<?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/StringProp.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.StringProp</span> <a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Nicolas Pouillard 2009</span> <a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see LICENSE)</span> <a name="line-6"></a><span class='hs-comment'>--</span> <a name="line-7"></a><span class='hs-comment'>-- Maintainer : Nicolas Pouillard <nicolas.pouillard@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><span class='hs-comment'>-- Internal utility functions for storing Strings with the root window.</span> <a name="line-12"></a><span class='hs-comment'>--</span> <a name="line-13"></a><span class='hs-comment'>-- Used for global state like IORefs with string keys, but more latency,</span> <a name="line-14"></a><span class='hs-comment'>-- persistent between xmonad restarts.</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'>Util</span><span class='hs-varop'>.</span><span class='hs-conid'>StringProp</span> <span class='hs-layout'>(</span> <a name="line-17"></a> <span class='hs-conid'>StringProp</span><span class='hs-layout'>,</span> <a name="line-18"></a> <span class='hs-varid'>getStringProp</span><span class='hs-layout'>,</span> <span class='hs-varid'>setStringProp</span><span class='hs-layout'>,</span> <a name="line-19"></a> <span class='hs-varid'>getStringListProp</span><span class='hs-layout'>,</span> <span class='hs-varid'>setStringListProp</span><span class='hs-layout'>,</span> <a name="line-20"></a> <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-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-layout'>(</span><span class='hs-varid'>liftM</span><span class='hs-layout'>)</span> <a name="line-24"></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'><$></span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>String</span> <span class='hs-layout'>(</span><span class='hs-varid'>castCCharToChar</span><span class='hs-layout'>,</span><span class='hs-varid'>castCharToCChar</span><span class='hs-layout'>)</span> <a name="line-26"></a> <a name="line-27"></a><a name="StringProp"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>StringProp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span> <a name="line-28"></a> <a name="line-29"></a><a name="withStringProp"></a><span class='hs-definition'>withStringProp</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>MonadIO</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>StringProp</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Window</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Atom</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-varid'>b</span> <a name="line-30"></a><span class='hs-definition'>withStringProp</span> <span class='hs-varid'>prop</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-31"></a> <span class='hs-varid'>rootw</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>rootWindow</span> <span class='hs-varid'>dpy</span> <span class='hs-varop'>$</span> <span class='hs-varid'>defaultScreen</span> <span class='hs-varid'>dpy</span> <a name="line-32"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>internAtom</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>prop</span> <span class='hs-conid'>False</span> <a name="line-33"></a> <span class='hs-varid'>f</span> <span class='hs-varid'>rootw</span> <span class='hs-varid'>a</span> <a name="line-34"></a> <a name="line-35"></a><a name="setStringProp"></a><span class='hs-comment'>-- | Set the value of a string property.</span> <a name="line-36"></a><span class='hs-definition'>setStringProp</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>MonadIO</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>StringProp</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span> <a name="line-37"></a><span class='hs-definition'>setStringProp</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>prop</span> <span class='hs-varid'>string</span> <span class='hs-keyglyph'>=</span> <a name="line-38"></a> <span class='hs-varid'>withStringProp</span> <span class='hs-varid'>prop</span> <span class='hs-varid'>dpy</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>rootw</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <a name="line-39"></a> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>changeProperty8</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>rootw</span> <span class='hs-varid'>a</span> <span class='hs-varid'>a</span> <span class='hs-varid'>propModeReplace</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>castCharToCChar</span> <span class='hs-varid'>string</span> <a name="line-40"></a> <a name="line-41"></a><a name="getStringProp"></a><span class='hs-comment'>-- | Get the name of a string property and returns it as a 'Maybe'.</span> <a name="line-42"></a><span class='hs-definition'>getStringProp</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>MonadIO</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>StringProp</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span> <a name="line-43"></a><span class='hs-definition'>getStringProp</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>prop</span> <span class='hs-keyglyph'>=</span> <a name="line-44"></a> <span class='hs-varid'>withStringProp</span> <span class='hs-varid'>prop</span> <span class='hs-varid'>dpy</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>rootw</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <a name="line-45"></a> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>io</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getWindowProperty8</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>a</span> <span class='hs-varid'>rootw</span> <a name="line-46"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>castCCharToChar</span> <span class='hs-varop'><$></span> <span class='hs-varid'>p</span> <a name="line-47"></a> <a name="line-48"></a><a name="getStringListProp"></a><span class='hs-comment'>-- | Given a property name, returns its contents as a list. It uses the empty</span> <a name="line-49"></a><span class='hs-comment'>-- list as default value.</span> <a name="line-50"></a><span class='hs-definition'>getStringListProp</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>MonadIO</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>StringProp</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <a name="line-51"></a><span class='hs-definition'>getStringListProp</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>prop</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>words</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>getStringProp</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>prop</span> <a name="line-52"></a> <a name="line-53"></a><a name="setStringListProp"></a><span class='hs-comment'>-- | Given a property name and a list, sets the value of this property with</span> <a name="line-54"></a><span class='hs-comment'>-- the list given as argument.</span> <a name="line-55"></a><span class='hs-definition'>setStringListProp</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>MonadIO</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>StringProp</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span> <a name="line-56"></a><span class='hs-definition'>setStringListProp</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>prop</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>setStringProp</span> <span class='hs-varid'>dpy</span> <span class='hs-varid'>prop</span> <span class='hs-layout'>(</span><span class='hs-varid'>unwords</span> <span class='hs-varid'>str</span><span class='hs-layout'>)</span> </pre></body> </html>
