MozBorderRadiusSideProperty.java

/** 
 * This file Copyright (c) 2005-2008 Aptana, Inc. This program is
 * dual-licensed under both the Aptana Public License and the GNU General
 * Public license. You may elect to use one or the other of these licenses.
 * 
 * This program is distributed in the hope that it will be useful, but
 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
 * NONINFRINGEMENT. Redistribution, except as permitted by whichever of
 * the GPL or APL you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or modify this
 * program under the terms of the GNU General Public License,
 * Version 3, as published by the Free Software Foundation.  You should
 * have received a copy of the GNU General Public License, Version 3 along
 * with this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Aptana provides a special exception to allow redistribution of this file
 * with certain Eclipse Public Licensed code and certain additional terms
 * pursuant to Section 7 of the GPL. You may view the exception and these
 * terms on the web at http://www.aptana.com/legal/gpl/.
 * 
 * 2. For the Aptana Public License (APL), this program and the
 * accompanying materials are made available under the terms of the APL
 * v1.0 which accompanies this distribution, and is available at
 * http://www.aptana.com/legal/apl/.
 * 
 * You may view the GPL, Aptana's exception and additional terms, and the
 * APL in the file titled license.html at the root of the corresponding
 * plugin containing this source file.
 * 
 * Any modifications to this file must keep this entire header intact.
 */
package com.aptana.ide.editor.css.validator.properties;

import java.util.ArrayList;
import java.util.List;

import org.w3c.css.util.ApplContext;
import org.w3c.css.util.InvalidParamException;
import org.w3c.css.values.CssExpression;
import org.w3c.css.values.CssLength;
import org.w3c.css.values.CssNumber;
import org.w3c.css.values.CssValue;

/**
 * Superclass for "-moz-border-radius-*" properties.
 * @author Denis Denisenko
 */
public abstract class MozBorderRadiusSideProperty extends CustomCSSProperty
{
    
    /**
     * Values.
     */
    private final List<CssValue> values;

    /**
     * 
     * MozBorderRadiusSideProperty constructor.
     * 
     * @param propertyName - property name.
     */
    public MozBorderRadiusSideProperty(String propertyName)
    {
        super(propertyName);
        values = null;
    }

    /**
     * MozBorderRadiusSideProperty constructor.
     * 
     * @param propertyName - property name.
     * @param context - context.
     * @param expression - expression to create property from.
     * @param check - whether to check property value.
     * 
     * @throws InvalidParamException IF expression is invalid
     */
    public MozBorderRadiusSideProperty(String propertyName,
            ApplContext context, CssExpression expression, boolean check)
            throws InvalidParamException
    {
        super(propertyName);

        //checking the number of expressions. 
        if (check && expression.getCount() > 2) {
            throw new InvalidParamException("unrecognize", context); //$NON-NLS-1$
        }
        else if (check && expression.getCount() < 2) {
            throw new InvalidParamException("few-value", context); //$NON-NLS-1$
        }
        
        setByUser();

        values = new ArrayList<CssValue>();
        
        CssValue value1 = expression.getValue();
        CssValue value2 = expression.getNextValue();
        
        CssValue convertedValue1 = checkValue(value1, context);
        CssValue convertedValue2 = checkValue(value2, context);
        
        values.add(convertedValue1);
        values.add(convertedValue2);
             
        expression.next();
        expression.next();
    }

    /**
     * MozBorderRadiusSideProperty constructor.
     * 
     * @param propertyName - property name.
     * @param context - context.
     * @param expression - expression to create property from.
     * 
     * @throws InvalidParamException IF expression is invalid
     */
    public MozBorderRadiusSideProperty(String propertyName,
            ApplContext context, CssExpression expression)
            throws InvalidParamException
    {
        this(propertyName, context, expression, false);
    }

    /**
      * {@inheritDoc}
      */
    public Object get()
    {
        return values;
    }

    /**
     * Checks value and converts if needed.
     * @param value - value to check.
     * @param context - context.
     * 
     * @throws InvalidParamException IF check fails 
     * 
     * @return checked or converted value
     */
    private CssValue checkValue(CssValue value, ApplContext context) 
           throws InvalidParamException
    {
        if (value instanceof CssLength)
        {
            return value;
        }
        if (value instanceof CssNumber)
        {
            return ((CssNumber) value).getLength();
        }
        
        throw new InvalidParamException("value", value.toString(), //$NON-NLS-1$
                getPropertyNameNoMinus(), context);
    }
}