Use recursion in _filter_tree for readability

editor/tree_search.cpp

@@ -57,56 +57,21 @@ void TreeSearch::_clean_callable_cache() {
 	callable_cache = new_callable_cache;
 }
 
-// Makes all tree items invisible that don't match the following criteria:
-// 1. is a matching tree_item
-// 2. is a parent of a matching tree_item
-// 3. is any descendant of a matching tree_item
-void TreeSearch::_filter_tree(const String &p_search_mask) {
-	if (number_matches.size() == 0){
-		return;
-	}
-	HashSet<TreeItem *> visible_as_parent;
-	HashSet<TreeItem *> visible_as_descendant;
+void TreeSearch::_filter_tree() {
+	ERR_FAIL_COND(!tree_reference);
+	_filter_tree(tree_reference->get_root(), false);
+}
 
-	// Mark matching items and all their ancestors (1, 2)
-	for (int i = 0; i < matching_entries.size(); i++) {
-		TreeItem *cur_match = matching_entries[i];
-		TreeItem *current = cur_match;
-		while (current != nullptr && !visible_as_parent.has(current)) {
-			visible_as_parent.insert(current);
-			current = current->get_parent();
-		}
-	}
+void TreeSearch::_filter_tree(TreeItem * p_item, bool p_parent_matching) {
+	bool child_visibility = true;
+	bool visible = number_matches.has(p_item) | p_parent_matching;
 
-	// Mark matching items and all their descendants (1, 3)
-	for (int i = 0; i < matching_entries.size(); i++) {
-		TreeItem *cur_match = matching_entries[i];
-		if (visible_as_descendant.has(cur_match)) {
-			continue;
+	if (!visible){
+		p_item->set_visible(visible);
 	}
-		// Descendents
-		Vector<TreeItem *> descendent_list = { cur_match };
-
-		for (int j = 0; j < descendent_list.size(); j++) {
-			TreeItem *descendent = descendent_list[j];
-			if (visible_as_descendant.has(descendent)) {
-				continue; // Skip subtree if already processed
-			}
-			visible_as_descendant.insert(descendent);
-			
-			// Collect X-level descendents (bit clunky because godot doesn't return get_children as pointers)
-			for (int k = 0; k < descendent->get_child_count(); k++) {
-				TreeItem *child = descendent->get_child(k);
-				descendent_list.push_back(child);
-			}
-		}
-	}
-
-	// Set visibility based on whether items are in either visibility set
-	for (int i = 0; i < ordered_tree_items.size(); i++) {
-		TreeItem *item = ordered_tree_items[i];
-		bool is_visible = visible_as_parent.has(item) || visible_as_descendant.has(item);
-		item->set_visible(is_visible);
+	bool is_matching = _vector_has_bsearch(matching_entries, p_item);
+	for (int i = 0; i < p_item->get_child_count(); i++) {
+		_filter_tree(p_item->get_child(i), is_matching | p_parent_matching);
 	}
 }
 
@@ -468,7 +433,7 @@ void TreeSearch::update_search(Tree *p_tree) {
 	_clear_filter();
 	_highlight_tree();
 	if (search_mode == TreeSearchMode::FILTER) {
-		_filter_tree(search_mask);
+		_filter_tree();
 		was_filtered_recently = true;
 	} else if (was_filtered_recently) {
 		_clear_filter();

editor/tree_search.h

@@ -69,7 +69,8 @@ private:
 	void _clean_callable_cache();
 
 	// Update_search() calls these
-	void _filter_tree(const String &p_search_mask);
+	void _filter_tree();
+	void _filter_tree(TreeItem *item, bool p_parent_matching);
 	void _clear_filter();
 
 	void _highlight_tree();