[ASRangeController] Inspect delegate's ASInterfaceState to delay preloading beyond viewport until visible.

AsyncDisplayKit/ASTableNode.m

@@ -9,6 +9,7 @@
 #import "ASFlowLayoutController.h"
 #import "ASTableViewInternal.h"
 #import "ASDisplayNode+Subclasses.h"
+#import "ASRangeController.h"
 
 @interface _ASTablePendingState : NSObject
 @property (weak, nonatomic) id <ASTableDelegate>   delegate;
@@ -63,11 +64,12 @@
 {
   [super didLoad];
   
+  ASTableView *view = self.view;
+  view.tableNode    = self;
+  
   if (_pendingState) {
     _ASTablePendingState *pendingState = _pendingState;
-    self.pendingState = nil;
-    
-    ASTableView *view    = self.view;
+    self.pendingState    = nil;
     view.asyncDelegate   = pendingState.delegate;
     view.asyncDataSource = pendingState.dataSource;
   }
@@ -125,6 +127,14 @@
   return (ASTableView *)[super view];
 }
 
+#if RangeControllerLoggingEnabled
+- (void)visibilityDidChange:(BOOL)isVisible
+{
+  [super visibilityDidChange:isVisible];
+  NSLog(@"%@ - visible: %d", self, isVisible);
+}
+#endif
+
 - (void)clearContents
 {
   [super clearContents];