@primer/react/dist/FilteredActionList/useAnnouncements.js

An implementation of GitHub's Primer Design System using React

import { c } from 'react-compiler-runtime';
import { announce } from '@primer/live-region-element';
import { useEffect, useRef } from 'react';

// we add a delay so that it does not interrupt default screen reader announcement and queues after it
const delayMs = 500;
const useFirstRender = () => {
  const firstRender = useRef(true);
  useEffect(() => {
    firstRender.current = false;
  }, []);
  // eslint-disable-next-line react-hooks/refs
  return firstRender.current;
};
const getItemWithActiveDescendant = (listRef, items) => {
  const listElement = listRef.current;
  const activeItemElement = listElement === null || listElement === void 0 ? void 0 : listElement.querySelector('[data-is-active-descendant]');
  if (!listElement || !(activeItemElement !== null && activeItemElement !== void 0 && activeItemElement.textContent)) return;
  const optionElements = listElement.querySelectorAll('[role="option"]');
  const index = Array.from(optionElements).indexOf(activeItemElement);
  const activeItem = items[index];
  const text = activeItem === null || activeItem === void 0 ? void 0 : activeItem.text;
  const selected = activeItem === null || activeItem === void 0 ? void 0 : activeItem.selected;
  return {
    index,
    text,
    selected
  };
};
const useAnnouncements = (items, listContainerRef, inputRef, t0, t1, message, focusManagement) => {
  const $ = c(33);
  const enabled = t0 === undefined ? true : t0;
  const loading = t1 === undefined ? false : t1;
  const usingRovingTabindex = focusManagement === "roving-tabindex";
  let t2;
  if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
    t2 = document.querySelector("live-region");
    $[0] = t2;
  } else {
    t2 = $[0];
  }
  const liveRegion = t2;
  let t3;
  if ($[1] !== items) {
    t3 = items.filter(_temp);
    $[1] = items;
    $[2] = t3;
  } else {
    t3 = $[2];
  }
  const selectedItems = t3.length;
  let t4;
  if ($[3] !== enabled) {
    t4 = (...t5) => {
      const args = t5;
      if (enabled) {
        return announce(...args);
      }
    };
    $[3] = enabled;
    $[4] = t4;
  } else {
    t4 = $[4];
  }
  const announce$1 = t4;
  let t5;
  let t6;
  if ($[5] !== announce$1 || $[6] !== inputRef || $[7] !== items || $[8] !== listContainerRef || $[9] !== selectedItems || $[10] !== usingRovingTabindex) {
    t5 = function announceInitialFocus() {
      const focusHandler = () => {
        if (usingRovingTabindex) {
          const announcementText = `${items.length} item${items.length > 1 ? "s" : ""} available, ${selectedItems} selected.`;
          announce$1(announcementText, {
            delayMs,
            from: liveRegion ? liveRegion : undefined
          });
        } else {
          window.requestAnimationFrame(() => {
            const activeItem = getItemWithActiveDescendant(listContainerRef, items);
            if (!activeItem) {
              return;
            }
            const {
              index,
              text,
              selected
            } = activeItem;
            const announcementText_0 = ["Focus on filter text box and list of items", `Focused item: ${text}`, `${selected ? "selected" : "not selected"}`, `${index + 1} of ${items.length}`].join(", ");
            announce$1(announcementText_0, {
              delayMs,
              from: liveRegion ? liveRegion : undefined
            });
          });
        }
      };
      const inputElement = inputRef.current;
      inputElement === null || inputElement === void 0 ? void 0 : inputElement.addEventListener("focus", focusHandler);
      return () => inputElement === null || inputElement === void 0 ? void 0 : inputElement.removeEventListener("focus", focusHandler);
    };
    t6 = [listContainerRef, inputRef, items, liveRegion, announce$1, usingRovingTabindex, selectedItems];
    $[5] = announce$1;
    $[6] = inputRef;
    $[7] = items;
    $[8] = listContainerRef;
    $[9] = selectedItems;
    $[10] = usingRovingTabindex;
    $[11] = t5;
    $[12] = t6;
  } else {
    t5 = $[11];
    t6 = $[12];
  }
  useEffect(t5, t6);
  const isFirstRender = useFirstRender();
  let t7;
  if ($[13] !== announce$1 || $[14] !== isFirstRender || $[15] !== items || $[16] !== listContainerRef || $[17] !== loading || $[18] !== (message === null || message === void 0 ? void 0 : message.description) || $[19] !== (message === null || message === void 0 ? void 0 : message.title) || $[20] !== selectedItems || $[21] !== usingRovingTabindex) {
    t7 = function announceListUpdates() {
      if (isFirstRender) {
        return;
      }
      liveRegion === null || liveRegion === void 0 ? void 0 : liveRegion.clear();
      if (items.length === 0 && !loading) {
        announce$1(`${message === null || message === void 0 ? void 0 : message.title}. ${message === null || message === void 0 ? void 0 : message.description}`, {
          delayMs
        });
        return;
      }
      if (usingRovingTabindex) {
        const announcementText_1 = `${items.length} item${items.length > 1 ? "s" : ""} available, ${selectedItems} selected.`;
        announce$1(announcementText_1, {
          delayMs,
          from: liveRegion ? liveRegion : undefined
        });
      } else {
        window.requestAnimationFrame(() => {
          const activeItem_0 = getItemWithActiveDescendant(listContainerRef, items);
          if (!activeItem_0) {
            return;
          }
          const {
            index: index_0,
            text: text_0,
            selected: selected_0
          } = activeItem_0;
          const announcementText_2 = ["List updated", `Focused item: ${text_0}`, `${selected_0 ? "selected" : "not selected"}`, `${index_0 + 1} of ${items.length}`].join(", ");
          announce$1(announcementText_2, {
            delayMs,
            from: liveRegion ? liveRegion : undefined
          });
        });
      }
    };
    $[13] = announce$1;
    $[14] = isFirstRender;
    $[15] = items;
    $[16] = listContainerRef;
    $[17] = loading;
    $[18] = message === null || message === void 0 ? void 0 : message.description;
    $[19] = message === null || message === void 0 ? void 0 : message.title;
    $[20] = selectedItems;
    $[21] = usingRovingTabindex;
    $[22] = t7;
  } else {
    t7 = $[22];
  }
  const t8 = message === null || message === void 0 ? void 0 : message.title;
  const t9 = message === null || message === void 0 ? void 0 : message.description;
  let t10;
  if ($[23] !== announce$1 || $[24] !== isFirstRender || $[25] !== items || $[26] !== listContainerRef || $[27] !== loading || $[28] !== selectedItems || $[29] !== t8 || $[30] !== t9 || $[31] !== usingRovingTabindex) {
    t10 = [announce$1, isFirstRender, items, listContainerRef, liveRegion, usingRovingTabindex, t8, t9, loading, selectedItems];
    $[23] = announce$1;
    $[24] = isFirstRender;
    $[25] = items;
    $[26] = listContainerRef;
    $[27] = loading;
    $[28] = selectedItems;
    $[29] = t8;
    $[30] = t9;
    $[31] = usingRovingTabindex;
    $[32] = t10;
  } else {
    t10 = $[32];
  }
  useEffect(t7, t10);
};
function _temp(item) {
  return item.selected;
}

export { useAnnouncements };