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Add subnode renderer

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Signed-off-by: Tilman Vatteroth <tilman.vatteroth@tu-dortmund.de>
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Tilman Vatteroth 2020-06-21 12:00:21 +02:00 committed by mrdrogdrog
parent 2d4ecf6527
commit cb2ea5fa6e
1 changed files with 7 additions and 4 deletions
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11
src/components/editor/markdown-renderer/markdown-renderer.tsx
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@ -34,15 +34,16 @@ export interface MarkdownPreviewProps {
content: string
}
export type ComponentReplacer = (node: DomElement, counterMap: Map<string, number>) => (ReactElement | undefined);
export type SubNodeConverter = (node: DomElement, index: number) => ReactElement
export type ComponentReplacer = (node: DomElement, counterMap: Map<string, number>, nodeConverter: SubNodeConverter) => (ReactElement | undefined);
const allComponentReplacers: ComponentReplacer[] = [getYouTubeReplacement, getVimeoReplacement, getGistReplacement, getPDFReplacement]
type ComponentReplacer2Identifier2CounterMap = Map<ComponentReplacer, Map<string, number>>
const tryToReplaceNode = (node: DomElement, componentReplacer2Identifier2CounterMap: ComponentReplacer2Identifier2CounterMap) => {
const tryToReplaceNode = (node: DomElement, componentReplacer2Identifier2CounterMap: ComponentReplacer2Identifier2CounterMap, nodeConverter: SubNodeConverter) => {
return allComponentReplacers
.map((componentReplacer) => {
const identifier2CounterMap = componentReplacer2Identifier2CounterMap.get(componentReplacer) || new Map<string, number>()
return componentReplacer(node, identifier2CounterMap)
return componentReplacer(node, identifier2CounterMap, nodeConverter)
})
.find((replacement) => !!replacement)
}
@ -86,7 +87,9 @@ const MarkdownRenderer: React.FC<MarkdownPreviewProps> = ({ content }) => {
const componentReplacer2Identifier2CounterMap = new Map<ComponentReplacer, Map<string, number>>()
const html: string = markdownIt.render(content)
const transform: Transform = (node, index) => {
return tryToReplaceNode(node, componentReplacer2Identifier2CounterMap) || convertNodeToElement(node, index, transform)
const maybeReplacement = tryToReplaceNode(node, componentReplacer2Identifier2CounterMap,
(subNode, subIndex) => convertNodeToElement(subNode, subIndex, transform))
return maybeReplacement || convertNodeToElement(node, index, transform)
}
return ReactHtmlParser(html, { transform: transform })
}, [content, markdownIt])