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Editing: gallery-widget.php
<?php /** * Migration from Jetpack's Gallery Widget to WordPress' Core Gallery Widget. * * @since 5.5 * * @package automattic/jetpack */ /** * Migrates all active instances of Jetpack's Gallery widget to Core's Media Gallery widget. */ function jetpack_migrate_gallery_widget() { // Only trigger the migration from wp-admin and outside unit tests if ( ! is_admin() || defined( 'PHPUNIT_JETPACK_TESTSUITE' ) ) { return; } // Only migrate if the new widget is available and we haven't yet migrated if ( ! class_exists( 'WP_Widget_Media_Gallery' ) || Jetpack_Options::get_option( 'gallery_widget_migration' ) ) { return; } $old_widgets = get_option( 'widget_gallery', array() ); $media_gallery = get_option( 'widget_media_gallery', array() ); $sidebars_widgets = wp_get_sidebars_widgets(); // Array to store legacy widget ids in to unregister on success. $widgets_to_unregister = array(); $old_widgets = array_filter( $old_widgets, 'jetpack_migrate_gallery_widget_is_importable' ); foreach ( $old_widgets as $id => $widget ) { $new_id = $id; // Try to get an unique id for the new type of widget. // It may be the case that the user has already created a core Gallery Widget // before the migration begins. (Maybe Jetpack was deactivated during core's upgrade). for( $i = 0; $i < 10 && in_array( $new_id, array_keys( $media_gallery ) ); $i++, $new_id++ ); $widget_copy = jetpack_migrate_gallery_widget_upgrade_widget( $widget ); if ( null === $widget_copy ) { jetpack_migrate_gallery_widget_bump_stats( 'gallery-widget-skipped' ); continue; } $media_gallery[ $new_id ] = $widget_copy; $sidebars_widgets = jetpack_migrate_gallery_widget_update_sidebars( $sidebars_widgets, $id, $new_id ); $widgets_to_unregister[ $id ] = $new_id; } if ( update_option( 'widget_media_gallery', $media_gallery ) ) { // Now un-register old widgets and register new. foreach ( $widgets_to_unregister as $id => $new_id ) { wp_unregister_sidebar_widget( "gallery-${id}" ); // register new widget. $media_gallery_widget = new WP_Widget_Media_Gallery(); $media_gallery_widget->_set( $new_id ); $media_gallery_widget->_register_one( $new_id ); } wp_set_sidebars_widgets( $sidebars_widgets ); // Log if we migrated all, or some for this site. foreach ( $widgets_to_unregister as $w ) { jetpack_migrate_gallery_widget_bump_stats( 'gallery-widget-migrated' ); } // We need to refresh on widgets page for changes to take effect. // The jetpack_refresh_on_widget_page function is already defined in migrate-to-core/image-widget.php add_action( 'current_screen', 'jetpack_refresh_on_widget_page' ); } Jetpack_Options::update_option( 'gallery_widget_migration', true ); } function jetpack_migrate_gallery_widget_is_importable( $widget ) { // Can be caused by instantiating but not populating a widget in the Customizer. if ( empty( $widget ) ) { return false; } // The array as stored in the option constains two keys and one // is a string `_multiwidget` which does not represent a widget, so we skip it if ( ! is_array( $widget ) ) { return false; } return true; } /** * Returns a transformed version of the Gallery Widget. * Will return null if the widget is either empty, is not an array or has more keys than expected * * @param $widget One of the Jetpack Gallery widgets to be transformed into a new Core Media Gallery Widget * * @return array|null */ function jetpack_migrate_gallery_widget_upgrade_widget( $widget ) { $allowed_keys = array( 'ids' => '', 'link' => '', 'title' => '', 'type' => '', 'random' => '', 'conditions' => '', ); $default_data = array( 'columns' => 3, 'ids' => array(), 'link_type' => '', 'orderby_random' => false, 'size' => 'thumbnail', 'title' => '', 'type' => '', ); if ( ! jetpack_migrate_gallery_widget_is_importable( $widget ) ) { return null; } // Ensure widget has no keys other than those expected. // Not all widgets have conditions, so lets add it in. $widget_copy = array_merge( array( 'conditions' => null ), $widget ); $non_allowed_keys = array_diff_key( $widget_copy, $allowed_keys ); if ( count( $non_allowed_keys ) > 0 ) { jetpack_migrate_gallery_widget_bump_stats( 'extra-key' ); // Log the names of the keys not in our allowed list. foreach ( $non_allowed_keys as $key => $value ) { jetpack_migrate_gallery_widget_bump_stats( "extra-key-$key", "migration-extra-key" ); } } $widget_copy = array_merge( $default_data, $widget, array( // ids in Jetpack's Gallery are a string of comma-separated values. // Core's Media Gallery Widget stores ids in an array 'ids' => explode( ',', $widget['ids'] ), 'link_type' => $widget['link'], 'orderby_random' => isset( $widget['random'] ) && $widget['random'] === 'on', ) ); // Unsetting old widget fields $widget_copy = array_diff_key( $widget_copy, array( 'link' => false, 'random' => false, ) ); return $widget_copy; } /** * Replaces the references to Jetpack Gallery Widget in the sidebars for references to the new version of the widget * * @param $sidebars_widgets The sidebar widgets array to update * @param $id Old id of the widget (basically its index in the array ) * @param $new_id New id that will be using on the sidebar as a new widget * * @return mixed Updated sidebar widgets array */ function jetpack_migrate_gallery_widget_update_sidebars( $sidebars_widgets, $id, $new_id ) { foreach ( $sidebars_widgets as $sidebar => $widgets ) { if ( is_array( $widgets ) && false !== ( $key = array_search( "gallery-{$id}", $widgets, true ) ) ) { $sidebars_widgets[ $sidebar ][ $key ] = "media_gallery-{$new_id}"; // Check if the inactive widgets sidebar exists // Related: https://core.trac.wordpress.org/ticket/14893 if ( ! isset( $sidebars_widgets['wp_inactive_widgets'] ) || ! is_array( $sidebars_widgets['wp_inactive_widgets'] ) ) { $sidebars_widgets['wp_inactive_widgets'] = array(); } $sidebars_widgets['wp_inactive_widgets'][ $key ] = "gallery-{$id}"; } } return $sidebars_widgets; } /** * Will bump stat in jetpack_gallery_widget_migration group. * * @param string $bin The bin to log into. * @param string $group The group name. Defaults to "widget-migration". */ function jetpack_migrate_gallery_widget_bump_stats( $bin, $group = 'widget-migration' ) { // If this is being run on .com bumps_stats_extra exists, but using the filter looks more elegant. if ( function_exists( 'bump_stats_extras' ) ) { $group = "jetpack-$group"; do_action( 'jetpack_bump_stats_extra', $group, $bin ); } else { // $group is prepended with 'jetpack-' $jetpack = Jetpack::init(); $jetpack->stat( $group, $bin ) ; } } add_action( 'widgets_init', 'jetpack_migrate_gallery_widget' );
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