Appearance proxy support for VSAlertController :D

VSAlert-Example/AppDelegate.m

@@ -7,6 +7,9 @@
 
 #import "AppDelegate.h"
 
+#import "VSAlertController.h"
+#import "VSAlertControllerAppearanceProxy.h"
+
 @interface AppDelegate ()
 
 @end
@@ -15,8 +18,9 @@ @implementation AppDelegate
 
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
-    // Override point for customization after application launch.
+
     return YES;
+
 }
 
 

VSAlert.xcodeproj/project.pbxproj

@@ -30,6 +30,9 @@
 		0710F9D41F8BCDBE00C6D084 /* CoreGraphics.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 0710F9D21F8BCDB700C6D084 /* CoreGraphics.framework */; };
 		074538171F8C437700092DAF /* VSAlertControllerTransitionAnimator.h in Headers */ = {isa = PBXBuildFile; fileRef = 074538151F8C437700092DAF /* VSAlertControllerTransitionAnimator.h */; };
 		074538191F8C437700092DAF /* VSAlertControllerTransitionAnimator.m in Sources */ = {isa = PBXBuildFile; fileRef = 074538161F8C437700092DAF /* VSAlertControllerTransitionAnimator.m */; };
+		07F25AB81F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.h in Headers */ = {isa = PBXBuildFile; fileRef = 07F25AB61F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.h */; };
+		07F25AB91F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.m in Sources */ = {isa = PBXBuildFile; fileRef = 07F25AB71F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.m */; };
+		07F25ABA1F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.m in Sources */ = {isa = PBXBuildFile; fileRef = 07F25AB71F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.m */; };
 		07FF9E171F8FEF8C002966A3 /* AlertExample.m in Sources */ = {isa = PBXBuildFile; fileRef = 07FF9E111F8FEF03002966A3 /* AlertExample.m */; };
 		07FF9E181F8FEF8E002966A3 /* AlertExampleSettingsViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 07FF9E0F1F8FEF03002966A3 /* AlertExampleSettingsViewController.m */; };
 		07FF9E191F8FEF92002966A3 /* AlertExampleViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 07FF9E0E1F8FEF03002966A3 /* AlertExampleViewController.m */; };
@@ -85,6 +88,8 @@
 		07A7C4051F8D655100A71580 /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.0.sdk/System/Library/Frameworks/Foundation.framework; sourceTree = DEVELOPER_DIR; };
 		07A7C4071F8D655700A71580 /* UIKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = UIKit.framework; path = Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.0.sdk/System/Library/Frameworks/UIKit.framework; sourceTree = DEVELOPER_DIR; };
 		07F00EFF1F8A972D006FAC96 /* libVSAlert.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libVSAlert.a; sourceTree = BUILT_PRODUCTS_DIR; };
+		07F25AB61F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = VSAlertControllerAppearanceProxy.h; sourceTree = "<group>"; };
+		07F25AB71F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = VSAlertControllerAppearanceProxy.m; sourceTree = "<group>"; };
 		07FF9DF01F8FEE85002966A3 /* VSAlert-Example.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = "VSAlert-Example.app"; sourceTree = BUILT_PRODUCTS_DIR; };
 		07FF9E091F8FEEE3002966A3 /* AppDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
 		07FF9E0A1F8FEEE3002966A3 /* AppDelegate.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
@@ -134,6 +139,8 @@
 				0710F9C51F8B1E1000C6D084 /* VSAlertController.m */,
 				074538151F8C437700092DAF /* VSAlertControllerTransitionAnimator.h */,
 				074538161F8C437700092DAF /* VSAlertControllerTransitionAnimator.m */,
+				07F25AB61F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.h */,
+				07F25AB71F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.m */,
 			);
 			name = Src;
 			sourceTree = "<group>";
@@ -217,6 +224,7 @@
 				0710F9C71F8B1E2000C6D084 /* VSAlertAction.h in Headers */,
 				074538171F8C437700092DAF /* VSAlertControllerTransitionAnimator.h in Headers */,
 				0710F9C81F8B1E2200C6D084 /* VSAlertController.h in Headers */,
+				07F25AB81F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -351,6 +359,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				07F25AB91F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.m in Sources */,
 				0710F9C91F8B1E3500C6D084 /* VSAlertAction.m in Sources */,
 				074538191F8C437700092DAF /* VSAlertControllerTransitionAnimator.m in Sources */,
 				0710F9CA1F8B1E3700C6D084 /* VSAlertController.m in Sources */,
@@ -367,6 +376,7 @@
 				07FF9E4F1F8FF1D1002966A3 /* VSAlertControllerTransitionAnimator.m in Sources */,
 				07FF9E191F8FEF92002966A3 /* AlertExampleViewController.m in Sources */,
 				07FF9E1A1F8FEF98002966A3 /* main.m in Sources */,
+				07F25ABA1F8FFA98000B4784 /* VSAlertControllerAppearanceProxy.m in Sources */,
 				07FF9E181F8FEF8E002966A3 /* AlertExampleSettingsViewController.m in Sources */,
 				07FF9E1B1F8FEF9B002966A3 /* AppDelegate.m in Sources */,
 			);

VSAlert/VSAlertController.h

@@ -117,7 +117,7 @@ typedef NS_ENUM(NSInteger, VSAlertControllerAnimationStyle) {
 /**
  VSAlertController is a drop-in replacement for UIAlertController with more features. It is created using the +alertControllerWithTitle:description:image:style: class method, and configured using instances of VSAlertAction. You can add text fields by calling -addTextField: on an instance of VSAlertController. Instantiate the controller, add your actions and textfieds. and any other configuration you might need. Present the controller modally using UIViewController's -presentViewController:animated:completion: method. VSAlertController respects the animation paramater of this call, and you configure the animation in question by setting your instances animationStyle property before presentation. You can also change this property in the handler of an action to use a different animation on dismissal.
  */
-@interface VSAlertController : UIViewController
+@interface VSAlertController : UIViewController<UIAppearance>
 
 /**
  @name Creating Alerts
@@ -240,28 +240,4 @@ typedef NS_ENUM(NSInteger, VSAlertControllerAnimationStyle) {
  */
 @property (NS_NONATOMIC_IOSONLY, strong, readonly, nullable) UIImage *image;
 
-/**
- @name Customizing the Class Globally
- */
-
-/**
- Default title text color. Affects all instances instantiated after this change.
- */
-@property (NS_NONATOMIC_IOSONLY, class, strong, nullable) UIColor *defaultTitleTextColor;
-
-/**
- Default description text color. Affects all instances instantiated after this change.
- */
-@property (NS_NONATOMIC_IOSONLY, class, strong, nullable) UIColor *defaultMessageTextColor;
-
-/**
- Default title text font. Affects all instance instantiated after this change.
- */
-@property (NS_NONATOMIC_IOSONLY, class, strong, nullable) UIFont *defaultTitleTextFont;
-
-/**
- Default description text font. Affects all instances instantiated after this change.
- */
-@property (NS_NONATOMIC_IOSONLY, class, strong, nullable) UIFont *defaultMessageTextFont;
-
 @end

VSAlert/VSAlertController.m

@@ -9,6 +9,7 @@
 
 #import "VSAlertController.h"
 #import "VSAlertControllerTransitionAnimator.h"
+#import "VSAlertControllerAppearanceProxy.h"
 
 NSString * const VSAlertControllerNotImplementedException = @"VSAlertControllerNotImplementedException";
 NSString * const VSAlertControllerTextFieldInvalidException = @"VSAlertControllerTextFieldInvalidException";
@@ -55,12 +56,6 @@ @implementation VSAlertController {
 // Log
 static os_log_t alert_log;
 
-// Static class vars
-static UIColor *_defaultTitleTextColor;
-static UIColor *_defaultMessageTextColor;
-static UIFont *_defaultTitleTextFont;
-static UIFont *_defaultMessageTextFont;
-
 // Explicitly synthesize Ivars from header
 @synthesize alertTitleTextColor = _alertTitleTextColor;
 @synthesize alertMessageTextColor = _alertMessageTextColor;
@@ -118,56 +113,6 @@ + (instancetype)alertControllerWithTitle:(NSString *)title message:(NSString *)m
 
 }
 
-#pragma mark - Class Property Access Methods
-
-+ (UIColor *)defaultTitleTextColor {
-
-    return _defaultTitleTextColor;
-
-}
-
-+ (void)setDefaultTitleTextColor:(UIColor *)defaultTitleTextColor {
-
-    _defaultTitleTextColor = defaultTitleTextColor;
-
-}
-
-+ (UIColor *)defaultMessageTextColor {
-
-    return _defaultMessageTextColor;
-
-}
-
-+ (void)setDefaultMessageTextColor:(UIColor *)defaultMessageTextColor {
-
-    _defaultMessageTextColor = defaultMessageTextColor;
-
-}
-
-+ (UIFont *)defaultTitleTextFont {
-
-    return _defaultTitleTextFont;
-
-}
-
-+ (void)setDefaultTitleTextFont:(UIFont *)defaultTitleTextFont {
-
-    _defaultTitleTextFont = defaultTitleTextFont;
-
-}
-
-+ (UIFont *)defaultMessageTextFont {
-
-    return _defaultMessageTextFont;
-
-}
-
-+ (void)setDefaultMessageTextFont:(UIFont *)defaultMessageTextFont {
-
-    _defaultMessageTextFont = defaultMessageTextFont;
-
-}
-
 #pragma mark - Overridden Instance Methods
 
 - (instancetype)init {
@@ -344,6 +289,32 @@ - (CGFloat)alertStackViewHeight {
 
 }
 
+#pragma mark - UIAppearance
+
++ (instancetype)appearance {
+
+    return [VSAlertControllerAppearanceProxy appearance];
+
+}
+
++ (instancetype)appearanceForTraitCollection:(UITraitCollection *)trait {
+
+    return [VSAlertControllerAppearanceProxy appearanceForTraitCollection:trait];
+
+}
+
++ (instancetype)appearanceForTraitCollection:(UITraitCollection *)trait whenContainedInInstancesOfClasses:(NSArray<Class<UIAppearanceContainer>> *)containerTypes {
+
+    return [VSAlertControllerAppearanceProxy appearanceForTraitCollection:trait whenContainedInInstancesOfClasses:containerTypes];
+
+}
+
++ (instancetype)appearanceWhenContainedInInstancesOfClasses:(NSArray<Class<UIAppearanceContainer>> *)containerTypes {
+
+    return [VSAlertControllerAppearanceProxy appearanceWhenContainedInInstancesOfClasses:containerTypes];
+
+}
+
 #pragma mark - UIViewControllerTransitioningDelegate
 
 - (id<UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source {
@@ -464,11 +435,11 @@ - (void)_setUpAlertController {
     _presentAnimator = [[VSAlertControllerTransitionAnimator alloc] init];
     _dismissAnimator = [[VSAlertControllerTransitionAnimator alloc] init];
 
-    // Set instance properties without accessors (to respect UIAppearance) [Use class defaults for now, as this class doesn't actually work with UIAppearance]
-    _alertTitleTextColor = [self class].defaultTitleTextColor ? [self class].defaultTitleTextColor : [UIColor blackColor];
-    _alertTitleTextFont = [self class].defaultTitleTextFont ? [self class].defaultTitleTextFont : [UIFont systemFontOfSize:17.0f weight:UIFontWeightMedium];
-    _alertMessageTextColor = [self class].defaultMessageTextColor ? [self class].defaultMessageTextColor : [UIColor blackColor];
-    _alertMessageTextFont = [UIFont systemFontOfSize:15.0f weight:UIFontWeightRegular];
+//     Set up propertie without accessors for use with UIAppearance
+    _alertTitleTextColor = [VSAlertController appearance].alertTitleTextColor ? [VSAlertController appearance].alertTitleTextColor : [UIColor blackColor];
+    _alertTitleTextFont = [VSAlertController appearance].alertTitleTextFont ? [VSAlertController appearance].alertTitleTextFont : [UIFont systemFontOfSize:17.0f weight:UIFontWeightSemibold];
+    _alertMessageTextColor = [VSAlertController appearance].alertMessageTextColor ? [VSAlertController appearance].alertMessageTextColor : [UIColor blackColor];
+    _alertMessageTextFont = [VSAlertController appearance].alertMessageTextFont ? [VSAlertController appearance].alertMessageTextFont : [UIFont systemFontOfSize:15.0f weight:UIFontWeightRegular];
 
     // Set instance read-only properties
     _style = VSAlertControllerStyleAlert;

VSAlert/VSAlertControllerAppearanceProxy.h

@@ -0,0 +1,35 @@
+//
+//  VSAlertControllerAppearanceProxy.h
+//  VSAlert
+//
+//  Created by Varun Santhanam on 10/12/17.
+//
+
+#import <UIKit/UIKit.h>
+
+/**
+ VSAlertControllerAppearanceProxy is a class used to support the UIAppearance protocol in VSAlertController, because VSAlertController does not inherit from an object that includes this support. This classes interface is described in a project header, and thus does not appear in the library documentation.
+ */
+@interface VSAlertControllerAppearanceProxy : UIView<UIAppearance>
+
+/**
+ The color of the alert's title
+ */
+@property (NS_NONATOMIC_IOSONLY, strong, nonnull) UIColor *alertTitleTextColor UI_APPEARANCE_SELECTOR;
+
+/**
+ The color of the alert's message
+ */
+@property (NS_NONATOMIC_IOSONLY, strong, nonnull) UIColor *alertMessageTextColor UI_APPEARANCE_SELECTOR;
+
+/**
+ The font of the alert's title
+ */
+@property (NS_NONATOMIC_IOSONLY, strong, nonnull) UIFont *alertTitleTextFont UI_APPEARANCE_SELECTOR;
+
+/**
+ The font of the aler's message
+ */
+@property (NS_NONATOMIC_IOSONLY, strong, nonnull) UIFont *alertMessageTextFont UI_APPEARANCE_SELECTOR;
+
+@end

VSAlert/VSAlertControllerAppearanceProxy.m

@@ -0,0 +1,17 @@
+//
+//  VSAlertControllerAppearanceProxy.m
+//  VSAlert
+//
+//  Created by Varun Santhanam on 10/12/17.
+//
+
+#import "VSAlertControllerAppearanceProxy.h"
+
+@implementation VSAlertControllerAppearanceProxy
+
+@synthesize alertTitleTextColor = _alertTitleTextColor;
+@synthesize alertTitleTextFont = _alertTitleTextFont;
+@synthesize alertMessageTextColor = _alertMessageTextColor;
+@synthesize alertMessageTextFont = _alertMessageTextFont;
+
+@end

VSAlert/VSAlertControllerTransitionAnimator.h

@@ -8,12 +8,27 @@
 @import UIKit;
 
 #import "VSAlertController.h"
-
+/**
+ Exception thrown when a transition that has yet to be implemented is triggered at runtime.
+ */
 extern NSString * _Nonnull const VSAlertControllerTransitionAnimatorNotImplementedException;
+
+/**
+ An exception thrown when a transition that doesn't work for a given controller is triggered at runttime
+ */
 extern NSString * _Nonnull const VSAlertControllerTransitionAnimatorInvalidUsageException;
 
+/**
+ VSAlertControllerTransitionAnimator is a class used to manage modal transitions to and from VSAlertController objects. The class's interface is described in a project header, and thus does not appear in the library's documentation/
+ */
 @interface VSAlertControllerTransitionAnimator : NSObject<UIViewControllerAnimatedTransitioning>
 
+/**
+ Create a transition animator
+
+ @param actionStyle The style of the action that trigged the animation, during dismissal transitions
+ @return The instantiated animator object.
+ */
 - (nullable instancetype)initWithActionStyle:(VSAlertActionStyle)actionStyle NS_DESIGNATED_INITIALIZER;
 
 @end