RegexParameterFilterSubform.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.regex.Pattern;
import java.util.regex.PatternSyntaxException;

import org.apache.wicket.Component;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.PropertyModel;
import org.apache.wicket.validation.IValidatable;
import org.apache.wicket.validation.IValidator;
import org.apache.wicket.validation.ValidationError;
import org.geowebcache.filter.parameters.RegexParameterFilter;
import org.geowebcache.filter.parameters.CaseNormalizer;

/**
 * Subform that displays basic information about a ParameterFilter
 * @author Kevin Smith, OpenGeo
 *
 */
public class RegexParameterFilterSubform 
    extends AbstractParameterFilterSubform<RegexParameterFilter> {

    static final private IValidator<String> REGEXP_VALIDATOR = new IValidator<String>() {

        private static final long serialVersionUID = 3753607592277740081L;

        @Override
        public void validate(IValidatable<String> validatable) {
            final String regex = validatable.getValue();
            try{
                Pattern.compile(regex);
            } catch (PatternSyntaxException ex) {
                ValidationError error = new ValidationError();
                error.setMessage("Invalid Regular expression");
                error.addKey(getClass().getSimpleName() + "." + "invalidRegularExpression");
                validatable.error(error);
            }
        }
        
    };

    /** serialVersionUID */
    private static final long serialVersionUID = 1L;
    
    private Component normalize;

    public RegexParameterFilterSubform(String id,
            IModel<RegexParameterFilter> model) {
        super(id, model);
        
        final Component defaultValue;
        
        defaultValue = new TextField<String>("defaultValue", 
                new PropertyModel<String>(model, "defaultValue"));
        add(defaultValue);
        
        final TextField<String> regex;
        
        regex = new TextField<String>("regex", new PropertyModel<String>(model, "regex"));
        
        regex.add(REGEXP_VALIDATOR);
        
        add(regex);
        
        normalize = new CaseNormalizerSubform("normalize", new PropertyModel<CaseNormalizer>(model, "normalize"));
        add(normalize);
    }

}