113 lines
2.6 KiB
JavaScript
113 lines
2.6 KiB
JavaScript
// @flow
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import * as React from 'react';
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import styled from 'styled-components';
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import { Block, Change, Node, Mark, Text } from 'slate';
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import RichMarkdownEditor, { Placeholder, schema } from 'rich-markdown-editor';
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import ClickablePadding from 'components/ClickablePadding';
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type Props = {
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titlePlaceholder: string,
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bodyPlaceholder: string,
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readOnly: boolean,
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};
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// add rules to the schema to ensure the first node is a heading
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schema.document.nodes.unshift({ types: ['heading1'], min: 1, max: 1 });
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schema.document.normalize = (
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change: Change,
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reason: string,
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{
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node,
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child,
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mark,
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index,
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}: { node: Node, mark?: Mark, child: Node, index: number }
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) => {
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switch (reason) {
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case 'child_type_invalid': {
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return change.setNodeByKey(
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child.key,
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index === 0 ? 'heading1' : 'paragraph'
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);
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}
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case 'child_required': {
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const block = Block.create(index === 0 ? 'heading1' : 'paragraph');
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return change.insertNodeByKey(node.key, index, block);
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}
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default:
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}
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};
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class Editor extends React.Component<Props> {
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editor: *;
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setEditorRef = (ref: RichMarkdownEditor) => {
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this.editor = ref;
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};
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focusAtEnd = () => {
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console.log(this.editor);
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if (this.editor) this.editor.focusAtEnd();
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};
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renderPlaceholder = (props: *) => {
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const { editor, node } = props;
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if (editor.state.isComposing) return;
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if (node.object !== 'block') return;
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if (!Text.isTextList(node.nodes)) return;
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if (node.text !== '') return;
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const index = editor.value.document.getBlocks().indexOf(node);
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if (index > 1) return;
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const text =
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index === 0 ? this.props.titlePlaceholder : this.props.bodyPlaceholder;
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return <Placeholder>{editor.props.readOnly ? '' : text}</Placeholder>;
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};
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render() {
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const { readOnly } = this.props;
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return (
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<React.Fragment>
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<StyledEditor
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innerRef={this.setEditorRef}
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renderPlaceholder={this.renderPlaceholder}
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schema={schema}
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{...this.props}
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/>
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<ClickablePadding
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onClick={!readOnly ? this.focusAtEnd : undefined}
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grow
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/>
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</React.Fragment>
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);
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}
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}
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// additional styles account for placeholder nodes not always re-rendering
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const StyledEditor = styled(RichMarkdownEditor)`
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display: flex;
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flex: 0;
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${Placeholder} {
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visibility: hidden;
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}
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h1:first-of-type {
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${Placeholder} {
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visibility: visible;
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}
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}
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p:nth-child(2):last-child {
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${Placeholder} {
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visibility: visible;
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}
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}
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`;
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export default Editor;
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