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| -rw-r--r-- | StackSet.hs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/StackSet.hs b/StackSet.hs index 3604f3b..8103075 100644 --- a/StackSet.hs +++ b/StackSet.hs @@ -162,5 +162,12 @@ delete k w = maybe w tweak (M.lookup k (cache w)) , stacks = M.adjust (L.delete k) i (stacks w) , focus = M.update (\k' -> if k == k' then elemAfter k (stacks w M.! i) else Just k') i (focus w) } +-- | /O(log n)/. If the given window is contained in a workspace, make it the +-- focused window of that workspace. +raiseFocus :: Ord a => a -> StackSet a -> StackSet a +raiseFocus k w = case M.lookup k (cache w) of + Nothing -> w + Just i -> w { focus = M.insert i k (focus w) } + elemAfter :: Eq a => a -> [a] -> Maybe a elemAfter w ws = listToMaybe . filter (/= w) . dropWhile (/= w) $ ws ++ ws |