Finite State Machine controlling GUI

I've been working for months now on my own GUI system (in java) and this is the first time I'm posting someyhing about it, I was never able to find any help on the internet and in the end I thought maybe that was because I was trying to do something in a way noone ever does.. I had created a turn-based-game, so events can only be fired by player or AI, sequentially. I created a Graph containing Cells containing grosso modo ScreenComponents (such as scrolling text with a prompt, images, looping animations, bounded animations). Cells were linked between themselves using a key code. And it was working just fine, I thought I had a good Idea but the absence of answers from the net makes me think I did something wrong, on the papier it's awesome because unless player does something, so it's using nearly zero CPU. So could someone give me the name (if there is one, I really hope so) of what I'm trying to do? I asked my teachers noone was able to help me.