refactor: extract editor focus helpers

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

@@ -0,0 +1,51 @@
+use leptos_tiptap::TiptapEditorHandle;
+use wasm_bindgen::{closure::Closure, JsCast};
+use web_sys::window;
+
+use crate::{
+    editor_root_element, editor_runtime::dom_selection::node_is_within_root, EDITOR_STAGE_SELECTOR,
+};
+
+pub(crate) fn schedule_editor_focus(editor: TiptapEditorHandle) {
+    let Some(win) = window() else {
+        return;
+    };
+    let callback = Closure::<dyn FnMut()>::new(move || {
+        let _ = editor.focus();
+    });
+    let _ = win.set_timeout_with_callback_and_timeout_and_arguments_0(
+        callback.as_ref().unchecked_ref(),
+        0,
+    );
+    callback.forget();
+}
+
+pub(crate) fn active_editor_stage() -> bool {
+    let active_element_inside_stage = window()
+        .and_then(|win| win.document())
+        .and_then(|document| document.active_element())
+        .and_then(|element| element.closest(EDITOR_STAGE_SELECTOR).ok().flatten())
+        .is_some();
+
+    if active_element_inside_stage {
+        return true;
+    }
+
+    let Some(root) = editor_root_element() else {
+        return false;
+    };
+    let Some(selection) = window().and_then(|win| win.get_selection().ok().flatten()) else {
+        return false;
+    };
+
+    let anchor_inside = selection
+        .anchor_node()
+        .map(|node| node_is_within_root(node, &root))
+        .unwrap_or(false);
+    let focus_inside = selection
+        .focus_node()
+        .map(|node| node_is_within_root(node, &root))
+        .unwrap_or(false);
+
+    anchor_inside || focus_inside
+}

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

@@ -4,6 +4,7 @@ pub(crate) mod block_menu_document;
 pub(crate) mod block_menu_legacy_html;
 pub(crate) mod command_sync;
 pub(crate) mod dom_selection;
+pub(crate) mod editor_focus;
 pub(crate) mod history_safe_commands;
 pub(crate) mod overlays;
 pub(crate) mod persistence;