Added iOS extension support via SWIFTMESSAGES_APP_EXTENSIONS at compile time.

Author: amagrude

SwiftMessages.podspec

@@ -8,8 +8,23 @@ Pod::Spec.new do |spec|
     spec.source           = {:git => 'https://github.com/SwiftKickMobile/SwiftMessages.git', :tag => '4.1.2'}
     spec.platform         = :ios, '8.0'
     spec.ios.deployment_target = '8.0'
-    spec.source_files     = 'SwiftMessages/**/*.swift'
-    spec.resource_bundles = {'SwiftMessages' => ['SwiftMessages/Resources/**/*']}
     spec.framework        = 'UIKit'
     spec.requires_arc     = true
+    spec.default_subspec  = 'Core'
+
+    spec.subspec 'Core' do |core|
+        core.source_files = 'SwiftMessages/**/*.swift'
+        core.resource_bundles = {'SwiftMessages' => ['SwiftMessages/Resources/**/*']}
+    end
+    
+    spec.subspec 'AppExtension' do |ext|
+        ext.source_files  = 'SwiftMessages/**/*.swift'
+        ext.resource_bundles = {'SwiftMessages' => ['SwiftMessages/Resources/**/*']}
+
+        # For app extensions, disabling code paths using unavailable API
+        ext.pod_target_xcconfig = {
+            'SWIFT_ACTIVE_COMPILATION_CONDITIONS' => 'SWIFTMESSAGES_APP_EXTENSIONS',
+            'GCC_PREPROCESSOR_DEFINITIONS' => 'SWIFTMESSAGES_APP_EXTENSIONS=1'
+        }
+    end
 end

SwiftMessages/Presenter.swift

@@ -256,12 +256,16 @@ class Presenter: NSObject {
             }
             return conflicts
         } else {
+            #if SWIFTMESSAGES_APP_EXTENSIONS
+            return []
+            #else
             if UIApplication.shared.isStatusBarHidden { return [] }
             if !inNormalWindowLevel || underNavigationBar { return [] }
             let statusBarFrame = UIApplication.shared.statusBarFrame
             let statusBarWindowFrame = window.convert(statusBarFrame, from: nil)
             let statusBarViewFrame = maskingView.convert(statusBarWindowFrame, from: nil)
             return statusBarViewFrame.intersects(maskingView.bounds) ? SafeZoneConflicts.statusBar : []
+            #endif
         }
     }
 
@@ -274,12 +278,16 @@ class Presenter: NSObject {
 
         switch config.presentationContext {
         case .automatic:
+            #if SWIFTMESSAGES_APP_EXTENSIONS
+            throw SwiftMessagesError.noRootViewController
+            #else
             if let rootViewController = UIApplication.shared.keyWindow?.rootViewController {
                 let viewController = rootViewController.sm_selectPresentationContextTopDown(config)
                 return .viewController(Weak(value: viewController))
             } else {
                 throw SwiftMessagesError.noRootViewController
             }
+            #endif
         case .window(let level):
             let viewController = newWindowViewController(level)
             return .viewController(Weak(value: viewController))

SwiftMessages/TopBottomAnimation.swift

@@ -55,7 +55,11 @@ public class TopBottomAnimation: NSObject, Animator {
             container.layoutIfNeeded()
         }, completion: { completed in
             // Fix #131 by always completing if application isn't active.
+            #if SWIFTMESSAGES_APP_EXTENSIONS
+            completion(completed)
+            #else
             completion(completed || UIApplication.shared.applicationState != .active)
+            #endif
         })
     }
 
@@ -136,7 +140,11 @@ public class TopBottomAnimation: NSObject, Animator {
             container.layoutIfNeeded()
         }, completion: { completed in
             // Fix #131 by always completing if application isn't active.
+            #if SWIFTMESSAGES_APP_EXTENSIONS
+            completion(completed)
+            #else
             completion(completed || UIApplication.shared.applicationState != .active)
+            #endif
         })
     }