of taking the contents of the columns, it would always use the file name
instead.
* That uncovered another bug, though: WidgetText::Text() tried to cast everything
to StringAttributeText, but GenericAttributeText is actually used for most
columns.
* Therefore, GenericAttributeText is now a subclass from StringAttributeText.
* Extended the type ahead to take other columns into account, and made it also
find strings in the middle (like a filter) as a second choice.
* Whitespace cleanup.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28180 a95241bf-73f2-0310-859d-f6bbb57e9c96