Merge pull request #1837 from BlairDuncan/keyViewLoopInfinateLoopFix

Fixed: views from other windows cannot be next/previous key views

Previously, a view from another window could be set as the next/previous key view, which would result in unexpected behavior, including an infinite loop.

This commit ensures the proposed next/previous view belongs to the same window as the view to which it will be chained.

AppKit/CPView.j

@@ -2557,7 +2557,7 @@ setBoundsOrigin:
 
 - (void)_setPreviousKeyView:(CPView)previous
 {
-    if ([previous isEqual:self])
+    if ([previous isEqual:self] || ![[previous window] isEqual:[self window]])
         _previousKeyView = nil;
     else
         _previousKeyView = previous;
@@ -2565,7 +2565,7 @@ setBoundsOrigin:
 
 - (void)setNextKeyView:(CPView)next
 {
-    if ([next isEqual:self])
+    if ([next isEqual:self] || ![[next window] isEqual:[self window]])
         _nextKeyView = nil;
     else
     {