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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, TypeSynonymInstances, FlexibleContexts #-}</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-4"></a><span class='hs-comment'>-- |</span>
<a name="line-5"></a><span class='hs-comment'>-- Module : XMonad.Layout.IM</span>
<a name="line-6"></a><span class='hs-comment'>-- Copyright : (c) Roman Cheplyaka, Ivan N. Veselov <veselov@gmail.com></span>
<a name="line-7"></a><span class='hs-comment'>-- License : BSD-style (see LICENSE)</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- Maintainer : Roman Cheplyaka <roma@ro-che.info></span>
<a name="line-10"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-11"></a><span class='hs-comment'>-- Portability : unportable</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- Layout modfier suitable for workspace with multi-windowed instant messenger</span>
<a name="line-14"></a><span class='hs-comment'>-- (like Psi or Tkabber).</span>
<a name="line-15"></a><span class='hs-comment'>--</span>
<a name="line-16"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-keyword'>module</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'>IM</span> <span class='hs-layout'>(</span>
<a name="line-19"></a> <span class='hs-comment'>-- * Usage</span>
<a name="line-20"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-21"></a>
<a name="line-22"></a> <span class='hs-comment'>-- * Hints</span>
<a name="line-23"></a> <span class='hs-comment'>-- $hints</span>
<a name="line-24"></a>
<a name="line-25"></a> <span class='hs-comment'>-- * TODO</span>
<a name="line-26"></a> <span class='hs-comment'>-- $todo</span>
<a name="line-27"></a> <span class='hs-conid'>Property</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>IM</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>withIM</span><span class='hs-layout'>,</span> <span class='hs-varid'>gridIM</span><span class='hs-layout'>,</span>
<a name="line-28"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-29"></a>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-31"></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'>S</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-33"></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-layout'>(</span><span class='hs-varid'>splitHorizontallyBy</span><span class='hs-layout'>)</span>
<a name="line-34"></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'>Grid</span>
<a name="line-35"></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>
<a name="line-36"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Util</span><span class='hs-varop'>.</span><span class='hs-conid'>WindowProperties</span>
<a name="line-37"></a>
<a name="line-38"></a><span class='hs-comment'>-- $usage</span>
<a name="line-39"></a><span class='hs-comment'>-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-40"></a><span class='hs-comment'>--</span>
<a name="line-41"></a><span class='hs-comment'>-- > import XMonad.Layout.IM</span>
<a name="line-42"></a><span class='hs-comment'>-- > import Data.Ratio ((%))</span>
<a name="line-43"></a><span class='hs-comment'>--</span>
<a name="line-44"></a><span class='hs-comment'>-- Then edit your @layoutHook@ by adding IM modifier to layout which you prefer</span>
<a name="line-45"></a><span class='hs-comment'>-- for managing your chat windows (Grid in this example, another useful choice</span>
<a name="line-46"></a><span class='hs-comment'>-- to consider is Tabbed layout).</span>
<a name="line-47"></a><span class='hs-comment'>--</span>
<a name="line-48"></a><span class='hs-comment'>-- > myLayout = withIM (1%7) (ClassName "Tkabber") Grid ||| Full ||| etc..</span>
<a name="line-49"></a><span class='hs-comment'>-- > main = xmonad defaultConfig { layoutHook = myLayout }</span>
<a name="line-50"></a><span class='hs-comment'>--</span>
<a name="line-51"></a><span class='hs-comment'>-- Here @1%7@ is the part of the screen which your roster will occupy,</span>
<a name="line-52"></a><span class='hs-comment'>-- @ClassName \"Tkabber\"@ tells xmonad which window is actually your roster.</span>
<a name="line-53"></a><span class='hs-comment'>--</span>
<a name="line-54"></a><span class='hs-comment'>-- Screenshot: <<a href="http://haskell.org/haskellwiki/Image:Xmonad-layout-im.png">http://haskell.org/haskellwiki/Image:Xmonad-layout-im.png</a>></span>
<a name="line-55"></a><span class='hs-comment'>--</span>
<a name="line-56"></a><span class='hs-comment'>-- For more detailed instructions on editing the layoutHook see:</span>
<a name="line-57"></a><span class='hs-comment'>--</span>
<a name="line-58"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_the_layout_hook"</span>
<a name="line-59"></a>
<a name="line-60"></a><span class='hs-comment'>-- $hints</span>
<a name="line-61"></a><span class='hs-comment'>--</span>
<a name="line-62"></a><span class='hs-comment'>-- To launch IM layout automatically on your IM workspace use "XMonad.Layout.PerWorkspace".</span>
<a name="line-63"></a><span class='hs-comment'>--</span>
<a name="line-64"></a><span class='hs-comment'>-- By default the roster window will appear on the left side.</span>
<a name="line-65"></a><span class='hs-comment'>-- To place roster window on the right side, use @reflectHoriz@ from</span>
<a name="line-66"></a><span class='hs-comment'>-- "XMonad.Layout.Reflect" module.</span>
<a name="line-67"></a>
<a name="line-68"></a><span class='hs-comment'>-- $todo</span>
<a name="line-69"></a><span class='hs-comment'>-- This item are questionable. Please let me know if you find them useful.</span>
<a name="line-70"></a><span class='hs-comment'>--</span>
<a name="line-71"></a><span class='hs-comment'>-- * shrink\/expand</span>
<a name="line-72"></a><span class='hs-comment'>--</span>
<a name="line-73"></a>
<a name="line-74"></a><a name="AddRoster"></a><span class='hs-comment'>-- | Data type for LayoutModifier which converts given layout to IM-layout</span>
<a name="line-75"></a><a name="AddRoster"></a><span class='hs-comment'>-- (with dedicated space for the roster and original layout for chat windows)</span>
<a name="line-76"></a><a name="AddRoster"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>AddRoster</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>AddRoster</span> <span class='hs-conid'>Rational</span> <span class='hs-conid'>Property</span> <span class='hs-keyword'>deriving</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-77"></a>
<a name="line-78"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>LayoutModifier</span> <span class='hs-conid'>AddRoster</span> <span class='hs-conid'>Window</span> <span class='hs-keyword'>where</span>
<a name="line-79"></a> <span class='hs-varid'>modifyLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>AddRoster</span> <span class='hs-varid'>ratio</span> <span class='hs-varid'>prop</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>applyIM</span> <span class='hs-varid'>ratio</span> <span class='hs-varid'>prop</span>
<a name="line-80"></a> <span class='hs-varid'>modifierDescription</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"IM"</span>
<a name="line-81"></a>
<a name="line-82"></a><a name="withIM"></a><span class='hs-comment'>-- | Modifier which converts given layout to IM-layout (with dedicated</span>
<a name="line-83"></a><span class='hs-comment'>-- space for roster and original layout for chat windows)</span>
<a name="line-84"></a><span class='hs-definition'>withIM</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>LayoutClass</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Rational</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Property</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'>AddRoster</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span>
<a name="line-85"></a><span class='hs-definition'>withIM</span> <span class='hs-varid'>ratio</span> <span class='hs-varid'>prop</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-varop'>$</span> <span class='hs-conid'>AddRoster</span> <span class='hs-varid'>ratio</span> <span class='hs-varid'>prop</span>
<a name="line-86"></a>
<a name="line-87"></a><a name="gridIM"></a><span class='hs-comment'>-- | IM layout modifier applied to the Grid layout</span>
<a name="line-88"></a><span class='hs-definition'>gridIM</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Rational</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Property</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ModifiedLayout</span> <span class='hs-conid'>AddRoster</span> <span class='hs-conid'>Grid</span> <span class='hs-varid'>a</span>
<a name="line-89"></a><span class='hs-definition'>gridIM</span> <span class='hs-varid'>ratio</span> <span class='hs-varid'>prop</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withIM</span> <span class='hs-varid'>ratio</span> <span class='hs-varid'>prop</span> <span class='hs-conid'>Grid</span>
<a name="line-90"></a>
<a name="line-91"></a><a name="applyIM"></a><span class='hs-comment'>-- | Internal function for adding space for the roster specified by</span>
<a name="line-92"></a><span class='hs-comment'>-- the property and running original layout for all chat windows</span>
<a name="line-93"></a><span class='hs-definition'>applyIM</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>LayoutClass</span> <span class='hs-varid'>l</span> <span class='hs-conid'>Window</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span>
<a name="line-94"></a> <span class='hs-conid'>Rational</span>
<a name="line-95"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Property</span>
<a name="line-96"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-conid'>Workspace</span> <span class='hs-conid'>WorkspaceId</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-conid'>Window</span><span class='hs-layout'>)</span> <span class='hs-conid'>Window</span>
<a name="line-97"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Rectangle</span>
<a name="line-98"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Window</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rectangle</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>l</span> <span class='hs-conid'>Window</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-99"></a><span class='hs-definition'>applyIM</span> <span class='hs-varid'>ratio</span> <span class='hs-varid'>prop</span> <span class='hs-varid'>wksp</span> <span class='hs-varid'>rect</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-100"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>stack</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>stack</span> <span class='hs-varid'>wksp</span>
<a name="line-101"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ws</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>integrate'</span> <span class='hs-varop'>$</span> <span class='hs-varid'>stack</span>
<a name="line-102"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>masterRect</span><span class='hs-layout'>,</span> <span class='hs-varid'>slaveRect</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>splitHorizontallyBy</span> <span class='hs-varid'>ratio</span> <span class='hs-varid'>rect</span>
<a name="line-103"></a> <span class='hs-varid'>master</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>findM</span> <span class='hs-layout'>(</span><span class='hs-varid'>hasProperty</span> <span class='hs-varid'>prop</span><span class='hs-layout'>)</span> <span class='hs-varid'>ws</span>
<a name="line-104"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>master</span> <span class='hs-keyword'>of</span>
<a name="line-105"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-106"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>filteredStack</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>stack</span> <span class='hs-varop'>>>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>/=</span><span class='hs-layout'>)</span>
<a name="line-107"></a> <span class='hs-varid'>wrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>runLayout</span> <span class='hs-layout'>(</span><span class='hs-varid'>wksp</span> <span class='hs-layout'>{</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>stack</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filteredStack</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-varid'>slaveRect</span>
<a name="line-108"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-varid'>masterRect</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>wrs</span><span class='hs-layout'>,</span> <span class='hs-varid'>snd</span> <span class='hs-varid'>wrs</span><span class='hs-layout'>)</span>
<a name="line-109"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>runLayout</span> <span class='hs-varid'>wksp</span> <span class='hs-varid'>rect</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="findM"></a><span class='hs-comment'>-- | Like find, but works with monadic computation instead of pure function.</span>
<a name="line-112"></a><span class='hs-definition'>findM</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-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</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-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-113"></a><span class='hs-definition'>findM</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-114"></a><span class='hs-definition'>findM</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>f</span> <span class='hs-varid'>x</span><span class='hs-layout'>;</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>b</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>findM</span> <span class='hs-varid'>f</span> <span class='hs-varid'>xs</span> <span class='hs-layout'>}</span>
<a name="line-115"></a>
<a name="line-116"></a><a name="IM"></a><span class='hs-comment'>-- | This is for compatibility with old configs only and will be removed in future versions!</span>
<a name="line-117"></a><a name="IM"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>IM</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IM</span> <span class='hs-conid'>Rational</span> <span class='hs-conid'>Property</span> <span class='hs-keyword'>deriving</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-118"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>LayoutClass</span> <span class='hs-conid'>IM</span> <span class='hs-conid'>Window</span> <span class='hs-keyword'>where</span>
<a name="line-119"></a> <span class='hs-varid'>description</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"IM"</span>
<a name="line-120"></a> <span class='hs-varid'>doLayout</span> <span class='hs-layout'>(</span><span class='hs-conid'>IM</span> <span class='hs-varid'>r</span> <span class='hs-varid'>prop</span><span class='hs-layout'>)</span> <span class='hs-varid'>rect</span> <span class='hs-varid'>stack</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-121"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ws</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>integrate</span> <span class='hs-varid'>stack</span>
<a name="line-122"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>masterRect</span><span class='hs-layout'>,</span> <span class='hs-varid'>slaveRect</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>splitHorizontallyBy</span> <span class='hs-varid'>r</span> <span class='hs-varid'>rect</span>
<a name="line-123"></a> <span class='hs-varid'>master</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>findM</span> <span class='hs-layout'>(</span><span class='hs-varid'>hasProperty</span> <span class='hs-varid'>prop</span><span class='hs-layout'>)</span> <span class='hs-varid'>ws</span>
<a name="line-124"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>positions</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>master</span> <span class='hs-keyword'>of</span>
<a name="line-125"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-varid'>masterRect</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>arrange</span> <span class='hs-varid'>defaultRatio</span> <span class='hs-varid'>slaveRect</span> <span class='hs-layout'>(</span><span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-varop'>/=</span><span class='hs-layout'>)</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span>
<a name="line-126"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>arrange</span> <span class='hs-varid'>defaultRatio</span> <span class='hs-varid'>rect</span> <span class='hs-varid'>ws</span>
<a name="line-127"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>positions</span><span class='hs-layout'>,</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span>
</pre></body>
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