/*
* 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.fop.fo.properties;
import java.util.Iterator;
import java.util.List;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.FObj;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.expr.NCnameProperty;
import org.apache.fop.fo.expr.PropertyException;
/**
* Special list property for text-decoration.
*/
public class TextDecorationProperty extends ListProperty {
/**
* Inner class for creating instances of ListProperty
*/
public static class Maker extends PropertyMaker {
/**
* @param propId ID of the property for which Maker should be created
*/
public Maker(int propId) {
super(propId);
}
/**
* {@inheritDoc}
*/
public Property convertProperty(Property p,
PropertyList propertyList, FObj fo)
throws PropertyException {
if (p instanceof TextDecorationProperty) {
return p;
} else {
if (p instanceof ListProperty) {
ListProperty lst = (ListProperty)p;
lst = checkEnums(lst);
return new TextDecorationProperty((ListProperty)p);
} else if (p instanceof EnumProperty) {
ListProperty lst = new ListProperty(p);
return new TextDecorationProperty(lst);
} else {
throw new PropertyException("Cannot convert anything other "
+ "than a list property, got a " + p.getClass().getName());
}
}
}
private ListProperty checkEnums(ListProperty lst) throws PropertyException {
List l = lst.getList();
for (int i = 0; i < l.size(); i++) {
Property prop = (Property)l.get(i);
if (prop instanceof EnumProperty) {
//skip
} else if (prop instanceof NCnameProperty) {
Property prop_enum = checkEnumValues(((NCnameProperty)prop).getString());
if (prop_enum == null) {
throw new PropertyException("Illegal enum value: " + prop.getString());
}
l.set(i, prop_enum);
} else {
throw new PropertyException("Invalid content for text-decoration "
+ "property: " + prop);
}
}
return lst;
}
}
/**
* Constructs a new instance by converting a ListProperty.
* @param listProp the ListProperty to be converted
* @throws PropertyException in case the conversion fails
*/
public TextDecorationProperty(ListProperty listProp) throws PropertyException {
List lst = listProp.getList();
boolean none = false;
boolean under = false;
boolean over = false;
boolean through = false;
boolean blink = false;
Iterator i = lst.iterator();
while (i.hasNext()) {
Property prop = (Property)i.next();
switch (prop.getEnum()) {
case Constants.EN_NONE:
if (under | over | through | blink) {
throw new PropertyException(
"Invalid combination of values");
}
none = true;
break;
case Constants.EN_UNDERLINE:
case Constants.EN_NO_UNDERLINE:
if (none) {
throw new PropertyException("'none' specified, no additional values allowed");
}
if (under) {
throw new PropertyException("Invalid combination of values");
}
under = true;
break;
case Constants.EN_OVERLINE:
case Constants.EN_NO_OVERLINE:
if (none) {
throw new PropertyException("'none' specified, no additional values allowed");
}
if (over) {
throw new PropertyException("Invalid combination of values");
}
over = true;
break;
case Constants.EN_LINE_THROUGH:
case Constants.EN_NO_LINE_THROUGH:
if (none) {
throw new PropertyException("'none' specified, no additional values allowed");
}
if (through) {
throw new PropertyException("Invalid combination of values");
}
through = true;
break;
case Constants.EN_BLINK:
case Constants.EN_NO_BLINK:
if (none) {
throw new PropertyException("'none' specified, no additional values allowed");
}
if (blink) {
throw new PropertyException("Invalid combination of values");
}
blink = true;
break;
default:
throw new PropertyException("Invalid value specified: " + prop);
}
addProperty(prop);
}
}
}