Added support for OS X

* Added "Insets" class which makes EdgeInsets a typealias on iOS and a custom struct on OS X
* Added OS checks and fixed API issues where necessary

Snappy.xcodeproj/project.pbxproj

@@ -14,6 +14,7 @@
 		DD03E3241981B72A00E0DE94 /* ConstraintMaker.swift in Sources */ = {isa = PBXBuildFile; fileRef = DD03E3231981B72A00E0DE94 /* ConstraintMaker.swift */; };
 		DD03E32A1981B7BF00E0DE94 /* View.swift in Sources */ = {isa = PBXBuildFile; fileRef = DD03E3291981B7BF00E0DE94 /* View.swift */; };
 		DDC9FDAE1981B4DD009612C7 /* SnappyTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDC9FDAD1981B4DD009612C7 /* SnappyTests.swift */; };
+		EE1004CB198879AD006CC759 /* Insets.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE1004CA198879AD006CC759 /* Insets.swift */; };
 		EEC6EB4E1985370500C27B12 /* LayoutConstraint.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEC6EB4D1985370500C27B12 /* LayoutConstraint.swift */; };
 /* End PBXBuildFile section */
 
@@ -52,6 +53,7 @@
 		DDC9FD951981B4DD009612C7 /* Snappy.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Snappy.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		DDC9FDA71981B4DD009612C7 /* SnappyTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = SnappyTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		DDC9FDAD1981B4DD009612C7 /* SnappyTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SnappyTests.swift; sourceTree = "<group>"; };
+		EE1004CA198879AD006CC759 /* Insets.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Insets.swift; sourceTree = "<group>"; };
 		EEC6EB4D1985370500C27B12 /* LayoutConstraint.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = LayoutConstraint.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -87,6 +89,7 @@
 		DD03E31A1981B62D00E0DE94 /* Snappy */ = {
 			isa = PBXGroup;
 			children = (
+				EE1004CA198879AD006CC759 /* Insets.swift */,
 				EEC6EB4D1985370500C27B12 /* LayoutConstraint.swift */,
 				DD03E3211981B71C00E0DE94 /* Constraint.swift */,
 				DD03E3231981B72A00E0DE94 /* ConstraintMaker.swift */,
@@ -225,6 +228,7 @@
 				DD03E32A1981B7BF00E0DE94 /* View.swift in Sources */,
 				DD03E3221981B71C00E0DE94 /* Constraint.swift in Sources */,
 				EEC6EB4E1985370500C27B12 /* LayoutConstraint.swift in Sources */,
+				EE1004CB198879AD006CC759 /* Insets.swift in Sources */,
 				DD03E3241981B72A00E0DE94 /* ConstraintMaker.swift in Sources */,
 				DD03E3191981B52F00E0DE94 /* ViewController.swift in Sources */,
 				DD03E3151981B52F00E0DE94 /* AppDelegate.swift in Sources */,

Snappy/Constraint.swift

@@ -22,7 +22,11 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
+#if os(iOS)
 import UIKit
+#else
+import AppKit
+#endif
 
 /**
  * ConstraintAttributes is an options set that maps to NSLayoutAttributes.
@@ -182,7 +186,7 @@ class Constraint {
     func equalTo(other: CGPoint) -> Constraint {
         return constrainTo(other, relation: .Equal)
     }
-    func equalTo(other: UIEdgeInsets) -> Constraint {
+    func equalTo(other: EdgeInsets) -> Constraint {
         return constrainTo(other, relation: .Equal)
     }
     
@@ -206,7 +210,7 @@ class Constraint {
     func lessThanOrEqualTo(other: CGPoint) -> Constraint {
         return constrainTo(other, relation: .LessThanOrEqualTo)
     }
-    func lessThanOrEqualTo(other: UIEdgeInsets) -> Constraint {
+    func lessThanOrEqualTo(other: EdgeInsets) -> Constraint {
         return constrainTo(other, relation: .LessThanOrEqualTo)
     }
     
@@ -230,7 +234,7 @@ class Constraint {
     func greaterThanOrEqualTo(other: CGPoint) -> Constraint {
         return constrainTo(other, relation: .GreaterThanOrEqualTo)
     }
-    func greaterThanOrEqualTo(other: UIEdgeInsets) -> Constraint {
+    func greaterThanOrEqualTo(other: EdgeInsets) -> Constraint {
         return constrainTo(other, relation: .GreaterThanOrEqualTo)
     }
     
@@ -279,14 +283,14 @@ class Constraint {
         self.offset = amount
         return self
     }
-    func offset(amount: UIEdgeInsets) -> Constraint {
+    func offset(amount: EdgeInsets) -> Constraint {
         self.offset = amount
         return self
     }
     
     // MARK: insets
     
-    func insets(amount: UIEdgeInsets) -> Constraint {
+    func insets(amount: EdgeInsets) -> Constraint {
         self.offset = amount
         return self
     }
@@ -359,7 +363,11 @@ class Constraint {
     
     func uninstall() {
         if let view = self.installedOnView {
+            #if os(iOS)
             var installedConstraints = view.constraints()
+            #else
+            var installedConstraints = view.constraints
+            #endif
             var constraintsToRemove: Array<LayoutConstraint> = []
             for installedConstraint in installedConstraints {
                 if let layoutConstraint = installedConstraint as? LayoutConstraint {
@@ -425,7 +433,7 @@ class Constraint {
         self.constant = other
         return constrainTo(ConstraintItem(view: nil, attributes: ConstraintAttributes.None), relation: relation)
     }
-    private func constrainTo(other: UIEdgeInsets, relation: ConstraintRelation) -> Constraint {
+    private func constrainTo(other: EdgeInsets, relation: ConstraintRelation) -> Constraint {
         self.constant = other
         return constrainTo(ConstraintItem(view: nil, attributes: ConstraintAttributes.None), relation: relation)
     }
@@ -482,8 +490,8 @@ private extension NSLayoutAttribute {
                 return -point.y
             }
         }
-            // UIEdgeInsets
+        // EdgeInsets
-        else if let insets = value as? UIEdgeInsets {
+        else if let insets = value as? EdgeInsets {
             if self == .Left {
                 return insets.left
             } else if self == .Top {
@@ -531,8 +539,8 @@ private extension NSLayoutAttribute {
                 return point.y
             }
         }
-        // UIEdgeInsets
+        // EdgeInsets
-        else if let insets = value as? UIEdgeInsets {
+        else if let insets = value as? EdgeInsets {
             if self == .Left {
                 return insets.left
             } else if self == .Top {

Snappy/ConstraintMaker.swift

@@ -22,7 +22,11 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
+#if os(iOS)
 import UIKit
+#else
+import AppKit
+#endif
 
 /**
  * ConstraintMaker is the maker in snappy that gets all constraints kickstarted
@@ -59,7 +63,11 @@ class ConstraintMaker {
     }
     
     internal class func makeConstraints(view: View, block: (make: ConstraintMaker) -> ()) {
+        #if os(iOS)
         view.setTranslatesAutoresizingMaskIntoConstraints(false)
+        #else
+        view.translatesAutoresizingMaskIntoConstraints = false
+        #endif
         let maker = ConstraintMaker(view: view)
         block(make: maker)
         
@@ -71,7 +79,11 @@ class ConstraintMaker {
     }
     
     internal class func remakeConstraints(view: View, block: (make: ConstraintMaker) -> ()) {
+        #if os(iOS)
         view.setTranslatesAutoresizingMaskIntoConstraints(false)
+        #else
+        view.translatesAutoresizingMaskIntoConstraints = false
+        #endif
         let maker = ConstraintMaker(view: view)
         block(make: maker)
         

Snappy/Insets.swift

@@ -0,0 +1,45 @@
+//
+//  Insets.swift
+//  Snappy
+//
+//  Copyright (c) 2011-2014 Masonry Team - https://github.com/Masonry
+//
+//  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.
+
+
+#if os(iOS)
+import UIKit
+typealias EdgeInsets = UIEdgeInsets
+func EdgeInsetsMake(top: CGFloat, left: CGFloat, bottom: CGFloat, right: CGFloat) -> EdgeInsets {
+    return EdgeInsets(top: top, left: left, bottom: bottom, right: right)
+}
+let EdgeInsetsZero = EdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
+#else
+import AppKit
+struct EdgeInsets {
+    var top: CGFloat // specify amount to inset (positive) for each of the edges. values can be negative to 'outset'
+    var left: CGFloat
+    var bottom: CGFloat
+    var right: CGFloat
+}
+func EdgeInsetsMake(top: CGFloat, left: CGFloat, bottom: CGFloat, right: CGFloat) -> EdgeInsets {
+    return EdgeInsets(top: top, left: left, bottom: bottom, right: right)
+}
+let EdgeInsetsZero = EdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
+#endif

Snappy/LayoutConstraint.swift

@@ -22,7 +22,11 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
+#if os(iOS)
 import UIKit
+#else
+import AppKit
+#endif
 
 /**
  * LayoutConstraint is a subclass of NSLayoutConstraint to assist Snappy and also provide better debugging

Snappy/View.swift

@@ -22,9 +22,14 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
+#if os(iOS)
 import UIKit
-
 typealias View = UIView
+#else
+import AppKit
+typealias View = NSView
+#endif
+
 extension View {
 #if SNP_SHORTHAND
     var left: ConstraintItem { return ConstraintItem(view: self, attributes: ConstraintAttributes.Left) }
@@ -50,7 +55,6 @@ extension View {
     func remakeConstraints(block: (maker: ConstraintMaker) -> ()) {
         ConstraintMaker.remakeConstraints(self, block: block)
     }
-    
 #else
     var snp_left: ConstraintItem { return ConstraintItem(view: self, attributes: ConstraintAttributes.Left) }
     var snp_top: ConstraintItem { return ConstraintItem(view: self, attributes: ConstraintAttributes.Top) }

SnappyExample/ViewController.swift

@@ -33,7 +33,7 @@ class ViewController: UIViewController {
         view3.layer.borderWidth = 2
         superview.addSubview(view3)
         
-        let padding = UIEdgeInsets(top: 15, left: 10, bottom: 15, right: 10)
+        let padding = EdgeInsets(top: 15, left: 10, bottom: 15, right: 10)
         
         
         view1.snp_makeConstraints { make in