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<?php
/**
* The 404page block editor plugin class
*
* @since 9
* partially rewritten in 11.4.0, because it stopped working
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
/**
* The block editor plugin class
*/
if ( !class_exists( 'PP_404Page_BlockEditor' ) ) {
class PP_404Page_BlockEditor extends PPF09_SubClass {
/**
* Do Init
*
* @since 9
* @access public
*/
public function init() {
add_action( 'admin_head', array( $this, 'admin_style' ) );
}
/**
* Add Block Editor Style to Header if currently edited page is a custom 404 error page
*
* @since 9
* @access public
*/
public function admin_style() {
if ( $this->is_gutenberg_editing() ) {
?>
<style type="text/css">
.edit-post-layout__content:before { content: "<?php esc_html_e( 'You are currently editing your custom 404 error page', '404page'); ?>"; background-color: #333; color: #FFF; padding: 8px; font-size: 16px; display: block };
</style>
<?php /* since 11.4.0 */ ?>
<script type="text/javascript">
jQuery( document ).ready( function( $ ) {
var checkExist = setInterval( function() {
if ( $( '.edit-post-header-toolbar' ).length ) {
$( '.edit-post-header-toolbar' ).prepend( '<div style="margin-<?php echo ( is_rtl() ? 'right' : 'left' ); ?>: 24px; height: 32px; line-height: 32px; padding: 0 12px; background-color: #000; color: #fff">404</div>' );
clearInterval(checkExist);
}
}, 100);
} );
</script>
<?php
}
}
/**
* Is the 404 page edited in gutenberg editor?
*
* @since 9
* @access private
*/
private function is_gutenberg_editing() {
// Is the current screen the page edit screen and is a custom 404 error page defined?
if ( get_current_screen()->id == 'page' && $this->settings()->get( 'page_id' ) > 0 ) {
// Is the block editor active for pages and is the classic editor not loaded?
if ( function_exists( 'use_block_editor_for_post_type' ) && use_block_editor_for_post_type( 'page' ) && ! isset( $_GET['classic-editor'] ) ) {
global $post;
$all404pages = $this->core()->get_all_page_ids();
// Is the currently edited page a custom 404 error page?
if ( in_array( $post->ID, $all404pages ) ) {
return true;
}
}
}
return false;
}
}
}