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+# Graphical user interface with Java FX
+
+The functionality of the user interface is fundamentally tied
+to the database.
+The database is created and filled with activities based on
+the class "Model" supplied together with the assignment.
+
+We have tried to keep a strict separation between Model, View and Controller.
+The view class knows what is on screen,
+but never how it is processed by the controller.
+It knows what arguments to pass on to the controller
+and in some cases what it can expect to receive.
+
+The GUI itself is created based on a helper class GUI.java
+consisting of a public enum containing a category name used for columns
+and a number corresponding to the order the elements are shown in.
+The start() function in Window.java, handling the view,
+creates a List "columns" using the record ActivityColumn.
+There is a lot of repetition in creating the layouts for the columns,
+so the record allows us to cycle through columns based on the column and
+label objects in the GUI class.
+This cycle is where we assign functions to each button after creation.
+
+<!--TODO: create E/R diagram-->
+
+<!--TODO: make database with init_db.txt-->
+
+The database is filled with the init_db.txt file
+based on the commands in there.
+A participation table is created to bridge courses to the student
+to avoid many to many relationships,
+as shown in the E/R diagram.
+
+getSumEcts() in Database.java returns the result of a query
+constructed to return the sum of ECTS for a given program.
+It does not currently work for elective activities,
+as that would require a redesign of the database or a helper class
+that would make the code "inconsistent". <!--maybe find better word-->
+
+The backend was really created alongside the UI,
+as we felt that was the most intuitive way to go about things.
+
+![screendump](pf2display.png)
+
+<!--TODO: fix duplicate activities-->
+
+<!--TODO: add label for subtotal ECTS-->
+
+As the screenshot shows,
+it's not possible to choose the same subject module in both boxes.
+ECTS is calculated dynamically as new activities are added.
+Fonts and styling is consistent across columns,
+and new columns could in theory be added easily as the code
+is modular and reusable.
+