Ticket #53771: 53771.patch

src/wp-includes/widgets.php

@@ -2060 +2060 @@
                 }
         }
 }
+
+/**
+ * Determines whether a Block Type has been added to one or more Sidebar Widgets.
+ *
+ * @since 5.8.?
+ *
+ * @param string $block_name    Optional. Block Type name (eg: `core/paragraph`).
+ *                              Optional, but needed for checking.
+ * @param bool   $skip_inactive Optional. Whether to check in 'wp_inactive_widgets'.
+ *                              Default true.
+ * @return bool True if the Block Type name to check has been added to one or more Sidebar Widgets.
+ *              False otherwise.
+ */
+function wp_widget_block_has( $block_name = '', $skip_inactive = true ) {
+        $widget_blocks = get_option( 'widget_block', array() );
+        $sidebars      = wp_get_sidebars_widgets();
+
+        if ( ! $widget_blocks || ! $sidebars ) {
+                return false;
+        }
+
+        // Neutralize inactive sidebar.
+        if ( $skip_inactive ) {
+                unset( $sidebars['wp_inactive_widgets'] );
+        }
+
+        $widgets_content = '';
+        foreach ( $widget_blocks as $key => $widget_block ) {
+                $widget_block_reference = 'block-' . $key;
+
+                if ( ! isset( $widget_block['content'] ) || ! $widget_block['content'] ) {
+                        continue;
+                }
+
+                foreach ( $sidebars as $sidebar ) {
+                        if ( is_array( $sidebar ) && in_array( $widget_block_reference, $sidebar, true ) ) {
+                                $widgets_content .= $widget_block['content'] . "\n";
+                        }
+                }
+        }
+
+        return has_block( $block_name, $widgets_content );
+}