org.xwiki.portlet.view
Class CSSStreamFilter

java.lang.Object
  org.xwiki.portlet.view.CSSStreamFilter

All Implemented Interfaces:

StreamFilter

public class CSSStreamFilter
extends Object
implements StreamFilter

Rewrites a CSS stream so that it can be used by a portlet in a portal page without affecting other portlets or the portal page itself. The following transformations are executed:

• Name-space all CSS selectors by prefixing them with a given string (e.g. the identifier of the portlet content container)
• Rename identifiers used in selectors to ensure their uniqueness inside the portal page
• Rewrite import URLs so that CSS style sheets are requested through the portlet

.

Version:

$Id: 9313f650c7e8a006c03603130b5bcd9eb833f4ad $

Constructor Summary

CSSStreamFilter(String namespace, URLRewriter urlRewriter)
Creates a new CSS stream filter that uses the given URL rewriter to transform import URLs and the given name-space to prevent style rules from affecting other portlets or the portal page itself.

Method Summary

void	filter(Reader reader, Writer writer) Filters the given character stream.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CSSStreamFilter

public CSSStreamFilter(String namespace,
                       URLRewriter urlRewriter)

Creates a new CSS stream filter that uses the given URL rewriter to transform import URLs and the given name-space to prevent style rules from affecting other portlets or the portal page itself.

Parameters:

namespace - the portlet name-space

urlRewriter - the object used to rewrite servlet URLs

Method Detail

filter

public void filter(Reader reader,
                   Writer writer)

Description copied from interface: StreamFilter

Filters the given character stream.

Specified by:

filter in interface StreamFilter

Parameters:

reader - the character stream to be filtered

writer - the resulting character stream