Our user interface is basically complete. You have one more behavior to define for the Window parts: the tabbing order.
The tabbing order specifies how the input focus moves from part to part when the user presses the Tab key (this is referred to as the tab group order). You can further specify the order in which the input focus moves to parts within a tab group when the user presses the arrow keys (this is referred to as the traversal order).
The tabbing order is initially determined by the order in which you add the parts. If you select Set tabbing > Default Ordering from the pop-up menu of a composite part, such as the Window part, the tabbing order of all the subparts is set from left to right, top to bottom within that composite part.
If the default tabbing order doesn't meet your needs, you can further customize the tabbing order by using the tab tags.
To show the tabbing order of a composite part, such as a Window part,
select Set tabbing > Show tab tags
from the part's pop-up menu. This shows tab tags next to all the
subparts included in the tabbing order. Showing the tab tags for the
MainWindowView part's Window part looks as follows:
There are three types of tab tags:
To change the tabbing order of a part, simply find the tab tag labelled with the position you want for the part and then drag it to the part. For example, if you want a List part to be second in the tabbing order and a Text part has the tab tag labelled 2, simply drag the Text part's tab tag to the List part.
When you are finished changing the tabbing order, select Set tabbing > Hide tab tags from the composite part's pop-up menu