| 1 |
<?php |
| 2 |
/** |
| 3 |
* Block template loader functions. |
| 4 |
* |
| 5 |
* @package gutenberg |
| 6 |
*/ |
| 7 |
|
| 8 |
/** |
| 9 |
* Adds necessary filters to use 'wp_template' posts instead of theme template files. |
| 10 |
*/ |
| 11 |
function gutenberg_add_template_loader_filters() { |
| 12 |
if ( ! gutenberg_supports_block_templates() ) { |
| 13 |
return; |
| 14 |
} |
| 15 |
|
| 16 |
foreach ( gutenberg_get_template_type_slugs() as $template_type ) { |
| 17 |
if ( 'embed' === $template_type ) { // Skip 'embed' for now because it is not a regular template type. |
| 18 |
continue; |
| 19 |
} |
| 20 |
add_filter( str_replace( '-', '', $template_type ) . '_template', 'gutenberg_override_query_template', 20, 3 ); |
| 21 |
} |
| 22 |
|
| 23 |
// Request to resolve a template. |
| 24 |
if ( isset( $_GET['_wp-find-template'] ) ) { |
| 25 |
add_filter( 'pre_get_posts', 'gutenberg_resolve_template_for_new_post' ); |
| 26 |
} |
| 27 |
} |
| 28 |
|
| 29 |
add_action( 'wp_loaded', 'gutenberg_add_template_loader_filters' ); |
| 30 |
|
| 31 |
/** |
| 32 |
* Filters into the "{$type}_template" hooks to redirect them to the Full Site Editing template canvas. |
| 33 |
* |
| 34 |
* Internally, this communicates the block content that needs to be used by the template canvas through a global variable. |
| 35 |
* |
| 36 |
* @param string $template Path to the template. See locate_template(). |
| 37 |
* @param string $type Sanitized filename without extension. |
| 38 |
* @param array $templates A list of template candidates, in descending order of priority. |
| 39 |
* @return string The path to the Full Site Editing template canvas file. |
| 40 |
*/ |
| 41 |
function gutenberg_override_query_template( $template, $type, array $templates ) { |
| 42 |
global $_wp_current_template_content; |
| 43 |
|
| 44 |
if ( $template ) { |
| 45 |
// locate_template() has found a PHP template at the path specified by $template. |
| 46 |
// That means that we have a fallback candidate if we cannot find a block template |
| 47 |
// with higher specificity. |
| 48 |
// Thus, before looking for matching block themes, we shorten our list of candidate |
| 49 |
// templates accordingly. |
| 50 |
|
| 51 |
// Locate the index of $template (without the theme directory path) in $templates. |
| 52 |
$relative_template_path = str_replace( |
| 53 |
array( get_stylesheet_directory() . '/', get_template_directory() . '/' ), |
| 54 |
'', |
| 55 |
$template |
| 56 |
); |
| 57 |
$index = array_search( $relative_template_path, $templates, true ); |
| 58 |
|
| 59 |
// If the template hiearchy algorithm has successfully located a PHP template file, |
| 60 |
// we will only consider block templates with higher or equal specificity. |
| 61 |
$templates = array_slice( $templates, 0, $index + 1 ); |
| 62 |
} |
| 63 |
|
| 64 |
$block_template = gutenberg_resolve_template( $type, $templates ); |
| 65 |
|
| 66 |
if ( $block_template ) { |
| 67 |
if ( empty( $block_template->content ) && is_user_logged_in() ) { |
| 68 |
$_wp_current_template_content = |
| 69 |
sprintf( |
| 70 |
/* translators: %s: Template title */ |
| 71 |
__( 'Empty template: %s', 'gutenberg' ), |
| 72 |
$block_template->title |
| 73 |
); |
| 74 |
} elseif ( ! empty( $block_template->content ) ) { |
| 75 |
$_wp_current_template_content = $block_template->content; |
| 76 |
} |
| 77 |
if ( isset( $_GET['_wp-find-template'] ) ) { |
| 78 |
wp_send_json_success( $block_template ); |
| 79 |
} |
| 80 |
} else { |
| 81 |
if ( $template ) { |
| 82 |
return $template; |
| 83 |
} |
| 84 |
|
| 85 |
if ( 'index' === $type ) { |
| 86 |
if ( isset( $_GET['_wp-find-template'] ) ) { |
| 87 |
wp_send_json_error( array( 'message' => __( 'No matching template found.', 'gutenberg' ) ) ); |
| 88 |
} |
| 89 |
} else { |
| 90 |
return false; // So that the template loader keeps looking for templates. |
| 91 |
} |
| 92 |
} |
| 93 |
|
| 94 |
// Add hooks for template canvas. |
| 95 |
// Add viewport meta tag. |
| 96 |
add_action( 'wp_head', 'gutenberg_viewport_meta_tag', 0 ); |
| 97 |
|
| 98 |
// Render title tag with content, regardless of whether theme has title-tag support. |
| 99 |
remove_action( 'wp_head', '_wp_render_title_tag', 1 ); // Remove conditional title tag rendering... |
| 100 |
remove_action( 'wp_head', '_block_template_render_title_tag', 1 ); |
| 101 |
add_action( 'wp_head', 'gutenberg_render_title_tag', 1 ); // ...and make it unconditional. |
| 102 |
|
| 103 |
// This file will be included instead of the theme's template file. |
| 104 |
return gutenberg_dir_path() . 'lib/template-canvas.php'; |
| 105 |
} |
| 106 |
|
| 107 |
/** |
| 108 |
* Return the correct 'wp_template' to render for the request template type. |
| 109 |
* |
| 110 |
* Accepts an optional $template_hierarchy argument as a hint. |
| 111 |
* |
| 112 |
* @param string $template_type The current template type. |
| 113 |
* @param string[] $template_hierarchy (optional) The current template hierarchy, ordered by priority. |
| 114 |
* @return null|WP_Block_Template A block template if found. Null if not. |
| 115 |
*/ |
| 116 |
function gutenberg_resolve_template( $template_type, $template_hierarchy ) { |
| 117 |
if ( ! $template_type ) { |
| 118 |
return null; |
| 119 |
} |
| 120 |
|
| 121 |
if ( empty( $template_hierarchy ) ) { |
| 122 |
$template_hierarchy = array( $template_type ); |
| 123 |
} |
| 124 |
|
| 125 |
$slugs = array_map( |
| 126 |
'gutenberg_strip_php_suffix', |
| 127 |
$template_hierarchy |
| 128 |
); |
| 129 |
|
| 130 |
// Find all potential templates 'wp_template' post matching the hierarchy. |
| 131 |
$query = array( |
| 132 |
'theme' => wp_get_theme()->get_stylesheet(), |
| 133 |
'slug__in' => $slugs, |
| 134 |
); |
| 135 |
$templates = gutenberg_get_block_templates( $query ); |
| 136 |
|
| 137 |
// Order these templates per slug priority. |
| 138 |
// Build map of template slugs to their priority in the current hierarchy. |
| 139 |
$slug_priorities = array_flip( $slugs ); |
| 140 |
|
| 141 |
usort( |
| 142 |
$templates, |
| 143 |
function ( $template_a, $template_b ) use ( $slug_priorities ) { |
| 144 |
return $slug_priorities[ $template_a->slug ] - $slug_priorities[ $template_b->slug ]; |
| 145 |
} |
| 146 |
); |
| 147 |
|
| 148 |
return count( $templates ) ? $templates[0] : null; |
| 149 |
} |
| 150 |
|
| 151 |
/** |
| 152 |
* Displays title tag with content, regardless of whether theme has title-tag support. |
| 153 |
* |
| 154 |
* @see _wp_render_title_tag() |
| 155 |
*/ |
| 156 |
function gutenberg_render_title_tag() { |
| 157 |
echo '<title>' . wp_get_document_title() . '</title>' . "\n"; |
| 158 |
} |
| 159 |
|
| 160 |
/** |
| 161 |
* Returns the markup for the current template. |
| 162 |
*/ |
| 163 |
function gutenberg_get_the_template_html() { |
| 164 |
global $_wp_current_template_content; |
| 165 |
global $wp_embed; |
| 166 |
|
| 167 |
if ( ! $_wp_current_template_content ) { |
| 168 |
if ( is_user_logged_in() ) { |
| 169 |
return '<h1>' . esc_html__( 'No matching template found', 'gutenberg' ) . '</h1>'; |
| 170 |
} |
| 171 |
return; |
| 172 |
} |
| 173 |
|
| 174 |
$content = $wp_embed->run_shortcode( $_wp_current_template_content ); |
| 175 |
$content = $wp_embed->autoembed( $content ); |
| 176 |
$content = do_blocks( $content ); |
| 177 |
$content = wptexturize( $content ); |
| 178 |
$content = wp_filter_content_tags( $content ); |
| 179 |
$content = str_replace( ']]>', ']]>', $content ); |
| 180 |
|
| 181 |
// Wrap block template in .wp-site-blocks to allow for specific descendant styles |
| 182 |
// (e.g. `.wp-site-blocks > *`). |
| 183 |
return '<div class="wp-site-blocks">' . $content . '</div>'; |
| 184 |
} |
| 185 |
|
| 186 |
/** |
| 187 |
* Renders the markup for the current template. |
| 188 |
*/ |
| 189 |
function gutenberg_render_the_template() { |
| 190 |
echo gutenberg_get_the_template_html(); // phpcs:ignore WordPress.Security.EscapeOutput |
| 191 |
} |
| 192 |
|
| 193 |
/** |
| 194 |
* Renders a 'viewport' meta tag. |
| 195 |
* |
| 196 |
* This is hooked into {@see 'wp_head'} to decouple its output from the default template canvas. |
| 197 |
*/ |
| 198 |
function gutenberg_viewport_meta_tag() { |
| 199 |
echo '<meta name="viewport" content="width=device-width, initial-scale=1" />' . "\n"; |
| 200 |
} |
| 201 |
|
| 202 |
/** |
| 203 |
* Strips .php suffix from template file names. |
| 204 |
* |
| 205 |
* @access private |
| 206 |
* |
| 207 |
* @param string $template_file Template file name. |
| 208 |
* @return string Template file name without extension. |
| 209 |
*/ |
| 210 |
function gutenberg_strip_php_suffix( $template_file ) { |
| 211 |
return preg_replace( '/\.(php|html)$/', '', $template_file ); |
| 212 |
} |
| 213 |
|
| 214 |
/** |
| 215 |
* Removes post details from block context when rendering a block template. |
| 216 |
* |
| 217 |
* @param array $context Default context. |
| 218 |
* |
| 219 |
* @return array Filtered context. |
| 220 |
*/ |
| 221 |
function gutenberg_template_render_without_post_block_context( $context ) { |
| 222 |
/* |
| 223 |
* When loading a template or template part directly and not through a page |
| 224 |
* that resolves it, the top-level post ID and type context get set to that |
| 225 |
* of the template part. Templates are just the structure of a site, and |
| 226 |
* they should not be available as post context because blocks like Post |
| 227 |
* Content would recurse infinitely. |
| 228 |
*/ |
| 229 |
if ( isset( $context['postType'] ) && |
| 230 |
( 'wp_template' === $context['postType'] || 'wp_template_part' === $context['postType'] ) ) { |
| 231 |
unset( $context['postId'] ); |
| 232 |
unset( $context['postType'] ); |
| 233 |
} |
| 234 |
|
| 235 |
return $context; |
| 236 |
} |
| 237 |
add_filter( 'render_block_context', 'gutenberg_template_render_without_post_block_context' ); |
| 238 |
|
| 239 |
|
| 240 |
/** |
| 241 |
* Sets the current WP_Query to return auto-draft posts. |
| 242 |
* |
| 243 |
* The auto-draft status indicates a new post, so allow the the WP_Query instance to |
| 244 |
* return an auto-draft post for template resolution when editing a new post. |
| 245 |
* |
| 246 |
* @param WP_Query $wp_query Current WP_Query instance, passed by reference. |
| 247 |
* @return void |
| 248 |
*/ |
| 249 |
function gutenberg_resolve_template_for_new_post( $wp_query ) { |
| 250 |
remove_filter( 'pre_get_posts', 'gutenberg_resolve_template_for_new_post' ); |
| 251 |
|
| 252 |
// Pages. |
| 253 |
$page_id = isset( $wp_query->query['page_id'] ) ? $wp_query->query['page_id'] : null; |
| 254 |
|
| 255 |
// Posts, including custom post types. |
| 256 |
$p = isset( $wp_query->query['p'] ) ? $wp_query->query['p'] : null; |
| 257 |
|
| 258 |
$post_id = $page_id ? $page_id : $p; |
| 259 |
$post = get_post( $post_id ); |
| 260 |
|
| 261 |
if ( |
| 262 |
$post && |
| 263 |
'auto-draft' === $post->post_status && |
| 264 |
current_user_can( 'edit_post', $post->ID ) |
| 265 |
) { |
| 266 |
$wp_query->set( 'post_status', 'auto-draft' ); |
| 267 |
} |
| 268 |
} |
| 269 |
|
| 270 |
/** |
| 271 |
* Redirect the edit links for templates to the site editor. |
| 272 |
* |
| 273 |
* @param string $link The original link. |
| 274 |
* @param int $post_id The custom post id. |
| 275 |
*/ |
| 276 |
function gutenberg_get_edit_template_link( $link, $post_id ) { |
| 277 |
$post = get_post( $post_id ); |
| 278 |
|
| 279 |
if ( ! in_array( $post->post_type, array( 'wp_template', 'wp_template_part' ), true ) ) { |
| 280 |
return $link; |
| 281 |
} |
| 282 |
|
| 283 |
$template = _build_block_template_result_from_post( $post ); |
| 284 |
|
| 285 |
if ( is_wp_error( $template ) ) { |
| 286 |
return $link; |
| 287 |
} |
| 288 |
|
| 289 |
$edit_link = 'themes.php?page=gutenberg-edit-site&postId=%1$s&postType=%2$s'; |
| 290 |
|
| 291 |
return admin_url( sprintf( $edit_link, urlencode( $template->id ), $template->type ) ); |
| 292 |
} |
| 293 |
add_filter( 'get_edit_post_link', 'gutenberg_get_edit_template_link', 10, 2 ); |
| 294 |
|
