xna - How can one impliment multiple control schemes for a single player?

I am working on a platformer and I want to have the player be able to switch control types based on items that may be carried + default controls for things such as water, in the air, on the ground etc...

I understand how to make a player move in anyway I desire but I don't understand how I can encapsulate these behaviors into their own classes and call and apply them to the player when needed.

The way I have it is this:

Input is handled by the input class. During the update, the player looks at the input class. It then figures out how it should move itself with a bunch of if statements to figure out what rule set should be applied. For example: Am I in the water? Am I on the ground? Am I in the air? and so on. Based on the previous questions the player object then decides how to interpret the input. After everything is done, the results are edited by world rules which applies things such as gravity, etc...

This seems to work but it is not elegant and results in duplicated code. Its ugly. How should I set up some classes and how should they talk to each other? All I manage to do is make a mess of my code trying to class it out. I have searched around for sometime on how I need to do this but can't find anything.

Any pointers on where I can go to figure this out? Any advice? I just know I need the code contained so it's easy to debug later and figure out what is happening.