@atlaskit/editor-plugin-layout/dist/esm/ui/LayoutColumnMenu/utils.js

Layout plugin for @atlaskit/editor-core

import _defineProperty from "@babel/runtime/helpers/defineProperty";
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 { findOverflowScrollParent } from '@atlaskit/editor-common/ui';
import { fg } from '@atlaskit/platform-feature-flags';
export var LAYOUT_COLUMN_MENU_POPUP_OFFSET = [0, 4];

// Gate OFF: small gap below the handle; Popup handles invert/nudge fallbacks.
export var LAYOUT_COLUMN_MENU_POPUP_OFFSET_BELOW = [0, 2];
// Gate OFF: left-aligned, below the handle. Gate ON (legacy): centred, prefer above with manual flip.
export var getLayoutColumnMenuPositioningProps = function getLayoutColumnMenuPositioningProps() {
  if (!fg('platform_editor_layout_column_menu_kill_switch_1')) {
    return {
      alignX: undefined,
      alignY: undefined,
      offset: LAYOUT_COLUMN_MENU_POPUP_OFFSET_BELOW,
      useManualBelowFlip: false
    };
  }
  return {
    alignX: 'center',
    alignY: 'top',
    offset: LAYOUT_COLUMN_MENU_POPUP_OFFSET,
    useManualBelowFlip: true
  };
};
var getVisibleEditorAreaTop = function getVisibleEditorAreaTop(editorView, scrollableElement) {
  var visibleEditorArea = scrollableElement || findOverflowScrollParent(editorView.dom);
  return Math.max(visibleEditorArea ? visibleEditorArea.getBoundingClientRect().top : 0, 0);
};

// Prefer opening above the column drag handle, but fall back below when the visible editor
// area does not have enough space above (for example near the top toolbar).
export var shouldOpenLayoutColumnMenuBelow = function shouldOpenLayoutColumnMenuBelow(_ref) {
  var editorView = _ref.editorView,
    popup = _ref.popup,
    scrollableElement = _ref.scrollableElement,
    target = _ref.target;
  var offsetY = LAYOUT_COLUMN_MENU_POPUP_OFFSET[1];
  var spaceAbove = target.getBoundingClientRect().top - getVisibleEditorAreaTop(editorView, scrollableElement);
  var popupHeight = popup.getBoundingClientRect().height || popup.clientHeight;
  return spaceAbove <= popupHeight + offsetY;
};
export var calculateFallbackBottomPosition = function calculateFallbackBottomPosition(position, target, popup) {
  if (!(popup.offsetParent instanceof HTMLElement)) {
    return position;
  }
  var offsetParent = popup.offsetParent;
  var borderBottomWidth = parseInt(window.getComputedStyle(offsetParent).borderBottomWidth, 10) || 0;
  var _offsetParent$getBoun = offsetParent.getBoundingClientRect(),
    offsetParentTop = _offsetParent$getBoun.top;
  var _target$getBoundingCl = target.getBoundingClientRect(),
    targetTop = _target$getBoundingCl.top,
    targetHeight = _target$getBoundingCl.height;
  var offsetY = LAYOUT_COLUMN_MENU_POPUP_OFFSET[1];
  var top = Math.ceil(targetTop - offsetParentTop + targetHeight + (offsetParent === offsetParent.ownerDocument.body ? 0 : offsetParent.scrollTop) - borderBottomWidth + offsetY);
  var positionWithoutBottom = _objectSpread({}, position);
  delete positionWithoutBottom.bottom;
  return _objectSpread(_objectSpread({}, positionWithoutBottom), {}, {
    top: top
  });
};