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21: <div class="t1">CSS</div>
22: <div class="t2">Validator</div>
23:
24: <h1 class="center">CSS Validator version 2.0 :
25: How to add CSS properties in this validator ?</h1>
26:
27: <p>In first, you should create your properties.</p>
28:
29: <p>To do this, You should extend the class CSS.Properties.CssProperty. If you have
30: some macros, see <a href="docs/org.w3c.css.aural.ACssCueBefore.html">CSS.Properties.ACssCueBefore</a> for an example.
31: </p>
32: <p>An example for the name of a property :
33: <code>CSS2.Printing.CssPageBreakBefore</code>
34: </p>
35: <p>Then, you should implements the interface
36: <a href="docs/org.w3c.css.parser.CssStyle.html">org.w3c.css.parser.CssStyle</a>. For an example, you can see
37: <a href="docs/org.w3c.css.aural.ACssStyle.html">org.w3c.css.aural.ACssStyle</a>. In this
38: example, I added aural cascading style sheet to cascading style sheet level 1,
39: so I extends the style Css1Style that implements the CssStyle. Be careful, you
40: must have a public constructor with no parameters in your CssStyle !
41: </p>
42: <p>An example for the name of your style :
43: <code>CSS2.Printing.PCssStyle</code>
44: </p>
45: <p>Create two configuration properties file :</p>
46: <ol>
47: <li>Config.properties
48: <pre>
49: # My parser config :
50: style : CSS2.Printing.PCssStyle
51: properties: CSS2Printing.properties
52: # Note : the file CSS2Printing.properties should be in your style directory.
53:
54: # Activate the CSS2 parser
55: extended-parser : true
56: </pre></li>
57: <li>CS2Printing.properties
58: <pre>
59: # A property
60: # Note : if you want to reuse CSS1 properties, you should add all properties !
61: # For an example, see <a
62: href="org/w3c/css/aural/AuralProperties.properties">AuralProperties.properties</a>
63: page-break-before : CSS2.Printing.CssPageBreakBefore
64: </pre></li>
65: </ol>
66:
67: <p>Now you are ready to parse your properties.</p>
68: <p>Finally, You should say where the parser can find your properties. This is
69: a sample code to parse your owns properties :</p>
70:
71: <pre>
72: <span class="keyword">import</span> <span class="reference">java</span>.<span class="reference">util</span>.<span class="type">Properties</span>;
73: <span class="keyword">import</span> <span class="reference">java</span>.<span class="reference">net</span>.<span class="type">URL</span>;
74:
75: <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>;
76: <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>;
77: <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>;
78:
79: <span class="keyword">import</span> <span class="reference">CSS2</span>.<span class="reference">Printing</span>.<span class="type">PCssStyle</span>;
80:
81: <span class="keyword">class</span> <span class="function-name">MyStartUp</span> {
82:
83: <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>) {
84:
85: <span class="type">Properties</span> <span class="variable-name">properties</span> = <span class="keyword">new</span> <span class="type">Properties</span>();
86: <span class="keyword">try</span> {
87: <span class="type">Properties</span> <span class="variable-name">config</span> = <span class="keyword">new</span> <span class="type">Properties</span>();
88:
89: <span class="comment">// try to load the file
90: </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>");
91:
92: config.load(url.openStream());
93:
94: <span class="comment">// set the parser
95: </span> CssFouffa.loadConfig(config);
96:
97: } <span class="keyword">catch</span> (<span class="type">Exception</span> <span class="variable-name">e</span>) {
98: System.err.println("<span class="string">MyStartUp: couldn't load properties</span>");
99: System.err.println("<span class="string"> </span>" + e.toString() );
100: System.exit(1);
101: }
102:
103: <span class="comment">// now the parser is ready !
104: </span>
105: <span class="comment">// create a parser
106: </span> <span class="type">StyleSheetParser</span> <span class="variable-name">parser</span> = <span class="keyword">new</span> <span class="type">StyleSheetParser</span>();
107:
108: <span class="comment">// parse an URL
109: </span> parser.parseURL(<span class="keyword">new</span> <span class="type">URL</span>("<span class="string">http://www.w3.org/Style</span>"), StyleSheetOrigin.AUTHOR);
110:
111: <span class="comment">// output the result
112: </span> <span class="type">StyleSheetGenerator</span> <span class="variable-name">style</span> =
113: <span class="keyword">new</span> <span class="type">StyleSheetGenerator</span>("<span class="string">My example</span>", <span class="comment">// title
114: </span> parser.getStyleSheet(), <span class="comment">// get the style sheet
115: </span> "<span class="string">text</span>"); <span class="comment">// output format
116: </span> style.print(System.out);
117: }
118: }
119:
120: </pre>
121:
122: <p>There is an example for a new package for CSS2. In this example, I reuse
123: Aural properties.
124: </p>
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