@blueprintjs/core
Version:
Core styles & components
41 lines • 1.7 kB
JavaScript
/*
* Copyright 2024 Palantir Technologies, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import * as React from "react";
/**
* A React context used to interact with the overlay stack in an application.
* Users should take care to make sure that only _one_ of these is instantiated and used within an
* application.
*
* You will likely not be using this OverlaysContext directly, it's mostly used internally by the
* Overlay2 component.
*
* For more information, see the [OverlaysProvider documentation](https://blueprintjs.com/docs/#core/context/overlays-provider).
*/
export const OverlaysContext = React.createContext({
hasProvider: false,
stack: { current: [] },
});
/**
* Overlays context provider, necessary for the `useOverlayStack` hook.
*
* @see https://blueprintjs.com/docs/#core/context/overlays-provider
*/
export const OverlaysProvider = ({ children }) => {
const stack = React.useRef([]);
const contextValue = React.useMemo(() => ({ hasProvider: true, stack }), [stack]);
return React.createElement(OverlaysContext.Provider, { value: contextValue }, children);
};
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