This application parses an artificial GUI definition language defined in an input file and generates the GUI that it defines. The grammar for this language is defined below:
gui ::=
Window STRING '(' NUMBER ',' NUMBER ')' layout widgets End '.'
layout ::=
Layout layout_type ':'
layout_type ::=
Flow |
Grid '(' NUMBER ',' NUMBER [',' NUMBER ',' NUMBER] ')'
widgets ::=
widget widgets |
widget
widget ::=
Button STRING ';' |
Group radio_buttons End ';' |
Label STRING ';' |
Panel layout widgets End ';' |
Textfield NUMBER ';'
radio_buttons ::=
radio_button radio_buttons |
radio_button
radio_button ::=
Radio STRING ';'
After parsing, it then creates a GUI window using Swing and AWT components.