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Themes: Introduce wp_theme_has_theme_json() for public consumption.

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Adds `wp_theme_has_theme_json()` for public consumption, to replace the private internal Core-only `WP_Theme_JSON_Resolver::theme_has_support()` method. This new global function checks if a theme or its parent has a `theme.json` file.

For performance, results are cached as an integer `1` or `0` in the `'theme_json'` group with `'wp_theme_has_theme_json'` key. This is a non-persistent cache. Why? To make the derived data from `theme.json` is always fresh from the potential modifications done via hooks that can use dynamic data (modify the stylesheet depending on some option, settings depending on user permissions, etc.).

Also adds a new public function `wp_clean_theme_json_cache()` to clear the cache on `'switch_theme'` and `start_previewing_theme'`.

References:
* [https://github.com/WordPress/gutenberg/pull/45168 Gutenberg PR 45168] Add `wp_theme_has_theme_json` as a public API to know whether a theme has a `theme.json`.
* [https://github.com/WordPress/gutenberg/pull/45380 Gutenberg PR 45380] Deprecate `WP_Theme_JSON_Resolver:theme_has_support()`.
* [https://github.com/WordPress/gutenberg/pull/46150 Gutenberg PR 46150] Make `theme.json` object caches non-persistent.
* [https://github.com/WordPress/gutenberg/pull/45979 Gutenberg PR 45979] Don't check if constants set by `wp_initial_constants()` are defined.
* [https://github.com/WordPress/gutenberg/pull/45950 Gutenberg PR 45950] Cleaner logic in `wp_theme_has_theme_json`.

Follow-up to [54493], [53282], [52744], [52049], [50959].

Props oandregal, afragen, alexstine, aristath, azaozz, costdev, flixos90, hellofromTonya, mamaduka, mcsf, ocean90, spacedmonkey.
Fixes #56975.
Built from https://develop.svn.wordpress.org/trunk@55086


git-svn-id: http://core.svn.wordpress.org/trunk@54619 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
hellofromTonya
2023-01-18 11:40:10 +00:00
parent 645d6359b3
commit 8ddb28368a
14 changed files with 95 additions and 39 deletions
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4
wp-includes/block-template-utils.php
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@@ -347,7 +347,7 @@ function _get_block_templates_files( $template_type ) {
* @return array Template item.
*/
function _add_block_template_info( $template_item ) {
if ( ! WP_Theme_JSON_Resolver::theme_has_support() ) {
if ( ! wp_theme_has_theme_json() ) {
return $template_item;
}
@@ -370,7 +370,7 @@ function _add_block_template_info( $template_item ) {
* @return array Template info.
*/
function _add_block_template_part_area_info( $template_info ) {
if ( WP_Theme_JSON_Resolver::theme_has_support() ) {
if ( wp_theme_has_theme_json() ) {
$theme_data = WP_Theme_JSON_Resolver::get_theme_data( array(), array( 'with_supports' => false ) )->get_template_parts();
}