/*

   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.batik.css.engine.value;

import org.apache.batik.util.ParsedURL;
import org.w3c.dom.DOMException;

/**
 * This class provides a base implementation for the value factories.
 *
 * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
 * @version $Id: AbstractValueFactory.java 578680 2007-09-24 07:20:03Z cam $
 */
public abstract class AbstractValueFactory {
    
    /**
     * Returns the name of the property handled.
     */
    public abstract String getPropertyName();
    
    /**
     * Resolves an URI.
     */
    protected static String resolveURI(ParsedURL base, String value) {
        return new ParsedURL(base, value).toString();
    }

    /**
     * Creates a DOM exception, given an invalid identifier.
     */
    protected DOMException createInvalidIdentifierDOMException(String ident) {
        Object[] p = new Object[] { getPropertyName(), ident };
        String s = Messages.formatMessage("invalid.identifier", p);
        return new DOMException(DOMException.SYNTAX_ERR, s);
    }

    /**
     * Creates a DOM exception, given an invalid lexical unit type.
     */
    protected DOMException createInvalidLexicalUnitDOMException(short type) {
        Object[] p = new Object[] { getPropertyName(),
                                    new Integer(type) };
        String s = Messages.formatMessage("invalid.lexical.unit", p);
        return new DOMException(DOMException.NOT_SUPPORTED_ERR, s);
    }

    /**
     * Creates a DOM exception, given an invalid float type.
     */
    protected DOMException createInvalidFloatTypeDOMException(short t) {
        Object[] p = new Object[] { getPropertyName(), new Integer(t) };
        String s = Messages.formatMessage("invalid.float.type", p);
        return new DOMException(DOMException.INVALID_ACCESS_ERR, s);
    }

    /**
     * Creates a DOM exception, given an invalid float value.
     */
    protected DOMException createInvalidFloatValueDOMException(float f) {
        Object[] p = new Object[] { getPropertyName(), new Float(f) };
        String s = Messages.formatMessage("invalid.float.value", p);
        return new DOMException(DOMException.INVALID_ACCESS_ERR, s);
    }

    /**
     * Creates a DOM exception, given an invalid string type.
     */
    protected DOMException createInvalidStringTypeDOMException(short t) {
        Object[] p = new Object[] { getPropertyName(), new Integer(t) };
        String s = Messages.formatMessage("invalid.string.type", p);
        return new DOMException(DOMException.INVALID_ACCESS_ERR, s);
    }

    protected DOMException createMalformedLexicalUnitDOMException() {
        Object[] p = new Object[] { getPropertyName() };
        String s = Messages.formatMessage("malformed.lexical.unit", p);
        return new DOMException(DOMException.INVALID_ACCESS_ERR, s);
    }

    protected DOMException createDOMException() {
        Object[] p = new Object[] { getPropertyName() };
        String s = Messages.formatMessage("invalid.access", p);
        return new DOMException(DOMException.NOT_SUPPORTED_ERR, s);
    }
}
