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HOWTO.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-fr" xml:lang="en-fr">
<head>
<title>CSS Validator Project</title>
<link href="style/page.css" type="text/css" rel="STYLESHEET" />
<meta name="ROBOTS" content="NOINDEX, NOFOLLOW" />
<link rel="STYLESHEET" title="default" media="screen" href="style/general.css" type="text/css" />
<meta name="Generator" content="*emacs: emacs-css" />
<meta name="ROBOTS" content="NOINDEX, NOFOLLOW" />
</head>
<body>
<a class="left" href="http://www.w3.org"><img
src="http://www.w3.org/Icons/w3c_home" alt="w3c" border="0" /></a>
<a class="right" href="http://www.w3.org/Jigsaw/"><img
src="http://jigsaw.w3.org/Icons/jigpower.gif" alt="Jigsaw Powered"
border="0" width="94" height="52" /></a>
<br />
<div class="t1">CSS</div>
<div class="t2">Validator</div>
<h1 class="center">CSS Validator version 2.0 :
How to add CSS properties in this validator ?</h1>
<p>In first, you should create your properties.</p>
<p>To do this, You should extend the class CSS.Properties.CssProperty. If you have
some macros, see <a href="docs/org.w3c.css.aural.ACssCueBefore.html">CSS.Properties.ACssCueBefore</a> for an example.
</p>
<p>An example for the name of a property :
<code>CSS2.Printing.CssPageBreakBefore</code>
</p>
<p>Then, you should implements the interface
<a href="docs/org.w3c.css.parser.CssStyle.html">org.w3c.css.parser.CssStyle</a>. For an example, you can see
<a href="docs/org.w3c.css.aural.ACssStyle.html">org.w3c.css.aural.ACssStyle</a>. In this
example, I added aural cascading style sheet to cascading style sheet level 1,
so I extends the style Css1Style that implements the CssStyle. Be careful, you
must have a public constructor with no parameters in your CssStyle !
</p>
<p>An example for the name of your style :
<code>CSS2.Printing.PCssStyle</code>
</p>
<p>Create two configuration properties file :</p>
<ol>
<li>Config.properties
<pre>
# My parser config :
style : CSS2.Printing.PCssStyle
properties: CSS2Printing.properties
# Note : the file CSS2Printing.properties should be in your style directory.
# Activate the CSS2 parser
extended-parser : true
</pre></li>
<li>CS2Printing.properties
<pre>
# A property
# Note : if you want to reuse CSS1 properties, you should add all properties !
# For an example, see <a
href="org/w3c/css/aural/AuralProperties.properties">AuralProperties.properties</a>
page-break-before : CSS2.Printing.CssPageBreakBefore
</pre></li>
</ol>
<p>Now you are ready to parse your properties.</p>
<p>Finally, You should say where the parser can find your properties. This is
a sample code to parse your owns properties :</p>
<pre>
<span class="keyword">import</span> <span class="reference">java</span>.<span class="reference">util</span>.<span class="type">Properties</span>;
<span class="keyword">import</span> <span class="reference">java</span>.<span class="reference">net</span>.<span class="type">URL</span>;
<span class="keyword">import</span> <span class="reference">org</span>.<span class="reference">w3c</span>.<span class="reference">css</span>.<span class="reference">parser</span>.<span class="type">CssFouffa</span>;
<span class="keyword">import</span> <span class="reference">org</span>.<span class="reference">w3c</span>.<span class="reference">css</span>.<span class="reference">css</span>.<span class="type">StyleSheetParser</span>;
<span class="keyword">import</span> <span class="reference">org</span>.<span class="reference">w3c</span>.<span class="reference">css</span>.<span class="reference">css</span>.<span class="type">StyleSheetOrigin</span>;
<span class="keyword">import</span> <span class="reference">CSS2</span>.<span class="reference">Printing</span>.<span class="type">PCssStyle</span>;
<span class="keyword">class</span> <span class="function-name">MyStartUp</span> {
<span class="reference">public</span> <span class="type">static</span> <span class="type">void</span> <span class="function-name">main</span>(<span class="type">String</span>[] <span class="variable-name">args</span>) {
<span class="type">Properties</span> <span class="variable-name">properties</span> = <span class="keyword">new</span> <span class="type">Properties</span>();
<span class="keyword">try</span> {
<span class="type">Properties</span> <span class="variable-name">config</span> = <span class="keyword">new</span> <span class="type">Properties</span>();
<span class="comment">// try to load the file
</span> <span class="type">URL</span> <span class="variable-name">url</span> = PCssStyle.<span class="keyword">class</span>.getResource("<span class="string">CSS2Printing.properties</span>");
config.load(url.openStream());
<span class="comment">// set the parser
</span> CssFouffa.loadConfig(config);
} <span class="keyword">catch</span> (<span class="type">Exception</span> <span class="variable-name">e</span>) {
System.err.println("<span class="string">MyStartUp: couldn't load properties</span>");
System.err.println("<span class="string"> </span>" + e.toString() );
System.exit(1);
}
<span class="comment">// now the parser is ready !
</span>
<span class="comment">// create a parser
</span> <span class="type">StyleSheetParser</span> <span class="variable-name">parser</span> = <span class="keyword">new</span> <span class="type">StyleSheetParser</span>();
<span class="comment">// parse an URL
</span> parser.parseURL(<span class="keyword">new</span> <span class="type">URL</span>("<span class="string">http://www.w3.org/Style</span>"), StyleSheetOrigin.AUTHOR);
<span class="comment">// output the result
</span> <span class="type">StyleSheetGenerator</span> <span class="variable-name">style</span> =
<span class="keyword">new</span> <span class="type">StyleSheetGenerator</span>("<span class="string">My example</span>", <span class="comment">// title
</span> parser.getStyleSheet(), <span class="comment">// get the style sheet
</span> "<span class="string">text</span>"); <span class="comment">// output format
</span> style.print(System.out);
}
}
</pre>
<p>There is an example for a new package for CSS2. In this example, I reuse
Aural properties.
</p>
<hr class="large" />
<img src="images/mwcss.gif" alt="made with CSS" />
<address class="right"><a href="Email.html">validator-css</a></address>
</body>
</html>