/**
* Get general sibling elements.
*
* @see <a href="http://www.w3.org/TR/css3-selectors/#general-sibling-combinators">General sibling
* combinator</a>
*/
private void getGeneralSiblingElements() {
for (Branch node : nodes) {
Branch n = DOMHelper.getNextSiblingElement(node);
while (n != null) {
if (selector.getTagName().equals(n.getName())
|| selector.getTagName().equals(Selector.UNIVERSAL_TAG)) {
result.add(n);
}
n = DOMHelper.getNextSiblingElement(n);
}
}
}
/**
* Get adjacent sibling elements.
*
* @see <a href="http://www.w3.org/TR/css3-selectors/#adjacent-sibling-combinators">Adjacent
* sibling combinator</a>
*/
private void getAdjacentSiblingElements() {
String tag = selector.getTagName();
for (Branch node : nodes) {
Branch n = DOMHelper.getNextSiblingElement(node);
if (n != null) {
if (tag.equals(n.getName()) || tag.equals(Selector.UNIVERSAL_TAG)) {
result.add(n);
}
}
}
}
private void getDescentantElements(Branch node) {
String tagName = selector.getTagName();
Iterator<Node> nodeIterator = node.nodeIterator();
while (nodeIterator.hasNext()) {
Node child = nodeIterator.next();
if (child.getNodeType() == org.w3c.dom.Node.ELEMENT_NODE) {
if (tagName.equals("*") || child.getName().equals(tagName)) {
result.add((Branch) child);
}
getDescentantElements((Branch) child);
}
}
}
/**
* Get child elements.
*
* @see <a href="http://www.w3.org/TR/css3-selectors/#child-combinators">Child combinators</a>
*/
private void getChildElements() {
String tag = selector.getTagName();
for (Branch node : nodes) {
Iterator<Node> nodeIterator = node.nodeIterator();
while (nodeIterator.hasNext()) {
Node child = nodeIterator.next();
if (child.getNodeType() != org.w3c.dom.Node.ELEMENT_NODE) {
continue;
}
if (tag.equals(child.getName()) || tag.equals(Selector.UNIVERSAL_TAG)) {
result.add((Branch) child);
}
}
}
}
@Override
public Set<Branch> check(Set<Branch> nodes) throws NodeSelectorException {
Assert.notNull(nodes, "nodes is null!");
this.nodes = nodes;
result = new LinkedHashSet<Branch>();
switch (selector.getCombinator()) {
case DESCENDANT:
getDescentantElements();
break;
case CHILD:
getChildElements();
break;
case ADJACENT_SIBLING:
getAdjacentSiblingElements();
break;
case GENERAL_SIBLING:
getGeneralSiblingElements();
break;
}
return result;
}