react-lightning-design-system/module/scripts/DropdownButton.js

Salesforce Lightning Design System components built with React

import _defineProperty from "@babel/runtime/helpers/defineProperty";
import _extends from "@babel/runtime/helpers/extends";
import _slicedToArray from "@babel/runtime/helpers/slicedToArray";
import _objectWithoutProperties from "@babel/runtime/helpers/objectWithoutProperties";
var _excluded = ["className", "opened", "defaultOpened", "menuAlign", "menuSize", "menuHeader", "nubbinTop", "hoverPopup", "menuStyle", "type", "label", "children", "style", "buttonRef", "dropdownRef", "onBlur", "onClick", "onMenuSelect"];
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 React, { useRef, useContext, useEffect } from 'react';
import classnames from 'classnames';
import { Button } from './Button';
import { DropdownMenu } from './DropdownMenu';
import { registerStyle, isElInChildren } from './util';
import { ComponentSettingsContext } from './ComponentSettings';
import { ButtonGroupContext } from './ButtonGroup';
import { useControlledValue, useEventCallback, useMergeRefs } from './hooks';
/**
 *
 */
function useInitComponentStyle() {
  useEffect(function () {
    registerStyle('no-hover-popup', [['.slds-dropdown-trigger:hover .slds-dropdown_menu.react-slds-no-hover-popup', '{ visibility: hidden; opacity: 0; }'], ['.slds-dropdown-trigger.react-slds-dropdown-opened .slds-dropdown_menu', '{ visibility: visible !important; opacity: 1 !important; }']]);
  }, []);
}
function isFocusedInComponent(targetEl, rootEl, dropdownEl) {
  return isElInChildren(rootEl, targetEl) || isElInChildren(dropdownEl, targetEl);
}
function focusToTargetItemEl(dropdownEl) {
  if (!dropdownEl) {
    return;
  }
  var firstItemEl = dropdownEl.querySelector('.slds-is-selected > .react-slds-menuitem[tabIndex]') || dropdownEl.querySelector('.react-slds-menuitem[tabIndex]');
  if (firstItemEl) {
    firstItemEl.focus();
  }
}

/**
 *
 */

/**
 *
 */
export var DropdownButton = function DropdownButton(props) {
  var _useContext2;
  var className = props.className,
    opened_ = props.opened,
    defaultOpened = props.defaultOpened,
    menuAlign = props.menuAlign,
    menuSize = props.menuSize,
    menuHeader = props.menuHeader,
    nubbinTop = props.nubbinTop,
    hoverPopup = props.hoverPopup,
    menuStyle = props.menuStyle,
    type = props.type,
    label = props.label,
    children = props.children,
    style = props.style,
    buttonRef_ = props.buttonRef,
    dropdownRef_ = props.dropdownRef,
    onBlur_ = props.onBlur,
    onClick_ = props.onClick,
    onMenuSelect_ = props.onMenuSelect,
    rprops = _objectWithoutProperties(props, _excluded);
  useInitComponentStyle();
  var _useContext = useContext(ComponentSettingsContext),
    getActiveElement = _useContext.getActiveElement;
  var _ref = (_useContext2 = useContext(ButtonGroupContext)) !== null && _useContext2 !== void 0 ? _useContext2 : {},
    grouped = _ref.grouped,
    isFirstInGroup = _ref.isFirstInGroup,
    isLastInGroup = _ref.isLastInGroup;
  var elRef = useRef(null);
  var buttonElRef = useRef(null);
  var buttonRef = useMergeRefs([buttonElRef, buttonRef_]);
  var dropdownElRef = useRef(null);
  var dropdownRef = useMergeRefs([dropdownElRef, dropdownRef_]);
  var _useControlledValue = useControlledValue(opened_, defaultOpened || false),
    _useControlledValue2 = _slicedToArray(_useControlledValue, 2),
    opened = _useControlledValue2[0],
    setOpened = _useControlledValue2[1];
  var onBlur = useEventCallback(function () {
    setTimeout(function () {
      var targetEl = getActiveElement();
      if (!isFocusedInComponent(targetEl, elRef.current, dropdownElRef.current)) {
        setOpened(false);
        onBlur_ === null || onBlur_ === void 0 || onBlur_();
      }
    }, 10);
  });
  var onKeyDown = useEventCallback(function (e) {
    if (e.keyCode === 40) {
      // down
      e.preventDefault();
      e.stopPropagation();
      if (!opened) {
        setOpened(true);
        onClick_ === null || onClick_ === void 0 || onClick_(e);
        setTimeout(function () {
          focusToTargetItemEl(dropdownElRef.current);
        }, 20);
      } else {
        focusToTargetItemEl(dropdownElRef.current);
      }
    } else if (e.keyCode === 27) {
      // ESC
      e.preventDefault();
      e.stopPropagation();
      setOpened(false);
    }
  });
  var onTriggerClick = useEventCallback(function (e) {
    if (!hoverPopup) {
      setOpened(function (opened) {
        return !opened;
      });
    }
    onClick_ === null || onClick_ === void 0 || onClick_(e);
  });
  var onMenuSelect = useEventCallback(function (eventKey) {
    if (!hoverPopup) {
      setTimeout(function () {
        var _buttonElRef$current;
        (_buttonElRef$current = buttonElRef.current) === null || _buttonElRef$current === void 0 || _buttonElRef$current.focus();
        setOpened(false);
      }, 10);
    }
    onMenuSelect_ === null || onMenuSelect_ === void 0 || onMenuSelect_(eventKey);
  });
  var onMenuClose = useEventCallback(function () {
    var _buttonElRef$current2;
    (_buttonElRef$current2 = buttonElRef.current) === null || _buttonElRef$current2 === void 0 || _buttonElRef$current2.focus();
    setOpened(false);
  });
  var icon = props.icon;
  var iconMore = undefined;
  if (!label && !icon) {
    icon = 'down';
  }
  if (label || type === 'icon-more') {
    iconMore = 'down';
  }
  var button = /*#__PURE__*/React.createElement(Button, _extends({
    type: type,
    label: label,
    icon: icon,
    iconMore: iconMore
  }, rprops, {
    "aria-haspopup": true,
    "aria-expanded": opened,
    buttonRef: buttonRef,
    onClick: onTriggerClick,
    onKeyDown: onKeyDown,
    onBlur: onBlur
  }));
  var dropdownClassNames = classnames(className, 'slds-dropdown-trigger', 'slds-dropdown-trigger_click', {
    'slds-m-left_xx-small': !grouped,
    'slds-is-open': opened,
    'react-slds-dropdown-opened': opened
  });
  var noneStyle = {
    display: 'none'
  };
  return /*#__PURE__*/React.createElement("div", {
    className: dropdownClassNames,
    style: style,
    ref: elRef
  }, grouped ? /*#__PURE__*/React.createElement("div", {
    className: "slds-button-group"
  }, isFirstInGroup ? null : /*#__PURE__*/React.createElement("button", {
    type: "button",
    className: "slds-button",
    style: noneStyle
  }), button, isLastInGroup ? null : /*#__PURE__*/React.createElement("button", {
    type: "button",
    className: "slds-button",
    style: noneStyle
  })) : button, hoverPopup || opened ? /*#__PURE__*/React.createElement(DropdownMenu, {
    portalClassName: className,
    align: menuAlign,
    header: menuHeader,
    size: menuSize,
    nubbinTop: nubbinTop,
    hoverPopup: hoverPopup,
    elementRef: dropdownRef,
    onMenuSelect: onMenuSelect,
    onMenuClose: onMenuClose,
    onBlur: onBlur,
    style: _objectSpread({
      transition: 'none'
    }, menuStyle)
  }, children) : undefined);
};
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