check for styleClass change before propagating

Pixate · Jun 2, 2014 · caa08ea · caa08ea
1 parent c08aa14
commit caa08ea
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/Core/Styling/Categories/UIView+PXStyling.m b/src/Core/Styling/Categories/UIView+PXStyling.m
@@ -400,6 +400,13 @@ - (void)setStyleClass:(NSString *)aClass
     }];
 
 	aClass = [classes componentsJoinedByString:@" "];
+
+	NSString *previousClass = objc_getAssociatedObject(self, &STYLE_CLASS_KEY);
+	if((!aClass && !previousClass) || [aClass isEqualToString:previousClass]){
+		// no change
+		return;
+	}
+
 	objc_setAssociatedObject(self, &STYLE_CLASS_KEY, aClass, OBJC_ASSOCIATION_COPY_NONATOMIC);
 
     objc_setAssociatedObject(self, &STYLE_CLASSES_KEY, classes, OBJC_ASSOCIATION_RETAIN_NONATOMIC);