@carbon/ibm-products/es/components/DataSpreadsheet/utils/moveColumnIndicatorLine.js

Carbon for IBM Products

/**
 * Copyright IBM Corp. 2020, 2025
 *
 * This source code is licensed under the Apache-2.0 license found in the
 * LICENSE file in the root directory of this source tree.
 */

import { px } from '@carbon/layout';
import { pkg } from '../../../settings.js';

const moveColumnIndicatorLine = _ref => {
  let {
    blockClass = `${pkg.prefix}--data-spreadsheet`,
    clonedSelectionElement,
    ref,
    spreadsheetCoords,
    leftScrollAmount
  } = _ref;
  const closestCell = event.target.closest(`.${blockClass}--interactive-cell-element`);
  const newColumnIndex = closestCell?.getAttribute('data-column-index');
  const originalColumnIndex = clonedSelectionElement?.getAttribute('data-column-index-original');
  const closestCellCoords = closestCell.getBoundingClientRect();
  const indicatorLineElement = ref.current.querySelector(`.${blockClass}__reorder-indicator-line`);
  const matcherId = clonedSelectionElement?.getAttribute('data-matcher-id');
  const selectionAreaOrigin = ref.current.querySelector(`[data-matcher-id="${matcherId}"]`);
  const listContainer = ref.current.querySelector(`.${blockClass}__list--container`);
  const scrollSpeed = 10; // Scrolling speed
  const leftEdgeThreshold = 120; // Distance from the left edge to start scrolling
  const rightEdgeThreshold = 100; // Distance from the right edge to start scrolling

  const {
    clientX
  } = event;
  const {
    left,
    right
  } = listContainer.getBoundingClientRect();

  // Is near left side of viewport
  if (clientX < leftEdgeThreshold) {
    window.scrollBy(-10, 0);
  }

  // Is near right side of viewport
  if (clientX > window.innerWidth - rightEdgeThreshold) {
    window.scrollBy(scrollSpeed, 0);
  }

  // Is near left edge of table
  if (clientX > left && clientX < left + leftEdgeThreshold) {
    listContainer.scrollBy(-10, 0);
  }

  // Is near right edge of table
  if (clientX < right && clientX > right - rightEdgeThreshold) {
    listContainer.scrollBy(scrollSpeed, 0);
  }
  if (Number(newColumnIndex) > Number(originalColumnIndex)) {
    const leftPosition = closestCellCoords.left - spreadsheetCoords.left + closestCell.offsetWidth - 2 + leftScrollAmount;
    indicatorLineElement.style.left = px(leftPosition);
  }
  if (Number(newColumnIndex) < Number(originalColumnIndex)) {
    const leftPosition = closestCellCoords.left - spreadsheetCoords.left + leftScrollAmount;
    indicatorLineElement.style.left = px(leftPosition);
  }
  if (Number(newColumnIndex) === Number(originalColumnIndex)) {
    indicatorLineElement.style.left = selectionAreaOrigin.style.left;
  }
};

export { moveColumnIndicatorLine };