@atlaskit/dropdown-menu/dist/esm/dropdown-menu-top-layer.js

A dropdown menu displays a list of actions or options to a user.

/* dropdown-menu-top-layer.tsx generated by @compiled/babel-plugin v2.0.0 */
import _extends from "@babel/runtime/helpers/extends";
import _defineProperty from "@babel/runtime/helpers/defineProperty";
import _slicedToArray from "@babel/runtime/helpers/slicedToArray";
import "./dropdown-menu-top-layer.compiled.css";
import * as React from 'react';
import { ax, ix } from "@compiled/react/runtime";
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
import { bind } from 'bind-event-listener';
import Button from '@atlaskit/button/new';
import { KEY_DOWN, KEY_ENTER, KEY_SPACE } from '@atlaskit/ds-lib/keycodes';
import mergeRefs from '@atlaskit/ds-lib/merge-refs';
import noop from '@atlaskit/ds-lib/noop';
import useControlledState from '@atlaskit/ds-lib/use-controlled';
import useFocus from '@atlaskit/ds-lib/use-focus-event';
import ExpandIcon from '@atlaskit/icon/core/chevron-down';
import MenuGroup from '@atlaskit/menu/menu-group';
import Spinner from '@atlaskit/spinner';
import { getFirstFocusable } from '@atlaskit/top-layer/focus';
import { getAriaForTrigger } from '@atlaskit/top-layer/get-aria-for-trigger';
import { fromLegacyPlacement } from '@atlaskit/top-layer/placement-map';
import { Popover } from '@atlaskit/top-layer/popover';
import { useAnchorPosition } from '@atlaskit/top-layer/use-anchor-position';
import { isAtCurrentMenuLevel, useArrowNavigation } from '@atlaskit/top-layer/use-arrow-navigation';
import { usePopoverId } from '@atlaskit/top-layer/use-popover-id';
import { useWidthFromAnchor } from '@atlaskit/top-layer/use-width-from-anchor';
import SelectionStore from './internal/context/selection-store';
var MAX_HEIGHT = "calc(100vh - 16px)";
var styles = {
  spinnerContainer: "_1e0c1txw _1ul91lit _1bah1h6o _1q51v47k _y4tiv47k _85i5v47k _bozgv47k",
  menuContent: "_2rkofajl _bfhk1bhr _16qs130s"
};

/**
 * Event types produced by trigger interactions.
 *
 * - `React.MouseEvent<Element>`: from the trigger's `onClick` handler
 * - `React.KeyboardEvent<Element>`: from the trigger's `onClick` when activated via keyboard
 * - `KeyboardEvent`: native event from the ArrowDown `bind(window, ...)` listener
 */

/**
 * Determines whether a trigger interaction was keyboard-initiated.
 *
 * Keyboard signals:
 * - `type === 'keydown'` (native KeyboardEvent from ArrowDown handler)
 * - `clientX/clientY === 0` (assistive technology click)
 * - `detail === 0` (keyboard-activated click via Enter/Space)
 */
function isKeyboardTriggered(event) {
  if (event.type === 'keydown') {
    return true;
  }
  if ('clientX' in event && (event.clientX === 0 || event.clientY === 0)) {
    return true;
  }
  if (event.detail === 0) {
    return true;
  }
  return false;
}

/**
 * Loading indicator for the dropdown menu.
 */
function LoadingIndicator(_ref) {
  var _ref$statusLabel = _ref.statusLabel,
    statusLabel = _ref$statusLabel === void 0 ? 'Loading' : _ref$statusLabel,
    testId = _ref.testId;
  return /*#__PURE__*/React.createElement("div", {
    role: "menuitem",
    className: ax([styles.spinnerContainer])
  }, /*#__PURE__*/React.createElement(Spinner, {
    size: "small",
    label: statusLabel,
    testId: testId
  }));
}

/**
 * Top-layer implementation of DropdownMenu.
 *
 * Replaces the legacy `@atlaskit/popup` + `@atlaskit/portal` + `@atlaskit/layering` pipeline
 * with the native Popover API via `@atlaskit/top-layer`.
 *
 * What is no longer needed:
 * - Portal: top layer handles stacking natively
 * - FocusLock / react-focus-lock: popover=auto provides light dismiss
 * - z-index: top layer is always above everything
 * - FocusManager (ref registration): replaced by DOM-query-based `useArrowNavigation`
 * - handle-focus.tsx: replaced by `useArrowNavigation`
 * - Layering context: top layer nesting is handled by the browser
 * - Fallback placements / Popper: CSS Anchor Positioning handles positioning
 */
function DropdownMenuTopLayer(_ref2) {
  var _ref5;
  var _ref2$autoFocus = _ref2.autoFocus,
    autoFocus = _ref2$autoFocus === void 0 ? false : _ref2$autoFocus,
    children = _ref2.children,
    _ref2$defaultOpen = _ref2.defaultOpen,
    defaultOpen = _ref2$defaultOpen === void 0 ? false : _ref2$defaultOpen,
    _ref2$isLoading = _ref2.isLoading,
    isLoading = _ref2$isLoading === void 0 ? false : _ref2$isLoading,
    isOpenProp = _ref2.isOpen,
    _ref2$onOpenChange = _ref2.onOpenChange,
    onOpenChange = _ref2$onOpenChange === void 0 ? noop : _ref2$onOpenChange,
    _ref2$placement = _ref2.placement,
    placement = _ref2$placement === void 0 ? 'bottom-start' : _ref2$placement,
    _ref2$shouldFitContai = _ref2.shouldFitContainer,
    shouldFitContainer = _ref2$shouldFitContai === void 0 ? false : _ref2$shouldFitContai,
    returnFocusRef = _ref2.returnFocusRef,
    spacing = _ref2.spacing,
    statusLabel = _ref2.statusLabel,
    testId = _ref2.testId,
    trigger = _ref2.trigger,
    label = _ref2.label,
    interactionName = _ref2.interactionName,
    menuLabel = _ref2.menuLabel;
  var _useControlledState = useControlledState(isOpenProp, function () {
      return defaultOpen;
    }),
    _useControlledState2 = _slicedToArray(_useControlledState, 2),
    isLocalOpen = _useControlledState2[0],
    setLocalIsOpen = _useControlledState2[1];
  var triggerRef = useRef(null);
  var popoverRef = useRef(null);
  var menuRef = useRef(null);
  var _useState = useState(false),
    _useState2 = _slicedToArray(_useState, 2),
    isTriggeredUsingKeyboard = _useState2[0],
    setTriggeredUsingKeyboard = _useState2[1];
  var popoverId = usePopoverId();
  var topLayerPlacement = useMemo(function () {
    return fromLegacyPlacement({
      legacy: placement
    });
  }, [placement]);
  useAnchorPosition({
    anchorRef: triggerRef,
    popoverRef: popoverRef,
    placement: topLayerPlacement,
    isOpen: isLocalOpen
  });
  useWidthFromAnchor({
    mode: shouldFitContainer ? 'min-anchor' : 'none',
    popoverRef: popoverRef,
    anchorRef: triggerRef,
    isOpen: isLocalOpen
  });

  // Close handling.
  // Focus restoration is handled natively by the Popover API:
  //   - Escape: browser restores focus to the trigger automatically
  //   - Click-outside: browser does NOT restore (correct behavior)
  //
  // The only custom focus handling needed is `returnFocusRef`: when provided,
  // we redirect focus to a different element than the trigger. We do this
  // in the onClose callback via rAF, which runs after the browser's native
  // restoration, effectively overriding it.
  var handleOnClose = useCallback(function (_ref3) {
    var _reason = _ref3.reason;
    if (returnFocusRef) {
      requestAnimationFrame(function () {
        var _returnFocusRef$curre;
        (_returnFocusRef$curre = returnFocusRef.current) === null || _returnFocusRef$curre === void 0 || _returnFocusRef$curre.focus();
      });
    }
    setLocalIsOpen(false);
    onOpenChange({
      isOpen: false,
      event: null
    });
  }, [onOpenChange, returnFocusRef, setLocalIsOpen]);

  // Trigger click handling.
  var handleTriggerClicked = useCallback(function (event) {
    var newValue = !isLocalOpen;
    setTriggeredUsingKeyboard(isKeyboardTriggered(event));
    setLocalIsOpen(newValue);

    // Extract the native DOM event for onOpenChange
    var nativeEvent = 'nativeEvent' in event ? event.nativeEvent : event;
    onOpenChange({
      isOpen: newValue,
      event: nativeEvent
    });
  }, [isLocalOpen, setLocalIsOpen, onOpenChange]);
  var _useFocus = useFocus(),
    isFocused = _useFocus.isFocused,
    bindFocus = _useFocus.bindFocus;

  // When trigger is focused, open dropdown on ArrowDown (top-level only).
  // Per WAI-ARIA, ArrowDown opens a menu from a menubar/button trigger,
  // but inside a vertical submenu, ArrowDown navigates between siblings
  // and ArrowRight opens nested menus instead.
  useEffect(function () {
    var _triggerRef$current;
    if (!isFocused || isLocalOpen) {
      return noop;
    }

    // Do not open on ArrowDown if this trigger is inside a parent menu.
    // Nested menus should only be opened via ArrowRight or Enter.
    var isNestedTrigger = ((_triggerRef$current = triggerRef.current) === null || _triggerRef$current === void 0 ? void 0 : _triggerRef$current.closest('[role="menu"]')) != null;
    return bind(window, {
      type: 'keydown',
      listener: function openOnKeyDown(e) {
        if (e.key === KEY_DOWN && !isNestedTrigger) {
          e.preventDefault();
          handleTriggerClicked(e);
        } else if ((e.code === KEY_SPACE || e.key === KEY_ENTER) && e.detail === 0) {
          setTriggeredUsingKeyboard(true);
        }
      }
    });
  }, [isFocused, isLocalOpen, handleTriggerClicked]);

  // Arrow navigation.
  // useArrowNavigation handles ArrowUp/Down, Home/End, and Tab-to-close
  // by querying focusable elements in the menu DOM container.
  var handleArrowClose = useCallback(function () {
    handleOnClose({
      reason: 'escape'
    });
  }, [handleOnClose]);
  var handleNestedOpen = useCallback(function (_ref4) {
    var trigger = _ref4.trigger;
    trigger.click();
  }, []);
  var handleNestedClose = useCallback(function () {
    handleOnClose({
      reason: 'escape'
    });
  }, [handleOnClose]);
  useArrowNavigation({
    containerRef: menuRef,
    onClose: handleArrowClose,
    onNestedOpen: handleNestedOpen,
    onNestedClose: handleNestedClose,
    isEnabled: isLocalOpen,
    filter: isAtCurrentMenuLevel
  });

  // Auto-focus first item on open.
  useEffect(function () {
    if (!isLocalOpen || !isTriggeredUsingKeyboard && !autoFocus) {
      return;
    }
    requestAnimationFrame(function () {
      var menu = menuRef.current;
      if (!menu) {
        return;
      }
      var firstItem = getFirstFocusable({
        container: menu
      });
      firstItem === null || firstItem === void 0 || firstItem.focus();
    });
  }, [isLocalOpen, isTriggeredUsingKeyboard, autoFocus]);

  // Close on menu item click.
  // Close when a regular menuitem is clicked, but not checkboxes/radios
  // and not nested triggers (items with aria-haspopup).
  var handleMenuClick = useCallback(function (e) {
    var _target$closest;
    var target = e.target;
    var menuItem = (_target$closest = target.closest) === null || _target$closest === void 0 ? void 0 : _target$closest.call(target, '[role="menuitem"], [role="menuitemcheckbox"], [role="menuitemradio"]');
    if (!menuItem) {
      return;
    }
    var isCheckboxOrRadio = menuItem.getAttribute('role') === 'menuitemcheckbox' || menuItem.getAttribute('role') === 'menuitemradio';
    // Do not close the menu when clicking a nested trigger (aria-haspopup).
    // The nested dropdown will handle its own open/close.
    var isNestedTrigger = menuItem.hasAttribute('aria-haspopup');
    if (!isCheckboxOrRadio && !isNestedTrigger) {
      setLocalIsOpen(false);
      onOpenChange({
        isOpen: false,
        event: e.nativeEvent
      });
    }
  }, [setLocalIsOpen, onOpenChange]);
  var ariaAttributes = getAriaForTrigger({
    role: 'menu',
    isOpen: isLocalOpen,
    popoverId: popoverId
  });

  // FUDGE(top-layer-api): cast `aria-haspopup` to the narrow shape that adopter
  // public types expect. `@atlaskit/top-layer` types `aria-haspopup` as the wider
  // WAI-ARIA union, but the public `CustomTriggerProps` (extending `@atlaskit/popup`
  // `TriggerProps`) is intentionally kept narrow (`boolean | 'dialog'`) because the
  // top-layer API surface is not yet settled. The runtime value is unchanged; only
  // the TypeScript-visible type is narrowed at this boundary.
  var narrowAriaAttributes = ariaAttributes;
  var renderTrigger = function renderTrigger() {
    var setRef = function setRef(node) {
      triggerRef.current = node;
    };
    var combinedRef = mergeRefs([setRef]);
    if (typeof trigger === 'function') {
      return trigger(_objectSpread(_objectSpread(_objectSpread({}, narrowAriaAttributes), bindFocus), {}, {
        triggerRef: combinedRef,
        isSelected: isLocalOpen,
        onClick: handleTriggerClicked,
        testId: testId && "".concat(testId, "--trigger")
      }));
    }
    return /*#__PURE__*/React.createElement(Button, _extends({}, bindFocus, {
      ref: combinedRef
    }, narrowAriaAttributes, {
      isSelected: isLocalOpen,
      iconAfter: function iconAfter(iconProps) {
        return /*#__PURE__*/React.createElement(ExpandIcon, _extends({}, iconProps, {
          size: "small"
        }));
      },
      onClick: handleTriggerClicked,
      testId: testId && "".concat(testId, "--trigger"),
      "aria-label": label,
      interactionName: interactionName
    }), trigger);
  };
  return /*#__PURE__*/React.createElement(SelectionStore, null, renderTrigger(), /*#__PURE__*/React.createElement(Popover, {
    ref: popoverRef,
    id: popoverId,
    role: "menu",
    label: (_ref5 = menuLabel !== null && menuLabel !== void 0 ? menuLabel : label) !== null && _ref5 !== void 0 ? _ref5 : typeof trigger === 'string' ? trigger : 'Menu',
    isOpen: isLocalOpen,
    onClose: handleOnClose,
    shouldAnimate: true,
    placement: topLayerPlacement,
    testId: testId && "".concat(testId, "--content")
  }, /*#__PURE__*/React.createElement("div", {
    ref: menuRef,
    className: ax([styles.menuContent])
  }, /*#__PURE__*/React.createElement(MenuGroup, {
    isLoading: isLoading,
    maxHeight: MAX_HEIGHT,
    maxWidth: shouldFitContainer ? undefined : 800,
    onClick: handleMenuClick,
    role: "menu",
    spacing: spacing,
    testId: testId && "".concat(testId, "--menu-wrapper--menu-group"),
    menuLabel: menuLabel
  }, isLoading ? /*#__PURE__*/React.createElement(LoadingIndicator, {
    statusLabel: statusLabel,
    testId: testId && "".concat(testId, "--menu-wrapper--loading-indicator")
  }) : children))));
}
export default DropdownMenuTopLayer;