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/*
* 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.
*/
/* $Id$ */
package org.apache.fop.util.text;
import java.text.ChoiceFormat;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.fop.util.text.AdvancedMessageFormat.Part;
import org.apache.fop.util.text.AdvancedMessageFormat.PartFactory;
/**
* Defines a "choice" field part that works like {@link ChoiceFormat}.
*/
public class ChoiceFieldPart implements Part {
private static final Pattern VARIABLE_REGEX = Pattern.compile("\\{([^\\}]+)\\}");
private String fieldName;
private ChoiceFormat choiceFormat;
/**
* Creates a new choice part.
* @param fieldName the field name to work on
* @param choicesPattern the choices pattern (as used by {@link ChoiceFormat})
*/
public ChoiceFieldPart(String fieldName, String choicesPattern) {
this.fieldName = fieldName;
this.choiceFormat = new ChoiceFormat(choicesPattern);
}
/** {@inheritDoc} */
public boolean isGenerated(Map params) {
Object obj = params.get(fieldName);
return obj != null;
}
/** {@inheritDoc} */
public void write(StringBuffer sb, Map params) {
Object obj = params.get(fieldName);
Number num = (Number)obj;
String result = this.choiceFormat.format(num.doubleValue());
Matcher m = VARIABLE_REGEX.matcher(result);
if (m.find()) {
//Resolve inner variables
AdvancedMessageFormat f = new AdvancedMessageFormat(result);
f.format(params, sb);
} else {
sb.append(result);
}
}
/** {@inheritDoc} */
public String toString() {
return "{" + this.fieldName + ",choice, ....}";
}
/** Factory for ChoiceFieldPart. */
public static class Factory implements PartFactory {
/** {@inheritDoc} */
public Part newPart(String fieldName, String values) {
return new ChoiceFieldPart(fieldName, values);
}
/** {@inheritDoc} */
public String getFormat() {
return "choice";
}
}
}
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