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<title>src/Happstack/Server/HSP/HTML.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- | support for using HSP+Happstack for rendering HTML</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE FlexibleInstances, FlexibleContexts, QuasiQuotes, TypeFamilies, OverloadedStrings #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# OPTIONS_GHC -fno-warn-orphans #-}</span>
<a name="line-4"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Happstack</span><span class='hs-varop'>.</span><span class='hs-conid'>Server</span><span class='hs-varop'>.</span><span class='hs-conid'>HSP</span><span class='hs-varop'>.</span><span class='hs-conid'>HTML</span>
<a name="line-5"></a> <span class='hs-layout'>(</span> <span class='hs-varid'>defaultTemplate</span>
<a name="line-6"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-7"></a>
<a name="line-8"></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-varop'>.</span><span class='hs-conid'>Trans</span> <span class='hs-layout'>(</span><span class='hs-conid'>MonadIO</span><span class='hs-conid'>()</span><span class='hs-layout'>,</span> <span class='hs-varid'>liftIO</span><span class='hs-layout'>)</span>
<a name="line-9"></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-layout'>(</span><span class='hs-varop'><></span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-10"></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'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>T</span>
<a name="line-11"></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'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span><span class='hs-varop'>.</span><span class='hs-conid'>Builder</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>TL</span>
<a name="line-12"></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'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>TL</span>
<a name="line-13"></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'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>TL</span>
<a name="line-14"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Lazy</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</span><span class='hs-layout'>)</span>
<a name="line-15"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Language</span><span class='hs-varop'>.</span><span class='hs-conid'>Haskell</span><span class='hs-varop'>.</span><span class='hs-conid'>HSX</span><span class='hs-varop'>.</span><span class='hs-conid'>QQ</span> <span class='hs-layout'>(</span><span class='hs-varid'>hsx</span><span class='hs-layout'>)</span>
<a name="line-16"></a>
<a name="line-17"></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-18"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Happstack</span><span class='hs-varop'>.</span><span class='hs-conid'>Server</span>
<a name="line-19"></a> <span class='hs-layout'>(</span> <span class='hs-conid'>ToMessage</span><span class='hs-layout'>(</span><span class='hs-varid'>toMessage</span><span class='hs-layout'>,</span> <span class='hs-varid'>toContentType</span><span class='hs-layout'>,</span> <span class='hs-varid'>toResponse</span><span class='hs-layout'>)</span>
<a name="line-20"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Response</span>
<a name="line-21"></a> <span class='hs-layout'>)</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>HSP</span>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>HSP</span><span class='hs-varop'>.</span><span class='hs-conid'>HTML4</span>
<a name="line-25"></a>
<a name="line-26"></a><a name="instance%20ToMessage%20(Maybe%20XMLMetaData,%20XML)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>XMLMetaData</span><span class='hs-layout'>,</span> <span class='hs-conid'>XML</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-27"></a> <span class='hs-varid'>toContentType</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>md</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span><span class='hs-varop'>.</span><span class='hs-varid'>encodeUtf8</span> <span class='hs-varop'>$</span> <span class='hs-conid'>TL</span><span class='hs-varop'>.</span><span class='hs-varid'>toStrict</span> <span class='hs-layout'>(</span><span class='hs-varid'>contentType</span> <span class='hs-varid'>md</span><span class='hs-layout'>)</span>
<a name="line-28"></a> <span class='hs-varid'>toContentType</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"text/html;charset=utf-8"</span>
<a name="line-29"></a>
<a name="line-30"></a> <span class='hs-varid'>toMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>XMLMetaData</span> <span class='hs-layout'>(</span><span class='hs-varid'>showDt</span><span class='hs-layout'>,</span> <span class='hs-varid'>dt</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>pr</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>xml</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-31"></a> <span class='hs-conid'>TL</span><span class='hs-varop'>.</span><span class='hs-varid'>encodeUtf8</span> <span class='hs-varop'>$</span> <span class='hs-conid'>TL</span><span class='hs-varop'>.</span><span class='hs-varid'>toLazyText</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>showDt</span> <span class='hs-keyword'>then</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>TL</span><span class='hs-varop'>.</span><span class='hs-varid'>fromLazyText</span> <span class='hs-varid'>dt</span><span class='hs-layout'>)</span> <span class='hs-varop'><></span><span class='hs-layout'>)</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>id</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>pr</span> <span class='hs-varid'>xml</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-32"></a>
<a name="line-33"></a> <span class='hs-varid'>toMessage</span> <span class='hs-layout'>(</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>,</span> <span class='hs-varid'>xml</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-34"></a> <span class='hs-conid'>TL</span><span class='hs-varop'>.</span><span class='hs-varid'>encodeUtf8</span> <span class='hs-layout'>(</span><span class='hs-varid'>renderAsHTML</span> <span class='hs-varid'>xml</span><span class='hs-layout'>)</span>
<a name="line-35"></a>
<a name="line-36"></a>
<a name="line-37"></a><a name="instance%20ToMessage%20XML"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToMessage</span> <span class='hs-conid'>XML</span> <span class='hs-keyword'>where</span>
<a name="line-38"></a> <span class='hs-varid'>toContentType</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"text/html;charset=utf-8"</span>
<a name="line-39"></a> <span class='hs-varid'>toMessage</span> <span class='hs-varid'>xml</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>toMessage</span> <span class='hs-layout'>(</span><span class='hs-varid'>html4Strict</span><span class='hs-layout'>,</span> <span class='hs-varid'>xml</span><span class='hs-layout'>)</span>
<a name="line-40"></a>
<a name="line-41"></a>
<a name="line-42"></a><a name="defaultTemplate"></a><span class='hs-comment'>-- | A generic webpage template</span>
<a name="line-43"></a><span class='hs-definition'>defaultTemplate</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span> <span class='hs-conid'>XMLGenerator</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>EmbedAsChild</span> <span class='hs-varid'>m</span> <span class='hs-varid'>headers</span>
<a name="line-44"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>EmbedAsChild</span> <span class='hs-varid'>m</span> <span class='hs-varid'>body</span><span class='hs-layout'>,</span> <span class='hs-conid'>StringType</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>~</span> <span class='hs-conid'>Text</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span>
<a name="line-45"></a> <span class='hs-conid'>TL</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-comment'>-- ^ text to use in \<title\> tag</span>
<a name="line-46"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>headers</span> <span class='hs-comment'>-- ^ extra headers to insert in \<head\> tag. Use @()@ if none.</span>
<a name="line-47"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>body</span> <span class='hs-comment'>-- ^ content to put between the \<body\> tags.</span>
<a name="line-48"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>XMLType</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-49"></a><span class='hs-definition'>defaultTemplate</span> <span class='hs-varid'>title</span> <span class='hs-varid'>headers</span> <span class='hs-varid'>body</span> <span class='hs-keyglyph'>=</span>
<a name="line-50"></a> <span class='hs-varid'>unXMLGenT</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>hsx</span><span class='hs-keyglyph'>|</span>
<a name="line-51"></a> <span class='hs-varop'><</span><span class='hs-varid'>html</span><span class='hs-varop'>></span>
<a name="line-52"></a> <span class='hs-varop'><</span><span class='hs-varid'>head</span><span class='hs-varop'>></span>
<a name="line-53"></a> <span class='hs-varop'><</span><span class='hs-varid'>title</span><span class='hs-varop'>><%</span> <span class='hs-varid'>title</span> <span class='hs-varop'>%></</span><span class='hs-varid'>title</span><span class='hs-varop'>></span>
<a name="line-54"></a> <span class='hs-varop'><%</span> <span class='hs-varid'>headers</span> <span class='hs-varop'>%></span>
<a name="line-55"></a> <span class='hs-varop'></</span><span class='hs-varid'>head</span><span class='hs-varop'>></span>
<a name="line-56"></a> <span class='hs-varop'><</span><span class='hs-varid'>body</span><span class='hs-varop'>></span>
<a name="line-57"></a> <span class='hs-varop'><%</span> <span class='hs-varid'>body</span> <span class='hs-varop'>%></span>
<a name="line-58"></a> <span class='hs-varop'></</span><span class='hs-varid'>body</span><span class='hs-varop'>></span>
<a name="line-59"></a> <span class='hs-varop'></</span><span class='hs-varid'>html</span><span class='hs-varop'>></span>
<a name="line-60"></a> <span class='hs-keyglyph'>|</span><span class='hs-keyglyph'>]</span>
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