public function test__is_node_empty__no__has_child()
{
$source = '<p><b></b></p>';
$dom = AMP_DOM_Utils::get_dom_from_content($source);
$node = $dom->getElementsByTagName('p')->item(0);
$this->assertFalse(AMP_DOM_Utils::is_node_empty($node));
}
private function strip_tags($node, $tag_names)
{
foreach ($tag_names as $tag_name) {
$elements = $node->getElementsByTagName($tag_name);
$length = $elements->length;
if (0 === $length) {
continue;
}
for ($i = $length - 1; $i >= 0; $i--) {
$element = $elements->item($i);
$parent_node = $element->parentNode;
$parent_node->removeChild($element);
if ('body' !== $parent_node->nodeName && AMP_DOM_Utils::is_node_empty($parent_node)) {
$parent_node->parentNode->removeChild($parent_node);
}
}
}
}
public function sanitize()
{
$nodes = $this->dom->getElementsByTagName(self::$tag);
$num_nodes = $nodes->length;
if (0 === $num_nodes) {
return;
}
for ($i = $num_nodes - 1; $i >= 0; $i--) {
$node = $nodes->item($i);
$old_attributes = AMP_DOM_Utils::get_node_attributes_as_assoc_array($node);
if (!array_key_exists('src', $old_attributes)) {
$node->parentNode->removeChild($node);
continue;
}
$this->did_convert_elements = true;
$new_attributes = $this->filter_attributes($old_attributes);
if (!isset($new_attributes['height'])) {
unset($new_attributes['width']);
$new_attributes['height'] = self::FALLBACK_HEIGHT;
}
if (!isset($new_attributes['width'])) {
$new_attributes['layout'] = 'fixed-height';
}
$new_attributes = $this->enforce_sizes_attribute($new_attributes);
$new_node = AMP_DOM_Utils::create_node($this->dom, 'amp-iframe', $new_attributes);
if (true === $this->args['add_placeholder']) {
$placeholder_node = $this->build_placeholder($new_attributes);
$new_node->appendChild($placeholder_node);
}
$parent_node = $node->parentNode;
if ('p' === strtolower($parent_node->tagName)) {
// AMP does not like iframes in p tags
$parent_node->removeChild($node);
$parent_node->parentNode->insertBefore($new_node, $parent_node->nextSibling);
if (AMP_DOM_Utils::is_node_empty($parent_node)) {
$parent_node->parentNode->removeChild($parent_node);
}
} else {
$parent_node->replaceChild($new_node, $node);
}
}
}
public function sanitize()
{
$nodes = $this->dom->getElementsByTagName(self::$tag);
$num_nodes = $nodes->length;
if (0 === $num_nodes) {
return;
}
for ($i = $num_nodes - 1; $i >= 0; $i--) {
$node = $nodes->item($i);
$old_attributes = AMP_DOM_Utils::get_node_attributes_as_assoc_array($node);
$new_attributes = $this->filter_attributes($old_attributes);
// If the src doesn't exist, remove the node.
// This means that it never existed or was invalidated
// while filtering attributes above.
//
// TODO: add a filter to allow for a fallback element in this instance.
// See: https://github.com/ampproject/amphtml/issues/2261
if (empty($new_attributes['src'])) {
$node->parentNode->removeChild($node);
continue;
}
$this->did_convert_elements = true;
$new_attributes = $this->enforce_fixed_height($new_attributes);
$new_attributes = $this->enforce_sizes_attribute($new_attributes);
$new_node = AMP_DOM_Utils::create_node($this->dom, 'amp-iframe', $new_attributes);
if (true === $this->args['add_placeholder']) {
$placeholder_node = $this->build_placeholder($new_attributes);
$new_node->appendChild($placeholder_node);
}
$parent_node = $node->parentNode;
if ('p' === strtolower($parent_node->tagName)) {
// AMP does not like iframes in p tags
$parent_node->removeChild($node);
$parent_node->parentNode->insertBefore($new_node, $parent_node->nextSibling);
if (AMP_DOM_Utils::is_node_empty($parent_node)) {
$parent_node->parentNode->removeChild($parent_node);
}
} else {
$parent_node->replaceChild($new_node, $node);
}
}
}
