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<title>XMonad/Actions/WorkspaceCursors.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE DeriveDataTypeable, FlexibleInstances, MultiParamTypeClasses #-}</span>
<a name="line-2"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-3"></a><span class='hs-comment'>-- |</span>
<a name="line-4"></a><span class='hs-comment'>-- Module : XMonad.Actions.WorkspaceCursors</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) 2009 Adam Vogt <vogt.adam@gmail.com></span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : Adam Vogt</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : unportable</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- Like "XMonad.Actions.Plane" for an arbitrary number of dimensions.</span>
<a name="line-13"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Actions</span><span class='hs-varop'>.</span><span class='hs-conid'>WorkspaceCursors</span>
<a name="line-16"></a> <span class='hs-layout'>(</span>
<a name="line-17"></a> <span class='hs-comment'>-- * Usage</span>
<a name="line-18"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-19"></a>
<a name="line-20"></a> <span class='hs-varid'>focusDepth</span>
<a name="line-21"></a> <span class='hs-layout'>,</span><span class='hs-varid'>makeCursors</span>
<a name="line-22"></a> <span class='hs-layout'>,</span><span class='hs-varid'>toList</span>
<a name="line-23"></a> <span class='hs-layout'>,</span><span class='hs-varid'>workspaceCursors</span>
<a name="line-24"></a>
<a name="line-25"></a> <span class='hs-layout'>,</span><span class='hs-conid'>WorkspaceCursors</span>
<a name="line-26"></a> <span class='hs-layout'>,</span><span class='hs-varid'>getFocus</span>
<a name="line-27"></a>
<a name="line-28"></a> <span class='hs-comment'>-- * Modifying the focus</span>
<a name="line-29"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modifyLayer</span>
<a name="line-30"></a> <span class='hs-layout'>,</span><span class='hs-varid'>modifyLayer'</span>
<a name="line-31"></a> <span class='hs-layout'>,</span><span class='hs-varid'>shiftModifyLayer</span><span class='hs-layout'>,</span><span class='hs-varid'>shiftLayer</span>
<a name="line-32"></a>
<a name="line-33"></a> <span class='hs-comment'>-- * Functions to pass to 'modifyLayer'</span>
<a name="line-34"></a> <span class='hs-layout'>,</span><span class='hs-varid'>focusNth'</span>
<a name="line-35"></a> <span class='hs-layout'>,</span><span class='hs-varid'>noWrapUp</span><span class='hs-layout'>,</span><span class='hs-varid'>noWrapDown</span>
<a name="line-36"></a>
<a name="line-37"></a> <span class='hs-comment'>-- * Todo</span>
<a name="line-38"></a> <span class='hs-comment'>-- $todo</span>
<a name="line-39"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-40"></a>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>StackSet</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>W</span>
<a name="line-42"></a>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Actions</span><span class='hs-varop'>.</span><span class='hs-conid'>FocusNth</span><span class='hs-layout'>(</span><span class='hs-varid'>focusNth'</span><span class='hs-layout'>)</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Layout</span><span class='hs-varop'>.</span><span class='hs-conid'>LayoutModifier</span><span class='hs-layout'>(</span><span class='hs-conid'>ModifiedLayout</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-45"></a> <span class='hs-conid'>LayoutModifier</span><span class='hs-layout'>(</span><span class='hs-varid'>handleMess</span><span class='hs-layout'>,</span> <span class='hs-varid'>redoLayout</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-46"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-layout'>(</span><span class='hs-conid'>Typeable</span><span class='hs-layout'>,</span> <span class='hs-conid'>Message</span><span class='hs-layout'>,</span> <span class='hs-conid'>WorkspaceId</span><span class='hs-layout'>,</span> <span class='hs-conid'>X</span><span class='hs-layout'>,</span> <span class='hs-conid'>XState</span><span class='hs-layout'>(</span><span class='hs-varid'>windowset</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-47"></a> <span class='hs-varid'>fromMessage</span><span class='hs-layout'>,</span> <span class='hs-varid'>sendMessage</span><span class='hs-layout'>,</span> <span class='hs-varid'>windows</span><span class='hs-layout'>,</span> <span class='hs-varid'>gets</span><span class='hs-layout'>)</span>
<a name="line-48"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'><=<</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>guard</span><span class='hs-layout'>,</span> <span class='hs-varid'>liftM</span><span class='hs-layout'>,</span> <span class='hs-varid'>liftM2</span><span class='hs-layout'>,</span> <span class='hs-varid'>when</span><span class='hs-layout'>)</span>
<a name="line-49"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'><$></span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-50"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span><span class='hs-layout'>(</span><span class='hs-conid'>Foldable</span><span class='hs-layout'>(</span><span class='hs-varid'>foldMap</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>toList</span><span class='hs-layout'>)</span>
<a name="line-51"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span><span class='hs-layout'>(</span><span class='hs-varid'>fromJust</span><span class='hs-layout'>,</span> <span class='hs-varid'>listToMaybe</span><span class='hs-layout'>)</span>
<a name="line-52"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span><span class='hs-layout'>(</span><span class='hs-conid'>Monoid</span><span class='hs-layout'>(</span><span class='hs-varid'>mappend</span><span class='hs-layout'>,</span> <span class='hs-varid'>mconcat</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span><span class='hs-layout'>(</span><span class='hs-varid'>sequenceA</span><span class='hs-layout'>)</span>
<a name="line-54"></a>
<a name="line-55"></a><span class='hs-comment'>-- $usage</span>
<a name="line-56"></a><span class='hs-comment'>--</span>
<a name="line-57"></a><span class='hs-comment'>-- Here is an example config:</span>
<a name="line-58"></a><span class='hs-comment'>--</span>
<a name="line-59"></a><span class='hs-comment'>-- > import XMonad</span>
<a name="line-60"></a><span class='hs-comment'>-- > import XMonad.Actions.WorkspaceCursors</span>
<a name="line-61"></a><span class='hs-comment'>-- > import XMonad.Hooks.DynamicLog</span>
<a name="line-62"></a><span class='hs-comment'>-- > import XMonad.Util.EZConfig</span>
<a name="line-63"></a><span class='hs-comment'>-- > import qualified XMonad.StackSet as W</span>
<a name="line-64"></a><span class='hs-comment'>-- ></span>
<a name="line-65"></a><span class='hs-comment'>-- > main = do</span>
<a name="line-66"></a><span class='hs-comment'>-- > x <- xmobar conf</span>
<a name="line-67"></a><span class='hs-comment'>-- > xmonad x</span>
<a name="line-68"></a><span class='hs-comment'>-- ></span>
<a name="line-69"></a><span class='hs-comment'>-- > conf = additionalKeysP defaultConfig</span>
<a name="line-70"></a><span class='hs-comment'>-- > { layoutHook = workspaceCursors myCursors $ layoutHook defaultConfig</span>
<a name="line-71"></a><span class='hs-comment'>-- > , workspaces = toList myCursors } $</span>
<a name="line-72"></a><span class='hs-comment'>-- > [("M-"++shift++control++[k], f direction depth)</span>
<a name="line-73"></a><span class='hs-comment'>-- > | (f,shift) <- zip [modifyLayer,shiftModifyLayer] ["","S-"]</span>
<a name="line-74"></a><span class='hs-comment'>-- > , (direction,control) <- zip [W.focusUp',W.focusDown'] ["C-",""]</span>
<a name="line-75"></a><span class='hs-comment'>-- > , (depth,k) <- zip (reverse [1..focusDepth myCursors]) "asdf"]</span>
<a name="line-76"></a><span class='hs-comment'>-- > ++ moreKeybindings</span>
<a name="line-77"></a><span class='hs-comment'>-- ></span>
<a name="line-78"></a><span class='hs-comment'>-- > moreKeybindings = []</span>
<a name="line-79"></a><span class='hs-comment'>-- ></span>
<a name="line-80"></a><span class='hs-comment'>-- > myCursors = makeCursors $ map (map (\x -> [x])) [ "1234", "abc", "xyz"]</span>
<a name="line-81"></a><span class='hs-comment'>-- > -- myCursors = makeCursors [["wsA","wsB","wsC"],["-alpha-","-beta-","-gamma-"],["x","y"]]</span>
<a name="line-82"></a>
<a name="line-83"></a>
<a name="line-84"></a><span class='hs-comment'>-- $todo</span>
<a name="line-85"></a><span class='hs-comment'>--</span>
<a name="line-86"></a><span class='hs-comment'>-- * Find and document how to raise the allowable length of arguments:</span>
<a name="line-87"></a><span class='hs-comment'>-- restoring xmonad's state results in: @xmonad: executeFile: resource</span>
<a name="line-88"></a><span class='hs-comment'>-- exhausted (Argument list too long)@ when you specify more than about 50</span>
<a name="line-89"></a><span class='hs-comment'>-- workspaces. Or change it such that workspaces are created when you try to</span>
<a name="line-90"></a><span class='hs-comment'>-- view it.</span>
<a name="line-91"></a><span class='hs-comment'>--</span>
<a name="line-92"></a><span class='hs-comment'>-- * Function for pretty printing for DynamicLog that groups workspaces by</span>
<a name="line-93"></a><span class='hs-comment'>-- common prefixes</span>
<a name="line-94"></a><span class='hs-comment'>--</span>
<a name="line-95"></a><span class='hs-comment'>-- * Examples of adding workspaces to the cursors, having them appear multiple</span>
<a name="line-96"></a><span class='hs-comment'>-- times for being able to show jumping to some n'th multiple workspace</span>
<a name="line-97"></a>
<a name="line-98"></a><a name="makeCursors"></a><span class='hs-comment'>-- | makeCursors requires a nonempty string, and each sublist must be nonempty</span>
<a name="line-99"></a><span class='hs-definition'>makeCursors</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span>
<a name="line-100"></a><span class='hs-definition'>makeCursors</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"Workspace Cursors cannot be empty"</span>
<a name="line-101"></a><span class='hs-definition'>makeCursors</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'><$></span> <span class='hs-varid'>foldl</span> <span class='hs-varid'>addDim</span> <span class='hs-varid'>x</span> <span class='hs-varid'>xs</span>
<a name="line-102"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>end</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>head</span> <span class='hs-varid'>a</span>
<a name="line-103"></a> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>return</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>tail</span> <span class='hs-varid'>a</span>
<a name="line-104"></a> <span class='hs-comment'>-- this could probably be simplified, but this true:</span>
<a name="line-105"></a> <span class='hs-comment'>-- toList . makeCursors == map (concat . reverse) . sequence . reverse . map (map (:[]))</span>
<a name="line-106"></a> <span class='hs-comment'>-- the strange order is used because it makes the regular M-1..9</span>
<a name="line-107"></a> <span class='hs-comment'>-- bindings change the prefixes first</span>
<a name="line-108"></a>
<a name="line-109"></a><a name="addDim"></a><span class='hs-definition'>addDim</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monoid</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Cursors</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Cursors</span> <span class='hs-varid'>a</span>
<a name="line-110"></a><span class='hs-definition'>addDim</span> <span class='hs-varid'>prev</span> <span class='hs-varid'>prefixes</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Cons</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromJust</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>differentiate</span>
<a name="line-111"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'><$></span> <span class='hs-varid'>prev</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>mappend</span><span class='hs-layout'>)</span> <span class='hs-varid'>prefixes</span>
<a name="line-112"></a>
<a name="line-113"></a><a name="end"></a><span class='hs-definition'>end</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Cursors</span> <span class='hs-varid'>a</span>
<a name="line-114"></a><span class='hs-definition'>end</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Cons</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromJust</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>differentiate</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-conid'>End</span>
<a name="line-115"></a>
<a name="line-116"></a><a name="Cursors"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Cursors</span> <span class='hs-varid'>a</span>
<a name="line-117"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Cons</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-118"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>End</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span><span class='hs-conid'>Read</span><span class='hs-layout'>,</span><span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-119"></a>
<a name="line-120"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Foldable</span> <span class='hs-conid'>Cursors</span> <span class='hs-keyword'>where</span>
<a name="line-121"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>End</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span>
<a name="line-122"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cons</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>mconcat</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>y</span> <span class='hs-varop'>++</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span>
<a name="line-123"></a>
<a name="line-124"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Functor</span> <span class='hs-conid'>Cursors</span> <span class='hs-keyword'>where</span>
<a name="line-125"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>End</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>End</span> <span class='hs-varop'>$</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-126"></a> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cons</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Cons</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>z</span><span class='hs-layout'>)</span>
<a name="line-127"></a>
<a name="line-128"></a><a name="changeFocus"></a><span class='hs-definition'>changeFocus</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Cursors</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Cursors</span> <span class='hs-varid'>t</span><span class='hs-keyglyph'>]</span>
<a name="line-129"></a><span class='hs-definition'>changeFocus</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cons</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-130"></a> <span class='hs-varid'>choose</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>chFocus</span> <span class='hs-varid'>p</span> <span class='hs-varid'>x</span>
<a name="line-131"></a> <span class='hs-varid'>foc</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>changeFocus</span> <span class='hs-varid'>p</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focus</span> <span class='hs-varid'>choose</span>
<a name="line-132"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-conid'>Cons</span> <span class='hs-varop'>$</span> <span class='hs-varid'>choose</span> <span class='hs-layout'>{</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focus</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foc</span> <span class='hs-layout'>}</span>
<a name="line-133"></a><span class='hs-definition'>changeFocus</span> <span class='hs-varid'>p</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>guard</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-134"></a>
<a name="line-135"></a><a name="chFocus"></a><span class='hs-definition'>chFocus</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-136"></a><span class='hs-definition'>chFocus</span> <span class='hs-varid'>p</span> <span class='hs-varid'>st</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focus</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>zipWith</span> <span class='hs-varid'>const</span> <span class='hs-layout'>(</span><span class='hs-varid'>iterate</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focusDown'</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>integrate</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span>
<a name="line-137"></a>
<a name="line-138"></a><a name="getFocus"></a><span class='hs-definition'>getFocus</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Cursors</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span>
<a name="line-139"></a><span class='hs-definition'>getFocus</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cons</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getFocus</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focus</span> <span class='hs-varid'>x</span>
<a name="line-140"></a><span class='hs-definition'>getFocus</span> <span class='hs-layout'>(</span><span class='hs-conid'>End</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-141"></a>
<a name="line-142"></a><a name="focusTo"></a><span class='hs-comment'>-- This could be made more efficient, if the fact that the suffixes are grouped</span>
<a name="line-143"></a><span class='hs-definition'>focusTo</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Cursors</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-144"></a><span class='hs-definition'>focusTo</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>listToMaybe</span> <span class='hs-varop'>.</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>getFocus</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>changeFocus</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-conid'>True</span><span class='hs-layout'>)</span>
<a name="line-145"></a>
<a name="line-146"></a><a name="noWrapUp"></a><span class='hs-comment'>-- | non-wrapping version of 'W.focusUp''</span>
<a name="line-147"></a><span class='hs-definition'>noWrapUp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>t</span>
<a name="line-148"></a><span class='hs-definition'>noWrapUp</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>t</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span><span class='hs-conop'>:</span><span class='hs-varid'>ls</span><span class='hs-layout'>)</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>l</span> <span class='hs-varid'>ls</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span><span class='hs-conop'>:</span><span class='hs-varid'>rs</span><span class='hs-layout'>)</span>
<a name="line-149"></a><span class='hs-definition'>noWrapUp</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-150"></a>
<a name="line-151"></a><a name="noWrapDown"></a><span class='hs-comment'>-- | non-wrapping version of 'W.focusDown''</span>
<a name="line-152"></a><span class='hs-definition'>noWrapDown</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>t</span>
<a name="line-153"></a><span class='hs-definition'>noWrapDown</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverseStack</span> <span class='hs-varop'>.</span> <span class='hs-varid'>noWrapUp</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverseStack</span>
<a name="line-154"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>reverseStack</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>t</span> <span class='hs-varid'>ls</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>t</span> <span class='hs-varid'>rs</span> <span class='hs-varid'>ls</span>
<a name="line-155"></a>
<a name="line-156"></a><a name="focusDepth"></a><span class='hs-definition'>focusDepth</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Cursors</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span>
<a name="line-157"></a><span class='hs-definition'>focusDepth</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cons</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span> <span class='hs-varop'>+</span> <span class='hs-varid'>focusDepth</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focus</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span>
<a name="line-158"></a><span class='hs-definition'>focusDepth</span> <span class='hs-layout'>(</span><span class='hs-conid'>End</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-159"></a>
<a name="line-160"></a><a name="descend"></a><span class='hs-definition'>descend</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span><span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>Cursors</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-161"></a><span class='hs-definition'>descend</span> <span class='hs-varid'>f</span> <span class='hs-num'>1</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cons</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Cons</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span>
<a name="line-162"></a><span class='hs-definition'>descend</span> <span class='hs-varid'>f</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cons</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>></span> <span class='hs-num'>1</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM</span> <span class='hs-conid'>Cons</span> <span class='hs-varop'>$</span> <span class='hs-varid'>descend</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>pred</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varop'>`onFocus`</span> <span class='hs-varid'>x</span>
<a name="line-163"></a><span class='hs-definition'>descend</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span>
<a name="line-164"></a>
<a name="line-165"></a><a name="onFocus"></a><span class='hs-definition'>onFocus</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-varid'>a1</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>a1</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>a1</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>a1</span><span class='hs-layout'>)</span>
<a name="line-166"></a><span class='hs-definition'>onFocus</span> <span class='hs-varid'>f</span> <span class='hs-varid'>st</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>st</span> <span class='hs-layout'>{</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focus</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focus</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span>
<a name="line-167"></a>
<a name="line-168"></a><a name="modifyLayer"></a><span class='hs-comment'>-- | @modifyLayer@ is used to change the focus at a given depth</span>
<a name="line-169"></a><span class='hs-definition'>modifyLayer</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-170"></a><span class='hs-definition'>modifyLayer</span> <span class='hs-varid'>f</span> <span class='hs-varid'>depth</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modifyCursors</span> <span class='hs-layout'>(</span><span class='hs-varid'>descend</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varid'>depth</span><span class='hs-layout'>)</span>
<a name="line-171"></a>
<a name="line-172"></a><a name="shiftModifyLayer"></a><span class='hs-comment'>-- | @shiftModifyLayer@ is the same as 'modifyLayer', but also shifts the</span>
<a name="line-173"></a><span class='hs-comment'>-- currently focused window to the new workspace</span>
<a name="line-174"></a><span class='hs-definition'>shiftModifyLayer</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>WorkspaceId</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-175"></a><span class='hs-definition'>shiftModifyLayer</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modifyLayer'</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-176"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>st'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-varid'>st</span>
<a name="line-177"></a> <span class='hs-varid'>windows</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>shift</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getFocus</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cons</span> <span class='hs-varid'>st'</span><span class='hs-layout'>)</span>
<a name="line-178"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>st'</span>
<a name="line-179"></a>
<a name="line-180"></a><a name="shiftLayer"></a><span class='hs-comment'>-- | @shiftLayer@ is the same as 'shiftModifyLayer', but the focus remains on</span>
<a name="line-181"></a><span class='hs-comment'>-- the current workspace.</span>
<a name="line-182"></a><span class='hs-definition'>shiftLayer</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>WorkspaceId</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-183"></a><span class='hs-definition'>shiftLayer</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modifyLayer'</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>st</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-184"></a> <span class='hs-varid'>windows</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>shift</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getFocus</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Cons</span> <span class='hs-varop'>$</span> <span class='hs-varid'>f</span> <span class='hs-varid'>st</span>
<a name="line-185"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>st</span>
<a name="line-186"></a>
<a name="line-187"></a><a name="modifyLayer'"></a><span class='hs-comment'>-- | example usages are 'shiftLayer' and 'shiftModifyLayer'</span>
<a name="line-188"></a><span class='hs-definition'>modifyLayer'</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-189"></a><span class='hs-definition'>modifyLayer'</span> <span class='hs-varid'>f</span> <span class='hs-varid'>depth</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>modifyCursors</span> <span class='hs-layout'>(</span><span class='hs-varid'>descend</span> <span class='hs-varid'>f</span> <span class='hs-varid'>depth</span><span class='hs-layout'>)</span>
<a name="line-190"></a>
<a name="line-191"></a><a name="modifyCursors"></a><span class='hs-definition'>modifyCursors</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-192"></a><span class='hs-definition'>modifyCursors</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sendMessage</span> <span class='hs-varop'>.</span> <span class='hs-conid'>ChangeCursors</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varid'>liftM2</span> <span class='hs-layout'>(</span><span class='hs-varop'>>></span><span class='hs-layout'>)</span> <span class='hs-varid'>updateXMD</span> <span class='hs-varid'>return</span> <span class='hs-varop'><=<</span><span class='hs-layout'>)</span>
<a name="line-193"></a>
<a name="line-194"></a><a name="WorkspaceCursors"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>WorkspaceCursors</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>WorkspaceCursors</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-195"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Typeable</span><span class='hs-layout'>,</span><span class='hs-conid'>Read</span><span class='hs-layout'>,</span><span class='hs-conid'>Show</span><span class='hs-layout'>)</span>
<a name="line-196"></a>
<a name="line-197"></a><a name="workspaceCursors"></a><span class='hs-comment'>-- | The state is stored in the 'WorkspaceCursors' layout modifier. Put this as</span>
<a name="line-198"></a><span class='hs-comment'>-- your outermost modifier, unless you want different cursors at different</span>
<a name="line-199"></a><span class='hs-comment'>-- times (using "XMonad.Layout.MultiToggle")</span>
<a name="line-200"></a><span class='hs-definition'>workspaceCursors</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-conid'>WorkspaceCursors</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span>
<a name="line-201"></a><span class='hs-definition'>workspaceCursors</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-varop'>.</span> <span class='hs-conid'>WorkspaceCursors</span>
<a name="line-202"></a>
<a name="line-203"></a><a name="ChangeCursors"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ChangeCursors</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ChangeCursors</span> <span class='hs-layout'>{</span> <span class='hs-varid'>unWrap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-conid'>Cursors</span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-204"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-205"></a>
<a name="line-206"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Message</span> <span class='hs-conid'>ChangeCursors</span>
<a name="line-207"></a>
<a name="line-208"></a><a name="updateXMD"></a><span class='hs-definition'>updateXMD</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Cursors</span> <span class='hs-conid'>WorkspaceId</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-209"></a><span class='hs-definition'>updateXMD</span> <span class='hs-varid'>cs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-210"></a> <span class='hs-varid'>changed</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>getFocus</span> <span class='hs-varid'>cs</span> <span class='hs-varop'>/=</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>currentTag</span> <span class='hs-varop'>.</span> <span class='hs-varid'>windowset</span>
<a name="line-211"></a> <span class='hs-varid'>when</span> <span class='hs-varid'>changed</span> <span class='hs-varop'>$</span> <span class='hs-varid'>windows</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>greedyView</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getFocus</span> <span class='hs-varid'>cs</span>
<a name="line-212"></a>
<a name="line-213"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>LayoutModifier</span> <span class='hs-conid'>WorkspaceCursors</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-214"></a> <span class='hs-varid'>redoLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>WorkspaceCursors</span> <span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>arrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-215"></a> <span class='hs-varid'>cws</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varop'>$</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>currentTag</span> <span class='hs-varop'>.</span> <span class='hs-varid'>windowset</span>
<a name="line-216"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>arrs</span><span class='hs-layout'>,</span><span class='hs-conid'>WorkspaceCursors</span> <span class='hs-varop'><$></span> <span class='hs-varid'>focusTo</span> <span class='hs-varid'>cws</span> <span class='hs-varid'>cs</span><span class='hs-layout'>)</span>
<a name="line-217"></a>
<a name="line-218"></a> <span class='hs-varid'>handleMess</span> <span class='hs-layout'>(</span><span class='hs-conid'>WorkspaceCursors</span> <span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span>
<a name="line-219"></a> <span class='hs-varid'>sequenceA</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fmap</span> <span class='hs-conid'>WorkspaceCursors</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>$</span> <span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>unWrap</span> <span class='hs-varop'><$></span> <span class='hs-varid'>fromMessage</span> <span class='hs-varid'>m</span>
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