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<?php |
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|
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namespace Elementor\Core\Utils\Document; |
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|
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use Elementor\Core\Base\Document; |
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use Elementor\Plugin; |
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use Elementor\Utils; |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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class Document_Mutator { |
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|
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const DOCUMENT_ROOT = 'document'; |
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|
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const WIDGET_EL_TYPE = 'widget'; |
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|
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/** @var \Elementor\Elements_Manager */ |
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private $element_manager; |
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|
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/** @var \Elementor\Widgets_Manager */ |
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private $widgets_manager; |
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|
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public function __construct( $element_manager, $widgets_manager ) { |
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$this->element_manager = $element_manager; |
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$this->widgets_manager = $widgets_manager; |
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} |
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|
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public static function instance(): self { |
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return new self( |
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Plugin::$instance->elements_manager, |
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Plugin::$instance->widgets_manager |
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); |
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} |
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|
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/** |
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* Locate a node by id and return a by-reference index [ $id => &$node ] |
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* so callers can mutate the tree in place. |
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* |
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* @return array<string, array&> |
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*/ |
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public function build_ref_index( array &$tree, string $id ): array { |
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$index = []; |
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$this->walk_for_ref_index( $tree, $id, $index ); |
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|
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return $index; |
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} |
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|
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private function walk_for_ref_index( array &$tree, string $id, array &$index ): bool { |
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foreach ( $tree as &$node ) { |
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if ( isset( $node['id'] ) && $node['id'] === $id ) { |
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$index[ $id ] = &$node; |
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return true; |
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} |
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if ( ! empty( $node['elements'] ) && is_array( $node['elements'] ) ) { |
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if ( $this->walk_for_ref_index( $node['elements'], $id, $index ) ) { |
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return true; |
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} |
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} |
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} |
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unset( $node ); |
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|
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return false; |
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} |
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|
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public function find_by_id( array $tree, string $id ): ?array { |
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foreach ( $tree as $node ) { |
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if ( isset( $node['id'] ) && $node['id'] === $id ) { |
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return $node; |
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} |
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|
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if ( ! empty( $node['elements'] ) ) { |
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$found = $this->find_by_id( $node['elements'], $id ); |
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if ( null !== $found ) { |
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return $found; |
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} |
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} |
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} |
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|
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return null; |
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} |
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|
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public function generate_id(): string { |
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return Utils::generate_random_string(); |
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} |
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|
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/** |
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* @return array|\WP_Error |
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*/ |
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public function insert_at( array $tree, string $parent_id, ?int $index, array $element ) { |
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if ( ! isset( $element['id'] ) ) { |
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$element['id'] = $this->generate_id(); |
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} |
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|
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if ( self::DOCUMENT_ROOT === $parent_id ) { |
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$root_child_error = $this->check_document_root_child_allowed( $element ); |
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|
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if ( is_wp_error( $root_child_error ) ) { |
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return $root_child_error; |
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} |
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|
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return $this->splice_into( $tree, $index, $element ); |
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} |
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|
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$result = $this->insert_into_tree( $tree, $parent_id, $index, $element ); |
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|
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if ( is_wp_error( $result ) ) { |
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return $result; |
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} |
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|
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if ( false === $result ) { |
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return new \WP_Error( |
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'elementor_not_found', |
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__( 'Parent element not found.', 'elementor' ), |
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[ 'status' => \WP_Http::NOT_FOUND ] |
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); |
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} |
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|
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return $result; |
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} |
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|
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/** |
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* @return array|\WP_Error |
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*/ |
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public function remove( array $tree, string $id ) { |
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$result = $this->remove_from_tree( $tree, $id ); |
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|
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if ( false === $result ) { |
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return new \WP_Error( |
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'elementor_not_found', |
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__( 'Element not found.', 'elementor' ), |
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[ 'status' => \WP_Http::NOT_FOUND ] |
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); |
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} |
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|
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return $result; |
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} |
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|
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/** |
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* @return array|\WP_Error |
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*/ |
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public function move( array $tree, string $id, string $new_parent_id, ?int $index ) { |
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$node = $this->find_by_id( $tree, $id ); |
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|
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if ( null === $node ) { |
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return new \WP_Error( |
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'elementor_not_found', |
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__( 'Element not found.', 'elementor' ), |
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[ 'status' => \WP_Http::NOT_FOUND ] |
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); |
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} |
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|
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$tree = $this->remove( $tree, $id ); |
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|
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if ( is_wp_error( $tree ) ) { |
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return $tree; |
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} |
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|
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return $this->insert_at( $tree, $new_parent_id, $index, $node ); |
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} |
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|
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/** |
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* Duplicate an element in place, inserting the clone right after the source |
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* inside the same parent. All ids in the clone are regenerated. |
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* |
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* @return array|\WP_Error |
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*/ |
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public function duplicate( array $tree, string $id ) { |
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$location = $this->locate_parent_and_index( $tree, $id ); |
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|
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if ( null === $location ) { |
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return new \WP_Error( |
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'elementor_not_found', |
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__( 'Element not found.', 'elementor' ), |
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[ 'status' => \WP_Http::NOT_FOUND ] |
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); |
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} |
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|
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[ $parent_id, $index, $node ] = $location; |
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|
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return $this->insert_subtree( $tree, $parent_id, $index + 1, $node ); |
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} |
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|
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/** |
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* Save an elements tree to a document, downgrading `publish` to `draft` |
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* first so no live changes leak out. |
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* |
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* @return true|int|\WP_Error |
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*/ |
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public function save_as_draft( Document $document, array $elements ) { |
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if ( 'publish' === get_post_status( $document->get_main_id() ) ) { |
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wp_update_post( [ |
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'ID' => $document->get_main_id(), |
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'post_status' => 'draft', |
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] ); |
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} |
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|
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return $document->save( [ 'elements' => $elements ] ); |
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} |
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|
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/** |
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* @return array|\WP_Error |
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*/ |
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public function patch_settings( array $tree, string $id, array $partial_settings ) { |
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$result = $this->patch_settings_in_tree( $tree, $id, $partial_settings ); |
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|
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if ( false === $result ) { |
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return new \WP_Error( |
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'elementor_not_found', |
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__( 'Element not found.', 'elementor' ), |
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[ 'status' => \WP_Http::NOT_FOUND ] |
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); |
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} |
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|
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return $result; |
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} |
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|
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/** |
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* Insert a subtree into the document tree, recursively generating IDs for all elements. |
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* |
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* @param array $tree The current document tree. |
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* @param string $parent_id Parent element ID or 'document' for root. |
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* @param int|null $index Insertion index (null = append). |
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* @param array $subtree The subtree to insert (single element with nested children). |
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* |
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* @return array|\WP_Error The updated tree or error. |
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*/ |
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public function insert_subtree( array $tree, string $parent_id, ?int $index, array $subtree ) { |
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$subtree_with_ids = $this->generate_ids_recursive( $subtree ); |
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|
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return $this->insert_at( $tree, $parent_id, $index, $subtree_with_ids ); |
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} |
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|
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/** |
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* Recursively generate IDs for an element and all its children. |
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* Always generates new IDs to avoid duplicates when inserting subtrees. |
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* |
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* @param array $element The element to process. |
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* |
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* @return array The element with new IDs assigned. |
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*/ |
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private function generate_ids_recursive( array $element ): array { |
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$element['id'] = $this->generate_id(); |
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|
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if ( ! empty( $element['elements'] ) && is_array( $element['elements'] ) ) { |
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$element['elements'] = array_map( |
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fn( array $child ) => $this->generate_ids_recursive( $child ), |
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$element['elements'] |
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); |
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} |
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|
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return $element; |
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} |
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|
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/** |
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* @return array{0: string, 1: int, 2: array}|null [ parent_id, index, node ] or null when not found. |
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*/ |
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private function locate_parent_and_index( array $tree, string $id, string $parent_id = self::DOCUMENT_ROOT ): ?array { |
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foreach ( $tree as $i => $node ) { |
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if ( isset( $node['id'] ) && $node['id'] === $id ) { |
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return [ $parent_id, $i, $node ]; |
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} |
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|
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if ( ! empty( $node['elements'] ) && is_array( $node['elements'] ) ) { |
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$found = $this->locate_parent_and_index( $node['elements'], $id, (string) ( $node['id'] ?? '' ) ); |
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if ( null !== $found ) { |
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return $found; |
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} |
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} |
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} |
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|
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return null; |
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} |
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|
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private function splice_into( array $children, ?int $index, array $element ): array { |
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$count = count( $children ); |
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|
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if ( null === $index || $index >= $count ) { |
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$children[] = $element; |
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return $children; |
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} |
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|
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array_splice( $children, $index, 0, [ $element ] ); |
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return $children; |
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} |
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|
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/** |
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* @return array|false|\WP_Error |
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*/ |
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private function insert_into_tree( array $tree, string $parent_id, ?int $index, array $element ) { |
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foreach ( $tree as $i => $node ) { |
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if ( isset( $node['id'] ) && $node['id'] === $parent_id ) { |
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if ( isset( $node['elType'] ) && self::WIDGET_EL_TYPE === $node['elType'] ) { |
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return new \WP_Error( |
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'elementor_invalid_parent', |
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__( 'Cannot insert into a widget element.', 'elementor' ), |
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[ 'status' => \WP_Http::BAD_REQUEST ] |
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); |
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} |
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|
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$child_type_error = $this->check_child_type_allowed( $node, $element ); |
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if ( is_wp_error( $child_type_error ) ) { |
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return $child_type_error; |
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} |
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|
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$node['elements'] = $this->splice_into( $node['elements'] ?? [], $index, $element ); |
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$tree[ $i ] = $node; |
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return $tree; |
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} |
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|
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if ( ! empty( $node['elements'] ) ) { |
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$result = $this->insert_into_tree( $node['elements'], $parent_id, $index, $element ); |
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|
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if ( false !== $result ) { |
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if ( is_wp_error( $result ) ) { |
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return $result; |
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} |
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$node['elements'] = $result; |
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$tree[ $i ] = $node; |
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return $tree; |
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} |
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} |
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} |
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|
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return false; |
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} |
| 328 |
|
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/** |
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* @return array|false |
| 331 |
*/ |
| 332 |
private function remove_from_tree( array $tree, string $id ) { |
| 333 |
foreach ( $tree as $i => $node ) { |
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if ( isset( $node['id'] ) && $node['id'] === $id ) { |
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array_splice( $tree, $i, 1 ); |
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return $tree; |
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} |
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|
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if ( ! empty( $node['elements'] ) ) { |
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$result = $this->remove_from_tree( $node['elements'], $id ); |
| 341 |
if ( false !== $result ) { |
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$node['elements'] = $result; |
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$tree[ $i ] = $node; |
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return $tree; |
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} |
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} |
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} |
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|
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return false; |
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} |
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|
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/** |
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* Mirrors the editor's `Document.isValidChild`: only element types may sit at the document |
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* root, so widgets inserted here would produce a tree the editor itself refuses to create. |
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* |
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* @return null|\WP_Error |
| 357 |
*/ |
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private function check_document_root_child_allowed( array $element ): ?\WP_Error { |
| 359 |
if ( self::WIDGET_EL_TYPE !== ( $element['elType'] ?? '' ) ) { |
| 360 |
return null; |
| 361 |
} |
| 362 |
|
| 363 |
return new \WP_Error( |
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'elementor_invalid_parent', |
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sprintf( |
| 366 |
/* translators: %s: widget type */ |
| 367 |
__( '"%s" is a widget and cannot be a direct child of the document. Wrap it in a container element such as e-flexbox or e-div-block.', 'elementor' ), |
| 368 |
$element['widgetType'] ?? self::WIDGET_EL_TYPE |
| 369 |
), |
| 370 |
[ 'status' => \WP_Http::BAD_REQUEST ] |
| 371 |
); |
| 372 |
} |
| 373 |
|
| 374 |
/** |
| 375 |
* @return null|\WP_Error |
| 376 |
*/ |
| 377 |
private function check_child_type_allowed( array $parent_node, array $child ): ?\WP_Error { |
| 378 |
$parent_instance = $this->element_manager->get_element_types( $parent_node['elType'] ?? '' ); |
| 379 |
|
| 380 |
if ( ! $parent_instance ) { |
| 381 |
return null; |
| 382 |
} |
| 383 |
|
| 384 |
$config = $parent_instance->get_config(); |
| 385 |
$allowed = $config['allowed_child_types'] ?? []; |
| 386 |
|
| 387 |
if ( empty( $allowed ) ) { |
| 388 |
return null; |
| 389 |
} |
| 390 |
|
| 391 |
$child_type = $child['widgetType'] ?? $child['elType'] ?? ''; |
| 392 |
|
| 393 |
if ( ! in_array( $child_type, $allowed, true ) ) { |
| 394 |
return new \WP_Error( |
| 395 |
'elementor_invalid_parent', |
| 396 |
__( 'Element type not allowed as child of this parent.', 'elementor' ), |
| 397 |
[ 'status' => \WP_Http::BAD_REQUEST ] |
| 398 |
); |
| 399 |
} |
| 400 |
|
| 401 |
return null; |
| 402 |
} |
| 403 |
|
| 404 |
/** |
| 405 |
* @return array|false |
| 406 |
*/ |
| 407 |
private function patch_settings_in_tree( array $tree, string $id, array $partial_settings ) { |
| 408 |
foreach ( $tree as $i => $node ) { |
| 409 |
if ( isset( $node['id'] ) && $node['id'] === $id ) { |
| 410 |
$node['settings'] = array_merge( $node['settings'] ?? [], $partial_settings ); |
| 411 |
$tree[ $i ] = $node; |
| 412 |
return $tree; |
| 413 |
} |
| 414 |
|
| 415 |
if ( ! empty( $node['elements'] ) ) { |
| 416 |
$result = $this->patch_settings_in_tree( $node['elements'], $id, $partial_settings ); |
| 417 |
if ( false !== $result ) { |
| 418 |
$node['elements'] = $result; |
| 419 |
$tree[ $i ] = $node; |
| 420 |
return $tree; |
| 421 |
} |
| 422 |
} |
| 423 |
} |
| 424 |
|
| 425 |
return false; |
| 426 |
} |
| 427 |
} |
| 428 |
|
