index.mjs
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"use client";
// packages/react/focus-scope/src/focus-scope.tsx
import * as React from "react";
import { useComposedRefs } from "@radix-ui/react-compose-refs";
import { Primitive } from "@radix-ui/react-primitive";
import { useCallbackRef } from "@radix-ui/react-use-callback-ref";
import { jsx } from "react/jsx-runtime";
var AUTOFOCUS_ON_MOUNT = "focusScope.autoFocusOnMount";
var AUTOFOCUS_ON_UNMOUNT = "focusScope.autoFocusOnUnmount";
var EVENT_OPTIONS = { bubbles: false, cancelable: true };
var FOCUS_SCOPE_NAME = "FocusScope";
var FocusScope = React.forwardRef((props, forwardedRef) => {
const {
loop = false,
trapped = false,
onMountAutoFocus: onMountAutoFocusProp,
onUnmountAutoFocus: onUnmountAutoFocusProp,
...scopeProps
} = props;
const [container, setContainer] = React.useState(null);
const onMountAutoFocus = useCallbackRef(onMountAutoFocusProp);
const onUnmountAutoFocus = useCallbackRef(onUnmountAutoFocusProp);
const lastFocusedElementRef = React.useRef(null);
const composedRefs = useComposedRefs(forwardedRef, (node) => setContainer(node));
const focusScope = React.useRef({
paused: false,
pause() {
this.paused = true;
},
resume() {
this.paused = false;
}
}).current;
React.useEffect(() => {
if (trapped) {
let handleFocusIn2 = function(event) {
if (focusScope.paused || !container) return;
const target = event.target;
if (container.contains(target)) {
lastFocusedElementRef.current = target;
} else {
focus(lastFocusedElementRef.current, { select: true });
}
}, handleFocusOut2 = function(event) {
if (focusScope.paused || !container) return;
const relatedTarget = event.relatedTarget;
if (relatedTarget === null) return;
if (!container.contains(relatedTarget)) {
focus(lastFocusedElementRef.current, { select: true });
}
}, handleMutations2 = function(mutations) {
const focusedElement = document.activeElement;
if (focusedElement !== document.body) return;
for (const mutation of mutations) {
if (mutation.removedNodes.length > 0) focus(container);
}
};
var handleFocusIn = handleFocusIn2, handleFocusOut = handleFocusOut2, handleMutations = handleMutations2;
document.addEventListener("focusin", handleFocusIn2);
document.addEventListener("focusout", handleFocusOut2);
const mutationObserver = new MutationObserver(handleMutations2);
if (container) mutationObserver.observe(container, { childList: true, subtree: true });
return () => {
document.removeEventListener("focusin", handleFocusIn2);
document.removeEventListener("focusout", handleFocusOut2);
mutationObserver.disconnect();
};
}
}, [trapped, container, focusScope.paused]);
React.useEffect(() => {
if (container) {
focusScopesStack.add(focusScope);
const previouslyFocusedElement = document.activeElement;
const hasFocusedCandidate = container.contains(previouslyFocusedElement);
if (!hasFocusedCandidate) {
const mountEvent = new CustomEvent(AUTOFOCUS_ON_MOUNT, EVENT_OPTIONS);
container.addEventListener(AUTOFOCUS_ON_MOUNT, onMountAutoFocus);
container.dispatchEvent(mountEvent);
if (!mountEvent.defaultPrevented) {
focusFirst(removeLinks(getTabbableCandidates(container)), { select: true });
if (document.activeElement === previouslyFocusedElement) {
focus(container);
}
}
}
return () => {
container.removeEventListener(AUTOFOCUS_ON_MOUNT, onMountAutoFocus);
setTimeout(() => {
const unmountEvent = new CustomEvent(AUTOFOCUS_ON_UNMOUNT, EVENT_OPTIONS);
container.addEventListener(AUTOFOCUS_ON_UNMOUNT, onUnmountAutoFocus);
container.dispatchEvent(unmountEvent);
if (!unmountEvent.defaultPrevented) {
focus(previouslyFocusedElement ?? document.body, { select: true });
}
container.removeEventListener(AUTOFOCUS_ON_UNMOUNT, onUnmountAutoFocus);
focusScopesStack.remove(focusScope);
}, 0);
};
}
}, [container, onMountAutoFocus, onUnmountAutoFocus, focusScope]);
const handleKeyDown = React.useCallback(
(event) => {
if (!loop && !trapped) return;
if (focusScope.paused) return;
const isTabKey = event.key === "Tab" && !event.altKey && !event.ctrlKey && !event.metaKey;
const focusedElement = document.activeElement;
if (isTabKey && focusedElement) {
const container2 = event.currentTarget;
const [first, last] = getTabbableEdges(container2);
const hasTabbableElementsInside = first && last;
if (!hasTabbableElementsInside) {
if (focusedElement === container2) event.preventDefault();
} else {
if (!event.shiftKey && focusedElement === last) {
event.preventDefault();
if (loop) focus(first, { select: true });
} else if (event.shiftKey && focusedElement === first) {
event.preventDefault();
if (loop) focus(last, { select: true });
}
}
}
},
[loop, trapped, focusScope.paused]
);
return /* @__PURE__ */ jsx(Primitive.div, { tabIndex: -1, ...scopeProps, ref: composedRefs, onKeyDown: handleKeyDown });
});
FocusScope.displayName = FOCUS_SCOPE_NAME;
function focusFirst(candidates, { select = false } = {}) {
const previouslyFocusedElement = document.activeElement;
for (const candidate of candidates) {
focus(candidate, { select });
if (document.activeElement !== previouslyFocusedElement) return;
}
}
function getTabbableEdges(container) {
const candidates = getTabbableCandidates(container);
const first = findVisible(candidates, container);
const last = findVisible(candidates.reverse(), container);
return [first, last];
}
function getTabbableCandidates(container) {
const nodes = [];
const walker = document.createTreeWalker(container, NodeFilter.SHOW_ELEMENT, {
acceptNode: (node) => {
const isHiddenInput = node.tagName === "INPUT" && node.type === "hidden";
if (node.disabled || node.hidden || isHiddenInput) return NodeFilter.FILTER_SKIP;
return node.tabIndex >= 0 ? NodeFilter.FILTER_ACCEPT : NodeFilter.FILTER_SKIP;
}
});
while (walker.nextNode()) nodes.push(walker.currentNode);
return nodes;
}
function findVisible(elements, container) {
for (const element of elements) {
if (!isHidden(element, { upTo: container })) return element;
}
}
function isHidden(node, { upTo }) {
if (getComputedStyle(node).visibility === "hidden") return true;
while (node) {
if (upTo !== void 0 && node === upTo) return false;
if (getComputedStyle(node).display === "none") return true;
node = node.parentElement;
}
return false;
}
function isSelectableInput(element) {
return element instanceof HTMLInputElement && "select" in element;
}
function focus(element, { select = false } = {}) {
if (element && element.focus) {
const previouslyFocusedElement = document.activeElement;
element.focus({ preventScroll: true });
if (element !== previouslyFocusedElement && isSelectableInput(element) && select)
element.select();
}
}
var focusScopesStack = createFocusScopesStack();
function createFocusScopesStack() {
let stack = [];
return {
add(focusScope) {
const activeFocusScope = stack[0];
if (focusScope !== activeFocusScope) {
activeFocusScope?.pause();
}
stack = arrayRemove(stack, focusScope);
stack.unshift(focusScope);
},
remove(focusScope) {
stack = arrayRemove(stack, focusScope);
stack[0]?.resume();
}
};
}
function arrayRemove(array, item) {
const updatedArray = [...array];
const index = updatedArray.indexOf(item);
if (index !== -1) {
updatedArray.splice(index, 1);
}
return updatedArray;
}
function removeLinks(items) {
return items.filter((item) => item.tagName !== "A");
}
var Root = FocusScope;
export {
FocusScope,
Root
};
//# sourceMappingURL=index.mjs.map