SpecialConstantsBuilder.java

package com.indeed.proctor.webapp.extensions;

import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 */
public class SpecialConstantsBuilder {

    public static String build(final Map<String, Object> definitionSpecialConstants, final Set<String> supportedConstants, final String specialConstantsName){
        final List<String> selectedSpecialConstants = definitionSpecialConstants != null &&
                definitionSpecialConstants.containsKey(specialConstantsName) ? ((List<String>)definitionSpecialConstants.get(specialConstantsName)) : Collections.<String>emptyList();


        final StringBuilder specialConstantsHtml = new StringBuilder();
        specialConstantsHtml.append("<div class='row  '>");
        specialConstantsHtml.append("<div class='three columns'><h6>" + specialConstantsName  +"</h6></div>");
        specialConstantsHtml.append("<div class='three columns'></div>");
        specialConstantsHtml.append("<div class='nine columns'></div>");

        final Object[] supportedConstantsArray = supportedConstants.toArray();
        for(int columnNum = 0; columnNum < 9; columnNum++) {
            specialConstantsHtml.append("<div class='one columns'>");
            for (int step = columnNum; step < supportedConstantsArray.length; step +=9) {
                final String constant = (String) supportedConstantsArray[step];
                specialConstantsHtml.append("<label for='special_constants_" + specialConstantsName + "_" + step + "'>");
                String checked = selectedSpecialConstants.contains(constant) ? "checked='checked'" : "";
                specialConstantsHtml.append("<input id='special_constants_" + specialConstantsName + "_" + step + "' name='specialConstants." + specialConstantsName + "[]' class='mrs json' type='checkbox' value='" + constant + "'" + checked + ">" + constant);
                specialConstantsHtml.append("</label>");
            }
            specialConstantsHtml.append("</div>");
        }
        specialConstantsHtml.append("</div>");

        return specialConstantsHtml.toString();
    }

}