This widget allows you to edit text fields in a modal dialog on list or form with optional validation and autofocus support.
If a field is read-only, the widget opens only for viewing.
# view
<form>;
....
<field name="comment" widget="textarea_dialog_widget" />;
....
</form>;
<tree>;
....
<field name="comment" widget="textarea_dialog_widget" />;
....
</tree>;