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<title>XMonad/Hooks/CurrentWorkspaceOnTop.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE DeriveDataTypeable #-}</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.Hooks.CurrentWorkspaceOnTop</span>
<a name="line-5"></a><span class='hs-comment'>-- Copyright : (c) Jan Vornberger 2009</span>
<a name="line-6"></a><span class='hs-comment'>-- License : BSD3-style (see LICENSE)</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer : jan.vornberger@informatik.uni-oldenburg.de</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability : unstable</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability : not portable</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- Ensures that the windows of the current workspace are always in front</span>
<a name="line-13"></a><span class='hs-comment'>-- of windows that are located on other visible screens. This becomes important</span>
<a name="line-14"></a><span class='hs-comment'>-- if you use decoration and drag windows from one screen to another. Using this</span>
<a name="line-15"></a><span class='hs-comment'>-- module, the dragged window will always be in front of other windows.</span>
<a name="line-16"></a><span class='hs-comment'>--</span>
<a name="line-17"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>Hooks</span><span class='hs-varop'>.</span><span class='hs-conid'>CurrentWorkspaceOnTop</span> <span class='hs-layout'>(</span>
<a name="line-20"></a> <span class='hs-comment'>-- * Usage</span>
<a name="line-21"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-22"></a> <span class='hs-varid'>currentWorkspaceOnTop</span>
<a name="line-23"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span>
<a name="line-26"></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-27"></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'>Util</span><span class='hs-varop'>.</span><span class='hs-conid'>ExtensibleState</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>XS</span>
<a name="line-28"></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-varid'>when</span><span class='hs-layout'>)</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>M</span>
<a name="line-30"></a>
<a name="line-31"></a><span class='hs-comment'>-- $usage</span>
<a name="line-32"></a><span class='hs-comment'>-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-33"></a><span class='hs-comment'>--</span>
<a name="line-34"></a><span class='hs-comment'>-- > import XMonad.Hooks.CurrentWorkspaceOnTop</span>
<a name="line-35"></a><span class='hs-comment'>-- ></span>
<a name="line-36"></a><span class='hs-comment'>-- > main = xmonad $ defaultConfig {</span>
<a name="line-37"></a><span class='hs-comment'>-- > ...</span>
<a name="line-38"></a><span class='hs-comment'>-- > logHook = currentWorkspaceOnTop</span>
<a name="line-39"></a><span class='hs-comment'>-- > ...</span>
<a name="line-40"></a><span class='hs-comment'>-- > }</span>
<a name="line-41"></a><span class='hs-comment'>--</span>
<a name="line-42"></a>
<a name="line-43"></a><a name="CWOTState"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>CWOTState</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CWOTS</span> <span class='hs-conid'>String</span> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Typeable</span>
<a name="line-44"></a>
<a name="line-45"></a><a name="instance%20ExtensionClass%20CWOTState"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ExtensionClass</span> <span class='hs-conid'>CWOTState</span> <span class='hs-keyword'>where</span>
<a name="line-46"></a> <span class='hs-varid'>initialValue</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CWOTS</span> <span class='hs-str'>""</span>
<a name="line-47"></a>
<a name="line-48"></a><a name="currentWorkspaceOnTop"></a><span class='hs-definition'>currentWorkspaceOnTop</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>X</span> <span class='hs-conid'>()</span>
<a name="line-49"></a><span class='hs-definition'>currentWorkspaceOnTop</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withDisplay</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>d</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-50"></a> <span class='hs-varid'>ws</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>windowset</span>
<a name="line-51"></a> <span class='hs-layout'>(</span><span class='hs-conid'>CWOTS</span> <span class='hs-varid'>lastTag</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>XS</span><span class='hs-varop'>.</span><span class='hs-varid'>get</span>
<a name="line-52"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>curTag</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>tag</span> <span class='hs-varop'>.</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>workspace</span> <span class='hs-varop'>.</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>current</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ws</span>
<a name="line-53"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>curTag</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>lastTag</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-54"></a> <span class='hs-comment'>-- the following is more or less a reimplementation of what's happening in "XMonad.Operation"</span>
<a name="line-55"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>current</span> <span class='hs-varid'>ws</span>
<a name="line-56"></a> <span class='hs-varid'>wsp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>workspace</span> <span class='hs-varid'>s</span>
<a name="line-57"></a> <span class='hs-varid'>viewrect</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>screenRect</span> <span class='hs-varop'>$</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>screenDetail</span> <span class='hs-varid'>s</span>
<a name="line-58"></a> <span class='hs-varid'>tmpStack</span> <span class='hs-keyglyph'>=</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-varid'>wsp</span><span class='hs-layout'>)</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-varop'>`</span><span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>notMember</span><span class='hs-varop'>`</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>floating</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span>
<a name="line-59"></a> <span class='hs-layout'>(</span><span class='hs-varid'>rs</span><span class='hs-layout'>,</span> <span class='hs-varid'>ml'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>runLayout</span> <span class='hs-varid'>wsp</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'>tmpStack</span> <span class='hs-layout'>}</span> <span class='hs-varid'>viewrect</span>
<a name="line-60"></a> <span class='hs-varid'>updateLayout</span> <span class='hs-varid'>curTag</span> <span class='hs-varid'>ml'</span>
<a name="line-61"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>this</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>view</span> <span class='hs-varid'>curTag</span> <span class='hs-varid'>ws</span>
<a name="line-62"></a> <span class='hs-varid'>fltWins</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>flip</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>member</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>floating</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>index</span> <span class='hs-varid'>this</span>
<a name="line-63"></a> <span class='hs-varid'>wins</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fltWins</span> <span class='hs-varop'>++</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>fst</span> <span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- order: first all floating windows, then the order the layout returned</span>
<a name="line-64"></a> <span class='hs-comment'>-- end of reimplementation</span>
<a name="line-65"></a>
<a name="line-66"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>null</span> <span class='hs-varop'>$</span> <span class='hs-varid'>wins</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-67"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>raiseWindow</span> <span class='hs-varid'>d</span> <span class='hs-layout'>(</span><span class='hs-varid'>head</span> <span class='hs-varid'>wins</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- raise first window of current workspace to the very top,</span>
<a name="line-68"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>restackWindows</span> <span class='hs-varid'>d</span> <span class='hs-varid'>wins</span> <span class='hs-comment'>-- then use restackWindows to let all other windows from the workspace follow</span>
<a name="line-69"></a> <span class='hs-conid'>XS</span><span class='hs-varop'>.</span><span class='hs-varid'>put</span><span class='hs-layout'>(</span><span class='hs-conid'>CWOTS</span> <span class='hs-varid'>curTag</span><span class='hs-layout'>)</span>
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