djid_sirani_ios/Sirani/Helper/ViewExtensions.swift

//
//  ViewExtensions.swift
//  Sirani
//
//  Created by Anhar Solehudin on 30/03/19.
//  Copyright © 2019 Anhar Solehudin. All rights reserved.
//

import UIKit

extension UIView {
    
    // show / hide view
    func show() {
        isHidden = false
    }
    
    func hide() {
        isHidden = true
    }
    
    // add auto layout contraints on view
    func anchor(top: NSLayoutYAxisAnchor?, bottom: NSLayoutYAxisAnchor?,
                leading: NSLayoutXAxisAnchor?, trailing: NSLayoutXAxisAnchor?,
                padding: UIEdgeInsets = .zero, size: CGSize = .zero) {
        
        translatesAutoresizingMaskIntoConstraints = false
        
        if size.width > 0 {
            widthAnchor.constraint(equalToConstant: size.width).isActive = true
        }
        
        if size.height > 0 {
            heightAnchor.constraint(equalToConstant: size.height).isActive = true
        }
        
        if let top = top {
            topAnchor.constraint(equalTo: top, constant: padding.top).isActive = true
        }
        if let bottom = bottom {
            bottomAnchor.constraint(equalTo: bottom, constant: -padding.bottom).isActive = true
        }
        if let leading = leading {
            leadingAnchor.constraint(equalTo: leading, constant: padding.left).isActive = true
        }
        if let trailing = trailing {
            trailingAnchor.constraint(equalTo: trailing, constant: -padding.right).isActive = true
        }
        
    }
    
    // rotate view
    func rotate(_ toValue: CGFloat, duration: CFTimeInterval = 0.3) {
        let animation = CABasicAnimation(keyPath: "transform.rotation")
        animation.toValue = toValue
        animation.duration = duration
        animation.isRemovedOnCompletion = false
        animation.fillMode = CAMediaTimingFillMode.forwards
        self.layer.add(animation, forKey: nil)
    }
    
}