Return NSNotFound when asked for the index of a grid cell at a point outside the bounds of the grid.

Jim Dovey · Jim Dovey · commit dbf20841b786 · 2010-05-11T09:39:26.000-04:00
diff --git a/Classes/AQGridViewData.m b/Classes/AQGridViewData.m
@@ -96,7 +96,11 @@ - (NSUInteger) itemIndexForPoint: (CGPoint) point
 	NSUInteger x = (NSUInteger)floorf(point.x);
 	NSUInteger col = x / (NSUInteger)_actualCellSize.width;
 	
-	return ( (row * [self numberOfItemsPerRow]) + col );
+	NSUInteger result = (row * [self numberOfItemsPerRow]) + col;
+	if ( result >= self.numberOfItems )
+		return ( NSNotFound );
+	
+	return ( result );
 }
 
 - (CGRect) cellRectForPoint: (CGPoint) point
