A GUI Component is one of the following:

• Checkbox

• Textfield

• OptionsView

• ColorView

• Table

Each component contains a label and some additional data.
The data for a Table is one of

• empty

• list of Rows

A Row is one of

• empty

• list of Components

Data for each of the remaining components is the default value to be displayed, specified as a String, and the preferred width and height.

• Draw the UML diagram for this collection of classes.

• Develop the templates for methods needed to count the number of primitive GUI elements in a given GUI Component.

• Develop the templates for the methods needed to determines the height of a given GUI Component. The height of the table is the sum of the heights of the Rows. The height of a Row is the maximum size of components in the list of Components.