253 lines
6.2 KiB
JavaScript
253 lines
6.2 KiB
JavaScript
// @flow
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import React, { Component } from 'react';
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import PropTypes from 'prop-types';
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import { observer } from 'mobx-react';
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import { Editor, Plain } from 'slate';
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import keydown from 'react-keydown';
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import classnames from 'classnames/bind';
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import type { Document, State, Editor as EditorType } from './types';
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import getDataTransferFiles from 'utils/getDataTransferFiles';
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import uploadFile from 'utils/uploadFile';
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import Flex from 'components/Flex';
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import ClickablePadding from './components/ClickablePadding';
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import Toolbar from './components/Toolbar';
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import Markdown from './serializer';
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import createSchema from './schema';
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import createPlugins from './plugins';
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import styled from 'styled-components';
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import styles from './Editor.scss';
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const cx = classnames.bind(styles);
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type Props = {
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text: string,
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onChange: Function,
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onSave: Function,
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onCancel: Function,
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onStar: Function,
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onUnstar: Function,
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onImageUploadStart: Function,
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onImageUploadStop: Function,
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starred: boolean,
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emoji: string,
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readOnly: boolean,
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heading?: ?React.Element<*>,
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};
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type KeyData = {
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isMeta: boolean,
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key: string,
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};
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@observer class MarkdownEditor extends Component {
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props: Props;
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editor: EditorType;
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schema: Object;
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plugins: Array<Object>;
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state: {
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state: State,
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};
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constructor(props: Props) {
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super(props);
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this.schema = createSchema({
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onStar: props.onStar,
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onUnstar: props.onUnstar,
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});
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this.plugins = createPlugins({
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onImageUploadStart: props.onImageUploadStart,
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onImageUploadStop: props.onImageUploadStop,
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});
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if (props.text) {
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this.state = { state: Markdown.deserialize(props.text) };
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} else {
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this.state = { state: Plain.deserialize('') };
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}
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}
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componentDidMount() {
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if (!this.props.readOnly) {
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if (this.props.text) {
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this.focusAtEnd();
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} else {
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this.focusAtStart();
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}
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}
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}
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componentDidUpdate(prevProps: Props) {
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if (prevProps.readOnly && !this.props.readOnly) {
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this.focusAtEnd();
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}
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}
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getChildContext() {
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return { starred: this.props.starred };
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}
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onChange = (state: State) => {
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this.setState({ state });
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};
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onDocumentChange = (document: Document, state: State) => {
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this.props.onChange(Markdown.serialize(state));
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};
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handleDrop = async (ev: SyntheticEvent) => {
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// check if this event was already handled by the Editor
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if (ev.isDefaultPrevented()) return;
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// otherwise we'll handle this
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ev.preventDefault();
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ev.stopPropagation();
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const files = getDataTransferFiles(ev);
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for (const file of files) {
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await this.insertFile(file);
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}
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};
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insertFile = async (file: Object) => {
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this.props.onImageUploadStart();
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const asset = await uploadFile(file);
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const state = this.editor.getState();
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const transform = state.transform();
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transform.collapseToEndOf(state.document);
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transform.insertBlock({
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type: 'image',
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isVoid: true,
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data: { src: asset.url, alt: file.name },
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});
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this.props.onImageUploadStop();
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this.setState({ state: transform.apply() });
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};
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cancelEvent = (ev: SyntheticEvent) => {
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ev.preventDefault();
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};
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// Handling of keyboard shortcuts outside of editor focus
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@keydown('meta+s')
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onSave(ev: SyntheticKeyboardEvent) {
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if (this.props.readOnly) return;
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ev.preventDefault();
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ev.stopPropagation();
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this.props.onSave();
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}
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@keydown('meta+enter')
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onSaveAndExit(ev: SyntheticKeyboardEvent) {
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if (this.props.readOnly) return;
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ev.preventDefault();
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ev.stopPropagation();
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this.props.onSave({ redirect: false });
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}
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@keydown('esc')
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onCancel() {
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if (this.props.readOnly) return;
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this.props.onCancel();
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}
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// Handling of keyboard shortcuts within editor focus
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onKeyDown = (ev: SyntheticKeyboardEvent, data: KeyData, state: State) => {
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if (!data.isMeta) return;
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switch (data.key) {
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case 's':
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this.onSave(ev);
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return state;
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case 'enter':
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this.onSaveAndExit(ev);
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return state;
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case 'escape':
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this.onCancel();
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return state;
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default:
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}
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};
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focusAtStart = () => {
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const state = this.editor.getState();
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const transform = state.transform();
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transform.collapseToStartOf(state.document);
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transform.focus();
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this.setState({ state: transform.apply() });
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};
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focusAtEnd = () => {
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const state = this.editor.getState();
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const transform = state.transform();
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transform.collapseToEndOf(state.document);
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transform.focus();
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this.setState({ state: transform.apply() });
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};
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render = () => {
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return (
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<Flex
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onDrop={this.handleDrop}
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onDragOver={this.cancelEvent}
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onDragEnter={this.cancelEvent}
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align="flex-start"
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justify="center"
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auto
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>
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<MaxWidth column auto>
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<HeaderContainer
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onClick={this.focusAtStart}
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readOnly={this.props.readOnly}
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>
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{this.props.heading}
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</HeaderContainer>
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<Toolbar state={this.state.state} onChange={this.onChange} />
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<Editor
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key={this.props.starred}
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ref={ref => (this.editor = ref)}
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placeholder="Start with a title…"
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bodyPlaceholder="Insert witty platitude here"
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className={cx(styles.editor, { readOnly: this.props.readOnly })}
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schema={this.schema}
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plugins={this.plugins}
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emoji={this.props.emoji}
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state={this.state.state}
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onKeyDown={this.onKeyDown}
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onChange={this.onChange}
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onDocumentChange={this.onDocumentChange}
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onSave={this.props.onSave}
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readOnly={this.props.readOnly}
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/>
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<ClickablePadding
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onClick={!this.props.readOnly ? this.focusAtEnd : undefined}
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grow
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/>
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</MaxWidth>
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</Flex>
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);
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};
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}
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MarkdownEditor.childContextTypes = {
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starred: PropTypes.bool,
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};
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const MaxWidth = styled(Flex)`
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max-width: 50em;
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height: 100%;
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`;
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const HeaderContainer = styled(Flex).attrs({
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align: 'flex-end',
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})`
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height: 100px;
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flex-shrink: 0;
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${({ readOnly }) => !readOnly && 'cursor: text;'}
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`;
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export default MarkdownEditor;
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