Some issues detected on the last 2010_0 release

Hi,
Here are some possible problems I've detected on the CSS Validator:

1. If a CSS3 attribute selector has a prefix, the validator doesn't 
recognize it. Ex:
       @namespace foo "http://www.example.com";
       *[foo|att=val] { color: blue }

2. Validating each of  the 2 properties below will result in a NPE (wich 
is represented as Parse Error [empty string]):
       text-shadow: 0.1em 0.1em rgba(0, 0, 0, 0.5);
       box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.5);

I believe the cause is that function "rgba" is not recognized as valid 
COLOR values.

The next property fails with a ClassCastException. It should give the 
error "0 is not a color value ":
  box-shadow: 3px 3px 5px 0;

I believe both problems can be solved if the code from 
org.w3c.css.properties.css1.CssColor will be used to validate the COLOR 
part in org.w3c.css.properties.css3.CssBoxShadow.java and 
org.w3c.css.properties.css3.CssBoxShadow.java

3. Resource CSS3Properties.properties has an invalid entry:
      text-overflow : org.w3c.css.properties.css3.CssTextOverflowCSS3

I think it should be:
      text-overflow : org.w3c.css.properties.css3.CssTextOverflow

4. in org.w3c.css.parser.CssPropertyFactory, whenever throwing a  
"noexistence" exception the profile should also be passed through 
translations :
    "pfsOk.toString()" replaced with 
"ac.getMsg().getString(pfsOk.toString())"

5. org.w3c.css.properties.css1.CssBackgroundMob. The NULL check from 
line 121 should be moved before line 117 otherwise a NPE could arrise.

6.In  org.w3c.css.util.ApplContext.isNamespaceDefined(URL, String), 
reference "namespaces" can be null (is lazy created on method 
"setNamespace") so the call  "namespaces.get(url)" can throw a NPE.

Suggestions :

1. In class org.w3c.css.css.StyleSheetParser a new parse method over a 
reader can be useful :
        public void parse(ApplContext ac, Reader inputReader, URL url, 
String kind, String media, int origin)

2. In class org.w3c.css.parser.CssFouffa a new constructor over a reader 
can be useful :
       public CssFouffa(ApplContext ac, Reader reader,  URL file, int 
beginLine)

3. In org.w3c.css.parser.CssFouffa.handleImport(URL url, String file, 
boolean is_url, AtRuleMedia media), the following block is a problem if 
you invoke the validator for local CSSs:

     //if it's not permitted to import... (direct input)
     if (url.getProtocol().equals("file")) {
         ac.getFrame().addWarning("unsupported-import");
         return;
     }

Hope it helps,
Alex