Support extension

Use Application.shared to allow framework to be linked from extensions.

Motion.podspec

@@ -17,5 +17,4 @@ Pod::Spec.new do |s|
     s.ios.source_files = 'Sources/**/*.swift'
     s.requires_arc = true
   end
-
 end

Motion.xcodeproj/project.pbxproj

@@ -89,6 +89,7 @@
 		96E409AB1F24F7570015A2B5 /* MotionPreprocessor.swift in Headers */ = {isa = PBXBuildFile; fileRef = 96E409621F24F7370015A2B5 /* MotionPreprocessor.swift */; settings = {ATTRIBUTES = (Public, ); }; };
 		96E409AC1F24F7570015A2B5 /* SourcePreprocessor.swift in Headers */ = {isa = PBXBuildFile; fileRef = 96E409631F24F7370015A2B5 /* SourcePreprocessor.swift */; settings = {ATTRIBUTES = (Public, ); }; };
 		96E409AD1F24F7570015A2B5 /* TransitionPreprocessor.swift in Headers */ = {isa = PBXBuildFile; fileRef = 96E409641F24F7370015A2B5 /* TransitionPreprocessor.swift */; settings = {ATTRIBUTES = (Public, ); }; };
+		D4A2ECE521467454003162B4 /* Application.swift in Sources */ = {isa = PBXBuildFile; fileRef = D4A2ECE421467454003162B4 /* Application.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -139,6 +140,7 @@
 		96E409641F24F7370015A2B5 /* TransitionPreprocessor.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = TransitionPreprocessor.swift; sourceTree = "<group>"; };
 		96E409BB1F24FC210015A2B5 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		96E409BC1F24FC300015A2B5 /* LICENSE */ = {isa = PBXFileReference; lastKnownFileType = text; path = LICENSE; sourceTree = "<group>"; };
+		D4A2ECE421467454003162B4 /* Application.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Application.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXGroup section */
@@ -181,6 +183,7 @@
 				96E409BB1F24FC210015A2B5 /* Info.plist */,
 				96E409BC1F24FC300015A2B5 /* LICENSE */,
 				96E4094F1F24F7370015A2B5 /* Motion.h */,
+				D4A2ECE421467454003162B4 /* Application.swift */,
 				965FE9681FDDA1F20098BDD0 /* MotionViewOrderStrategy.swift */,
 				96E409511F24F7370015A2B5 /* MotionAnimation.swift */,
 				96E409521F24F7370015A2B5 /* MotionAnimationState.swift */,
@@ -373,6 +376,7 @@
 				96E409761F24F7370015A2B5 /* MotionAnimation.swift in Sources */,
 				965FE9A31FE4407D0098BDD0 /* MotionTransition+Interactive.swift in Sources */,
 				96E4096B1F24F7370015A2B5 /* Motion+Array.swift in Sources */,
+				D4A2ECE521467454003162B4 /* Application.swift in Sources */,
 				96E409721F24F7370015A2B5 /* Motion+UIViewController.swift in Sources */,
 				96E4097E1F24F7370015A2B5 /* MotionSnapshotType.swift in Sources */,
 				965FE9691FDDA1F20098BDD0 /* MotionViewOrderStrategy.swift in Sources */,

Sources/Application.swift

+/*
+ * Copyright (C) 2015 - 2018, Daniel Dahan and CosmicMind, Inc. <http://cosmicmind.com>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *    *    Redistributions of source code must retain the above copyright notice, this
+ *        list of conditions and the following disclaimer.
+ *
+ *    *    Redistributions in binary form must reproduce the above copyright notice,
+ *        this list of conditions and the following disclaimer in the documentation
+ *        and/or other materials provided with the distribution.
+ *
+ *    *    Neither the name of CosmicMind nor the names of its
+ *        contributors may be used to endorse or promote products derived from
+ *        this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+import UIKit
+
+
+internal class Application {
+    static var shared: UIApplication {
+        let sharedSelector = NSSelectorFromString("sharedApplication")
+        guard UIApplication.responds(to: sharedSelector) else {
+            fatalError("[Motion: Extensions cannot access Application]")
+        }
+        
+        let shared = UIApplication.perform(sharedSelector)
+        return shared?.takeUnretainedValue() as! UIApplication
+    }
+}

Sources/Extensions/Motion+UIViewController.swift

@@ -322,7 +322,7 @@ extension UIViewController {
         next.view.window?.addSubview(next.view)
         
         guard let pvc = presentingVC else {
-          UIApplication.shared.keyWindow?.rootViewController = next
+          Application.shared.keyWindow?.rootViewController = next
           return
         }
         

Sources/Transition/MotionTransition+Complete.swift

@@ -109,7 +109,7 @@ extension MotionTransition {
       if isPresenting != isFinishing, !isContainerController {
         // Only happens when present a .overFullScreen view controller.
         // bug: http://openradar.appspot.com/radar?id=5320103646199808
-        UIApplication.shared.keyWindow?.addSubview(isPresenting ? fv : tv)
+        Application.shared.keyWindow?.addSubview(isPresenting ? fv : tv)
       }
     }