A mockup for gocmdchat class structure

gistfile1.go

type Drawable interface {
    Draw()
}

type Selectable interface {
    Draw()
    Select() //button clicked
}

type Rectangle struct {
    x,y int
    width, height int
}

type Button struct {
    rect Rectangle
    OnClick func()
}

func (b *Button) Draw {
    //draw the button
}

func (b *Button) Select() {
    if b.OnClick != nil {
        b.OnClick()
    }
}

type Panel struct {
    rect Rectangle
    children []Drawable
}

func (p *Panel) Draw() {
    //Draw the panel

}