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/*
 * Copyright 2010 Alibaba Group Holding Limited.
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * @(#)DOMAttrImpl.java   1.11 2000/08/16
 *
 */

package org.w3c.tidy;

import org.w3c.dom.DOMException;
import org.w3c.dom.Node;
import org.w3c.dom.TypeInfo;
import org.w3c.dom.UserDataHandler;

/**
 * DOMAttrImpl (c) 1998-2000 (W3C) MIT, INRIA, Keio University See Tidy.java for
 * the copyright notice. Derived from  HTML Tidy Release 4 Aug
 * 2000
 *
 * @author Dave Raggett 
 * @author Andy Quick  (translation to Java)
 * @version 1.11, 2000/08/16 Tidy Release 4 Aug 2000
 */

public class DOMAttrImpl extends DOMNodeImpl implements org.w3c.dom.Attr {

    protected AttVal avAdaptee;

    protected DOMAttrImpl(AttVal adaptee) {
        super(null); // must override all methods of DOMNodeImpl
        this.avAdaptee = adaptee;
    }

    /* --------------------- DOM ---------------------------- */

    @Override
    public String getNodeValue() throws DOMException {
        return getValue();
    }

    @Override
    public void setNodeValue(String nodeValue) throws DOMException {
        setValue(nodeValue);
    }

    @Override
    public String getNodeName() {
        return getName();
    }

    @Override
    public short getNodeType() {
        return org.w3c.dom.Node.ATTRIBUTE_NODE;
    }

    @Override
    public org.w3c.dom.Node getParentNode() {
        return null;
    }

    @Override
    public org.w3c.dom.NodeList getChildNodes() {
        // NOT SUPPORTED
        return null;
    }

    @Override
    public org.w3c.dom.Node getFirstChild() {
        // NOT SUPPORTED
        return null;
    }

    @Override
    public org.w3c.dom.Node getLastChild() {
        // NOT SUPPORTED
        return null;
    }

    @Override
    public org.w3c.dom.Node getPreviousSibling() {
        return null;
    }

    @Override
    public org.w3c.dom.Node getNextSibling() {
        return null;
    }

    @Override
    public org.w3c.dom.NamedNodeMap getAttributes() {
        return null;
    }

    @Override
    public org.w3c.dom.Document getOwnerDocument() {
        return null;
    }

    @Override
    public org.w3c.dom.Node insertBefore(org.w3c.dom.Node newChild, org.w3c.dom.Node refChild) throws DOMException {
        throw new DOMExceptionImpl(DOMException.NO_MODIFICATION_ALLOWED_ERR, "Not supported");
    }

    @Override
    public org.w3c.dom.Node replaceChild(org.w3c.dom.Node newChild, org.w3c.dom.Node oldChild) throws DOMException {
        throw new DOMExceptionImpl(DOMException.NO_MODIFICATION_ALLOWED_ERR, "Not supported");
    }

    @Override
    public org.w3c.dom.Node removeChild(org.w3c.dom.Node oldChild) throws DOMException {
        throw new DOMExceptionImpl(DOMException.NO_MODIFICATION_ALLOWED_ERR, "Not supported");
    }

    @Override
    public org.w3c.dom.Node appendChild(org.w3c.dom.Node newChild) throws DOMException {
        throw new DOMExceptionImpl(DOMException.NO_MODIFICATION_ALLOWED_ERR, "Not supported");
    }

    @Override
    public boolean hasChildNodes() {
        return false;
    }

    @Override
    public org.w3c.dom.Node cloneNode(boolean deep) {
        return null;
    }

    /** @see org.w3c.dom.Attr#getName */
    public String getName() {
        return avAdaptee.attribute;
    }

    /** @see org.w3c.dom.Attr#getSpecified */
    public boolean getSpecified() {
        return true;
    }

    /**
     * Returns value of this attribute. If this attribute has a null value, then
     * the attribute name is returned instead. Thanks to Brett Knights
     *  for this fix.
     *
     * @see org.w3c.dom.Attr#getValue
     */
    public String getValue() {
        return avAdaptee.value == null ? avAdaptee.attribute : avAdaptee.value;
    }

    /** @see org.w3c.dom.Attr#setValue */
    public void setValue(String value) {
        avAdaptee.value = value;
    }

    /** DOM2 - not implemented. */
    public org.w3c.dom.Element getOwnerElement() {
        return null;
    }

    public TypeInfo getSchemaTypeInfo() {
        return null;
    }

    public boolean isId() {
        return false;
    }

    @Override
    public short compareDocumentPosition(Node other) throws DOMException {
        return 0;
    }

    @Override
    public String getBaseURI() {
        return null;
    }

    @Override
    public Object getFeature(String feature, String version) {
        return null;
    }

    @Override
    public String getTextContent() throws DOMException {
        return null;
    }

    @Override
    public Object getUserData(String key) {
        return null;
    }

    @Override
    public boolean isDefaultNamespace(String namespaceURI) {
        return false;
    }

    @Override
    public boolean isEqualNode(Node arg) {
        return false;
    }

    @Override
    public boolean isSameNode(Node other) {
        return false;
    }

    @Override
    public String lookupNamespaceURI(String prefix) {
        return null;
    }

    @Override
    public String lookupPrefix(String namespaceURI) {
        return null;
    }

    @Override
    public void setTextContent(String textContent) throws DOMException {
    }

    @Override
    public Object setUserData(String key, Object data, UserDataHandler handler) {
        return null;
    }
}