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ExtensionPoint.tsx
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ExtensionPoint.tsx
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/*
* MIT License
*
* Copyright (c) 2020-present Cloudogu GmbH and Contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
import * as React from "react";
import { Binder } from "./binder";
import { FC, ReactNode } from "react";
import useBinder from "./useBinder";
type PropTransformer = (props: object) => object;
type Props = {
name: string;
renderAll?: boolean;
props?: object;
propTransformer?: PropTransformer;
};
const createInstance = (Component: any, props: object, key?: number) => {
const instanceProps = {
...props,
key
};
if (React.isValidElement(Component)) {
return React.cloneElement(Component, instanceProps);
}
return <Component {...instanceProps} />;
};
const renderAllExtensions = (binder: Binder, name: string, props: object) => {
const extensions = binder.getExtensions(name, props);
return <>{extensions.map((cmp, index) => createInstance(cmp, fixLinksInProps(props), index))}</>;
};
const renderSingleExtension = (binder: Binder, name: string, props: object) => {
const cmp = binder.getExtension(name, fixLinksInProps(props));
if (!cmp) {
return null;
}
return createInstance(cmp, props, undefined);
};
// In release 2.14.0, the link collection in the index resource is no longer available under 'links', but
// only under '_links". Therefore plugins expecting the collection in the property without the underscore
// did no longer work properly. This copies the link collection from '_links' to 'links' to fix this issue.
const fixLinksInProps = (props: object) => {
// @ts-ignore
if (props?.indexResources?._links) {
// @ts-ignore
return { ...props, indexResources: { ...props.indexResources, links: props.indexResources._links } };
} else {
return props;
}
};
const renderDefault = (children: ReactNode) => {
if (children) {
return <>{children}</>;
}
return null;
};
const createRenderProps = (propTransformer?: PropTransformer, props?: object) => {
const transform = (props: object) => {
if (!propTransformer) {
return props;
}
return propTransformer(props);
};
return transform(props || {});
};
/**
* ExtensionPoint renders components which are bound to an extension point.
*/
const ExtensionPoint: FC<Props> = ({ name, propTransformer, props, renderAll, children }) => {
const binder = useBinder();
const renderProps = createRenderProps(propTransformer, props);
if (!binder.hasExtension(name, renderProps)) {
return renderDefault(children);
} else if (renderAll) {
return renderAllExtensions(binder, name, renderProps);
}
return renderSingleExtension(binder, name, renderProps);
};
export default ExtensionPoint;