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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.fo.Constants;
import org.apache.fop.fo.FObj;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.expr.PropertyException;
/**
* Base class used for handling properties of the fo:space-before and
* fo:space-after variety. It is extended by org.apache.fop.fo.properties.GenericSpace,
* which is extended by many other properties.
*/
public class SpaceProperty extends LengthRangeProperty {
private Property precedence;
private Property conditionality;
/**
* Inner class used to create new instances of SpaceProperty
*/
public static class Maker extends CompoundPropertyMaker {
/**
* @param name name of the property whose Maker is to be created
*/
public Maker(int propId) {
super(propId);
}
/**
* Create a new empty instance of SpaceProperty.
* @return the new instance.
*/
public Property makeNewProperty() {
return new SpaceProperty();
}
/**
* @see CompoundPropertyMaker#convertProperty
*/
public Property convertProperty(Property p,
PropertyList propertyList,
FObj fo) throws PropertyException {
if (p instanceof SpaceProperty) {
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_PRECEDENCE) {
setPrecedence(cmpnValue, bIsDefault);
} else if (cmpId == CP_CONDITIONALITY) {
setConditionality(cmpnValue, bIsDefault);
} else {
super.setComponent(cmpId, cmpnValue, bIsDefault);
}
}
/**
* @see org.apache.fop.datatypes.CompoundDatatype#getComponent(int)
*/
public Property getComponent(int cmpId) {
if (cmpId == CP_PRECEDENCE) {
return getPrecedence();
} else if (cmpId == CP_CONDITIONALITY) {
return getConditionality();
} else {
return super.getComponent(cmpId);
}
}
/**
*
* @param precedence precedence Property to set
* @param bIsDefault (is not used anywhere)
*/
protected void setPrecedence(Property precedence, boolean bIsDefault) {
this.precedence = precedence;
}
/**
*
* @param conditionality conditionality Property to set
* @param bIsDefault (is not used anywhere)
*/
protected void setConditionality(Property conditionality,
boolean bIsDefault) {
this.conditionality = conditionality;
}
/**
* @return precedence Property
*/
public Property getPrecedence() {
return this.precedence;
}
/**
* @return conditionality Property
*/
public Property getConditionality() {
return this.conditionality;
}
/**
* Indicates if the length can be discarded on certain conditions.
* @return true if the length can be discarded.
*/
public boolean isDiscard() {
return this.conditionality.getEnum() == Constants.EN_DISCARD;
}
public String toString() {
return "Space[" +
"min:" + getMinimum().getObject() +
", max:" + getMaximum().getObject() +
", opt:" + getOptimum().getObject() +
", precedence:" + precedence.getObject() +
", conditionality:" + conditionality.getObject() + "]";
}
/**
* @return the Space (datatype) object contained here
*/
public SpaceProperty getSpace() {
return this;
}
/**
* Space extends LengthRange.
* @return the Space (datatype) object contained here
*/
public LengthRangeProperty getLengthRange() {
return this;
}
/**
* @return the Space (datatype) object contained here
*/
public Object getObject() {
return this;
}
}
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