UILabel like androids TextView with drawable Left

IconLabel.swift

import UIKit

class IconLabel:UIView{
    var iconPadding: CGFloat = 6 {
        didSet{
            updateConstraintsIfNeeded()
        }
    }
    var text :String?{
        didSet{
            labelView.text = text
            updateFrame()
        }
    }
    var icon :UIImage?{
        didSet{
            imageView.image = icon
            updateFrame()
        }
    }
   var labelView:UILabel = UILabel()
   var imageView:UIImageView = UIImageView()
    
    func commonInit(){
        self.setTranslatesAutoresizingMaskIntoConstraints(false)
        backgroundColor = UIColor.grayColor()
        addSubview(imageView)
        addSubview(labelView)
        labelView.setTranslatesAutoresizingMaskIntoConstraints(false)
        labelView.backgroundColor = UIColor.brownColor()
        labelView.font = UIFont.systemFontOfSize(16)
        labelView.text = text
        imageView.contentMode = .ScaleAspectFit
        imageView.backgroundColor = UIColor.cyanColor()
        imageView.setTranslatesAutoresizingMaskIntoConstraints(false)
        addConstraints()
        
    }
    
    override init() {
        super.init()
        commonInit()
    }
    
    required init(coder aDecoder: NSCoder) {
        super.init(coder:aDecoder)
        commonInit()
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        commonInit()
    }
    
    func updateFrame(){
        invalidateIntrinsicContentSize()
        frame.size = intrinsicContentSize()
        layoutIfNeeded()
    }
    
    func addConstraints() {
        let views:NSDictionary = ["icon":self.imageView,"label":self.labelView]
        let metrics:NSDictionary = ["iconPadding":iconPadding]
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[icon]-(>=iconPadding)-[label]|", options: NSLayoutFormatOptions.DirectionLeadingToTrailing, metrics: metrics, views: views))
        
        addConstraint(NSLayoutConstraint(item: labelView, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1, constant: 0))
    }
   
    override func intrinsicContentSize() -> CGSize {
        if let ic = icon{
           let icSize = ic.size
            let labelSize = labelView.intrinsicContentSize()
            let width = icSize.width + iconPadding + labelSize.width
            let height = max(icSize.height, labelSize.height)
            return CGSize(width: width, height: height)
        }else{
            return labelView.intrinsicContentSize()
        }
    }
    
}