refactor: extract current block info helper

rust/spikes/leptos-tiptap-spike/src/editor_runtime/dom_selection.rs

@@ -19,6 +19,12 @@ pub(crate) struct SelectionPayload {
     pub(crate) current_block_id: Option<String>,
 }
 
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub(crate) struct CurrentBlockInfo {
+    pub(crate) index: Option<usize>,
+    pub(crate) block_id: Option<String>,
+}
+
 pub(crate) fn node_is_within_root(node: Node, root: &Element) -> bool {
     let mut current = Some(node);
     while let Some(node) = current {
@@ -187,3 +193,15 @@ pub(crate) fn selection_payload(
         current_block_id: current_block_index.and_then(runtime_block_id_from_index),
     }
 }
+
+pub(crate) fn current_block_info_from_index(index: Option<usize>) -> CurrentBlockInfo {
+    index
+        .map(|value| CurrentBlockInfo {
+            index: Some(value),
+            block_id: runtime_block_id_from_index(value),
+        })
+        .unwrap_or(CurrentBlockInfo {
+            index: None,
+            block_id: None,
+        })
+}