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%PDF-
Mini Shell
Mini Shell
<?php
namespace MailPoet\Newsletter\Editor;
use pQuery;
use MailPoet\Util\DOM as DOMUtil;
if(!defined('ABSPATH')) exit;
class StructureTransformer {
function transform($content, $image_full_width) {
$root = pQuery::parseStr($content);
$this->hoistImagesToRoot($root);
$structure = $this->transformTagsToBlocks($root, $image_full_width);
$structure = $this->mergeNeighboringBlocks($structure);
return $structure;
}
/**
* Hoists images to root level, preserves order by splitting neighboring
* elements and inserts tags as children of top ancestor
*/
protected function hoistImagesToRoot($root) {
foreach($root->query('img') as $item) {
$top_ancestor = DOMUtil::findTopAncestor($item);
$offset = $top_ancestor->index();
if($item->hasParent('a')) {
$item = $item->parent;
}
DOMUtil::splitOn($item->getRoot(), $item);
}
}
/**
* Transforms HTML tags into their respective JSON objects,
* turns other root children into text blocks
*/
private function transformTagsToBlocks($root, $image_full_width) {
return array_map(function($item) use ($image_full_width) {
if($item->tag === 'img' || $item->tag === 'a' && $item->query('img')) {
if($item->tag === 'a') {
$link = $item->getAttribute('href');
$image = $item->children[0];
} else {
$link = '';
$image = $item;
}
return array(
'type' => 'image',
'link' => $link,
'src' => $image->getAttribute('src'),
'alt' => $image->getAttribute('alt'),
'fullWidth' => $image_full_width,
'width' => $image->getAttribute('width'),
'height' => $image->getAttribute('height'),
'styles' => array(
'block' => array(
'textAlign' => 'center',
),
),
);
} else {
return array(
'type' => 'text',
'text' => $item->toString()
);
}
}, $root->children);
}
/**
* Merges neighboring blocks when possible.
* E.g. 2 adjacent text blocks may be combined into one.
*/
private function mergeNeighboringBlocks($structure) {
$updated_structure = array();
$text_accumulator = '';
foreach($structure as $item) {
if($item['type'] === 'text') {
$text_accumulator .= $item['text'];
}
if($item['type'] !== 'text') {
if(!empty($text_accumulator)) {
$updated_structure[] = array(
'type' => 'text',
'text' => trim($text_accumulator),
);
$text_accumulator = '';
}
$updated_structure[] = $item;
}
}
if(!empty($text_accumulator)) {
$updated_structure[] = array(
'type' => 'text',
'text' => trim($text_accumulator),
);
}
return $updated_structure;
}
}
Zerion Mini Shell 1.0