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✏️ Editing: Editor_Preview.php

<?php
/**
 * This file handles the editor preview setting
 *
 * @since   2.0.0
 * @package Code_Snippets
 */

namespace Code_Snippets\Settings;

use function Code_Snippets\Utils\get_editor_themes;

/**
 * Class for handling the editor preview setting.
 *
 * @package Code_Snippets\Settings
 */
class Editor_Preview {

/**
	 * Retrieve the list of code editor themes.
	 *
	 * @return array<string, string> List of editor themes.
	 */
	public static function get_editor_theme_list(): array {
		$themes = [
			'default' => __( 'Default', 'code-snippets' ),
		];

foreach ( get_editor_themes() as $theme ) {
			if ( '-mobile' === substr( $theme, -7 ) ) {
				continue;
			}

$themes[ $theme ] = ucwords( str_replace( '-', ' ', $theme ) );
		}

return $themes;
	}

/**
	 * Render the editor preview setting.
	 */
	public function render() {
		$settings = get_settings_values();
		$settings = $settings['editor'];

$indent_unit = absint( $settings['indent_unit'] );
		$tab_size = absint( $settings['tab_size'] );

$n_tabs = $settings['indent_with_tabs'] ? floor( $indent_unit / $tab_size ) : 0;
		$n_spaces = $settings['indent_with_tabs'] ? $indent_unit % $tab_size : $indent_unit;

$indent = str_repeat( "\t", $n_tabs ) . str_repeat( ' ', $n_spaces );

$code = "add_filter( 'admin_footer_text', function ( \$text ) {\n\n" .
		        $indent . "\$site_name = get_bloginfo( 'name' );\n\n" .
		        $indent . '$text = "Thank you for visiting $site_name.";' . "\n" .
		        $indent . 'return $text;' . "\n" .
		        "} );\n";

echo '<textarea id="code_snippets_editor_preview">', esc_textarea( $code ), '</textarea>';
	}
}

MR SKB