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with-local-selector.tsx
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with-local-selector.tsx
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// Copyright (c) 2022 Uber Technologies, Inc.
//
// 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 React, {Component} from 'react';
import {createSelector} from 'reselect';
import KeplerGlContext from 'components/context';
import {KeplerGlState} from 'reducers';
const identity = state => state;
const mergeSelectors = (parentSelector, childSelector) => state =>
childSelector(parentSelector(state));
// store the parent selector in the parent context
// and return the parent component
// when a selector is passed to a container component,
// it will be stored in the context and passed down to child components,
// as well as prop to the given component
const withLocalSelector = <P extends {}>(
ParentComponent: React.ComponentType<P>
): React.ComponentType<P & {selector: (...args: any[]) => KeplerGlState}> => {
class WithConnectSelector extends Component<P & {selector: (...args: any[]) => KeplerGlState}> {
static contextType = KeplerGlContext;
selectorFromContext = (_, ctx) => (ctx.selector ? ctx.selector : identity);
selectorFromProps = (props, _) => (props.selector ? props.selector : identity);
idFromProps = (props, _) => props.id;
computedSelector = createSelector(
this.selectorFromContext,
this.selectorFromProps,
(ctx, props) => mergeSelectors(ctx, props)
);
contextSelector = createSelector(this.computedSelector, this.idFromProps, (selector, id) => ({
selector,
id
}));
render() {
const computedContext = this.contextSelector(this.props, this.context);
return (
<KeplerGlContext.Provider value={computedContext}>
<ParentComponent {...this.props} selector={computedContext.selector} />
</KeplerGlContext.Provider>
);
}
}
return WithConnectSelector;
};
export default withLocalSelector;