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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.Actions.OnScreen</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) 2009 Nils Schweinsberg</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 : Nils Schweinsberg <mail@n-sch.de></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><span class='hs-comment'>-- Control workspaces on different screens (in xinerama mode).</span>
<a name="line-12"></a><span class='hs-comment'>--</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'>OnScreen</span> <span class='hs-layout'>(</span>
<a name="line-16"></a> <span class='hs-comment'>-- * Usage</span>
<a name="line-17"></a> <span class='hs-comment'>-- $usage</span>
<a name="line-18"></a> <span class='hs-varid'>onScreen</span>
<a name="line-19"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>viewOnScreen</span>
<a name="line-20"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>greedyViewOnScreen</span>
<a name="line-21"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>onlyOnScreen</span>
<a name="line-22"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-23"></a>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>XMonad</span><span class='hs-varop'>.</span><span class='hs-conid'>StackSet</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'>Monad</span><span class='hs-layout'>(</span><span class='hs-varid'>guard</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'>List</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><span class='hs-layout'>(</span><span class='hs-varid'>fromMaybe</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'>Function</span><span class='hs-layout'>(</span><span class='hs-varid'>on</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'>--</span>
<a name="line-32"></a><span class='hs-comment'>-- This module provides an easy way to control, what you see on other screens in</span>
<a name="line-33"></a><span class='hs-comment'>-- xinerama mode without having to focus them. Put this into your</span>
<a name="line-34"></a><span class='hs-comment'>-- @~\/.xmonad\/xmonad.hs@:</span>
<a name="line-35"></a><span class='hs-comment'>--</span>
<a name="line-36"></a><span class='hs-comment'>-- > import XMonad.Actions.OnScreen</span>
<a name="line-37"></a><span class='hs-comment'>--</span>
<a name="line-38"></a><span class='hs-comment'>-- Then add the appropriate keybindings, for example replace your current keys</span>
<a name="line-39"></a><span class='hs-comment'>-- to switch the workspaces with this at the bottom of your keybindings:</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><span class='hs-comment'>-- > [ ((m .|. modm, k), windows (f i))</span>
<a name="line-43"></a><span class='hs-comment'>-- > | (i, k) <- zip (workspaces conf) ([xK_1 .. xK_9] ++ [xK_0])</span>
<a name="line-44"></a><span class='hs-comment'>-- > , (f, m) <- [ (viewOnScreen 0, 0)</span>
<a name="line-45"></a><span class='hs-comment'>-- > , (viewOnScreen 1, controlMask)</span>
<a name="line-46"></a><span class='hs-comment'>-- > , (greedyView, controlMask .|. shiftMask) ]</span>
<a name="line-47"></a><span class='hs-comment'>-- > ]</span>
<a name="line-48"></a><span class='hs-comment'>--</span>
<a name="line-49"></a><span class='hs-comment'>-- This will provide you with the following keybindings:</span>
<a name="line-50"></a><span class='hs-comment'>--</span>
<a name="line-51"></a><span class='hs-comment'>-- * modkey + 1-0:</span>
<a name="line-52"></a><span class='hs-comment'>-- Switch to workspace 1-0 on screen 0</span>
<a name="line-53"></a><span class='hs-comment'>--</span>
<a name="line-54"></a><span class='hs-comment'>-- * modkey + control + 1-0:</span>
<a name="line-55"></a><span class='hs-comment'>-- Switch to workspace 1-0 on screen 1</span>
<a name="line-56"></a><span class='hs-comment'>--</span>
<a name="line-57"></a><span class='hs-comment'>-- * modkey + control + shift + 1-0:</span>
<a name="line-58"></a><span class='hs-comment'>-- Default greedyView behaviour</span>
<a name="line-59"></a><span class='hs-comment'>--</span>
<a name="line-60"></a><span class='hs-comment'>--</span>
<a name="line-61"></a><span class='hs-comment'>-- A more basic version inside the default keybindings would be:</span>
<a name="line-62"></a><span class='hs-comment'>--</span>
<a name="line-63"></a><span class='hs-comment'>-- > , ((modm .|. controlMask, xK_1) windows (viewOnScreen 0 "1"))</span>
<a name="line-64"></a><span class='hs-comment'>--</span>
<a name="line-65"></a><span class='hs-comment'>-- where 0 is the first screen and "1" the workspace with the tag "1".</span>
<a name="line-66"></a><span class='hs-comment'>--</span>
<a name="line-67"></a><span class='hs-comment'>-- For detailed instructions on editing your key bindings, see</span>
<a name="line-68"></a><span class='hs-comment'>-- "XMonad.Doc.Extending#Editing_key_bindings".</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="onScreen"></a><span class='hs-comment'>-- | Switch to the (hidden) workspace with index 'i' on the screen 'sc'.</span>
<a name="line-71"></a><span class='hs-comment'>-- A default function (for example 'view' or 'greedyView') will be run if 'sc' is</span>
<a name="line-72"></a><span class='hs-comment'>-- the current screen, no valid screen id or workspace 'i' is already visible.</span>
<a name="line-73"></a><span class='hs-definition'>onScreen</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>sid</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-74"></a> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ default action</span>
<a name="line-75"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>sid</span> <span class='hs-comment'>-- ^ screen id</span>
<a name="line-76"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-comment'>-- ^ index of the workspace</span>
<a name="line-77"></a> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span> <span class='hs-comment'>-- ^ current stack</span>
<a name="line-78"></a> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span>
<a name="line-79"></a><span class='hs-definition'>onScreen</span> <span class='hs-varid'>defFunc</span> <span class='hs-varid'>sc</span> <span class='hs-varid'>i</span> <span class='hs-varid'>st</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>defFunc</span> <span class='hs-varid'>i</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-80"></a> <span class='hs-comment'>-- on unfocused current screen</span>
<a name="line-81"></a> <span class='hs-varid'>guard</span> <span class='hs-varop'>$</span> <span class='hs-varid'>screen</span> <span class='hs-layout'>(</span><span class='hs-varid'>current</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>sc</span>
<a name="line-82"></a> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>find</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>i</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>tag</span> <span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>hidden</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span>
<a name="line-83"></a> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>find</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>sc</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>screen</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>screens</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span>
<a name="line-84"></a> <span class='hs-varid'>o</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>find</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>sc</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>screen</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>visible</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span>
<a name="line-85"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>newScreen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span> <span class='hs-layout'>{</span> <span class='hs-varid'>workspace</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span> <span class='hs-layout'>}</span>
<a name="line-86"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>st</span> <span class='hs-layout'>{</span> <span class='hs-varid'>visible</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>newScreen</span> <span class='hs-conop'>:</span> <span class='hs-varid'>deleteBy</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>`on`</span> <span class='hs-varid'>screen</span><span class='hs-layout'>)</span> <span class='hs-varid'>newScreen</span> <span class='hs-layout'>(</span><span class='hs-varid'>visible</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span>
<a name="line-87"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hidden</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>workspace</span> <span class='hs-varid'>o</span> <span class='hs-conop'>:</span> <span class='hs-varid'>deleteBy</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varop'>`on`</span> <span class='hs-varid'>tag</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>hidden</span> <span class='hs-varid'>st</span><span class='hs-layout'>)</span>
<a name="line-88"></a> <span class='hs-layout'>}</span>
<a name="line-89"></a>
<a name="line-90"></a><a name="greedyViewOnScreen"></a><span class='hs-comment'>-- | Switch to workspace 'i' on screen 'sc'. If 'i' is visible use 'greedyView'</span>
<a name="line-91"></a><span class='hs-comment'>-- to switch the current workspace with workspace 'i'.</span>
<a name="line-92"></a><span class='hs-definition'>greedyViewOnScreen</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>sid</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-93"></a> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>sid</span> <span class='hs-comment'>-- ^ screen id</span>
<a name="line-94"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-comment'>-- ^ index of the workspace</span>
<a name="line-95"></a> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span> <span class='hs-comment'>-- ^ current stack</span>
<a name="line-96"></a> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span>
<a name="line-97"></a><span class='hs-definition'>greedyViewOnScreen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>onScreen</span> <span class='hs-varid'>greedyView</span>
<a name="line-98"></a>
<a name="line-99"></a><a name="viewOnScreen"></a><span class='hs-comment'>-- | Switch to workspace 'i' on screen 'sc'. If 'i' is visible use 'view' to</span>
<a name="line-100"></a><span class='hs-comment'>-- switch focus to the workspace 'i'.</span>
<a name="line-101"></a><span class='hs-definition'>viewOnScreen</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>sid</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-102"></a> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>sid</span> <span class='hs-comment'>-- ^ screen id</span>
<a name="line-103"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-comment'>-- ^ index of the workspace</span>
<a name="line-104"></a> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span> <span class='hs-comment'>-- ^ current stack</span>
<a name="line-105"></a> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span>
<a name="line-106"></a><span class='hs-definition'>viewOnScreen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>onScreen</span> <span class='hs-varid'>view</span>
<a name="line-107"></a>
<a name="line-108"></a><a name="onlyOnScreen"></a><span class='hs-comment'>-- | Switch to workspace 'i' on screen 'sc'. If 'i' is visible do nothing.</span>
<a name="line-109"></a><span class='hs-definition'>onlyOnScreen</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>sid</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>i</span><span class='hs-layout'>)</span>
<a name="line-110"></a> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>sid</span> <span class='hs-comment'>-- ^ screen id</span>
<a name="line-111"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-comment'>-- ^ index of the workspace</span>
<a name="line-112"></a> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span> <span class='hs-comment'>-- ^ current stack</span>
<a name="line-113"></a> <span class='hs-keyglyph'>-></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'>sid</span> <span class='hs-varid'>sd</span>
<a name="line-114"></a><span class='hs-definition'>onlyOnScreen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>onScreen</span> <span class='hs-varid'>doNothing</span>
<a name="line-115"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>doNothing</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>st</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>st</span>
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