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import _extends from "@babel/runtime/helpers/esm/extends";
import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";
import _objectSpread from "@babel/runtime/helpers/esm/objectSpread2";
import _objectWithoutProperties from "@babel/runtime/helpers/esm/objectWithoutProperties";
var _excluded = ["prefixCls", "disabled", "visible", "children", "popupElement", "animation", "transitionName", "dropdownStyle", "dropdownClassName", "direction", "placement", "builtinPlacements", "dropdownMatchSelectWidth", "dropdownRender", "dropdownAlign", "getPopupContainer", "empty", "getTriggerDOMNode", "onPopupVisibleChange", "onPopupMouseEnter"];
import Trigger from '@rc-component/trigger';
import classNames from 'classnames';
import * as React from 'react';
var getBuiltInPlacements = function getBuiltInPlacements(dropdownMatchSelectWidth) {
  // Enable horizontal overflow auto-adjustment when a custom dropdown width is provided
  var adjustX = dropdownMatchSelectWidth === true ? 0 : 1;
  return {
    bottomLeft: {
      points: ['tl', 'bl'],
      offset: [0, 4],
      overflow: {
        adjustX: adjustX,
        adjustY: 1
      },
      htmlRegion: 'scroll'
    },
    bottomRight: {
      points: ['tr', 'br'],
      offset: [0, 4],
      overflow: {
        adjustX: adjustX,
        adjustY: 1
      },
      htmlRegion: 'scroll'
    },
    topLeft: {
      points: ['bl', 'tl'],
      offset: [0, -4],
      overflow: {
        adjustX: adjustX,
        adjustY: 1
      },
      htmlRegion: 'scroll'
    },
    topRight: {
      points: ['br', 'tr'],
      offset: [0, -4],
      overflow: {
        adjustX: adjustX,
        adjustY: 1
      },
      htmlRegion: 'scroll'
    }
  };
};
var SelectTrigger = function SelectTrigger(props, ref) {
  var prefixCls = props.prefixCls,
    disabled = props.disabled,
    visible = props.visible,
    children = props.children,
    popupElement = props.popupElement,
    animation = props.animation,
    transitionName = props.transitionName,
    dropdownStyle = props.dropdownStyle,
    dropdownClassName = props.dropdownClassName,
    _props$direction = props.direction,
    direction = _props$direction === void 0 ? 'ltr' : _props$direction,
    placement = props.placement,
    builtinPlacements = props.builtinPlacements,
    dropdownMatchSelectWidth = props.dropdownMatchSelectWidth,
    dropdownRender = props.dropdownRender,
    dropdownAlign = props.dropdownAlign,
    getPopupContainer = props.getPopupContainer,
    empty = props.empty,
    getTriggerDOMNode = props.getTriggerDOMNode,
    onPopupVisibleChange = props.onPopupVisibleChange,
    onPopupMouseEnter = props.onPopupMouseEnter,
    restProps = _objectWithoutProperties(props, _excluded);
  var dropdownPrefixCls = "".concat(prefixCls, "-dropdown");
  var popupNode = popupElement;
  if (dropdownRender) {
    popupNode = dropdownRender(popupElement);
  }
  var mergedBuiltinPlacements = React.useMemo(function () {
    return builtinPlacements || getBuiltInPlacements(dropdownMatchSelectWidth);
  }, [builtinPlacements, dropdownMatchSelectWidth]);

  // ===================== Motion ======================
  var mergedTransitionName = animation ? "".concat(dropdownPrefixCls, "-").concat(animation) : transitionName;

  // =================== Popup Width ===================
  var isNumberPopupWidth = typeof dropdownMatchSelectWidth === 'number';
  var stretch = React.useMemo(function () {
    if (isNumberPopupWidth) {
      return null;
    }
    return dropdownMatchSelectWidth === false ? 'minWidth' : 'width';
  }, [dropdownMatchSelectWidth, isNumberPopupWidth]);
  var popupStyle = dropdownStyle;
  if (isNumberPopupWidth) {
    popupStyle = _objectSpread(_objectSpread({}, popupStyle), {}, {
      width: dropdownMatchSelectWidth
    });
  }

  // ======================= Ref =======================
  var triggerPopupRef = React.useRef(null);
  React.useImperativeHandle(ref, function () {
    return {
      getPopupElement: function getPopupElement() {
        var _triggerPopupRef$curr;
        return (_triggerPopupRef$curr = triggerPopupRef.current) === null || _triggerPopupRef$curr === void 0 ? void 0 : _triggerPopupRef$curr.popupElement;
      }
    };
  });
  return /*#__PURE__*/React.createElement(Trigger, _extends({}, restProps, {
    showAction: onPopupVisibleChange ? ['click'] : [],
    hideAction: onPopupVisibleChange ? ['click'] : [],
    popupPlacement: placement || (direction === 'rtl' ? 'bottomRight' : 'bottomLeft'),
    builtinPlacements: mergedBuiltinPlacements,
    prefixCls: dropdownPrefixCls,
    popupTransitionName: mergedTransitionName,
    popup: /*#__PURE__*/React.createElement("div", {
      onMouseEnter: onPopupMouseEnter
    }, popupNode),
    ref: triggerPopupRef,
    stretch: stretch,
    popupAlign: dropdownAlign,
    popupVisible: visible,
    getPopupContainer: getPopupContainer,
    popupClassName: classNames(dropdownClassName, _defineProperty({}, "".concat(dropdownPrefixCls, "-empty"), empty)),
    popupStyle: popupStyle,
    getTriggerDOMNode: getTriggerDOMNode,
    onPopupVisibleChange: onPopupVisibleChange
  }), children);
};
var RefSelectTrigger = /*#__PURE__*/React.forwardRef(SelectTrigger);
if (process.env.NODE_ENV !== 'production') {
  RefSelectTrigger.displayName = 'SelectTrigger';
}
export default RefSelectTrigger;