executeHandleOutdent function

bool executeHandleOutdent(FluentDocument document)

Handles the TAB and SHIFT+TAB keys.

Lists:

• TAB: indent (moves item as sub-item of the previous one)
• SHIFT+TAB: outdent (promotes to the upper level)

Tables:

• TAB: moves to the next cell (creates new row if needed)
• SHIFT+TAB: moves to the previous cell

Paragraphs:

• TAB: increases indentation (max 10)
• SHIFT+TAB: decreases indentation (min 0) Executes outdent of the current ListItem (also used by Enter on empty item).

Implementation

bool executeHandleOutdent(FluentDocument document) {
  final root = document.content;
  final cursor = document.cursor;
  final container = findLogicalContainer(root, cursor.anchorId);
  if (container == null) return false;
  final ancestorItem = _findAncestor<ListItem>(root, container as FNode);
  if (ancestorItem == null) return false;
  return executeHandleOutdentItem(document, ancestorItem);
}