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<?php
defined( 'ABSPATH' ) || exit;
/**
* Prevents theme from running on WordPress versions prior to 4.3,
*
* Since this theme is not meant to be backward compatible beyond that and
* relies on many newer functions and markup changes introduced in 4.3.
*/
if ( ! class_exists( 'Maxcoach_Compatible' ) ) {
class Maxcoach_Compatible {
protected static $instance = null;
public static function instance() {
if ( null === self::$instance ) {
self::$instance = new self();
}
return self::$instance;
}
public function initialize() {
if ( version_compare( $GLOBALS['wp_version'], '4.3', '<' ) ) {
add_action( 'after_switch_theme', array( $this, 'switch_theme' ) );
add_action( 'load-customize.php', array( $this, 'customize' ) );
add_action( 'template_redirect', array( $this, 'preview' ) );
}
}
/**
* Prevent switching to this theme on old versions of WordPress.
*
* Switches to the default theme.
*/
public function switch_theme() {
switch_theme( WP_DEFAULT_THEME, WP_DEFAULT_THEME );
unset( $_GET['activated'] );
add_action( 'admin_notices', array( $this, 'upgrade_notice' ) );
}
/**
* Adds a message for unsuccessful theme switch.
*
* Prints an update nag after an unsuccessful attempt to switch to
* this theme on WordPress versions prior to 4.3.
*
* @global string $wp_version WordPress version.
*/
public function upgrade_notice() {
$message = sprintf( MAXCOACH_THEME_NAME . esc_html__( ' requires at least WordPress version 4.3. You are running version %s. Please upgrade and try again.', 'maxcoach' ), $GLOBALS['wp_version'] );
printf( '<div class="error"><p>%s</p></div>', $message );
}
/**
* Prevents the Customizer from being loaded on WordPress versions prior to 4.3.
*
* @global string $wp_version WordPress version.
*/
public function customize() {
wp_die( sprintf( MAXCOACH_THEME_NAME . esc_html__( ' requires at least WordPress version 4.3. You are running version %s. Please upgrade and try again.', 'maxcoach' ), $GLOBALS['wp_version'] ), '', array(
'back_link' => true,
) );
}
/**
* Prevents the Theme Preview from being loaded on WordPress versions prior to 4.3.
*
* @global string $wp_version WordPress version.
*/
public function preview() {
if ( isset( $_GET['preview'] ) ) {
wp_die( sprintf( MAXCOACH_THEME_NAME . esc_html__( ' requires at least WordPress version 4.3. You are running version %s. Please upgrade and try again.', 'maxcoach' ), $GLOBALS['wp_version'] ) );
}
}
}
Maxcoach_Compatible::instance()->initialize();
}