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wp core image block: parse html and add lightbox link

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This commit is contained in:
Steve Ross
2026-02-05 14:34:36 +00:00
parent fccfad2c55
commit 7b96dedde3
1 changed files with 49 additions and 0 deletions
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49
web/app/themes/badegg/app/blocks.php
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@@ -35,6 +35,7 @@ add_action( 'init', __NAMESPACE__ . '\\auto_register' );
* Core Blocks
*/
add_filter( 'render_block_core/details', __NAMESPACE__ . '\\core_details_modified', 10, 2 );
add_filter( 'render_block_core/image', __NAMESPACE__ . '\\core_image_modified', 10, 2 );
function remove_action_block_inline()
@@ -264,3 +265,51 @@ function core_details_modified($content, $block)
return $content;
}
function core_image_modified($content, $block)
{
$imageID = @$block['attrs']['id'];
$lazy = wp_get_attachment_image_src($imageID, 'lazy');
$large = wp_get_attachment_image_src($imageID, '2048x2048');
$dom = new \DomDocument();
$dom->strictErrorChecking = false;
@$dom->loadHTML($content);
@$images = $dom->getElementsByTagName('img');
// create lightbox link node
$link = $dom->createElement('a');
$link->setAttribute('class', 'badegg-lightbox');
$link->setAttribute('target', '_blank');
$link->setAttribute('role', 'button');
$link->setAttribute('tabindex', '0');
$link->setAttribute('aria-label', __('expand image', 'badegg'));
foreach($images as $image) {
// define new image attributes
$src = $image->getAttribute('src');
$srcset = $image->getAttribute('srcset');
$class = $image->getAttribute('class');
// set image attributes
$image->setAttribute('src', $lazy[0]);
$image->setAttribute('srcset', '');
$image->setAttribute('data-src', $src);
$image->setAttribute('data-srcset', $srcset);
$image->setAttribute('class', $class . ' lazy');
// clone lightbox link
$linkClone = $link->cloneNode();
// set lightbox link attributes
$linkClone->setAttribute('href', $large[0]);
// replace image with lightbox link
$image->parentNode->replaceChild($linkClone, $image);
// append original image to lightbox link
$linkClone->appendChild($image);
}
return $dom->saveHTML();
}