@startuml

class GUI{
    This is a singleton
    ---
    - Image currentImage
    - ImageManipulation[] imageManipulations
    + void initialise()
}


class Image{
    - imagedata image
    + void setImage(imagedata)
    + imagedata getImage()
    + pair<int,int> getDimensions()
}

abstract class ImageManipulation{
    +void manipulateImage(Image, Parameters)
    +string[] getParameters()
    +string getManipulationName()
}

class CropImage{
- string name
}

class GreyScaleImage{
- string name
}

class SmoothImage{
- string name
}

class RotateImage{
- string name
}

class HSVImage{
- string
}

class HueShiftImage{
- string
}

GUI ..> Image
GUI ..> ImageManipulation

CropImage  ..|> ImageManipulation
GreyScaleImage ..|> ImageManipulation
SmoothImage ..|> ImageManipulation
RotateImage ..|> ImageManipulation
HSVImage ..|> ImageManipulation
HueShiftImage ..|> ImageManipulation


@enduml