What the Library Tile Controller Does

• Looks for a library attribute in session scope.
  • If it is not there, the controller creates a library and stores it in session scope.

• Consults the library's selectedBook property to see if a book has been selected.
  • If so, the controller sets the value of the book session attribute to the selected book.

  • If not, the controller sets the book session attribute to the book for Peter Pan.