Added convience method to count number of side controllers.

ViewDeck/IIViewDeckController.m

@@ -180,6 +180,7 @@ @interface IIViewDeckController () <UIGestureRecognizerDelegate>
 @property (nonatomic, readonly) UIView* slidingControllerView;
 
 - (void)cleanup;
+- (uint)sideControllerCount;
 
 - (CGRect)slidingRectForOffset:(CGFloat)offset forOrientation:(IIViewDeckOffsetOrientation)orientation;
 - (CGSize)slidingSizeForOffset:(CGFloat)offset forOrientation:(IIViewDeckOffsetOrientation)orientation;
@@ -446,6 +447,10 @@ - (void)didReceiveMemoryWarning
 
 #pragma mark - Bookkeeping
 
+- (uint)sideControllerCount {
+    return (self.leftController ? 1 : 0) + (self.rightController ? 1 : 0) + (self.topController ? 1 : 0) + (self.bottomController ? 1 : 0);
+}
+
 - (NSArray*)controllers {
     NSMutableArray *result = [NSMutableArray array];
     if (self.centerController) [result addObject:self.centerController];
@@ -734,9 +739,7 @@ - (void)setMaxSize:(CGFloat)maxSize {
 }
 
 - (void)setMaxSize:(CGFloat)maxSize completion:(void(^)(BOOL finished))completion {
-    int count = (self.leftController ? 1 : 0) + (self.rightController ? 1 : 0) + (self.topController ? 1 : 0) + (self.bottomController ? 1 : 0);
-
-    if (count > 1) {
+    if ([self sideControllerCount] > 1) {
         NSLog(@"IIViewDeckController: warning: setting maxLedge with more than one side controllers. Value will be ignored.");
         return;
     }