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<?php |
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/** |
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* Block template loader functions. |
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* |
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* @package gutenberg |
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*/ |
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|
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/** |
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* Adds necessary filters to use 'wp_template' posts instead of theme template files. |
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*/ |
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function gutenberg_add_template_loader_filters() { |
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if ( ! gutenberg_is_fse_theme() ) { |
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return; |
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} |
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|
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foreach ( gutenberg_get_template_type_slugs() as $template_type ) { |
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if ( 'embed' === $template_type ) { // Skip 'embed' for now because it is not a regular template type. |
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continue; |
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} |
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add_filter( str_replace( '-', '', $template_type ) . '_template', 'gutenberg_override_query_template', 20, 3 ); |
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} |
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} |
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add_action( 'wp_loaded', 'gutenberg_add_template_loader_filters' ); |
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|
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/** |
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* Get the template hierarchy for a given template type. |
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* |
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* Internally, this filters into the "{$type}_template_hierarchy" hook to record the type-specific template hierarchy. |
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* |
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* @param string $template_type A template type. |
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* @return string[] A list of template candidates, in descending order of priority. |
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*/ |
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function get_template_hierarchy( $template_type ) { |
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if ( ! in_array( $template_type, gutenberg_get_template_type_slugs(), true ) ) { |
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return array(); |
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} |
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|
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$get_template_function = 'get_' . str_replace( '-', '_', $template_type ) . '_template'; // front-page -> get_front_page_template. |
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$template_hierarchy_filter = str_replace( '-', '', $template_type ) . '_template_hierarchy'; // front-page -> frontpage_template_hierarchy. |
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|
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$result = array(); |
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$template_hierarchy_filter_function = function( $templates ) use ( &$result ) { |
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$result = $templates; |
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return $templates; |
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}; |
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|
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add_filter( $template_hierarchy_filter, $template_hierarchy_filter_function, 20, 1 ); |
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call_user_func( $get_template_function ); // This invokes template_hierarchy_filter. |
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remove_filter( $template_hierarchy_filter, $template_hierarchy_filter_function, 20 ); |
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|
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return $result; |
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} |
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|
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/** |
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* Filters into the "{$type}_template" hooks to redirect them to the Full Site Editing template canvas. |
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* |
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* Internally, this communicates the block content that needs to be used by the template canvas through a global variable. |
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* |
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* @param string $template Path to the template. See locate_template(). |
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* @param string $type Sanitized filename without extension. |
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* @param array $templates A list of template candidates, in descending order of priority. |
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* @return string The path to the Full Site Editing template canvas file. |
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*/ |
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function gutenberg_override_query_template( $template, $type, array $templates = array() ) { |
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global $_wp_current_template_content; |
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$current_template = gutenberg_resolve_template( $type, $templates ); |
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|
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if ( $current_template ) { |
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$_wp_current_template_content = empty( $current_template->content ) ? __( 'Empty template.', 'gutenberg' ) : $current_template->content; |
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|
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if ( isset( $_GET['_wp-find-template'] ) ) { |
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wp_send_json_success( $current_template ); |
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} |
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} else { |
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if ( 'index' === $type ) { |
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if ( isset( $_GET['_wp-find-template'] ) ) { |
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wp_send_json_error( array( 'message' => __( 'No matching template found.', 'gutenberg' ) ) ); |
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} |
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} else { |
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return false; // So that the template loader keeps looking for templates. |
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} |
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} |
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|
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// Add hooks for template canvas. |
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// Add viewport meta tag. |
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add_action( 'wp_head', 'gutenberg_viewport_meta_tag', 0 ); |
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|
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// Render title tag with content, regardless of whether theme has title-tag support. |
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remove_action( 'wp_head', '_wp_render_title_tag', 1 ); // Remove conditional title tag rendering... |
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add_action( 'wp_head', 'gutenberg_render_title_tag', 1 ); // ...and make it unconditional. |
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|
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// This file will be included instead of the theme's template file. |
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return gutenberg_dir_path() . 'lib/template-canvas.php'; |
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} |
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|
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/** |
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* Return the correct 'wp_template' to render fot the request template type. |
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* |
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* Accepts an optional $template_hierarchy argument as a hint. |
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* |
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* @param string $template_type The current template type. |
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* @param string[] $template_hierarchy (optional) The current template hierarchy, ordered by priority. |
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* @return null|array { |
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* @type WP_Post|null template_post A template post object, or null if none could be found. |
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* @type int[] A list of template parts IDs for the template. |
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* } |
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*/ |
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function gutenberg_resolve_template( $template_type, $template_hierarchy = array() ) { |
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if ( ! $template_type ) { |
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return null; |
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} |
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|
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if ( empty( $template_hierarchy ) ) { |
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if ( 'index' === $template_type ) { |
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$template_hierarchy = get_template_hierarchy( 'index' ); |
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} else { |
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$template_hierarchy = array_merge( get_template_hierarchy( $template_type ), get_template_hierarchy( 'index' ) ); |
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} |
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} |
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|
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$slugs = array_map( |
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'gutenberg_strip_php_suffix', |
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$template_hierarchy |
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); |
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|
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// Find all potential templates 'wp_template' post matching the hierarchy. |
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$query = array( |
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'theme' => wp_get_theme()->get_stylesheet(), |
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'slug__in' => $slugs, |
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); |
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$templates = gutenberg_get_block_templates( $query ); |
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|
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// Order these templates per slug priority. |
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// Build map of template slugs to their priority in the current hierarchy. |
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$slug_priorities = array_flip( $slugs ); |
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|
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usort( |
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$templates, |
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function ( $template_a, $template_b ) use ( $slug_priorities ) { |
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return $slug_priorities[ $template_a->slug ] - $slug_priorities[ $template_b->slug ]; |
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} |
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); |
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|
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return count( $templates ) ? $templates[0] : null; |
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} |
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|
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/** |
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* Displays title tag with content, regardless of whether theme has title-tag support. |
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* |
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* @see _wp_render_title_tag() |
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*/ |
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function gutenberg_render_title_tag() { |
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echo '<title>' . wp_get_document_title() . '</title>' . "\n"; |
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} |
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|
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/** |
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* Renders the markup for the current template. |
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*/ |
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function gutenberg_render_the_template() { |
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global $_wp_current_template_content; |
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global $wp_embed; |
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|
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if ( ! $_wp_current_template_content ) { |
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echo '<h1>' . esc_html__( 'No matching template found', 'gutenberg' ) . '</h1>'; |
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return; |
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} |
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|
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$content = $wp_embed->run_shortcode( $_wp_current_template_content ); |
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$content = $wp_embed->autoembed( $content ); |
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$content = do_blocks( $content ); |
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$content = wptexturize( $content ); |
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if ( function_exists( 'wp_filter_content_tags' ) ) { |
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$content = wp_filter_content_tags( $content ); |
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} else { |
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$content = wp_make_content_images_responsive( $content ); |
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} |
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$content = str_replace( ']]>', ']]>', $content ); |
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|
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// Wrap block template in .wp-site-blocks to allow for specific descendant styles |
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// (e.g. `.wp-site-blocks > *`). |
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echo '<div class="wp-site-blocks">'; |
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echo $content; // phpcs:ignore WordPress.Security.EscapeOutput |
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echo '</div>'; |
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} |
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|
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/** |
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* Renders a 'viewport' meta tag. |
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* |
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* This is hooked into {@see 'wp_head'} to decouple its output from the default template canvas. |
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*/ |
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function gutenberg_viewport_meta_tag() { |
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echo '<meta name="viewport" content="width=device-width, initial-scale=1" />' . "\n"; |
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} |
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|
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/** |
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* Strips .php suffix from template file names. |
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* |
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* @access private |
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* |
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* @param string $template_file Template file name. |
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* @return string Template file name without extension. |
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*/ |
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function gutenberg_strip_php_suffix( $template_file ) { |
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return preg_replace( '/\.(php|html)$/', '', $template_file ); |
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} |
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|
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/** |
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* Removes post details from block context when rendering a block template. |
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* |
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* @param array $context Default context. |
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* |
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* @return array Filtered context. |
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*/ |
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function gutenberg_template_render_without_post_block_context( $context ) { |
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/* |
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* When loading a template or template part directly and not through a page |
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* that resolves it, the top-level post ID and type context get set to that |
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* of the template part. Templates are just the structure of a site, and |
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* they should not be available as post context because blocks like Post |
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* Content would recurse infinitely. |
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*/ |
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if ( isset( $context['postType'] ) && |
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( 'wp_template' === $context['postType'] || 'wp_template_part' === $context['postType'] ) ) { |
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unset( $context['postId'] ); |
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unset( $context['postType'] ); |
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} |
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|
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return $context; |
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} |
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add_filter( 'render_block_context', 'gutenberg_template_render_without_post_block_context' ); |
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|
