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Initialize Block Theme Previews hooks on plugins_loaded action #5107

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okmttdhr wants to merge 5 commits into from
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Initialize Block Theme Previews hooks on plugins_loaded action #5107

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d691049
Initialize Theme Preview Hooks on plugins_loaded action
okmttdhr Aug 29, 2023
08f3c9d
Add a comment in a docblock style
okmttdhr Aug 30, 2023
1dfbbd4
Add a test for initialize_theme_preview_hooks
okmttdhr Aug 30, 2023
7584d53
Add missing end period
okmttdhr Aug 31, 2023
4a693c3
Remove whitespace
okmttdhr Aug 31, 2023
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3 changes: 3 additions & 0 deletions src/wp-includes/default-filters.php
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Original file line number Diff line number Diff line change
Expand Up @@ -533,6 +533,9 @@
add_action( 'delete_attachment', '_delete_attachment_theme_mod' );
add_action( 'transition_post_status', '_wp_keep_alive_customize_changeset_dependent_auto_drafts', 20, 3 );

// Block Theme Previews.
add_action( 'plugins_loaded', 'initialize_theme_preview_hooks' );

// Calendar widget cache.
add_action( 'save_post', 'delete_get_calendar_cache' );
add_action( 'delete_post', 'delete_get_calendar_cache' );
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21 changes: 15 additions & 6 deletions src/wp-includes/theme-previews.php
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Expand Up @@ -75,10 +75,19 @@ function wp_block_theme_activate_nonce() {
<?php
}

// Attaches filters to enable theme previews in the Site Editor.
if ( ! empty( $_GET['wp_theme_preview'] ) ) {
add_filter( 'stylesheet', 'wp_get_theme_preview_path' );
add_filter( 'template', 'wp_get_theme_preview_path' );
add_action( 'init', 'wp_attach_theme_preview_middleware' );
add_action( 'admin_head', 'wp_block_theme_activate_nonce' );
/**
* Attache filters and actions to enable Block Theme Previews in the Site Editor.
*
* The filters and actions have to be added after `pluggable.php` is included as they may
* trigger code that uses `current_user_can()` which requires functionality from `pluggable.php`.
*
* @since 6.3.2
*/
function initialize_theme_preview_hooks() {
if ( ! empty( $_GET['wp_theme_preview'] ) ) {
add_filter( 'stylesheet', 'wp_get_theme_preview_path' );
add_filter( 'template', 'wp_get_theme_preview_path' );
add_action( 'init', 'wp_attach_theme_preview_middleware' );
add_action( 'admin_head', 'wp_block_theme_activate_nonce' );
}
}
26 changes: 26 additions & 0 deletions tests/phpunit/tests/theme-previews.php
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@@ -0,0 +1,26 @@
<?php

/**
* test wp-includes/theme-previews.php
*
* @group themes
*/
class Tests_Theme_Previews extends WP_UnitTestCase {
public function set_up() {
parent::set_up();
}

public function tear_down() {
unset( $_GET['wp_theme_preview'] );
parent::tear_down();
}

public function test_initialize_theme_preview_hooks() {
$_GET['wp_theme_preview'] = 'twentytwentythree';
do_action( 'plugins_loaded' ); // Ensure `plugins_loaded` triggers `initialize_theme_preview_hooks`.
$this->assertEquals( has_filter( 'stylesheet', 'wp_get_theme_preview_path' ), 10 );
$this->assertEquals( has_filter( 'template', 'wp_get_theme_preview_path' ), 10 );
$this->assertEquals( has_action( 'init', 'wp_attach_theme_preview_middleware' ), 10 );
$this->assertEquals( has_action( 'admin_head', 'wp_block_theme_activate_nonce' ), 10 );
}
}