<?php
// Exit if accessed directly
if ( !defined( 'ABSPATH' ) ) exit;
error_reporting( E_ALL );
ini_set( 'display_errors', 1 );
/**
* Provides methods required for preview to work without customizer options.
* This only loads when CTC preview is loaded.
*/
class ChildThemeConfiguratorPreview {
protected $theme;
protected $original_stylesheet;
protected $stylesheet;
protected $template;
protected $priorities = array();
protected $handles = array();
protected $queued = array();
protected $registered;
public function __construct(){
add_action( 'setup_theme', array( $this, 'setup_theme' ) );
add_filter( 'wp_redirect_status', array( $this, 'wp_redirect_status' ), 1000 );
// Do not spawn cron (especially the alternate cron) while running the Customizer.
remove_action( 'init', 'wp_cron' );
// Do not run update checks when rendering the controls.
remove_action( 'admin_init', '_maybe_update_core' );
remove_action( 'admin_init', '_maybe_update_plugins' );
remove_action( 'admin_init', '_maybe_update_themes' );
}
public function check_wp_queue(){
global $wp_filter;
if ( empty( $wp_filter[ 'wp_enqueue_scripts' ] ) )
return;
// Iterate through all the added hook priorities
$this->priorities = array_keys( $wp_filter[ 'wp_enqueue_scripts' ]->callbacks );
// add hook directly after each priority to get any added stylesheet handles
foreach ( $this->priorities as $priority )
add_action( 'wp_enqueue_scripts', array( $this, 'get_handles' ), $priority );
}
public function get_handles(){
global $wp_styles;
// remove priority from stack
$priority = array_shift( $this->priorities );
if ( !is_object( $wp_styles ) )
return;
// get handles queued since last check
$this->handles[ $priority ] = array_diff( $wp_styles->queue, $this->queued );
// add new handles to queued array
$this->queued = array_merge( $this->queued, $this->handles[ $priority ] );
}
public function setup_theme() {
// are we previewing? - removed nonce requirement to bool flag v2.2.5
if ( empty( $_GET['preview_ctc'] ) || !current_user_can( 'switch_themes' ) )
return;
$this->original_stylesheet = get_stylesheet();
$this->theme = wp_get_theme( isset( $_GET[ 'stylesheet' ] ) ? $_GET[ 'stylesheet' ] : NULL );
if ( ! $this->is_theme_active() ):
add_filter( 'template', array( $this, 'get_template' ) );
add_filter( 'stylesheet', array( $this, 'get_stylesheet' ) );
// @link: https://core.trac.wordpress.org/ticket/20027
add_filter( 'pre_option_stylesheet', array( $this, 'get_stylesheet' ) );
add_filter( 'pre_option_template', array( $this, 'get_template' ) );
// swap out theme mods with preview theme mods
add_filter( 'pre_option_theme_mods_' . $this->original_stylesheet, array( $this, 'preview_mods' ) );
endif;
add_action( 'wp_head', array( $this, 'check_wp_queue' ), 0 );
// impossibly high priority to test for stylesheets loaded after wp_head()
add_action( 'wp_print_styles', array( $this, 'test_css' ), 999999 );
// pass the wp_styles queue back to use for stylesheet handle verification
add_action( 'wp_footer', array( $this, 'parse_stylesheet' ) );
send_origin_headers();
// hide admin bar in preview
show_admin_bar( false );
}
/**
* Retrieves child theme mods for preview
*/
public function preview_mods() {
if ( $this->is_theme_active() ) return false;
return get_option( 'theme_mods_' . $this->get_stylesheet() );
}
public function parse_stylesheet() {
echo '<script>/*<![CDATA[' . LF;
$queue = implode( "\n", $this->queued );
global $wp_styles;
$registered = implode( "\n", array_keys( $wp_styles->registered ) );
echo 'BEGIN WP QUEUE' . LF . $queue . LF . 'END WP QUEUE' . LF;
echo 'BEGIN WP REGISTERED' . LF . $registered . LF . 'END WP REGISTERED' . LF;
if ( is_child_theme() ):
// check for signals that indicate specific settings
$file = get_stylesheet_directory() . '/style.css';
if ( file_exists( $file ) && ( $styles = @file_get_contents( $file ) ) ):
// is this child theme a standalone ( framework ) theme?
if ( defined( 'CHLD_THM_CFG_IGNORE_PARENT' ) ):
echo 'CHLD_THM_CFG_IGNORE_PARENT' . LF;
endif;
// has this child theme been configured by CTC? ( If it has the timestamp, it is one of ours. )
if ( preg_match( '#\nUpdated: \d\d\d\d\-\d\d\-\d\d \d\d:\d\d:\d\d\n#s', $styles ) ):
echo 'IS_CTC_THEME' . LF;
endif;
// is this child theme using the @import method?
if ( preg_match( '#\@import\s+url\(.+?\/' . preg_quote( get_template() ) . '\/style\.css.*?\);#s', $styles ) ):
echo 'HAS_CTC_IMPORT' . LF;
endif;
endif;
else:
// Check if the parent style.css file is used at all. If not we can skip the parent stylesheet handling altogether.
$file = get_template_directory() . '/style.css';
if ( file_exists( $file ) && ( $styles = @file_get_contents( $file ) ) ):
$styles = preg_replace( '#\/\*.*?\*\/#s', '', $styles );
if ( preg_match_all( '#\@import\s+(url\()?(.+?)(\))?;#s', $styles, $imports ) ):
echo 'BEGIN IMPORT STYLESHEETS' . LF;
foreach ( $imports[ 2 ] as $import )
echo trim( str_replace( array( "'", '"' ), '', $import ) ) . LF;
echo 'END IMPORT STYLESHEETS' . LF;
elseif ( !preg_match( '#\s*([\[\.\#\:\w][\w\-\s\(\)\[\]\'\^\*\.\#\+:,"=>]+?)\s*\{(.*?)\}#s', $styles ) ):
echo 'NO_CTC_STYLES' . LF;
endif;
endif;
endif;
/**
* Use the filter api to determine the parent stylesheet enqueue priority
* because some themes do not use the standard 10 for various reasons.
* We need to match this priority so that the stylesheets load in the correct order.
*/
echo 'BEGIN CTC IRREGULAR' . LF;
// Iterate through all the added hook priorities
foreach ( $this->handles as $priority => $arr )
// If this is a non-standard priority hook, determine which handles are being enqueued.
// These will then be compared to the primary handle ( style.css )
// to determine the enqueue priority to use for the parent stylesheet.
if ( $priority != 10 && !empty( $arr ) )
echo $priority . ',' . implode( ",", $arr ) . LF;
echo 'END CTC IRREGULAR' . LF;
;
if ( defined( 'WP_CACHE' ) && WP_CACHE )
echo 'HAS_WP_CACHE' . LF;
if ( defined( 'AUTOPTIMIZE_PLUGIN_DIR' ) )
echo 'HAS_AUTOPTIMIZE' . LF;
if ( defined( 'WP_ROCKET_VERSION' ) )
echo 'HAS_WP_ROCKET' . LF;
echo ']]>*/</script>' . LF;
}
// enqueue dummy stylesheet with extremely high priority to test wp_head()
public function test_css() {
wp_enqueue_style( 'ctc-test', get_stylesheet_directory_uri() . '/ctc-test.css' );
}
public function woocommerce_unforce_ssl_checkout( $bool ){
return FALSE;
}
public function wp_redirect_status( $status ) {
return 200;
}
public function is_theme_active() {
return $this->get_stylesheet() == $this->original_stylesheet;
}
public function get_template() {
return $this->theme()->get_template();
}
public function get_stylesheet() {
return $this->theme()->get_stylesheet();
}
public function theme() {
return $this->theme;
}
}