perf: defer Gutenberg work outside editors

inc/admin-pages/class-shortcodes-admin-page.php

@@ -10,6 +10,7 @@
 namespace WP_Ultimo\Admin_Pages;
 
 use WP_Ultimo\UI\Base_Element;
+use WP_Ultimo\UI\Field;
 
 // Exit if accessed directly
 defined('ABSPATH') || exit;
@@ -151,7 +152,13 @@ public function get_data() {
 						$params[ $key ]['options'] = '0 | 1';
 						break;
 					case 'select':
-						$params[ $key ]['options'] = implode(' | ', array_keys(wu_get_isset($value, 'options', [])));
+						$options = wu_get_isset($value, 'options', []);
+
+						if (is_callable($options)) {
+							$options = call_user_func($options, new Field($key, $value));
+						}
+
+						$params[ $key ]['options'] = implode(' | ', array_keys($options));
 						break;
 					case 'int':
 						$params[ $key ]['options'] = __('integer', 'ultimate-multisite');

inc/builders/block-editor/class-block-editor-widget-manager.php

@@ -198,39 +198,78 @@ public function load_block_settings($blocks, $element) {
 	}
 
 	/**
-	 * Generates the list of attributes supported based on the fields.
+	 * Generates the list of attributes supported based on element field types and defaults.
 	 *
 	 * @since 2.0.0
+	 * Field definitions are read as metadata only; option providers are not evaluated.
+	 *
 	 * @param \WP_Ultimo\UI\Base_Element $element The element being registered.
 	 * @return array
 	 */
 	public function get_attributes_from_fields($element) {
 
-		$fields = $element->fields();
-
 		$defaults = $element->defaults();
+		$fields   = $element->fields();
 
-		$_fields = [];
+		$attribute_fields = [];
 
 		foreach ($fields as $field_id => $field) {
-			$type = 'string';
+			if ( ! is_array($field)) {
+				continue;
+			}
+
+			$field_type = $field['type'] ?? 'text';
+
+			if ('group' === $field_type && ! empty($field['fields']) && is_array($field['fields'])) {
+				foreach ($field['fields'] as $sub_field_id => $sub_field) {
+					if (is_array($sub_field)) {
+						$attribute_fields[ $sub_field_id ] = $sub_field;
+					}
+				}
 
-			if ('toggle' === $field['type']) {
-				$type = 'boolean';
+				continue;
 			}
 
-			if ('number' === $field['type']) {
-				$type = 'integer';
+			if (in_array($field_type, ['header', 'note'], true)) {
+				continue;
 			}
 
-			$default_value = wu_get_isset($defaults, $field_id, '');
+			$attribute_fields[ $field_id ] = $field;
+		}
+
+		$attributes = [];
+
+		foreach ($attribute_fields as $field_id => $field) {
+			$has_default   = array_key_exists($field_id, $defaults);
+			$default_value = $has_default ? $defaults[ $field_id ] : ($field['value'] ?? '');
+
+			if ( ! $has_default && ! is_string($default_value) && is_callable($default_value)) {
+				$default_value = '';
+			}
+
+			$field_type = $field['type'] ?? 'text';
+			$type       = 'string';
+
+			if ('toggle' === $field_type) {
+				$type          = 'boolean';
+				$default_value = wu_string_to_bool($default_value);
+			}
+
+			if (in_array($field_type, ['int', 'number'], true)) {
+				$type          = is_float($default_value) ? 'number' : 'integer';
+				$default_value = 'number' === $type ? (float) $default_value : (int) $default_value;
+			}
+
+			if ('string' === $type && is_scalar($default_value)) {
+				$default_value = (string) $default_value;
+			}
 
-			$_fields[ $field_id ] = [
-				'default' => wu_get_isset($field, 'value', $default_value),
+			$attributes[ $field_id ] = [
+				'default' => $default_value,
 				'type'    => $type,
 			];
 		}
 
-		return $_fields;
+		return $attributes;
 	}
 }

inc/compat/class-gutenberg-support.php

@@ -62,6 +62,12 @@ public function init(): void {
 	 */
 	public function add_scripts(): void {
 
+		$screen = get_current_screen();
+
+		if ( ! $screen || ! $screen->is_block_editor()) {
+			return;
+		}
+
 		wp_register_script('wu-gutenberg-support', wu_get_asset('gutenberg-support.js', 'js'), ['jquery'], wu_get_version(), true);
 
 		// translators: the placeholder is replaced with the network name.

inc/functions/pages.php

@@ -107,6 +107,41 @@ function wu_is_new_site_page() {
 	return absint(wu_get_setting('default_new_site_page', 0)) === $post->ID;
 }
 
+/**
+ * Returns a request-memoized list of pages for select field options.
+ *
+ * @since 2.0.0
+ * @param string $default_label The label for the current page option.
+ * @return array
+ */
+function wu_get_pages_as_options($default_label) {
+
+	static $pages_by_context = [];
+
+	$current_page_id = get_the_ID();
+
+	if ( ! $current_page_id && is_admin()) {
+		$requested_page_id = wu_request('post', 0);
+		$current_page_id   = is_scalar($requested_page_id) ? absint($requested_page_id) : 0;
+	}
+
+	$context_key = implode(':', [get_current_blog_id(), $current_page_id, get_current_user_id(), determine_locale()]);
+
+	if ( ! array_key_exists($context_key, $pages_by_context)) {
+		$page_query_args = $current_page_id ? ['exclude' => [$current_page_id]] : []; // phpcs:ignore WordPressVIPMinimum.Performance.WPQueryParams.PostNotIn_exclude
+
+		$pages_by_context[ $context_key ] = get_pages($page_query_args) ?: [];
+	}
+
+	$pages_list = [0 => $default_label];
+
+	foreach ($pages_by_context[ $context_key ] as $page) {
+		$pages_list[ $page->ID ] = $page->post_title;
+	}
+
+	return $pages_list;
+}
+
 /**
  * Checks if the current page is a login page.
  *

inc/ui/class-current-site-element.php

@@ -162,26 +162,12 @@ public function fields() {
 			'value'   => 1,
 		];
 
-		$pages = get_pages(
-			[
-				'exclude' => [get_the_ID()], // phpcs:ignore WordPressVIPMinimum.Performance.WPQueryParams.PostNotIn_exclude
-			]
-		);
-
-		$pages = $pages ?: [];
-
-		$pages_list = [0 => __('Current Page', 'ultimate-multisite')];
-
-		foreach ($pages as $page) {
-			$pages_list[ $page->ID ] = $page->post_title;
-		}
-
 		$fields['breadcrumbs_my_sites_page'] = [
 			'type'    => 'select',
 			'title'   => __('My Sites Page', 'ultimate-multisite'),
 			'value'   => 0,
 			'desc'    => __('The page with the customer sites list.', 'ultimate-multisite'),
-			'options' => $pages_list,
+			'options' => fn() => wu_get_pages_as_options(__('Current Page', 'ultimate-multisite')),
 		];
 
 		$fields['display_description'] = [

inc/ui/class-my-sites-element.php

@@ -162,20 +162,6 @@ public function fields() {
 			],
 		];
 
-		$pages = get_pages(
-			[
-				'exclude' => [get_the_ID()], // phpcs:ignore WordPressVIPMinimum.Performance.WPQueryParams.PostNotIn_exclude
-			]
-		);
-
-		$pages = $pages ?: [];
-
-		$pages_list = [0 => __('Current Page', 'ultimate-multisite')];
-
-		foreach ($pages as $page) {
-			$pages_list[ $page->ID ] = $page->post_title;
-		}
-
 		$fields['custom_manage_page'] = [
 			'type'     => 'select',
 			'title'    => __('Manage Redirect Page', 'ultimate-multisite'),
@@ -185,7 +171,7 @@ public function fields() {
 			'required' => [
 				'site_manage_type' => 'custom_page',
 			],
-			'options'  => $pages_list,
+			'options'  => fn() => wu_get_pages_as_options(__('Current Page', 'ultimate-multisite')),
 		];
 
 		$fields['columns'] = [

inc/ui/class-site-actions-element.php

@@ -182,27 +182,13 @@ public function fields() {
 			'value'   => 1,
 		];
 
-		$pages = get_pages(
-			[
-				'exclude' => [get_the_ID()], // phpcs:ignore WordPressVIPMinimum.Performance.WPQueryParams.PostNotIn_exclude
-			]
-		);
-
-		$pages = $pages ?: [];
-
-		$pages_list = [0 => __('Default', 'ultimate-multisite')];
-
-		foreach ($pages as $page) {
-			$pages_list[ $page->ID ] = $page->post_title;
-		}
-
 		$fields['redirect_after_delete'] = [
 			'type'    => 'select',
 			'title'   => __('Redirect After Delete', 'ultimate-multisite'),
 			'value'   => 0,
 			'desc'    => __('The page to redirect user after delete current site.', 'ultimate-multisite'),
 			'tooltip' => '',
-			'options' => $pages_list,
+			'options' => fn() => wu_get_pages_as_options(__('Default', 'ultimate-multisite')),
 		];
 
 		return $fields;