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4.4.10. XCSS File Format
Cross-site Cascading Style Sheet (XCSS) files are the core of RichFaces component skinnability. XCSS is XML-formatted CSS that extends the skinning process. RichFaces parses the XCSS file containing all look and feel parameters of a particular component and compiles the information into a standard CSS file that can be recognized by a web browser.
The XCSS file contains CSS properties and skin parameter mappings. Mapping a CSS selector to a skin parameter can be done with
< u:selector > and < u:style> XML tags, which define the mapping structure, as in the following example:
During processing, this code will be parsed and assembled into a standard CSS format, like so:
The
name attribute of <u:selector> defines the CSS selector, while the name attribute of the <u:style> tag defines the skin constant that is mapped to a CSS property. You can also use the value attribute of the <u:style> tag to assign a value to a CSS property.
CSS selectors with identical skin properties can be included in a comma-separated list:
... <u:selector name=".rich-ordering-control-disabled, .rich-ordering-control-top, .rich-ordering-control-bottom, .rich-ordering-control-up, .rich-ordering-control-down"> <u:style name="border-color" skin="tableBorderColor" /> </u:selector> ...
...
<u:selector name=".rich-ordering-control-disabled, .rich-ordering-control-top, .rich-ordering-control-bottom, .rich-ordering-control-up, .rich-ordering-control-down">
<u:style name="border-color" skin="tableBorderColor" />
</u:selector>
...