StringParameterFilterSubform.java

/* (c) 2014 - 2016 Open Source Geospatial Foundation - all rights reserved
 * (c) 2001 - 2013 OpenPlans
 * This code is licensed under the GPL 2.0 license, available at the root
 * application directory.
 */

package org.geoserver.gwc.web.layer;

import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;

import org.apache.commons.lang.StringUtils;
import org.apache.wicket.Component;
import org.apache.wicket.markup.html.form.TextArea;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.util.convert.IConverter;
import org.geowebcache.filter.parameters.CaseNormalizer;
import org.geowebcache.filter.parameters.StringParameterFilter;

/**
 * Subform that allows editing of a StringParameterFilter
 * @author Kevin Smith, OpenGeo
 *
 */
public class StringParameterFilterSubform extends 
    AbstractParameterFilterSubform<StringParameterFilter> {

    private static final long serialVersionUID = -3815153551079914831L;

    private static final IConverter<List<String>> CONVERT = new IConverter<List<String>>() {

        private static final long serialVersionUID = -7486127358227242772L;

        @Override
        public List<String> convertToObject(String value, Locale locale) {
            if(value==null) {
                return null;
            } else {
                String[] strings = StringUtils.split(value, "\r\n");
                return Arrays.asList(strings);
            }
        }

        @Override
        public String convertToString(List<String> value, Locale locale) {
            Iterator<String> i = value.iterator();
            StringBuilder sb = new StringBuilder();
            if(i.hasNext()) {
                sb.append(i.next());
            }
            while(i.hasNext()){
                sb.append("\r\n");
                sb.append(i.next());
            }
            return sb.toString();
        }
        
    };

    private Component normalize;

    public StringParameterFilterSubform(String id,
            IModel<StringParameterFilter> model) {
        super(id, model);
        
        final Component defaultValue;
        
        defaultValue = new TextField<String>("defaultValue", new PropertyModel<String>(model, "defaultValue"));
        add(defaultValue);
        
        final TextArea<List<String>> values;
        values = new TextArea<List<String>>("values", new PropertyModel<List<String>>(model, "values")) {
            /** serialVersionUID */
            private static final long serialVersionUID = 1L;

            @SuppressWarnings("unchecked")
			@Override
            public <S> IConverter<S> getConverter(Class<S> type) {
            	if (List.class.isAssignableFrom(type)) {
            		return (IConverter<S>) CONVERT;
            	}
            	return super.getConverter(type);
            }
        };
        values.setConvertEmptyInputStringToNull(false);
        add(values);
        
        normalize = new CaseNormalizerSubform("normalize", new PropertyModel<CaseNormalizer>(model, "normalize"));
        add(normalize);
    }

}