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<title>XMonad/Hooks/InsertPosition.hs</title>
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<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.Hooks.InsertPosition</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) 2009 Adam Vogt</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see xmonad/LICENSE)</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : vogt.adam@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 : portable</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Configure where new windows should be added and which window should be</span>
<a name="line-12"></a><span class='hs-comment'>-- focused.</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-15"></a>
<a name="line-16"></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'>InsertPosition</span> <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'>-- $usage</span>
<a name="line-19"></a> <span class='hs-varid'>insertPosition</span>
<a name="line-20"></a> <span class='hs-layout'>,</span><span class='hs-conid'>Focus</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Position</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-21"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-layout'>(</span><span class='hs-conid'>ManageHook</span><span class='hs-layout'>,</span> <span class='hs-conid'>MonadReader</span><span class='hs-layout'>(</span><span class='hs-varid'>ask</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>StackSet</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>W</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'><$></span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-26"></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'>fromMaybe</span><span class='hs-layout'>)</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'>List</span><span class='hs-layout'>(</span><span class='hs-varid'>find</span><span class='hs-layout'>)</span>
<a name="line-28"></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'>Endo</span><span class='hs-layout'>(</span><span class='hs-conid'>Endo</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-29"></a>
<a name="line-30"></a><span class='hs-comment'>-- $usage</span>
<a name="line-31"></a><span class='hs-comment'>-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-32"></a><span class='hs-comment'>--</span>
<a name="line-33"></a><span class='hs-comment'>-- > import XMonad.Hooks.InsertPosition</span>
<a name="line-34"></a><span class='hs-comment'>-- > xmonad defaultConfig { manageHook = insertPosition Master Newer <+> myManageHook }</span>
<a name="line-35"></a><span class='hs-comment'>--</span>
<a name="line-36"></a><span class='hs-comment'>-- You should you put the manageHooks that use 'doShift' to take effect</span>
<a name="line-37"></a><span class='hs-comment'>-- /before/ 'insertPosition', so that the window order will be consistent.</span>
<a name="line-38"></a><span class='hs-comment'>-- Because ManageHooks compose from right to left (like function composition</span>
<a name="line-39"></a><span class='hs-comment'>-- '.'), this means that 'insertPosition' should be the leftmost ManageHook.</span>
<a name="line-40"></a>
<a name="line-41"></a><a name="Position"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Position</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Master</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>End</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Above</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Below</span>
<a name="line-42"></a><a name="Focus"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Focus</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Newer</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Older</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="insertPosition"></a><span class='hs-comment'>-- | insertPosition. A manage hook for placing new windows. XMonad's default is</span>
<a name="line-45"></a><span class='hs-comment'>-- the same as using: @insertPosition Above Newer@.</span>
<a name="line-46"></a><span class='hs-definition'>insertPosition</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Position</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Focus</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ManageHook</span>
<a name="line-47"></a><span class='hs-definition'>insertPosition</span> <span class='hs-varid'>pos</span> <span class='hs-varid'>foc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Endo</span> <span class='hs-varop'>.</span> <span class='hs-varid'>g</span> <span class='hs-varop'><$></span> <span class='hs-varid'>ask</span>
<a name="line-48"></a> <span class='hs-keyword'>where</span>
<a name="line-49"></a> <span class='hs-varid'>g</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>viewingWs</span> <span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-varid'>updateFocus</span> <span class='hs-varid'>w</span> <span class='hs-varop'>.</span> <span class='hs-varid'>ins</span> <span class='hs-varid'>w</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>delete</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span>
<a name="line-50"></a> <span class='hs-varid'>ins</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>f</span> <span class='hs-varid'>ws</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>fromMaybe</span> <span class='hs-varid'>id</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focusWindow</span> <span class='hs-varop'><$></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>peek</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>f</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-51"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>pos</span> <span class='hs-keyword'>of</span>
<a name="line-52"></a> <span class='hs-conid'>Master</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>insertUp</span> <span class='hs-varid'>w</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focusMaster</span>
<a name="line-53"></a> <span class='hs-conid'>End</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>insertDown</span> <span class='hs-varid'>w</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>modify'</span> <span class='hs-varid'>focusLast'</span>
<a name="line-54"></a> <span class='hs-conid'>Above</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>insertUp</span> <span class='hs-varid'>w</span>
<a name="line-55"></a> <span class='hs-conid'>Below</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>insertDown</span> <span class='hs-varid'>w</span>
<a name="line-56"></a> <span class='hs-varid'>updateFocus</span> <span class='hs-keyglyph'>=</span>
<a name="line-57"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>foc</span> <span class='hs-keyword'>of</span>
<a name="line-58"></a> <span class='hs-conid'>Older</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>const</span> <span class='hs-varid'>id</span>
<a name="line-59"></a> <span class='hs-conid'>Newer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>focusWindow</span>
<a name="line-60"></a>
<a name="line-61"></a><a name="viewingWs"></a><span class='hs-comment'>-- | Modify the StackSet when the workspace containing w is focused</span>
<a name="line-62"></a><span class='hs-definition'>viewingWs</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>i</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span><span class='hs-varid'>a</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'>StackSet</span> <span class='hs-varid'>i</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s</span> <span class='hs-varid'>sd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>StackSet</span> <span class='hs-varid'>i</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s</span> <span class='hs-varid'>sd</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'>StackSet</span> <span class='hs-varid'>i</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s</span> <span class='hs-varid'>sd</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>StackSet</span> <span class='hs-varid'>i</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s</span> <span class='hs-varid'>sd</span>
<a name="line-63"></a><span class='hs-definition'>viewingWs</span> <span class='hs-varid'>w</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-64"></a> <span class='hs-varid'>i</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>tag</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>workspace</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>current</span>
<a name="line-65"></a> <span class='hs-varid'>ws</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>find</span> <span class='hs-layout'>(</span><span class='hs-varid'>elem</span> <span class='hs-varid'>w</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>integrate'</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>stack</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'>workspaces</span>
<a name="line-66"></a> <span class='hs-varid'>maybe</span> <span class='hs-varid'>id</span> <span class='hs-layout'>(</span><span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>view</span> <span class='hs-varid'>i</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</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'>view</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>tag</span><span class='hs-layout'>)</span> <span class='hs-varid'>ws</span>
<a name="line-67"></a>
<a name="line-68"></a><a name="insertDown"></a><span class='hs-comment'>-- | 'insertDown' and 'focusLast' belong in XMonad.StackSet?</span>
<a name="line-69"></a><span class='hs-definition'>insertDown</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>StackSet</span> <span class='hs-varid'>i</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s</span> <span class='hs-varid'>sd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>StackSet</span> <span class='hs-varid'>i</span> <span class='hs-varid'>l</span> <span class='hs-varid'>a</span> <span class='hs-varid'>s</span> <span class='hs-varid'>sd</span>
<a name="line-70"></a><span class='hs-definition'>insertDown</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>swapDown</span> <span class='hs-varop'>.</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>insertUp</span> <span class='hs-varid'>w</span>
<a name="line-71"></a>
<a name="line-72"></a><a name="focusLast'"></a><span class='hs-definition'>focusLast'</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-conid'>W</span><span class='hs-varop'>.</span><span class='hs-conid'>Stack</span> <span class='hs-varid'>a</span>
<a name="line-73"></a><span class='hs-definition'>focusLast'</span> <span class='hs-varid'>st</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>ws</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>W</span><span class='hs-varop'>.</span><span class='hs-varid'>integrate</span> <span class='hs-varid'>st</span>
<a name="line-74"></a> <span class='hs-keyword'>in</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'>last</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>tail</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>ws</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span>
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