ConceptLayout.swift

//
//  ConceptLayout.swift
//  Concept-Elements-Swift
//
//  Created by Douglas Taquary on 05/11/17.
//  Copyright © 2017. All rights reserved.
//

import UIKit

public class ConceptLayout {

    /**
    Returns an array of constraints

    */
    public class func constraints(_ visualFormat:String, views:[String:AnyObject]) -> [NSLayoutConstraint]
    {
        return NSLayoutConstraint.constraints(withVisualFormat: visualFormat, options: [], metrics: nil, views: views)
    }

    /**
     Returns an constraint between two views
     
     */
    public class func constraintTo(_ item:AnyObject, toItem:AnyObject?, align:NSLayoutAttribute, multiplier: CGFloat = 1, constant: CGFloat = 0 ) -> NSLayoutConstraint
    {
        return NSLayoutConstraint(item: item, attribute: align, relatedBy: .equal, toItem: toItem, attribute: align, multiplier: multiplier, constant: constant)
    }

    /// - Parameters:
    ///   - item: UIView for the constraint.
    ///   - attribute: NSLayoutAttribute enum value which the constraint will be created
    ///   - Parameter value: CGFloat value for the attribute constant value
    /// - Returns: NSLayoutConstraint created
    public class func constraintFor(_ item: UIView, attribute: NSLayoutAttribute, value: CGFloat) -> NSLayoutConstraint {
        return NSLayoutConstraint(item: item, attribute: attribute, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: value)
    }
}