Ability to change overlay background color via UIAppearance

Author: shkutkov

WYPopoverController/WYPopoverController.h

@@ -75,6 +75,8 @@ typedef NS_OPTIONS(NSUInteger, WYPopoverArrowDirection) {
 
 @property (nonatomic, assign) UIEdgeInsets viewContentInsets    UI_APPEARANCE_SELECTOR;
 
+@property (nonatomic, strong) UIColor *overlayColor             UI_APPEARANCE_SELECTOR;
+
 @end
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////////

WYPopoverController/WYPopoverController.m

@@ -561,6 +561,7 @@ + (void)load
             appearance.innerShadowOffset = CGSizeMake(0, 1);
             appearance.innerCornerRadius = 6;
             appearance.viewContentInsets = UIEdgeInsetsMake(3, 0, 0, 0);
+            appearance.overlayColor = [UIColor clearColor];
         }
         else
         {
@@ -591,6 +592,7 @@ + (void)load
             appearance.innerShadowOffset = CGSizeZero;
             appearance.innerCornerRadius = 0;
             appearance.viewContentInsets = UIEdgeInsetsZero;
+            appearance.overlayColor = [UIColor colorWithWhite:0 alpha:0.15];
         }
     }
 }
@@ -1242,7 +1244,6 @@ @interface WYPopoverController () <WYPopoverOverlayViewDelegate>
 }
 
 @property (nonatomic, strong, readonly) UIView  *rootView;
-@property (nonatomic, strong, readonly) UIColor *overlayColor;
 @property (nonatomic, assign, readonly) CGSize   contentSizeForViewInPopover;
 
 - (void)dismissPopoverAnimated:(BOOL)animated callDelegate:(BOOL)callDelegate;
@@ -1310,12 +1311,6 @@ - (UIView *)rootView
     return result;
 }
 
-- (UIColor *)overlayColor
-{
-    UIColor* result = (WY_IS_IOS_LESS_THAN(@"7.0")) ? [UIColor clearColor] : [UIColor colorWithWhite:0 alpha:0.15];
-    return result;
-}
-
 - (CGSize)popoverContentSize
 {
     CGSize result = CGSizeZero;
@@ -1399,11 +1394,11 @@ - (void)presentPopoverFromRect:(CGRect)aRect inView:(UIView *)aView permittedArr
         overlayView.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
         overlayView.autoresizesSubviews = NO;
         overlayView.userInteractionEnabled = YES;
-        overlayView.backgroundColor = self.overlayColor;
         overlayView.delegate = self;
         overlayView.passthroughViews = passthroughViews;
 
         containerView = [[WYPopoverBackgroundView alloc] initWithContentSize:contentViewSize];
+
         [overlayView addSubview:containerView];
 
         containerView.hidden = YES;
@@ -1443,6 +1438,10 @@ - (void)presentPopoverFromRect:(CGRect)aRect inView:(UIView *)aView permittedArr
         containerView.innerShadowOffset = appearance.innerShadowOffset;
         containerView.innerCornerRadius = appearance.innerCornerRadius;
         containerView.viewContentInsets = appearance.viewContentInsets;
+
+        overlayView.backgroundColor = appearance.overlayColor;
+    } else {
+        overlayView.backgroundColor = containerView.overlayColor;
     }
 
     [self positionPopover];