Factory.swift

//useful to construct the elements of UI fast ,we always write these code in the interface for instance 
/*
let label = UILabel()
        label.translatesAutoresizingMaskIntoConstraints = false
        label.adjustsFontSizeToFitWidth = adjustToFit
        label.text = text
        label.font = UIFont.preferredFont(forTextStyle: fontStyle)
        label.textAlignment = .left
        label.textColor = textColor


*/
//
//  Factory.swift
//  iReceiveFast
//
//  Created by Marc Steven on 2017/8/3.
//  Copyright © 2017年 Marc Zhao. All rights reserved.
//

import UIKit


/// button factory to construct the standard button
///
/// - buttonWithImage: the image of button
/// - sizeToFit:Bool: sizeToFit to make it display well
enum ButtonFactory {
    case buttonWithImage(image:UIImage,cornerRadius:CGFloat,target:Any,selector:(Selector),sizeToFit:Bool)
    var new:UIButton {
        switch self {
        case .buttonWithImage(let image, let cornerRadius,let  target,let selector ,let  sizeToFit):
            return createButtonWithImage(image: image, cornerRadius: cornerRadius, target: target, selector: selector, sizeToFit: sizeToFit)
        //Note:you can add the button with image based on your requirement here 
        }
    }
    fileprivate func createButtonWithImage(image:UIImage,cornerRadius:CGFloat,target:Any,selector:(Selector),sizeToFit:Bool) ->UIButton {
        let button = UIButton()
        button.setImage(image, for: .normal)
        button.addTarget(target, action: selector, for: .touchUpInside)
        button.translatesAutoresizingMaskIntoConstraints = false
        button.layer.cornerRadius = cornerRadius
        button.clipsToBounds = true
        if sizeToFit {
            button.sizeToFit()
        }
        return button
    }
}

enum LabelFactory {
    case standardLabel(text:String,textColor:UIColor,fontStyle:UIFontTextStyle,textAlignment:NSTextAlignment?,sizeToFit:Bool,adjustToFit:Bool)
    var new:UILabel {
        switch self {
        case .standardLabel(let text, let textColor, let fontStyle, let textAlignment, let sizeToFit, let adjustToFit):
            return createStandardLabel(text: text, textColor: textColor, fontStyle: fontStyle, textAlignment: textAlignment, sizeToFit: sizeToFit, adjustToFit: adjustToFit)
            
            
        }
    }
    
    /// Construct standard label
    ///
    /// - Parameters:
    ///   - text: text of label
    ///   - textColor: textColor
    ///   - fontStyle: fontStyle
    ///   - textAlignment: textAlignment
    ///   - sizeToFit: sizeToFit based on the content of label
    ///   - adjustToFit: adjustToFit to make it great
    /// - Returns: <#return value description#>
    fileprivate func createStandardLabel(text:String,textColor:UIColor,fontStyle:UIFontTextStyle,textAlignment:NSTextAlignment?,sizeToFit:Bool,adjustToFit:Bool) ->UILabel{
        let label = UILabel()
        label.translatesAutoresizingMaskIntoConstraints = false
        label.adjustsFontSizeToFitWidth = adjustToFit
        label.text = text
        label.font = UIFont.preferredFont(forTextStyle: fontStyle)
        label.textAlignment = .left
        label.textColor = textColor
        if sizeToFit {
            label.sizeToFit()
        }
        return label
        
    }
}