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<?php
/**
* Class SiteOrigin_Panels_Revisions
*
* Handles Page Builder revisions.
*/
class SiteOrigin_Panels_Revisions {
function __construct() {
add_action( 'save_post', array( $this, 'save_post' ), 11, 2 );
add_action( 'wp_restore_post_revision', array( $this, 'revisions_restore' ), 10, 2 );
add_filter( '_wp_post_revision_fields', array( $this, 'revisions_fields' ) );
add_filter( '_wp_post_revision_field_panels_data_field', array( $this, 'revisions_field' ), 10, 3 );
}
/**
* @return SiteOrigin_Panels_Admin
*/
public static function single() {
static $single;
return empty( $single ) ? $single = new self() : $single;
}
/**
* Store the Page Builder meta in the revision.
*
* @param $post_id
* @param $post
*/
function save_post( $post_id, $post ) {
if( is_preview() ) return;
$parent_id = wp_is_post_revision( $post_id );
if ( $parent_id ) {
// Check whether the panels data needs to be copied to the revision.
$panels_data = get_metadata( 'post', $post_id, 'panels_data', true );
if ( empty( $panels_data ) ) {
// If the panels data meta exists for the post parent, copy it into the revision.
$panels_data = get_post_meta( $parent_id, 'panels_data', true );
if ( ! empty( $panels_data ) ) {
add_metadata( 'post', $post_id, 'panels_data', $panels_data );
}
}
}
}
/**
* Restore a revision.
*
* @param $post_id
* @param $revision_id
*/
function revisions_restore( $post_id, $revision_id ) {
$panels_data = get_metadata( 'post', $revision_id, 'panels_data', true );
if ( ! empty( $panels_data ) ) {
update_post_meta( $post_id, 'panels_data', map_deep( $panels_data, array( 'SiteOrigin_Panels_Admin', 'double_slash_string' ) ) );
} else {
delete_post_meta( $post_id, 'panels_data' );
}
}
/**
* Add the Page Builder content revision field.
*
* @param $fields
*
* @return mixed
*/
function revisions_fields( $fields ) {
// Prevent the autosave message.
// TODO figure out how to include Page Builder data into the autosave.
if ( ! function_exists( 'get_current_screen' ) ) {
return $fields;
}
$screen = get_current_screen();
if ( ! empty( $screen ) && $screen->base == 'post' ) {
return $fields;
}
$fields['panels_data_field'] = __( 'Page Builder Content', 'siteorigin-panels' );
return $fields;
}
/**
* Display the Page Builder content for the revision.
*
* @param $value
* @param $field
* @param $revision
*
* @return string
*/
function revisions_field( $value, $field, $revision ) {
$parent_id = wp_is_post_revision( $revision->ID );
$panels_data = get_metadata( 'post', $revision->ID, 'panels_data', true );
if ( empty( $panels_data ) ) {
return '';
}
return siteorigin_panels_render( $parent_id, false, $panels_data );
}
}
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