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| Original file line number | Diff line number | Diff line change |
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| // Copyright (c) 2024 The Brave Authors. All rights reserved. | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this file, | ||
| // You can obtain one at https://mozilla.org/MPL/2.0/. | ||
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| import { useEffect } from "react"; | ||
| import * as React from "react"; | ||
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| export type NavigationParams = { [key: string]: string | undefined } | ||
| export type Routes = Map<string, (undefined | ((params: NavigationParams) => void))[]>; | ||
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| export interface NavigationContext { | ||
| params: NavigationParams | ||
| addRoute: (route: string, callback?: (params: any) => void) => void | ||
| removeRoute: (route: string, callback?: (params: any) => void) => void | ||
| } | ||
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| const Context = React.createContext<NavigationContext>({ | ||
| params: {}, | ||
| addRoute: () => { }, | ||
| removeRoute: () => { } | ||
| }) | ||
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| const getParamName = (part: string) => { | ||
| if (part.startsWith("{") && part.endsWith("}")) { | ||
| return part.substring(1, part.length - 1) | ||
| } | ||
| return null | ||
| } | ||
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| const findMatchingRoute = (url: string, routes: Routes) => { | ||
| const path = new URL(url).pathname | ||
| const pathParts = path.split('/') | ||
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| for (const [path, handler] of routes.entries()) { | ||
| const routeParts = path.split('/') | ||
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| if (routeParts.length !== pathParts.length) continue | ||
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| let isMatch = true | ||
| const params: { [key: string]: string } = {} | ||
| for (let i = 0; i < pathParts.length; ++i) { | ||
| const routePart = routeParts[i] | ||
| const pathPart = pathParts[i] | ||
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| const paramName = getParamName(routePart) | ||
| // If its a param, store the value | ||
| if (paramName) { | ||
| params[paramName] = pathPart | ||
| } else if (routePart !== pathPart) { | ||
| // The path doesn't match, so bail | ||
| isMatch = false | ||
| break | ||
| } | ||
| } | ||
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| if (isMatch) { | ||
| return [handler, params] as const | ||
| } | ||
| } | ||
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| // Couldn't find a handler | ||
| return [null, {}] as const | ||
| } | ||
|
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| export function useParams<T extends NavigationParams = NavigationParams>() { | ||
| return React.useContext(Context).params as T | ||
| } | ||
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| export function useNavigation<T extends NavigationParams = NavigationParams>() { | ||
| return React.useContext(Context) as NavigationContext & { params: T } | ||
| } | ||
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| export function NavigationContext(props: React.PropsWithChildren) { | ||
| const routes = React.useRef<Routes>(new Map()) | ||
| const [params, setParams] = React.useState<NavigationParams>({}) | ||
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| useEffect(() => { | ||
| const handler = (e: NavigateEvent) => { | ||
| const [handler, params] = findMatchingRoute(e.destination.url, routes.current) | ||
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| if (!handler) { | ||
| setParams({}) | ||
| return | ||
| } | ||
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| setParams(params) | ||
| e.intercept({ | ||
| handler: async () => { | ||
| for (const callback of handler) { | ||
| callback?.(params) | ||
| } | ||
| } | ||
| }) | ||
| } | ||
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| window.navigation.addEventListener('navigate', handler) | ||
| return () => { | ||
| window.navigation.removeEventListener('navigate', handler) | ||
| } | ||
| }, []) | ||
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| const addRoute = React.useCallback((route: string, callback?: (params: NavigationParams) => void) => { | ||
| if (!routes.current.has(route)) { | ||
| routes.current.set(route, []) | ||
| } | ||
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| routes.current.get(route)!.push(callback) | ||
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| setParams(findMatchingRoute(location.href, routes.current)[1]) | ||
| }, []) | ||
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| const removeRoute = React.useCallback((route: string, callback?: (params: NavigationParams) => void) => { | ||
| const callbacks = routes.current.get(route) ?? [] | ||
| const index = callbacks.indexOf(callback) | ||
| if (index !== -1) { | ||
| callbacks.splice(index, 1) | ||
| } | ||
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| if (callbacks.length === 0) { | ||
| routes.current.delete(route) | ||
| } | ||
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| setParams(findMatchingRoute(location.href, routes.current)[1]) | ||
| }, []) | ||
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| return <Context.Provider value={{ params, addRoute, removeRoute }} > | ||
| {props.children} | ||
| </Context.Provider> | ||
| } |