Xcode Snippets - NSView & UIView IBDesignable

CustomNSViewIBDesignable.swift

import Cocoa

@IBDesignable
class <#ClassName#> : NSView {
    
    override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)
        commonSetup()
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        commonSetup()
    }

    override init() {
        super.init()
        commonSetup()
    }

    private func commonSetup() {
        wantsLayer = true
    }
 
    override func prepareForInterfaceBuilder() {
        
    }

    override var wantsUpdateLayer: Bool {
        return true
    }
    
    override func updateLayer() {
        updateConstraints()
    }
    
    private var layoutOnceToken: dispatch_once_t = 0
    override func updateConstraints() {
        dispatch_once(&layoutOnceToken, {
            // one time only layout code
        })
        super.updateConstraints()
        // adjust layout here
    }
    
}

CustomUIViewIBDesignable.swift

import UIKit

@IBDesignable
class <#ClassName#>: UIView {
    
    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        commonSetup()
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        commonSetup()
    }
    
    override init() {
        super.init(frame: CGRectZero)
        commonSetup()
    }
    
    override func prepareForInterfaceBuilder() {
        updateConstraints()
        commonSetup()
    }
    
    private func commonSetup() {
        
    }
    
    private var layoutOnceToken: dispatch_once_t = 0
    override func updateConstraints() {
        dispatch_once(&layoutOnceToken, {
            // one time only layout code
        })
        super.updateConstraints()
        // adjust layout here
    }
    
}