/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.
 */
package org.apache.axiom.dom.impl.mixin;

import static org.apache.axiom.dom.DOMExceptionUtil.newDOMException;

import org.apache.axiom.dom.DOMNSAwareNamedNode;
import org.apache.axiom.dom.NSUtil;
import org.apache.axiom.weaver.annotation.Mixin;
import org.w3c.dom.DOMException;

@Mixin
public abstract class DOMNSAwareNamedNodeMixin implements DOMNSAwareNamedNode {
    @Override
    public final String getLocalName() {
        return coreGetLocalName();
    }

    @Override
    public final String getNamespaceURI() {
        String namespaceURI = coreGetNamespaceURI();
        return namespaceURI.length() == 0 ? null : namespaceURI;
    }

    @Override
    public final String getPrefix() {
        String prefix = coreGetPrefix();
        return prefix.length() == 0 ? null : prefix;
    }

    @Override
    public final void setPrefix(String prefix) throws DOMException {
        if (prefix == null) {
            prefix = "";
        }
        if (coreGetNamespaceURI().length() == 0 && prefix.length() > 0) {
            throw newDOMException(DOMException.NAMESPACE_ERR);
        }
        NSUtil.validatePrefix(prefix);
        coreSetPrefix(prefix);
    }

    @Override
    public final String internalGetName() {
        String prefix = coreGetPrefix();
        String localName = coreGetLocalName();
        if (prefix.length() == 0) {
            return localName;
        } else {
            return prefix + ":" + localName;
        }
    }
}
