import { forwardRef as N } from '../../../preact/compat/dist/compat.module.mjs';
import { composeEventHandlers } from '../../primitive/dist/index.mjs';
import { createCollection } from '../../react-collection/dist/index.mjs';
import { useComposedRefs } from '../../react-compose-refs/dist/index.mjs';
import { createContextScope } from '../../react-context/dist/index.mjs';
import { useId } from '../../react-id/dist/index.mjs';
import { Primitive } from '../../react-primitive/dist/index.mjs';
import { useCallbackRef } from '../../react-use-callback-ref/dist/index.mjs';
import { useControllableState } from '../../react-use-controllable-state/dist/index.mjs';
import { useDirection } from '../../react-direction/dist/index.mjs';
import { jsx as u } from '../../../preact/jsx-runtime/dist/jsxRuntime.module.mjs';
import { useEffect as p, useRef as _, useState as h, useCallback as T } from '../../../preact/hooks/dist/hooks.module.mjs';

var ENTRY_FOCUS = "rovingFocusGroup.onEntryFocus";
var EVENT_OPTIONS = { bubbles: false, cancelable: true };
var GROUP_NAME = "RovingFocusGroup";
var [Collection, useCollection, createCollectionScope] = createCollection(GROUP_NAME);
var [createRovingFocusGroupContext, createRovingFocusGroupScope] = createContextScope(
  GROUP_NAME,
  [createCollectionScope]
);
var [RovingFocusProvider, useRovingFocusContext] = createRovingFocusGroupContext(GROUP_NAME);
var RovingFocusGroup = N(
  (props, forwardedRef) => {
    return /* @__PURE__ */ u(Collection.Provider, { scope: props.__scopeRovingFocusGroup, children: /* @__PURE__ */ u(Collection.Slot, { scope: props.__scopeRovingFocusGroup, children: /* @__PURE__ */ u(RovingFocusGroupImpl, { ...props, ref: forwardedRef }) }) });
  }
);
RovingFocusGroup.displayName = GROUP_NAME;
var RovingFocusGroupImpl = N((props, forwardedRef) => {
  const {
    __scopeRovingFocusGroup,
    orientation,
    loop = false,
    dir,
    currentTabStopId: currentTabStopIdProp,
    defaultCurrentTabStopId,
    onCurrentTabStopIdChange,
    onEntryFocus,
    preventScrollOnEntryFocus = false,
    ...groupProps
  } = props;
  const ref = _(null);
  const composedRefs = useComposedRefs(forwardedRef, ref);
  const direction = useDirection(dir);
  const [currentTabStopId, setCurrentTabStopId] = useControllableState({
    prop: currentTabStopIdProp,
    defaultProp: defaultCurrentTabStopId ?? null,
    onChange: onCurrentTabStopIdChange,
    caller: GROUP_NAME
  });
  const [isTabbingBackOut, setIsTabbingBackOut] = h(false);
  const handleEntryFocus = useCallbackRef(onEntryFocus);
  const getItems = useCollection(__scopeRovingFocusGroup);
  const isClickFocusRef = _(false);
  const [focusableItemsCount, setFocusableItemsCount] = h(0);
  p(() => {
    const node = ref.current;
    if (node) {
      node.addEventListener(ENTRY_FOCUS, handleEntryFocus);
      return () => node.removeEventListener(ENTRY_FOCUS, handleEntryFocus);
    }
  }, [handleEntryFocus]);
  return /* @__PURE__ */ u(
    RovingFocusProvider,
    {
      scope: __scopeRovingFocusGroup,
      orientation,
      dir: direction,
      loop,
      currentTabStopId,
      onItemFocus: T(
        (tabStopId) => setCurrentTabStopId(tabStopId),
        [setCurrentTabStopId]
      ),
      onItemShiftTab: T(() => setIsTabbingBackOut(true), []),
      onFocusableItemAdd: T(
        () => setFocusableItemsCount((prevCount) => prevCount + 1),
        []
      ),
      onFocusableItemRemove: T(
        () => setFocusableItemsCount((prevCount) => prevCount - 1),
        []
      ),
      children: /* @__PURE__ */ u(
        Primitive.div,
        {
          tabIndex: isTabbingBackOut || focusableItemsCount === 0 ? -1 : 0,
          "data-orientation": orientation,
          ...groupProps,
          ref: composedRefs,
          style: { outline: "none", ...props.style },
          onMouseDown: composeEventHandlers(props.onMouseDown, () => {
            isClickFocusRef.current = true;
          }),
          onFocus: composeEventHandlers(props.onFocus, (event) => {
            const isKeyboardFocus = !isClickFocusRef.current;
            if (event.target === event.currentTarget && isKeyboardFocus && !isTabbingBackOut) {
              const entryFocusEvent = new CustomEvent(ENTRY_FOCUS, EVENT_OPTIONS);
              event.currentTarget.dispatchEvent(entryFocusEvent);
              if (!entryFocusEvent.defaultPrevented) {
                const items = getItems().filter((item) => item.focusable);
                const activeItem = items.find((item) => item.active);
                const currentItem = items.find((item) => item.id === currentTabStopId);
                const candidateItems = [activeItem, currentItem, ...items].filter(
                  Boolean
                );
                const candidateNodes = candidateItems.map((item) => item.ref.current);
                focusFirst(candidateNodes, preventScrollOnEntryFocus);
              }
            }
            isClickFocusRef.current = false;
          }),
          onBlur: composeEventHandlers(props.onBlur, () => setIsTabbingBackOut(false))
        }
      )
    }
  );
});
var ITEM_NAME = "RovingFocusGroupItem";
var RovingFocusGroupItem = N(
  (props, forwardedRef) => {
    const {
      __scopeRovingFocusGroup,
      focusable = true,
      active = false,
      tabStopId,
      children,
      ...itemProps
    } = props;
    const autoId = useId();
    const id = tabStopId || autoId;
    const context = useRovingFocusContext(ITEM_NAME, __scopeRovingFocusGroup);
    const isCurrentTabStop = context.currentTabStopId === id;
    const getItems = useCollection(__scopeRovingFocusGroup);
    const { onFocusableItemAdd, onFocusableItemRemove, currentTabStopId } = context;
    p(() => {
      if (focusable) {
        onFocusableItemAdd();
        return () => onFocusableItemRemove();
      }
    }, [focusable, onFocusableItemAdd, onFocusableItemRemove]);
    return /* @__PURE__ */ u(
      Collection.ItemSlot,
      {
        scope: __scopeRovingFocusGroup,
        id,
        focusable,
        active,
        children: /* @__PURE__ */ u(
          Primitive.span,
          {
            tabIndex: isCurrentTabStop ? 0 : -1,
            "data-orientation": context.orientation,
            ...itemProps,
            ref: forwardedRef,
            onMouseDown: composeEventHandlers(props.onMouseDown, (event) => {
              if (!focusable) event.preventDefault();
              else context.onItemFocus(id);
            }),
            onFocus: composeEventHandlers(props.onFocus, () => context.onItemFocus(id)),
            onKeyDown: composeEventHandlers(props.onKeyDown, (event) => {
              if (event.key === "Tab" && event.shiftKey) {
                context.onItemShiftTab();
                return;
              }
              if (event.target !== event.currentTarget) return;
              const focusIntent = getFocusIntent(event, context.orientation, context.dir);
              if (focusIntent !== void 0) {
                if (event.metaKey || event.ctrlKey || event.altKey || event.shiftKey) return;
                event.preventDefault();
                const items = getItems().filter((item) => item.focusable);
                let candidateNodes = items.map((item) => item.ref.current);
                if (focusIntent === "last") candidateNodes.reverse();
                else if (focusIntent === "prev" || focusIntent === "next") {
                  if (focusIntent === "prev") candidateNodes.reverse();
                  const currentIndex = candidateNodes.indexOf(event.currentTarget);
                  candidateNodes = context.loop ? wrapArray(candidateNodes, currentIndex + 1) : candidateNodes.slice(currentIndex + 1);
                }
                setTimeout(() => focusFirst(candidateNodes));
              }
            }),
            children: typeof children === "function" ? children({ isCurrentTabStop, hasTabStop: currentTabStopId != null }) : children
          }
        )
      }
    );
  }
);
RovingFocusGroupItem.displayName = ITEM_NAME;
var MAP_KEY_TO_FOCUS_INTENT = {
  ArrowLeft: "prev",
  ArrowUp: "prev",
  ArrowRight: "next",
  ArrowDown: "next",
  PageUp: "first",
  Home: "first",
  PageDown: "last",
  End: "last"
};
function getDirectionAwareKey(key, dir) {
  if (dir !== "rtl") return key;
  return key === "ArrowLeft" ? "ArrowRight" : key === "ArrowRight" ? "ArrowLeft" : key;
}
function getFocusIntent(event, orientation, dir) {
  const key = getDirectionAwareKey(event.key, dir);
  if (orientation === "vertical" && ["ArrowLeft", "ArrowRight"].includes(key)) return void 0;
  if (orientation === "horizontal" && ["ArrowUp", "ArrowDown"].includes(key)) return void 0;
  return MAP_KEY_TO_FOCUS_INTENT[key];
}
function focusFirst(candidates, preventScroll = false) {
  const PREVIOUSLY_FOCUSED_ELEMENT = getActiveElement();
  for (const candidate of candidates) {
    if (candidate === PREVIOUSLY_FOCUSED_ELEMENT) return;
    candidate.focus({ preventScroll });
    if (getActiveElement() !== PREVIOUSLY_FOCUSED_ELEMENT) return;
  }
}
function wrapArray(array, startIndex) {
  return array.map((_, index) => array[(startIndex + index) % array.length]);
}
var Root = RovingFocusGroup;
var Item = RovingFocusGroupItem;
function getActiveElement(root = document) {
  const activeElement = root.activeElement;
  return activeElement && activeElement.shadowRoot ? getActiveElement(activeElement.shadowRoot) : activeElement;
}

export { Item, Root, RovingFocusGroup, RovingFocusGroupItem, createRovingFocusGroupScope };
//# sourceMappingURL=index.mjs.map
