Adding an Objective-C compatible API to LayoutKit

LayoutKit.podspec

@@ -11,7 +11,10 @@ Pod::Spec.new do |spec|
 
   spec.ios.deployment_target = '8.0'
   spec.ios.frameworks        = 'Foundation', 'CoreGraphics', 'UIKit'
-  spec.ios.exclude_files     = 'Sources/AppKitSupport.swift'
+  spec.ios.exclude_files     = [
+    'Sources/AppKitSupport.swift',
+    'Sources/ObjCSupport/**'
+  ]
 
   spec.osx.deployment_target = '10.9'
   spec.osx.frameworks        = 'Foundation', 'CoreGraphics', 'AppKit'
@@ -22,14 +25,18 @@ Pod::Spec.new do |spec|
     'Sources/Layouts/ButtonLayout.swift',
     'Sources/Layouts/LabelLayout.swift',
     'Sources/Layouts/TextViewLayout.swift',
+    'Sources/ObjCSupport/**',
     'Sources/Text.swift',
     'Sources/UIKitSupport.swift',
     'Sources/Views/**'
   ]
 
   spec.tvos.deployment_target = '9.0'
   spec.tvos.frameworks        = 'Foundation', 'CoreGraphics', 'UIKit'
-  spec.tvos.exclude_files     = 'Sources/AppKitSupport.swift'
+  spec.tvos.exclude_files     = [
+    'Sources/AppKitSupport.swift',
+    'Sources/ObjCSupport/**'
+  ]
 
 end
 

LayoutKitObjC.podspec

@@ -0,0 +1,47 @@
+Pod::Spec.new do |spec|
+  spec.name              = 'LayoutKitObjC'
+  spec.version           = '6.0.1'
+  spec.license           = { :type => 'Apache License, Version 2.0' }
+  spec.homepage          = 'http://layoutkit.org'
+  spec.authors           = 'LinkedIn'
+  spec.summary           = 'LayoutKit is a fast view layout library for iOS, macOS, and tvOS. Now with Objective-C support.'
+  spec.source            = { :git => 'https://github.com/linkedin/LayoutKit.git', :tag => spec.version }
+  spec.source_files      = 'Sources/**/*.swift'
+  spec.documentation_url = 'http://layoutkit.org'
+
+  spec.ios.deployment_target = '8.0'
+  spec.ios.frameworks        = 'Foundation', 'CoreGraphics', 'UIKit'
+  spec.ios.exclude_files     = 'Sources/AppKitSupport.swift'
+
+  spec.osx.deployment_target = '10.9'
+  spec.osx.frameworks        = 'Foundation', 'CoreGraphics', 'AppKit'
+  spec.osx.exclude_files     = [
+    'Sources/Internal/CGFloatExtension.swift',
+    'Sources/Internal/TextViewDefaultFont.swift',
+    'Sources/Internal/NSAttributedStringExtension.swift',
+    'Sources/Layouts/ButtonLayout.swift',
+    'Sources/Layouts/LabelLayout.swift',
+    'Sources/Layouts/TextViewLayout.swift',
+    'Sources/ObjCSupport/LOKButtonLayout.swift',
+    'Sources/ObjCSupport/LOKButtonLayoutType.swift',
+    'Sources/ObjCSupport/LOKLabelLayout.swift',
+    'Sources/ObjCSupport/LOKLayoutArrangementSection.swift',
+    'Sources/ObjCSupport/LOKLayoutSection.swift',
+    'Sources/ObjCSupport/LOKReloadableViewLayoutAdapter.swift',
+    'Sources/ObjCSupport/LOKTextViewLayout.swift',
+    'Sources/Text.swift',
+    'Sources/UIKitSupport.swift',
+    'Sources/Views/**'
+  ]
+
+  spec.tvos.deployment_target = '9.0'
+  spec.tvos.frameworks        = 'Foundation', 'CoreGraphics', 'UIKit'
+  spec.tvos.exclude_files     = [
+    'Sources/AppKitSupport.swift',
+
+    # Excluded due to "'systemFontSize' is unavailable"
+    'Sources/ObjCSupport/LOKLabelLayout.swift' 
+  ]
+
+end
+

LayoutKitObjCSampleApp/AppDelegate.h

@@ -0,0 +1,17 @@
+// Copyright 2018 LinkedIn Corp.
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+
+@property (nonatomic, strong) UIWindow *window;
+
+
+@end
+

LayoutKitObjCSampleApp/AppDelegate.m

@@ -0,0 +1,58 @@
+// Copyright 2018 LinkedIn Corp.
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+
+
+#import "AppDelegate.h"
+#import "ViewController.h"
+
+@interface AppDelegate ()
+
+@end
+
+@implementation AppDelegate
+
+
+- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+    // Override point for customization after application launch.
+    self.window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds];
+    ViewController *viewController = [[ViewController alloc] init];
+    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
+    self.window.rootViewController = navigationController;
+    [self.window makeKeyAndVisible];
+    return YES;
+}
+
+
+- (void)applicationWillResignActive:(UIApplication *)application {
+    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
+    // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
+}
+
+
+- (void)applicationDidEnterBackground:(UIApplication *)application {
+    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
+    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
+}
+
+
+- (void)applicationWillEnterForeground:(UIApplication *)application {
+    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
+}
+
+
+- (void)applicationDidBecomeActive:(UIApplication *)application {
+    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
+}
+
+
+- (void)applicationWillTerminate:(UIApplication *)application {
+    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
+}
+
+
+@end

LayoutKitObjCSampleApp/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,98 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "83.5x83.5",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "size" : "1024x1024",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

LayoutKitObjCSampleApp/Info.plist

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>Launch Screen</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>

LayoutKitObjCSampleApp/Launch Screen.storyboard

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <viewLayoutGuide key="safeArea" id="Bcu-3y-fUS"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>

LayoutKitObjCSampleApp/RotationLayout.h

@@ -0,0 +1,23 @@
+// Copyright 2018 LinkedIn Corp.
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+
+#import <UIKit/UIKit.h>
+#import <LayoutKit/LayoutKit-Swift.h>
+
+@interface RotationLayout: NSObject <LOKLayout>
+
+@property (nonatomic, nonnull, readonly) id<LOKLayout> sublayout;
+@property (nonatomic, nonnull, readonly) LOKAlignment *alignment;
+@property (nonatomic, nonnull, readonly) LOKFlexibility *flexibility;
+@property (nonatomic, copy, nullable, readonly) NSString *viewReuseId;
+@property (nonatomic, readonly) BOOL needsView;
+
+- (nonnull instancetype)initWithSublayout:(nonnull id<LOKLayout>)sublayout alignment:(nullable LOKAlignment *)alignment viewReuseId:(nullable NSString *)viewReuseId;
+
+@end
+