<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ --> <title>XMonad/Util/WorkspaceCompare.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-2"></a><span class='hs-comment'>-- |</span> <a name="line-3"></a><span class='hs-comment'>-- Module : XMonad.Util.WorkspaceCompare</span> <a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Spencer Janssen <spencerjanssen@gmail.com></span> <a name="line-5"></a><span class='hs-comment'>-- License : BSD3-style (see LICENSE)</span> <a name="line-6"></a><span class='hs-comment'>--</span> <a name="line-7"></a><span class='hs-comment'>-- Maintainer : Spencer Janssen <spencerjanssen@gmail.com></span> <a name="line-8"></a><span class='hs-comment'>-- Stability : unstable</span> <a name="line-9"></a><span class='hs-comment'>-- Portability : unportable</span> <a name="line-10"></a><span class='hs-comment'>--</span> <a name="line-11"></a> <a name="line-12"></a><span class='hs-keyword'>module</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'>WorkspaceCompare</span> <span class='hs-layout'>(</span> <span class='hs-conid'>WorkspaceCompare</span><span class='hs-layout'>,</span> <span class='hs-conid'>WorkspaceSort</span> <a name="line-13"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getWsIndex</span> <a name="line-14"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getWsCompare</span> <a name="line-15"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getWsCompareByTag</span> <a name="line-16"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getXineramaWsCompare</span> <a name="line-17"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkWsSort</span> <a name="line-18"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getSortByIndex</span> <a name="line-19"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getSortByTag</span> <a name="line-20"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getSortByXineramaRule</span> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-21"></a> <a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span> <a name="line-23"></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-24"></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-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span> <a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Ord</span> <a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <a name="line-28"></a> <a name="line-29"></a><a name="WorkspaceCompare"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>WorkspaceCompare</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>WorkspaceId</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>WorkspaceId</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ordering</span> <a name="line-30"></a><a name="WorkspaceSort"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>WorkspaceSort</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>WindowSpace</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>WindowSpace</span><span class='hs-keyglyph'>]</span> <a name="line-31"></a> <a name="line-32"></a><a name="getWsIndex"></a><span class='hs-comment'>-- | Lookup the index of a workspace id in the user's config, return Nothing</span> <a name="line-33"></a><span class='hs-comment'>-- if that workspace does not exist in the config.</span> <a name="line-34"></a><span class='hs-definition'>getWsIndex</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>X</span> <span class='hs-layout'>(</span><span class='hs-conid'>WorkspaceId</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span> <a name="line-35"></a><span class='hs-definition'>getWsIndex</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-36"></a> <span class='hs-varid'>spaces</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>asks</span> <span class='hs-layout'>(</span><span class='hs-varid'>workspaces</span> <span class='hs-varop'>.</span> <span class='hs-varid'>config</span><span class='hs-layout'>)</span> <a name="line-37"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>flip</span> <span class='hs-varid'>elemIndex</span> <span class='hs-varid'>spaces</span> <a name="line-38"></a> <a name="line-39"></a><a name="getWsCompare"></a><span class='hs-comment'>-- | A comparison function for WorkspaceId, based on the index of the</span> <a name="line-40"></a><span class='hs-comment'>-- tags in the user's config.</span> <a name="line-41"></a><span class='hs-definition'>getWsCompare</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>X</span> <span class='hs-conid'>WorkspaceCompare</span> <a name="line-42"></a><span class='hs-definition'>getWsCompare</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-43"></a> <span class='hs-varid'>wsIndex</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getWsIndex</span> <a name="line-44"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>wsIndex</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>wsIndex</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>compare</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <a name="line-45"></a> <span class='hs-keyword'>where</span> <a name="line-46"></a> <span class='hs-varid'>f</span> <span class='hs-conid'>Nothing</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>EQ</span> <a name="line-47"></a> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>LT</span> <a name="line-48"></a> <span class='hs-varid'>f</span> <span class='hs-conid'>Nothing</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>GT</span> <a name="line-49"></a> <span class='hs-varid'>f</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-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>compare</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <a name="line-50"></a> <a name="line-51"></a><a name="getWsCompareByTag"></a><span class='hs-comment'>-- | A simple comparison function that orders workspaces</span> <a name="line-52"></a><span class='hs-comment'>-- lexicographically by tag.</span> <a name="line-53"></a><span class='hs-definition'>getWsCompareByTag</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>X</span> <span class='hs-conid'>WorkspaceCompare</span> <a name="line-54"></a><span class='hs-definition'>getWsCompareByTag</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>compare</span> <a name="line-55"></a> <a name="line-56"></a><a name="getXineramaWsCompare"></a><span class='hs-comment'>-- | A comparison function for Xinerama based on visibility, workspace</span> <a name="line-57"></a><span class='hs-comment'>-- and screen id. It produces the same ordering as</span> <a name="line-58"></a><span class='hs-comment'>-- 'XMonad.Hooks.DynamicLog.pprWindowSetXinerama'.</span> <a name="line-59"></a><span class='hs-definition'>getXineramaWsCompare</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>X</span> <span class='hs-conid'>WorkspaceCompare</span> <a name="line-60"></a><span class='hs-definition'>getXineramaWsCompare</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-61"></a> <span class='hs-varid'>w</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gets</span> <span class='hs-varid'>windowset</span> <a name="line-62"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>isOnScreen</span> <span class='hs-varid'>a</span> <span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-varid'>isOnScreen</span> <span class='hs-varid'>b</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span> <a name="line-63"></a> <span class='hs-layout'>(</span><span class='hs-conid'>True</span><span class='hs-layout'>,</span> <span class='hs-conid'>True</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>comparing</span> <span class='hs-layout'>(</span><span class='hs-varid'>tagToSid</span> <span class='hs-layout'>(</span><span class='hs-varid'>onScreen</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <a name="line-64"></a> <span class='hs-layout'>(</span><span class='hs-conid'>False</span><span class='hs-layout'>,</span> <span class='hs-conid'>False</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>compare</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <a name="line-65"></a> <span class='hs-layout'>(</span><span class='hs-conid'>True</span><span class='hs-layout'>,</span> <span class='hs-conid'>False</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>LT</span> <a name="line-66"></a> <span class='hs-layout'>(</span><span class='hs-conid'>False</span><span class='hs-layout'>,</span> <span class='hs-conid'>True</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GT</span> <a name="line-67"></a> <span class='hs-keyword'>where</span> <a name="line-68"></a> <span class='hs-varid'>onScreen</span> <span class='hs-varid'>w</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'>w</span> <span class='hs-conop'>:</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>visible</span> <span class='hs-varid'>w</span> <a name="line-69"></a> <span class='hs-varid'>isOnScreen</span> <span class='hs-varid'>a</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</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-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>onScreen</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <a name="line-70"></a> <span class='hs-varid'>tagToSid</span> <span class='hs-varid'>s</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>screen</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromJust</span> <span class='hs-varop'>$</span> <span class='hs-varid'>find</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>tag</span> <span class='hs-varop'>.</span> <span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>workspace</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <a name="line-71"></a> <a name="line-72"></a><a name="mkWsSort"></a><span class='hs-comment'>-- | Create a workspace sorting function from a workspace comparison</span> <a name="line-73"></a><span class='hs-comment'>-- function.</span> <a name="line-74"></a><span class='hs-definition'>mkWsSort</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>X</span> <span class='hs-conid'>WorkspaceCompare</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>X</span> <span class='hs-conid'>WorkspaceSort</span> <a name="line-75"></a><span class='hs-definition'>mkWsSort</span> <span class='hs-varid'>cmpX</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-76"></a> <span class='hs-varid'>cmp</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>cmpX</span> <a name="line-77"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sortBy</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>cmp</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>tag</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>S</span><span class='hs-varop'>.</span><span class='hs-varid'>tag</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-78"></a> <a name="line-79"></a><a name="getSortByIndex"></a><span class='hs-comment'>-- | Sort several workspaces according to their tags' indices in the</span> <a name="line-80"></a><span class='hs-comment'>-- user's config.</span> <a name="line-81"></a><span class='hs-definition'>getSortByIndex</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>X</span> <span class='hs-conid'>WorkspaceSort</span> <a name="line-82"></a><span class='hs-definition'>getSortByIndex</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkWsSort</span> <span class='hs-varid'>getWsCompare</span> <a name="line-83"></a> <a name="line-84"></a><a name="getSortByTag"></a><span class='hs-comment'>-- | Sort workspaces lexicographically by tag.</span> <a name="line-85"></a><span class='hs-definition'>getSortByTag</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>X</span> <span class='hs-conid'>WorkspaceSort</span> <a name="line-86"></a><span class='hs-definition'>getSortByTag</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkWsSort</span> <span class='hs-varid'>getWsCompareByTag</span> <a name="line-87"></a> <a name="line-88"></a><a name="getSortByXineramaRule"></a><span class='hs-comment'>-- | Sort serveral workspaces for xinerama displays, in the same order</span> <a name="line-89"></a><span class='hs-comment'>-- produced by 'XMonad.Hooks.DynamicLog.pprWindowSetXinerama': first</span> <a name="line-90"></a><span class='hs-comment'>-- visible workspaces, sorted by screen, then hidden workspaces,</span> <a name="line-91"></a><span class='hs-comment'>-- sorted by tag.</span> <a name="line-92"></a><span class='hs-definition'>getSortByXineramaRule</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>X</span> <span class='hs-conid'>WorkspaceSort</span> <a name="line-93"></a><span class='hs-definition'>getSortByXineramaRule</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkWsSort</span> <span class='hs-varid'>getXineramaWsCompare</span> <a name="line-94"></a> </pre></body> </html>
