Img::saveNode

static function saveNode(BitrixLandingBlock $block, $selector, array $data)
{
	$doc = $block->getDom();
	$resultList = $doc->querySelectorAll($selector);
	$valueBefore = static::getNode($block, $selector);
	$files = null;

	foreach ($data as $pos => $value)
	{
		// 2x - this for retina support
		$src = (isset($value['src']) && is_string($value['src'])) ? trim($value['src']) : '';
		$src2x = (isset($value['src2x']) && is_string($value['src2x'])) ? trim($value['src2x']) : '';
		$alt = (isset($value['alt']) && is_string($value['alt'])) ? trim($value['alt']) : '';
		$id = isset($value['id']) ? intval($value['id']) : 0;
		$id2x = isset($value['id2x']) ? intval($value['id2x']) : 0;
		$isLazy = isset($value['isLazy']) && $value['isLazy'] === 'Y';

		if ($src)
		{
			$src = str_replace('http://', 'https://', $src);
		}
		if ($src2x)
		{
			$src2x = str_replace('http://', 'https://', $src2x);
		}

		if (isset($value['url']))
		{
			$url = is_array($value['url'])
				? json_encode($value['url'])
				: $value['url'];
		}
		else
		{
			$url = '';
		}

		if (isset($resultList[$pos]))
		{
			// check permissions to this file ids
			if ($id || $id2x)
			{
				if ($files === null)
				{
					$files = File::getFilesFromBlock($block->getId());
				}
				if (!in_array($id, $files))
				{
					$id = 0;
				}
				if (!in_array($id2x, $files))
				{
					$id2x = 0;
				}
			}
			// update in content
			if ($resultList[$pos]->getTagName() !== 'IMG')
			{
				$styles = StyleInliner::getStyle($resultList[$pos]);
				$oldStyles = [];
				$newStyles = [];
				// collect existing styles
				foreach ($styles as $key => $styleValue)
				{
					if ($key !== 'background' && $key !== 'background-image')
					{
						$oldStyles[] = "{$key}: {$styleValue};";
					}
				}
				// add images to bg
				if ($src)
				{
					// and one two additional bg
					$newStyles = [
						"background-image: url('{$src}');",
					];
					if ($src2x)
					{
						$newStyles = array_merge(
							$newStyles,
							[
								"background-image: -webkit-image-set(url('{$src}') 1x, url('{$src2x}') 2x);",
								"background-image: image-set(url('{$src}') 1x, url('{$src2x}') 2x);",
							]
						);
					}
				}
				// or remove exists
				else
				{
					foreach (['fileid', 'fileid2x'] as $dataCode)
					{
						$oldId = $resultList[$pos]->getAttribute(
							'data-' . $dataCode
						);
						if ($oldId > 0)
						{
							File::deleteFromBlock(
								$block->getId(),
								$oldId
							);
						}
					}
				}

				$style = array_merge($oldStyles, $newStyles);
				$style = implode(' ', $style);
				$resultList[$pos]->setAttribute('style', $style);

				// for lazyload
				if ($isLazy)
				{
					$resultList[$pos]->setAttribute('data-lazy-bg', 'Y');
					if ($lazyOrigSrc = $value['lazyOrigSrc'])
					{
						$resultList[$pos]->setAttribute('data-src', $lazyOrigSrc);
					}
					if ($lazyOrigSrc2x = $value['lazyOrigSrc2x'])
					{
						$resultList[$pos]->setAttribute('data-src2x', $lazyOrigSrc2x);
					}
					if ($lazyOrigStyle = $value['lazyOrigStyle'])
					{
						$resultList[$pos]->setAttribute('data-style', $lazyOrigStyle);
					}
				}
			}
			else
			{
				$resultList[$pos]->setAttribute('alt', $alt);
				$resultList[$pos]->setAttribute('src', $src);
				if ($src2x)
				{
					$resultList[$pos]->setAttribute('srcset', "{$src2x} 2x");
				}
				else
				{
					$resultList[$pos]->setAttribute('srcset', '');
				}

				// for lazyload
				if ($isLazy)
				{
					$resultList[$pos]->setAttribute('data-lazy-img', 'Y');
					$resultList[$pos]->setAttribute('loading', 'lazy');
					if ($lazyOrigSrc = $value['lazyOrigSrc'])
					{
						$resultList[$pos]->setAttribute('data-src', $lazyOrigSrc);
					}
					if ($lazyOrigSrcset = $value['lazyOrigSrcset'])
					{
						$resultList[$pos]->setAttribute('data-srcset', $lazyOrigSrcset);
					}
				}
			}
			$id
				? $resultList[$pos]->setAttribute('data-fileid', $id)
				: $resultList[$pos]->removeAttribute('data-fileid')
			;
			$id2x
				? $resultList[$pos]->setAttribute('data-fileid2x', $id2x)
				: $resultList[$pos]->removeAttribute('data-fileid2x')
			;
			$url
				? $resultList[$pos]->setAttribute('data-pseudo-url', $url)
				: $resultList[$pos]->removeAttribute('data-pseudo-url')
			;

			if (History::isActive())
			{
				$history = new History($block->getLandingId(), History::ENTITY_TYPE_LANDING);
				$history->push('EDIT_IMG', [
					'block' => $block,
					'selector' => $selector,
					'position' => (int)$pos,
					'valueBefore' => $valueBefore[$pos],
					'valueAfter' => $value,
				]);
			}
		}
	}
}