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Merge pull request #87 from joemasilotti/OAStackViewProxy-Swift
OAStackViewProxy
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,183 @@ | ||
| // | ||
| // OAStackViewProxy.swift | ||
| // Masilotti.com | ||
| // | ||
| // Created by Joe Masilotti on 5/4/16. | ||
| // Copyright © 2016 Masilotti.com. All rights reserved. | ||
| // | ||
|
|
||
| import UIKit | ||
|
|
||
| @objc public class OAStackViewProxy: UIView { | ||
| public init() { | ||
| super.init(frame: CGRectZero) | ||
| if #available(iOS 9, *) { | ||
| installFullScreenView(nativeStackView) | ||
| } else { | ||
| installFullScreenView(backwardsCompatibleStackView) | ||
| } | ||
| } | ||
|
|
||
| public init(arrangedSubviews: [UIView]) { | ||
| super.init(frame: CGRectZero) | ||
| if #available(iOS 9, *) { | ||
| installFullScreenView(nativeStackView) | ||
| arrangedSubviews.forEach({ (view) in nativeStackView.addArrangedSubview(view) }) | ||
| } else { | ||
| installFullScreenView(backwardsCompatibleStackView) | ||
| arrangedSubviews.forEach({ (view) in backwardsCompatibleStackView.addArrangedSubview(view) }) | ||
| } | ||
| } | ||
|
|
||
| public required init?(coder aDecoder: NSCoder) { fatalError("Unimplemented.") } | ||
|
|
||
| override public var subviews: [UIView] { | ||
| if #available(iOS 9, *) { | ||
| return nativeStackView.subviews | ||
| } else { | ||
| return backwardsCompatibleStackView.subviews | ||
| } | ||
| } | ||
|
|
||
| public var arrangedSubviews: [UIView] { | ||
| if #available(iOS 9, *) { | ||
| return nativeStackView.arrangedSubviews | ||
| } else { | ||
| return backwardsCompatibleStackView.arrangedSubviews | ||
| } | ||
| } | ||
|
|
||
| public func addArrangedSubview(view: UIView) { | ||
| if #available(iOS 9, *) { | ||
| nativeStackView.addArrangedSubview(view) | ||
| } else { | ||
| backwardsCompatibleStackView.addArrangedSubview(view) | ||
| } | ||
| } | ||
|
|
||
| public func removeArrangedSubview(view: UIView) { | ||
| if #available(iOS 9, *) { | ||
| nativeStackView.removeArrangedSubview(view) | ||
| } else { | ||
| backwardsCompatibleStackView.removeArrangedSubview(view) | ||
| } | ||
| } | ||
|
|
||
| public var axis: UILayoutConstraintAxis = .Horizontal { | ||
| didSet { | ||
| if #available(iOS 9, *) { | ||
| nativeStackView.axis = axis | ||
| } else { | ||
| backwardsCompatibleStackView.axis = axis | ||
| } | ||
| } | ||
| } | ||
|
|
||
| public var distribution: OAStackViewDistribution = .Fill { | ||
| didSet { | ||
| if #available(iOS 9, *) { | ||
| nativeStackView.distribution = UIStackViewDistribution(distribution: distribution) | ||
| } else { | ||
| backwardsCompatibleStackView.distribution = distribution | ||
| } | ||
| } | ||
| } | ||
|
|
||
| public var alignment: OAStackViewAlignment = .Fill { | ||
| didSet { | ||
| if #available(iOS 9, *) { | ||
| nativeStackView.alignment = UIStackViewAlignment(alignment: alignment) | ||
| } else { | ||
| backwardsCompatibleStackView.alignment = alignment | ||
| } | ||
| } | ||
| } | ||
|
|
||
| public var spacing: CGFloat = 0.0 { | ||
| didSet { | ||
| if #available(iOS 9, *) { | ||
| nativeStackView.spacing = spacing | ||
| } else { | ||
| backwardsCompatibleStackView.spacing = spacing | ||
| } | ||
| } | ||
| } | ||
|
|
||
| public var baselineRelativeArrangement: Bool = false { | ||
| didSet { | ||
| if #available(iOS 9, *) { | ||
| nativeStackView.baselineRelativeArrangement = baselineRelativeArrangement | ||
| } | ||
| } | ||
| } | ||
|
|
||
| public var layoutMarginsRelativeArrangement: Bool = false { | ||
| didSet { | ||
| if #available(iOS 9, *) { | ||
| nativeStackView.layoutMarginsRelativeArrangement = layoutMarginsRelativeArrangement | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @available(iOS 9.0, *) | ||
| private lazy var nativeStackView: UIStackView = { | ||
| let stackView = UIStackView() | ||
| stackView.translatesAutoresizingMaskIntoConstraints = false | ||
| return stackView | ||
| }() | ||
|
|
||
| private lazy var backwardsCompatibleStackView: OAStackView = { | ||
| let stackView = OAStackView() | ||
| stackView.translatesAutoresizingMaskIntoConstraints = false | ||
| return stackView | ||
| }() | ||
| } | ||
|
|
||
| @available(iOS 9, *) | ||
| private extension UIStackViewAlignment { | ||
| init(alignment: OAStackViewAlignment) { | ||
| switch alignment { | ||
| case .Fill: | ||
| self = .Fill | ||
| case .Leading: | ||
| self = .Leading | ||
| case .FirstBaseline: | ||
| self = .FirstBaseline | ||
| case .Center: | ||
| self = .Center | ||
| case .Trailing: | ||
| self = .Trailing | ||
| case .Baseline: | ||
| self = .FirstBaseline | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @available(iOS 9, *) | ||
| private extension UIStackViewDistribution { | ||
| init(distribution: OAStackViewDistribution) { | ||
| switch distribution { | ||
| case .Fill: | ||
| self = .Fill | ||
| case .FillEqually: | ||
| self = .FillEqually | ||
| case .FillProportionally: | ||
| self = .FillProportionally | ||
| case .EqualSpacing: | ||
| self = .EqualSpacing | ||
| case .EqualCentering: | ||
| self = .EqualCentering | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private extension UIView { | ||
| func installFullScreenView(view: UIView) { | ||
| addSubview(view) | ||
| view.translatesAutoresizingMaskIntoConstraints = false | ||
|
|
||
| let views = ["view": view] | ||
| addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[view]|", options: [], metrics: nil, views: views)) | ||
| addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|[view]|", options: [], metrics: nil, views: views)) | ||
| } | ||
| } |