@atlaskit/editor-plugin-placeholder-text/dist/es2019/ui/FloatingToolbar/utils.js

placeholder text plugin for @atlaskit/editor-core

const getCursorHeightFrom = node => parseFloat(window.getComputedStyle(node, undefined).lineHeight || '');
export const getOffsetParent = (editorViewDom, popupsMountPoint) => popupsMountPoint ?
// Ignored via go/ees005
// eslint-disable-next-line @atlaskit/editor/no-as-casting
popupsMountPoint.offsetParent :
// Ignored via go/ees005
// eslint-disable-next-line @atlaskit/editor/no-as-casting
editorViewDom.offsetParent;
export const getNearestNonTextNode = node =>
// Ignored via go/ees005
// eslint-disable-next-line @atlaskit/editor/no-as-casting
// Ignored via go/ees005
// eslint-disable-next-line @atlaskit/editor/no-as-casting
node.nodeType === Node.TEXT_NODE ? node.parentNode : node;

/**
 * We need to translate the co-ordinates because `coordsAtPos` returns co-ordinates
 * relative to `window`. And, also need to adjust the cursor container height.
 * (0, 0)
 * +--------------------- [window] ---------------------+
 * |   (left, top) +-------- [Offset Parent] --------+  |
 * | {coordsAtPos} | [Cursor]   <- cursorHeight      |  |
 * |               | [FloatingToolbar]               |  |
 */
const convertFixedCoordinatesToAbsolutePositioning = (coordinates, offsetParent, cursorHeight) => {
  var _coordinates$left, _coordinates$right, _coordinates$top, _coordinates$top2;
  const {
    left: offsetParentLeft,
    top: offsetParentTop,
    height: offsetParentHeight
  } = offsetParent.getBoundingClientRect();
  return {
    left: ((_coordinates$left = coordinates.left) !== null && _coordinates$left !== void 0 ? _coordinates$left : 0) - offsetParentLeft,
    right: ((_coordinates$right = coordinates.right) !== null && _coordinates$right !== void 0 ? _coordinates$right : 0) - offsetParentLeft,
    top: ((_coordinates$top = coordinates.top) !== null && _coordinates$top !== void 0 ? _coordinates$top : 0) - (offsetParentTop - cursorHeight) + offsetParent.scrollTop,
    bottom: offsetParentHeight - (((_coordinates$top2 = coordinates.top) !== null && _coordinates$top2 !== void 0 ? _coordinates$top2 : 0) - (offsetParentTop - cursorHeight) - offsetParent.scrollTop)
  };
};
export const handlePositionCalculatedWith = (offsetParent, node, getCurrentFixedCoordinates) => position => {
  if (!offsetParent) {
    return position;
  }

  // Ignored via go/ees005
  // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
  const target = getNearestNonTextNode(node);
  const cursorHeight = getCursorHeightFrom(target);
  const fixedCoordinates = getCurrentFixedCoordinates();
  const absoluteCoordinates = convertFixedCoordinatesToAbsolutePositioning(fixedCoordinates, offsetParent, cursorHeight);
  return {
    left: position.left ? absoluteCoordinates.left : undefined,
    right: position.right ? absoluteCoordinates.right : undefined,
    top: position.top ? absoluteCoordinates.top : undefined,
    bottom: position.bottom ? absoluteCoordinates.bottom : undefined
  };
};