/**
* Generate <p> element replacements for supplied elements child nodes as required.
*
* @param Element $node
*
* @return \DOMWrap\NodeList $nodesToReturn Replacement elements
*/
private function getReplacementNodes(Element $node)
{
$nodesToReturn = $node->newNodeList();
$nodesToRemove = $node->newNodeList();
$replacementNodes = $node->newNodeList();
$fnCompareSiblingNodes = function ($node) {
if ($node->is(':not(a)') || $node->nodeType == XML_TEXT_NODE) {
return true;
}
};
foreach ($node->contents() as $child) {
if ($child->is('p') && $replacementNodes->count()) {
$nodesToReturn[] = $this->getFlushedBuffer($replacementNodes);
$replacementNodes->fromArray([]);
$nodesToReturn[] = $child;
} else {
if ($child->nodeType == XML_TEXT_NODE) {
$replaceText = $child->text();
if (!empty($replaceText)) {
// Get all previous sibling <a> nodes, the current text node, and all next sibling <a> nodes.
$siblings = $child->precedingUntil($fnCompareSiblingNodes, 'a')->merge([$child])->merge($child->followingUntil($fnCompareSiblingNodes, 'a'));
foreach ($siblings as $sibling) {
// Place current nodes textual contents in-between previous and next nodes.
if ($sibling->isSameNode($child)) {
$replacementNodes[] = new Text($replaceText);
// Grab the contents of any unprocessed <a> siblings and flag them for removal.
} else {
if ($sibling->getAttribute('grv-usedalready') != 'yes') {
$sibling->setAttribute('grv-usedalready', 'yes');
$replacementNodes[] = $sibling->cloneNode(true);
$nodesToRemove[] = $sibling;
}
}
}
}
$nodesToRemove[] = $child;
} else {
if ($replacementNodes->count()) {
$nodesToReturn[] = $this->getFlushedBuffer($replacementNodes);
$replacementNodes->fromArray([]);
}
$nodesToReturn[] = $child;
}
}
}
// Flush any remaining replacementNodes left over from text nodes.
if ($replacementNodes->count()) {
$nodesToReturn[] = $this->getFlushedBuffer($replacementNodes);
}
// Remove potential duplicate <a> tags.
foreach ($nodesToReturn as $key => $return) {
if ($nodesToRemove->exists($return)) {
unset($nodesToReturn[$key]);
}
}
$nodesToRemove->remove();
return $nodesToReturn;
}
