import Flex from 'shared/components/Flex';
import parseTitle from 'shared/utils/parseTitle';
import Document from 'models/Document';
import DocumentMeta from './DocumentMeta';

type Props = {
  onChangeTitle: (event: SyntheticInputEvent<>) => void,
  title: string,
  defaultValue: string,
  document: Document,
  isDraft: boolean,
  readOnly?: boolean,
};

@observer
class DocumentEditor extends React.Component<Props> {
  editor: ?Editor;

  focusAtStart = () => {
    if (this.editor) {
      this.editor.focusAtStart();
    }
  };

  focusAtEnd = () => {
    if (this.editor) {
      this.editor.focusAtEnd();
    }
  };

  getHeadings = () => {
    if (this.editor) {
      return this.editor.getHeadings();
    }

    return [];
  };

  handleTitleKeyDown = (event: SyntheticKeyboardEvent<>) => {
    if (event.key === 'Enter' || event.key === 'Tab') {
      event.preventDefault();
      this.focusAtStart();
    }
  };

  render() {
    const { document, title, onChangeTitle, isDraft, readOnly } = this.props;
    const { emoji } = parseTitle(title);
    const startsWithEmojiAndSpace = !!(
      emoji && title.match(new RegExp(`^${emoji}\\s`))
    );

    return (
      <Flex auto column>
        <Title
          type="text"
          onChange={onChangeTitle}
          onKeyDown={this.handleTitleKeyDown}
          placeholder="Start with a title…"
          value={!title && readOnly ? 'Untitled' : title}
          style={startsWithEmojiAndSpace ? { marginLeft: '-1.2em' } : undefined}
          readOnly={readOnly}
          autoFocus={!title}
          maxLength={100}
        />
        <DocumentMeta isDraft={isDraft} document={document} />
        <Editor
          ref={ref => (this.editor = ref)}
          autoFocus={title && !this.props.defaultValue}
          placeholder="…the rest is up to you"
          grow
          {...this.props}
        />
        {!readOnly && <ClickablePadding onClick={this.focusAtEnd} grow />}
      </Flex>
    );
  }
}

const Title = styled(Textarea)`
  z-index: 1;
  line-height: 1.25;
  margin-top: 1em;
  margin-bottom: 0.5em;
  text: ${props => props.theme.text};
  background: ${props => props.theme.background};
  transition: ${props => props.theme.backgroundTransition};
  color: ${props => props.theme.text};
  font-size: 2.25em;
  font-weight: 500;
  outline: none;
  border: 0;
  padding: 0;
  resize: none;

  &::placeholder {
    color: ${props => props.theme.placeholder};
  }
`;

export default DocumentEditor;