Table layout in Swift

Layout.swift

import UIKit

infix operator ||| { associativity left precedence 80 }
func ||| (lhs: Layout.Panel, rhs: Layout.Panel) -> Layout.Panel {
    return Layout.Panel(forkType: .Horizontal , panel1: lhs, panel2: rhs)
}

infix operator --- { associativity left precedence 80 }
func --- (lhs: Layout.Panel, rhs: Layout.Panel) -> Layout.Panel {
    return Layout.Panel(forkType: .Vertical , panel1: lhs, panel2: rhs)
}


class Layout {
    
    struct Margin
    {
        let top : CGFloat
        let right : CGFloat
        let bottom : CGFloat
        let left : CGFloat
    }
    
    enum PanelType
    {
        case None;
        case Fork;
    }
    
    enum PanelForkType
    {
        case Vertical
        case Horizontal
    }
    
    class Panel
    {
        let type : PanelType
        let forkType : PanelForkType?
        
        var weight : CGFloat
        var margin : Margin
        
        let view: UIView?
        let panel1 : Panel?
        let panel2 : Panel?
        
        var afterLayout: (UIView -> Void)?
        
        convenience init(view : UIView)
        {
            self.init(view:view, weight:10.0, margin:Margin(top: 0, right: 0, bottom: 0, left: 0))
        }
        
        convenience init(view: UIView, weight: CGFloat)
        {
            self.init(view:view, weight:weight, margin:Margin(top: 0, right: 0, bottom: 0, left: 0))
        }

        init(view: UIView, weight: CGFloat, margin : Margin)
        {
            self.type = .None
            self.view = view
            self.margin = margin
            self.weight = weight
        }
        
        init(forkType: PanelForkType, panel1 : Panel, panel2: Panel)
        {
            self.type = .Fork
            self.forkType = forkType
            self.panel1 = panel1
            self.panel2 = panel2
            
            self.margin = Margin(top: 0, right: 0, bottom: 0, left: 0)
            self.weight = panel1.weight + panel2.weight
        }
        
        func setDefaultWeight()
        {
            self.weight = 10.0
        }
        
        func addTo(view :UIView)
        {
            let frame = view.frame
            self.addTo(view, frame: frame)
        }
        
        private func addTo(view: UIView, frame: CGRect)
        {
            switch(self.type){
            case .None:
                let x = frame.origin.x + self.margin.left
                let y = frame.origin.y + self.margin.top
                let width  = frame.size.width - self.margin.left - self.margin.right
                let height = frame.size.height - self.margin.top - self.margin.bottom
                
                self.view!.frame = CGRect(x:x, y:y, width:width, height:height)
                view.addSubview(self.view!)
                
                self.afterLayout?(self.view!)
                
            case .Fork:
                var frame1 = CGRectZero
                var frame2 = CGRectZero
                
                switch(self.forkType!){
                case .Horizontal:
                    let width = (frame.size.width * self.panel1!.weight) / (self.panel1!.weight + self.panel2!.weight)
                    frame1 = CGRect(x: frame.origin.x, y: frame.origin.y, width: width, height: frame.size.height)
                    frame2 = CGRect(x: frame.origin.x+width, y: frame.origin.y, width: frame.size.width - width, height: frame.size.height)
                case .Vertical:
                    let height = (frame.size.height * self.panel1!.weight) / (self.panel1!.weight + self.panel2!.weight)
                    frame1 = CGRect(x: frame.origin.x, y: frame.origin.y, width: frame.size.width, height: height)
                    frame2 = CGRect(x: frame.origin.x, y: frame.origin.y+height, width: frame.size.width, height: frame.size.height-height)
                }
                
                self.panel1!.addTo(view, frame: frame1)
                self.panel2!.addTo(view, frame: frame2)
            }
        }
    }
}

// The MIT License (MIT)
// Copyright © 2014 Hirose Tatsuya
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the “Software”), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

README
It created by inspired Chris Eidhof - Functional Programming in Swift.
Layout.swift provides easy table layout for display of variety size.
This code is distributed under the terms and conditions of the MIT license.

How to use
Download and import your xcode project.
You can download from here

Altanative
If you want more powerful auto layout library, there is robb/Cartography

Example1

let view0 = UIView()
let view1 = UIView()
let view2 = UIView()
let view3 = UIView()

view0.backgroundColor = UIColor.redColor()
view1.backgroundColor = UIColor.blueColor()
view2.backgroundColor = UIColor.greenColor()
view3.backgroundColor = UIColor.purpleColor()

let p0 = Layout.Panel(view: view0)
let p1 = Layout.Panel(view: view1)
let p2 = Layout.Panel(view: view2)
let p3 = Layout.Panel(view: view3)

let p = p0 ||| p1
        ---
        p2
        ---
        p3

p.addTo(self.view)

Example2

let view0 = UIView()
let view1 = UIView()
let view2 = UIView()
let view3 = UIView()

view0.backgroundColor = UIColor.redColor()
view1.backgroundColor = UIColor.blueColor()
view2.backgroundColor = UIColor.greenColor()
view3.backgroundColor = UIColor.purpleColor()

let p0 = Layout.Panel(view: view0, weight: 20)
let p1 = Layout.Panel(view: view1)
let p2 = Layout.Panel(view: view2)
let p3 = Layout.Panel(view: view3)

let p = p0 ||| p1
        ---
        p2
        ---
        p3

p.addTo(self.view)

Example3

let bg = UIView()
bg.backgroundColor = UIColor.yellowColor()
Layout.Panel(view: bg).addTo(self.view)

let view0 = UIView()
let view1 = UIView()
let view2 = UIView()
let view3 = UIView()

view0.backgroundColor = UIColor.redColor()
view1.backgroundColor = UIColor.blueColor()
view2.backgroundColor = UIColor.greenColor()
view3.backgroundColor = UIColor.purpleColor()

let m = Layout.Margin(top: 10, right: 10, bottom: 10, left:10)

let p0 = Layout.Panel(view: view0, weight: 20, margin: m)
let p1 = Layout.Panel(view: view1)
let p2 = Layout.Panel(view: view2)
let p3 = Layout.Panel(view: view3)

let p = p0 ||| p1
        ---
        p2
        ---
        p3

p.addTo(self.view)