57 lines
1.6 KiB
PHP
57 lines
1.6 KiB
PHP
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<?php
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/**
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* Theme previews using the Site Editor for block themes.
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*
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* @package WordPress
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*/
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/**
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* Filters the blog option to return the path for the previewed theme.
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*
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* @since 6.3.0
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*
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* @param string $current_stylesheet The current theme's stylesheet or template path.
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* @return string The previewed theme's stylesheet or template path.
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*/
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function wp_get_theme_preview_path( $current_stylesheet = null ) {
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if ( ! current_user_can( 'switch_themes' ) ) {
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return $current_stylesheet;
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}
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$preview_stylesheet = ! empty( $_GET['wp_theme_preview'] ) ? sanitize_text_field( wp_unslash( $_GET['wp_theme_preview'] ) ) : null;
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$wp_theme = wp_get_theme( $preview_stylesheet );
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if ( ! is_wp_error( $wp_theme->errors() ) ) {
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if ( current_filter() === 'template' ) {
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$theme_path = $wp_theme->get_template();
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} else {
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$theme_path = $wp_theme->get_stylesheet();
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}
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return sanitize_text_field( $theme_path );
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}
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return $current_stylesheet;
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}
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/**
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* Adds a middleware to `apiFetch` to set the theme for the preview.
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* This adds a `wp_theme_preview` URL parameter to API requests from the Site Editor, so they also respond as if the theme is set to the value of the parameter.
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*
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* @since 6.3.0
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*/
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function wp_attach_theme_preview_middleware() {
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// Don't allow non-admins to preview themes.
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if ( ! current_user_can( 'switch_themes' ) ) {
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return;
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}
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wp_add_inline_script(
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'wp-api-fetch',
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sprintf(
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'wp.apiFetch.use( wp.apiFetch.createThemePreviewMiddleware( %s ) );',
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wp_json_encode( sanitize_text_field( wp_unslash( $_GET['wp_theme_preview'] ) ) )
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),
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'after'
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);
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}
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