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@IBDesignable view that wraps & renders views from nib files
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// | |
// NibWrapperView.swift | |
// | |
// Created by Alek Åström on 2016-01-13. | |
// http://github.com/mralek | |
// | |
// Copyright © 2016 Alek Åström | |
// Permission is hereby granted, free of charge, to any person obtaining a copy | |
// of this software and associated documentation files (the "Software"), to deal | |
// in the Software without restriction, including without limitation the rights | |
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
// copies of the Software, and to permit persons to whom the Software is | |
// furnished to do so, subject to the following conditions: | |
// | |
// The above copyright notice and this permission notice shall be included in | |
// all copies or substantial portions of the Software. | |
// | |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
// THE SOFTWARE. | |
import UIKit | |
@IBDesignable public class NibWrapperView: UIView { | |
@IBInspectable public var nibName: String? = nil { | |
didSet { | |
guard nibName != oldValue else { | |
return | |
} | |
wrappedView = nibName.flatMap { | |
return viewFromNib($0) | |
} | |
} | |
} | |
public private(set) var wrappedView: UIView? { | |
didSet { | |
oldValue?.removeFromSuperview() | |
if let view = wrappedView { | |
insertSubview(view, atIndex: 0) | |
view.translatesAutoresizingMaskIntoConstraints = false | |
addConstraint(topAnchor.constraintEqualToAnchor(view.topAnchor)) | |
addConstraint(leftAnchor.constraintEqualToAnchor(view.leftAnchor)) | |
addConstraint(rightAnchor.constraintEqualToAnchor(view.rightAnchor)) | |
addConstraint(bottomAnchor.constraintEqualToAnchor(view.bottomAnchor)) | |
} | |
} | |
} | |
public override func intrinsicContentSize() -> CGSize { | |
if let wrappedView = wrappedView { | |
return wrappedView.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize) | |
} else { | |
return CGSize(width: UIViewNoIntrinsicMetric, height: UIViewNoIntrinsicMetric) | |
} | |
} | |
private func viewFromNib(name: String) -> UIView? { | |
let bundle = NSBundle(forClass: self.dynamicType) | |
return bundle.loadNibNamed(name, owner: self, options: nil).first as! UIView? | |
} | |
} |
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