com.vaadin.sass.internal.visitor
Class ExtendNodeHandler

java.lang.Object
  com.vaadin.sass.internal.visitor.ExtendNodeHandler

public class ExtendNodeHandler
extends Object

Constructor Summary

ExtendNodeHandler()

Method Summary

static SelectorSet	createSelectorsForExtensions(Selector target, Iterable<Extension> extendsMap) Try to unify argument selector with each selector specified in an extend-clause.
static void	modifyTree(ScssContext context, Node node)
static Collection<Node>	traverse(ScssContext context, ExtendNode node)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtendNodeHandler

public ExtendNodeHandler()

Method Detail

traverse

public static Collection<Node> traverse(ScssContext context,
                                        ExtendNode node)
                                 throws Exception

Throws:

Exception

modifyTree

public static void modifyTree(ScssContext context,
                              Node node)
                       throws Exception

Throws:

Exception

createSelectorsForExtensions

public static SelectorSet createSelectorsForExtensions(Selector target,
                                                       Iterable<Extension> extendsMap)

Try to unify argument selector with each selector specified in an extend-clause. For each match found, add the enclosing block's selectors with substitutions (see examples below). Finally eliminates redundant selectors (a selector is redundant in a set if subsumed by another selector in the set). .a {...}; .b { @extend .a } ---> .b .a.b {...}; .c { @extend .a } ---> .b.c .a.b {...}; .c .c { @extend .a } ---> .c .b.c

Parameters:

target - the selector to match

extendsMap - mapping from the simple selector sequence of the extend-selector to an extending selector

Returns:

the generated selectors (may contain duplicates)