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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* 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.
*/
/* $Id$ */
package org.apache.fop.fo.properties;
import org.apache.fop.datatypes.CompoundDatatype;
import org.apache.fop.fo.FObj;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.expr.PropertyException;
/**
* Superclass for properties wrapping a LengthPair value
*/
public class LengthPairProperty extends Property implements CompoundDatatype {
private Property ipd;
private Property bpd;
/**
* Inner class for creating instances of LengthPairProperty
*/
public static class Maker extends CompoundPropertyMaker {
/**
* @param name name of property for which this Maker should be created
*/
public Maker(int propId) {
super(propId);
}
/**
* Create a new empty instance of LengthPairProperty.
* @return the new instance.
*/
public Property makeNewProperty() {
return new LengthPairProperty();
}
/**
* @see CompoundPropertyMaker#convertProperty
*/
public Property convertProperty(Property p, PropertyList propertyList, FObj fo)
throws PropertyException
{
if (p instanceof LengthPairProperty) {
return p;
}
return super.convertProperty(p, propertyList, fo);
}
}
/**
* @see org.apache.fop.datatypes.CompoundDatatype#setComponent(int, Property, boolean)
*/
public void setComponent(int cmpId, Property cmpnValue,
boolean bIsDefault) {
if (cmpId == CP_BLOCK_PROGRESSION_DIRECTION) {
bpd = cmpnValue;
} else if (cmpId == CP_INLINE_PROGRESSION_DIRECTION) {
ipd = cmpnValue;
}
}
/**
* @see org.apache.fop.datatypes.CompoundDatatype#getComponent(int)
*/
public Property getComponent(int cmpId) {
if (cmpId == CP_BLOCK_PROGRESSION_DIRECTION) {
return getBPD();
} else if (cmpId == CP_INLINE_PROGRESSION_DIRECTION) {
return getIPD();
} else {
return null; // SHOULDN'T HAPPEN
}
}
/**
* @return Property holding the ipd length
*/
public Property getIPD() {
return this.ipd;
}
/**
* @return Property holding the bpd length
*/
public Property getBPD() {
return this.bpd;
}
public String toString() {
return "LengthPair[" +
"ipd:" + getIPD().getObject() +
", bpd:" + getBPD().getObject() + "]";
}
/**
* @return this.lengthPair
*/
public LengthPairProperty getLengthPair() {
return this;
}
/**
* @return this.lengthPair cast as an Object
*/
public Object getObject() {
return this;
}
}
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