Add a search predicate option to XMonad.Prompt

Ignore-this: 8e8804eeb9650d38bc225e15887310da

darcs-hash:20091221025408-88b46-c700aa5d2fdcad96495c23e53f51496be36cbc7c.gz

1 files changed, 7 insertions, 2 deletions

diff --git a/XMonad/Prompt.hs b/XMonad/Prompt.hs
index a8646e1..087da9f 100644
--- a/XMonad/Prompt.hs
+++ b/XMonad/Prompt.hs
@@ -138,7 +138,10 @@ data XPConfig =
         , defaultText       :: String     -- ^ The text by default in the prompt line
         , autoComplete      :: Maybe Int  -- ^ Just x: if only one completion remains, auto-select it,
         , showCompletionOnTab :: Bool     -- ^ Only show list of completions when Tab was pressed
-                                         --   and delay by x microseconds
+                                          --   and delay by x microseconds
+        , searchPredicate   :: String -> String -> Bool
+                                          -- ^ Given the typed string and a possible
+                                          --   completion, is the completion valid?
         }
 
 data XPType = forall p . XPrompt p => XPT p
@@ -212,7 +215,9 @@ defaultXPConfig =
         , historyFilter     = id
         , defaultText       = []
         , autoComplete      = Nothing
-        , showCompletionOnTab = False }
+        , showCompletionOnTab = False
+        , searchPredicate   = isPrefixOf
+        }
 greenXPConfig = defaultXPConfig { fgColor = "green", bgColor = "black" }
 amberXPConfig = defaultXPConfig { fgColor = "#ca8f2d", bgColor = "black", fgHLight = "#eaaf4c" }