one/dist/esm/views/ScrollBehavior.native.js

One is a React framework for web, iOS, and Android apps.

import { useIsFocused } from "@react-navigation/core";
import { useContext, useEffect, useLayoutEffect } from "react";
import { RouteInfoContext } from "../router/RouteInfoContext.native.js";
import { setLastAction } from "../router/lastAction.native.js";
import { routeInfo, subscribeToLoadingState, subscribeToRootState } from "../router/router.native.js";

var KEY = "one-sr";
var GROUP_KEY = "one-sr-groups";
var getState = function getState2() {
	return JSON.parse(sessionStorage.getItem(KEY) || "{}");
};
var getGroupState = function getGroupState2() {
	return JSON.parse(sessionStorage.getItem(GROUP_KEY) || "{}");
};
var activeGroups = /* @__PURE__ */ new Set();
function registerScrollGroup(groupId) {
	activeGroups.add(groupId);
	return function() {
		activeGroups.delete(groupId);
	};
}
function getGroupKey(pathname) {
	var longestMatch = null;
	var _iteratorNormalCompletion = true, _didIteratorError = false, _iteratorError = void 0;
	try {
		for (var _iterator = activeGroups[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
			var group = _step.value;
			if ((pathname === group || pathname.startsWith(`${group}/`)) && (!longestMatch || group.length > longestMatch.length)) {
				longestMatch = group;
			}
		}
	} catch (err) {
		_didIteratorError = true;
		_iteratorError = err;
	} finally {
		try {
			if (!_iteratorNormalCompletion && _iterator.return != null) {
				_iterator.return();
			}
		} finally {
			if (_didIteratorError) {
				throw _iteratorError;
			}
		}
	}
	return longestMatch;
}
function restorePosition(pathname) {
	try {
		var positions = getState();
		var saved = positions[pathname];
		if (typeof saved === "number") {
			setTimeout(function() {
				window.scrollTo(0, saved);
			});
		}
	} catch (error) {
		console.error(`Error restoring scroll position`, error);
		sessionStorage.removeItem(KEY);
	}
}
function restoreGroupPosition(groupId) {
	try {
		var positions = getGroupState();
		var saved = positions[groupId];
		if (typeof saved === "number") {
			setTimeout(function() {
				window.scrollTo(0, saved);
			});
		}
	} catch (error) {
		console.error(`Error restoring scroll position for group ${groupId}`, error);
		sessionStorage.removeItem(GROUP_KEY);
	}
}
var didPop = false;
var previousPathname = null;
function rememberScrollPosition() {
	didPop = false;
	var pathname = window.location.pathname;
	var state = getState();
	state[pathname] = window.scrollY;
	sessionStorage.setItem(KEY, JSON.stringify(state));
	var groupKey = getGroupKey(pathname);
	if (groupKey) {
		var groupState = getGroupState();
		groupState[groupKey] = window.scrollY;
		sessionStorage.setItem(GROUP_KEY, JSON.stringify(groupState));
	}
	previousPathname = pathname;
}
var disable = null;
var pendingScroll = null;
var committedHref;
function ScrollBehaviorRouteCommit() {
	var info = useContext(RouteInfoContext);
	var href = info === null || info === void 0 ? void 0 : info.unstable_globalHref;
	var focused = useIsFocused();
	useLayoutEffect(function() {
		if (!focused) return;
		committedHref = href;
		if (pendingScroll && pendingScroll.href === href) {
			var { apply } = pendingScroll;
			pendingScroll = null;
			apply();
		}
	});
	return null;
}
function configure(props) {
	if (typeof window === "undefined" || !window.addEventListener) {
		return;
	}
	disable === null || disable === void 0 ? void 0 : disable();
	var initialLocation = `${window.location.pathname}${window.location.search}`;
	var isFirstStateChange = true;
	var handledLocation = initialLocation;
	previousPathname = window.location.pathname;
	var popStateController = new AbortController();
	window.addEventListener("popstate", function() {
		didPop = true;
		setLastAction();
	}, { signal: popStateController.signal });
	var disposeOnLoadState = subscribeToLoadingState(function(state) {
		if (state === "loading") {
			rememberScrollPosition();
		}
	});
	var disposeOnRootState = subscribeToRootState(function(state) {
		var _ref, _ref1;
		var _state_linkOptions, _state_linkOptions1;
		var currentHref = (_ref = routeInfo === null || routeInfo === void 0 ? void 0 : routeInfo.unstable_globalHref) !== null && _ref !== void 0 ? _ref : "";
		var currentPathname = (_ref1 = routeInfo === null || routeInfo === void 0 ? void 0 : routeInfo.pathname) !== null && _ref1 !== void 0 ? _ref1 : "";
		if (isFirstStateChange) {
			isFirstStateChange = false;
			if (currentHref === initialLocation) {
				return;
			}
		}
		var { hash } = state;
		var location = `${currentHref}${hash || ""}`;
		if (location === handledLocation) {
			pendingScroll = null;
			return;
		}
		pendingScroll = null;
		if (((_state_linkOptions = state.linkOptions) === null || _state_linkOptions === void 0 ? void 0 : _state_linkOptions.scroll) === false) {
			handledLocation = location;
			previousPathname = currentPathname;
			return;
		}
		var restoring = didPop;
		var prevGroup = previousPathname ? getGroupKey(previousPathname) : null;
		var currentGroup = getGroupKey(currentPathname);
		var scrollGroup = (_state_linkOptions1 = state.linkOptions) === null || _state_linkOptions1 === void 0 ? void 0 : _state_linkOptions1.scrollGroup;
		pendingScroll = {
			href: currentHref,
			apply: function apply2() {
				handledLocation = location;
				previousPathname = currentPathname;
				if (hash) {
					scrollToHash(hash);
				} else if (restoring) {
					if (props.disable !== "restore") {
						restorePosition(currentPathname);
					}
				} else if (prevGroup && currentGroup && prevGroup === currentGroup) {
					restoreGroupPosition(currentGroup);
				} else if (scrollGroup) {
					restoreGroupPosition(scrollGroup);
				} else {
					window.scrollTo(0, 0);
				}
			}
		};
		if (committedHref === currentHref) {
			var { apply } = pendingScroll;
			pendingScroll = null;
			apply();
		}
	});
	disable = function disable2() {
		pendingScroll = null;
		popStateController.abort();
		disposeOnLoadState();
		disposeOnRootState();
	};
	return disable;
}
function scrollToHash(hash) {
	if (!hash || !hash.startsWith("#")) return;
	var id = hash.slice(1);
	var el = document.getElementById(id);
	if (!el) return;
	el.scrollIntoView({ behavior: "instant" });
}
function ScrollBehavior(props) {
	if (process.env.VITE_ENVIRONMENT === "client") {
		useEffect(function() {
			if (window.location.hash) {
				scrollToHash(window.location.hash);
			}
		}, []);
		useEffect(function() {
			return configure(props);
		}, [props.disable]);
	}
	return null;
}

export { ScrollBehavior, ScrollBehaviorRouteCommit, registerScrollGroup };
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