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Use custom guard to check if domNode is Element in RichTextElement re…
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- it is a (hopefully temporary) workaround for an issue where the recommended instanceof check doesn't work (see remarkablemark/html-react-parser#633)
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JiriLojda committed Nov 7, 2022
1 parent 49448b1 commit 062b4bf
Showing 1 changed file with 94 additions and 97 deletions.
191 changes: 94 additions & 97 deletions src/components/rich-text-element/index.tsx
Original file line number Diff line number Diff line change
@@ -1,145 +1,142 @@
import React from "react";
import parseHTML, { domToReact, DOMNode, HTMLReactParserOptions, Element } from "html-react-parser";
import React from 'react';
import parseHTML, { domToReact, DOMNode, HTMLReactParserOptions, Element } from 'html-react-parser';
import { Elements, IContentItem, ILink, IRichTextImage } from '@kontent-ai/delivery-sdk';

const IMAGE_ID_ATTRIBUTE_IDENTIFIER = "data-image-id";
const LINKED_ITEM_ID_ATTRIBUTE_IDENTIFIER = "data-item-id";
const IMAGE_ID_ATTRIBUTE_IDENTIFIER = 'data-image-id';
const LINKED_ITEM_ID_ATTRIBUTE_IDENTIFIER = 'data-item-id';

const isLinkedItem = (domNode: DOMNode): boolean => {
if (domNode instanceof Element) {
return domNode.tagName === "object" && domNode.attributes.find(attr => attr.name === "type")?.value === "application/kenticocloud";
}
return false;
}
// Use custom guard instead of the `instanceof` check because it seems to be broken now (see https://github.com/remarkablemark/html-react-parser/issues/633)
const isElement = (domNode: DOMNode): domNode is Element =>
domNode.type === 'tag';

const isImage = (domNode: DOMNode): boolean => {
if (domNode instanceof Element) {
return domNode.tagName === "figure" && domNode.attributes.find(attr => attr.name === IMAGE_ID_ATTRIBUTE_IDENTIFIER)?.value !== "undefined";
}
return false;
}
const isLinkedItem = (domNode: DOMNode): domNode is Element =>
isElement(domNode) &&
domNode.tagName === 'object' &&
domNode.attributes.find(attr => attr.name === 'type')?.value === 'application/kenticocloud';

const isLinkedItemLink = (domNode: DOMNode) => {
if (domNode instanceof Element) {
return domNode.tagName === "a" && domNode.attributes.find(attr => attr.name === LINKED_ITEM_ID_ATTRIBUTE_IDENTIFIER)?.value !== "undefined";
}
return false;
}
const isImage = (domNode: DOMNode): domNode is Element =>
isElement(domNode) &&
domNode.tagName === 'figure' &&
domNode.attributes.find(attr => attr.name === IMAGE_ID_ATTRIBUTE_IDENTIFIER)?.value !== 'undefined';

const isLinkedItemLink = (domNode: DOMNode): domNode is Element =>
isElement(domNode) &&
domNode.tagName === 'a' &&
domNode.attributes.find(attr => attr.name === LINKED_ITEM_ID_ATTRIBUTE_IDENTIFIER)?.value !== 'undefined';

export type DOMToReactFunction = (
nodes: DOMNode[],
options?: HTMLReactParserOptions | undefined
nodes: DOMNode[],
options?: HTMLReactParserOptions | undefined,
) => string | JSX.Element | JSX.Element[]


export type DomElementOptionsType = {
domElement: Element,
domToReact: DOMToReactFunction
domElement: Element,
domToReact: DOMToReactFunction
};

export type ResolveLinkedItemType = (
linkedItem: IContentItem | undefined,
domOptions: DomElementOptionsType
linkedItem: IContentItem | undefined,
domOptions: DomElementOptionsType,
) => JSX.Element | JSX.Element[] | undefined | null | false

export type ResolveImageType = (
image: IRichTextImage,
domOptions: DomElementOptionsType
image: IRichTextImage,
domOptions: DomElementOptionsType,
) => JSX.Element | JSX.Element[] | undefined | null | false

export type ResolveLinkType = (
link: ILink,
domOptions: DomElementOptionsType
link: ILink,
domOptions: DomElementOptionsType,
) => JSX.Element | JSX.Element[] | undefined | null | false

export type ResolveDomNodeType = (
domOptions: {
domNode: DOMNode,
domToReact: DOMToReactFunction
}
domOptions: {
domNode: DOMNode,
domToReact: DOMToReactFunction
},
) => JSX.Element | JSX.Element[] | undefined | null | false


const replaceNode = (
domNode: DOMNode,
richTextElement: Elements.RichTextElement,
resolveLinkedItem?: ResolveLinkedItemType,
resolveImage?: ResolveImageType,
resolveLink?: ResolveLinkType,
resolveDomNode?: ResolveDomNodeType,
domNode: DOMNode,
richTextElement: Elements.RichTextElement,
resolveLinkedItem?: ResolveLinkedItemType,
resolveImage?: ResolveImageType,
resolveLink?: ResolveLinkType,
resolveDomNode?: ResolveDomNodeType,
): JSX.Element | object | void | undefined | null | false => {

const { images, links } = richTextElement;
if (resolveLinkedItem && richTextElement.linkedItems) {
if (isLinkedItem(domNode)) {
const node = domNode as Element;
const codeName = node?.attributes.find(attr => attr.name === "data-codename")?.value;
const linkedItem = codeName ? richTextElement.linkedItems.find(item => item.system.codename === codeName) : undefined;
return resolveLinkedItem(linkedItem, { domElement: node, domToReact });
}
const { images, links } = richTextElement;
if (resolveLinkedItem && richTextElement.linkedItems) {
if (isLinkedItem(domNode)) {
const node = domNode;
const codeName = node?.attributes.find(attr => attr.name === 'data-codename')?.value;
const linkedItem = codeName ? richTextElement.linkedItems.find(item => item.system.codename === codeName)
: undefined;
return resolveLinkedItem(linkedItem, { domElement: node, domToReact });
}

if (resolveImage && images) {
if (isImage(domNode)) {
const node = domNode as Element;
const imageId = node?.attributes.find(attr => attr.name === IMAGE_ID_ATTRIBUTE_IDENTIFIER)?.value;
const image = images.find((image: { imageId: string }) => image.imageId === imageId);
if (image) {
return resolveImage(image, { domElement: node, domToReact });
}
}
}

if (resolveImage && images) {
if (isImage(domNode)) {
const node = domNode;
const imageId = node?.attributes.find(attr => attr.name === IMAGE_ID_ATTRIBUTE_IDENTIFIER)?.value;
const image = images.find((image: { imageId: string }) => image.imageId === imageId);
if (image) {
return resolveImage(image, { domElement: node, domToReact });
}
}
}

if (resolveLink && links) {
if (isLinkedItemLink(domNode)) {
const node = domNode as Element;
if (resolveLink && links) {
if (isLinkedItemLink(domNode)) {
const node = domNode;

const linkId = node?.attributes.find(attr => attr.name === LINKED_ITEM_ID_ATTRIBUTE_IDENTIFIER)?.value;
const link = links.find((link: { linkId: string }) => link.linkId === linkId);
if (link) {
return resolveLink(link, { domElement: node, domToReact });
}
}
const linkId = node?.attributes.find(attr => attr.name === LINKED_ITEM_ID_ATTRIBUTE_IDENTIFIER)?.value;
const link = links.find((link: { linkId: string }) => link.linkId === linkId);
if (link) {
return resolveLink(link, { domElement: node, domToReact });
}
}
}

if (resolveDomNode) {
return resolveDomNode({ domNode, domToReact });
}
}
if (resolveDomNode) {
return resolveDomNode({ domNode, domToReact });
}
};

export type ResolversType = {
resolveLinkedItem?: ResolveLinkedItemType;
resolveImage?: ResolveImageType;
resolveLink?: ResolveLinkType;
resolveDomNode?: ResolveDomNodeType;
resolveLinkedItem?: ResolveLinkedItemType;
resolveImage?: ResolveImageType;
resolveLink?: ResolveLinkType;
resolveDomNode?: ResolveDomNodeType;
}

export type IReactRichTextElementProps = {
richTextElement: Elements.RichTextElement,
resolvers?: ResolversType
richTextElement: Elements.RichTextElement,
resolvers?: ResolversType

};

const RichTextElement: React.FC<IReactRichTextElementProps> = ({
richTextElement,
resolvers: resolvers
export const RichTextElement: React.FC<IReactRichTextElementProps> = ({
richTextElement,
resolvers: resolvers,
}) => {

// To avoid type error in case resolvers is undefined
const {
resolveLinkedItem,
resolveImage,
resolveLink,
resolveDomNode,
} = { ...resolvers };

// To avoid type error in case resolvers is undefined
const {
resolveLinkedItem,
resolveImage,
resolveLink,
resolveDomNode,
} = { ...resolvers };

const cleanedValue = richTextElement.value.replace(/(\n|\r)+/, "");
const result = parseHTML(cleanedValue, {
replace: (domNode) => replaceNode(domNode, richTextElement, resolveLinkedItem, resolveImage, resolveLink, resolveDomNode),
});

return <>{result}</>;
}
const cleanedValue = richTextElement.value.replace(/(\n|\r)+/, '');
const result = parseHTML(cleanedValue, {
replace: (domNode) => replaceNode(domNode, richTextElement, resolveLinkedItem, resolveImage, resolveLink, resolveDomNode),
});

export { RichTextElement };
return <>{result}</>;
};

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