jodd.csselly.selector.PseudoClassSelector Maven / Gradle / Ivy
Show all versions of jodd-all Show documentation
// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.csselly.selector;
import jodd.csselly.CSSellyException;
import jodd.csselly.Selector;
import jodd.lagarto.dom.Node;
import jodd.lagarto.dom.NodeFilter;
import jodd.lagarto.dom.NodeListFilter;
import jodd.util.ClassUtil;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Pseudo class selector.
* A pseudo-class always consists of a "colon" (:) followed by
* the name of the pseudo-class and optionally by a value between parentheses.
*
* Selectors introduces the concept of structural pseudo-classes to permit
* selection based on extra information that lies in the document tree
* but cannot be represented by other simple selectors or combinators.
*
* Standalone text and other non-element nodes are not counted when calculating
* the position of an element in the list of children of its parent.
* When calculating the position of an element in the list of children
* of its parent, the index numbering starts at 1.
*/
public class PseudoClassSelector extends Selector implements NodeFilter, NodeListFilter {
protected static final Map PSEUDO_CLASS_MAP;
static {
PSEUDO_CLASS_MAP = new HashMap<>(26);
registerPseudoClass(PseudoClass.EMPTY.class);
registerPseudoClass(PseudoClass.FIRST_CHILD.class);
registerPseudoClass(PseudoClass.FIRST_OF_TYPE.class);
registerPseudoClass(PseudoClass.LAST_CHILD.class);
registerPseudoClass(PseudoClass.LAST_OF_TYPE.class);
registerPseudoClass(PseudoClass.ONLY_CHILD.class);
registerPseudoClass(PseudoClass.ONLY_OF_TYPE.class);
registerPseudoClass(PseudoClass.ROOT.class);
registerPseudoClass(PseudoClass.FIRST.class);
registerPseudoClass(PseudoClass.LAST.class);
registerPseudoClass(PseudoClass.BUTTON.class);
registerPseudoClass(PseudoClass.CHECKBOX.class);
registerPseudoClass(PseudoClass.FILE.class);
registerPseudoClass(PseudoClass.IMAGE.class);
registerPseudoClass(PseudoClass.INPUT.class);
registerPseudoClass(PseudoClass.HEADER.class);
registerPseudoClass(PseudoClass.PARENT.class);
registerPseudoClass(PseudoClass.PASSWORD.class);
registerPseudoClass(PseudoClass.RADIO.class);
registerPseudoClass(PseudoClass.RESET.class);
registerPseudoClass(PseudoClass.SELECTED.class);
registerPseudoClass(PseudoClass.CHECKED.class);
registerPseudoClass(PseudoClass.SUBMIT.class);
registerPseudoClass(PseudoClass.TEXT.class);
registerPseudoClass(PseudoClass.EVEN.class);
registerPseudoClass(PseudoClass.ODD.class);
}
/**
* Registers pseudo class.
*/
public static void registerPseudoClass(final Class pseudoClassType) {
PseudoClass pseudoClass;
try {
pseudoClass = ClassUtil.newInstance(pseudoClassType);
} catch (Exception ex) {
throw new CSSellyException(ex);
}
PSEUDO_CLASS_MAP.put(pseudoClass.getPseudoClassName(), pseudoClass);
}
/**
* Lookups pseudo class for given pseudo class name.
*/
public static PseudoClass lookupPseudoClass(final String pseudoClassName) {
PseudoClass pseudoClass = PSEUDO_CLASS_MAP.get(pseudoClassName);
if (pseudoClass == null) {
throw new CSSellyException("Unsupported pseudo class: " + pseudoClassName);
}
return pseudoClass;
}
// ---------------------------------------------------------------- selector
protected final PseudoClass pseudoClass;
public PseudoClassSelector(final String pseudoClassName) {
super(Type.PSEUDO_CLASS);
this.pseudoClass = lookupPseudoClass(pseudoClassName.trim());
}
/**
* Returns {@link PseudoClass pseudo class} value.
*/
public PseudoClass getPseudoClass() {
return pseudoClass;
}
/**
* Matches node to this selector.
*/
@Override
public boolean accept(final Node node) {
return pseudoClass.match(node);
}
/**
* Accepts node within selected results. Invoked after results are matched.
*/
@Override
public boolean accept(final List currentResults, final Node node, final int index) {
return pseudoClass.match(currentResults, node, index);
}
}