Two CSS rendering bugs [ From W3C CSS conformance suit ]

ismail (cartman) donmez voidcartman at yahoo.com
Fri Jan 17 15:15:32 GMT 2003 

While trying CSS conformance tests at w3.org. I found two bugs in css parser. 
And able to create two simple test-case for the issues.

According to http://www.w3.org/Style/CSS/Test/CSS1/current/test543.htm 
if an element's parent has a style you should ignore the children's style 
attribute and apply parent's style to it too. Here is a simple test case 
ripped from CSS-1 test suite :

*************************************************************************

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" 
"http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<TITLE>CSS1 Test Suite: 5.4.3 text-decoration</TITLE>
<META http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<META http-equiv="Content-Style-Type" content="text/css">
<STYLE type="text/css">
.one {text-decoration: underline;}
B.five {text-decoration: none;}
</STYLE>
</HEAD>
<BODY>
<P class="one">
The text in this element should be underlined.  The boldfaced text in this 
element <B class="five">should also be underlined</B>.  This is because the 
parent's underline will 'span' the boldfaced text, even if the inline element 
has no underline of its own.
</P>
</BODY>
</HTML>

*************************************************************************************
Here bold text should be underlined too because its parent has "one" style 
says underline so you must ignore class attribute for <b> tag .

And the second bug a similar behavior. You have to ignore color attribute for 
children if parent already has a color attribute. Here is the test case again 
ripped from css conformance suit.


***********************************************************************************

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" 
"http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<TITLE>CSS1 Test Suite: 5.4.3 text-decoration</TITLE>
<META http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</HEAD>
<BODY>
<P style="color: green;" class="one">
The underlining <SPAN style="color: blue;">in this sentence</SPAN> should be 
green, no matter what the <SPAN style="color: black;">text color may 
be</SPAN>.
</P>
</BODY>
</HTML>

****************************************************************************************

Regards , 
/ismail

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