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<?php
/**
* Theme back compatibility functionality
*
* Prevents Sinatra from running on WordPress versions prior to 4.7,
* since this theme is not meant to be backward compatible beyond that and
* relies on many newer functions and markup changes introduced in 4.7.
*
* @package Sinatra
* @author Sinatra Team <hello@sinatrawp.com>
* @since 1.0.0
*/
/**
* Do not allow direct script access.
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Prevent switching to Highend X on old versions of WordPress.
*
* Switches to the default theme.
*
* @since 1.0.0
*/
function sinatra_switch_theme() {
switch_theme( WP_DEFAULT_THEME );
unset( $_GET['activated'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
add_action( 'admin_notices', 'sinatra_upgrade_notice' );
}
add_action( 'after_switch_theme', 'sinatra_switch_theme' );
/**
* Adds a message for unsuccessful theme switch.
*
* Prints an update nag after an unsuccessful attempt to switch to
* Sinatra on WordPress versions prior to 4.7.
*
* @since 1.0.0
* @global string $wp_version WordPress version.
*/
function sinatra_upgrade_notice() {
/* translators: %s WordPress version */
$message = sprintf( esc_html__( 'Sinatra theme requires at least WordPress version 4.7. You are running version %s. Please upgrade and try again.', 'sinatra' ), $GLOBALS['wp_version'] );
printf( '<div class="error"><p>%s</p></div>', esc_html( $message ) );
}
/**
* Prevents the Customizer from being loaded on WordPress versions prior to 4.7.
*
* @since 1.0.0
* @global string $wp_version WordPress version.
*/
function sinatra_customize_prevent() {
/* translators: %s WordPress version */
$message = sprintf( esc_html__( 'Sinatra theme requires at least WordPress version 4.7. You are running version %s. Please upgrade your WordPress and try again.', 'sinatra' ), $GLOBALS['wp_version'] );
wp_die( esc_html( $message ), '', array( 'back_link' => true ) );
}
add_action( 'load-customize.php', 'sinatra_customize_prevent' );
/**
* Prevents the Theme Preview from being loaded on WordPress versions prior to 4.7.
*
* @since 1.0.0
* @global string $wp_version WordPress version.
*/
function sinatra_preview_prevent() {
if ( isset( $_GET['preview'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
/* translators: %s WordPress version */
$message = sprintf( esc_html__( 'Sinatra theme requires at least WordPress version 4.7. You are running version %s. Please upgrade and try again.', 'sinatra' ), $GLOBALS['wp_version'] );
wp_die( esc_html( $message ) );
}
}
add_action( 'template_redirect', 'sinatra_preview_prevent' );
if ( ! function_exists( 'wp_body_open' ) ) {
/**
* Backward compatibility for wp_body_open hook.
*
* @since 1.0.0
*/
function wp_body_open() { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound
do_action( 'wp_body_open' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound
}
}