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serhii-londar/UIButton+Constraints.swift

Created July 10, 2018 10:18
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UIButton+Constraints.swift
import UIKit
extension UIButton {
var topConstraints: [NSLayoutConstraint]? {
return self.superview?.constraints.filter( { ($0.firstItem as? UIButton == self && $0.firstAttribute == .top) || ($0.secondItem as? UIButton == self && $0.secondAttribute == .top) })
}
var leftConstraints: [NSLayoutConstraint]? {
return self.superview?.constraints.filter( { ($0.firstItem as? UIButton == self && $0.firstAttribute == .left) || ($0.secondItem as? UIButton == self && $0.secondAttribute == .left) })
}
var rightConstraints: [NSLayoutConstraint]? {
return self.superview?.constraints.filter( { ($0.firstItem as? UIButton == self && $0.firstAttribute == .right) || ($0.secondItem as? UIButton == self && $0.secondAttribute == .right) })
}
var bottomConstraints: [NSLayoutConstraint]? {
return self.superview?.constraints.filter( { (($0.firstItem as? UIButton) == self && $0.firstAttribute == .bottom) || (($0.secondItem as? UIButton == self) && $0.secondAttribute == .bottom) })
}
}
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