/*

  * Copyright 2007-2008 The Kuali Foundation

  * 

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php

  * 

  * 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.kuali.rice.kns.authorization;

 import java.util.HashMap;

 import java.util.HashSet;

 import java.util.Map;

 import java.util.Set;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.kns.datadictionary.mask.MaskFormatter;

 import org.kuali.rice.kns.util.KNSConstants;

 import org.kuali.rice.kns.web.ui.Field;

 public class BusinessObjectRestrictionsBase implements

                 BusinessObjectRestrictions {

         private Map<String, MaskFormatter> partiallyMaskedFields;

         private Map<String, MaskFormatter> fullyMaskedFields;

         protected Set<String> allRestrictedFields;

         public BusinessObjectRestrictionsBase() {

                 clearAllRestrictions();

         }

         public boolean hasAnyFieldRestrictions() {

                 return !partiallyMaskedFields.isEmpty() || !fullyMaskedFields.isEmpty();

         }

         public boolean hasRestriction(String fieldName) {

                 return isPartiallyMaskedField(fieldName) || isFullyMaskedField(fieldName);

         }

         public void addFullyMaskedField(String fieldName,

                         MaskFormatter maskFormatter) {

                 fullyMaskedFields.put(fieldName, maskFormatter);

         }

         public void addPartiallyMaskedField(String fieldName,

                         MaskFormatter maskFormatter) {

                 partiallyMaskedFields.put(fieldName, maskFormatter);

         }

         /**

          * 

          * This method returns the authorization setting for the given field name.

          * If the field name is not restricted in any way, a default full-editable

          * value is returned.

          * 

          * @param fieldName

          *            - name of field to get authorization restrictions for.

          * @return a populated FieldAuthorization class for this field

          * 

          */

         public FieldRestriction getFieldRestriction(String fieldName) {

                 if (hasRestriction(fieldName)) {

                         FieldRestriction fieldRestriction = null;

                         if (isPartiallyMaskedField(fieldName)) {

                                 fieldRestriction = new FieldRestriction(fieldName,

                                                 Field.PARTIALLY_MASKED);

                                 fieldRestriction.setMaskFormatter(partiallyMaskedFields

                                                 .get(normalizeFieldName(fieldName)));

                         }

                         if (isFullyMaskedField(fieldName)) {

                                 fieldRestriction = new FieldRestriction(fieldName, Field.MASKED);

                                 fieldRestriction.setMaskFormatter(fullyMaskedFields

                                                 .get(normalizeFieldName(fieldName)));

                         }

                         return fieldRestriction;

                 } else {

                         return new FieldRestriction(fieldName, Field.EDITABLE);

                 }

         }

         public void clearAllRestrictions() {

                 partiallyMaskedFields = new HashMap<String, MaskFormatter>();

                 fullyMaskedFields = new HashMap<String, MaskFormatter>();

                 allRestrictedFields = null;

         }

         /**

          * This method is used to convert field names on forms into a format that's compatible with field names

          * that are registered with a restriction.  The base implementation of this method just returns the string.

          * 

          * @param fieldName The field name that would be rendered on a form

          * @return

          */

         protected String normalizeFieldName(String fieldName) {

                 return fieldName;

         }

         protected boolean isFullyMaskedField(String fieldName) {

                 String normalizedFieldName = normalizeFieldName(fieldName);

                 return fullyMaskedFields.containsKey(normalizedFieldName);

         }

         protected boolean isPartiallyMaskedField(String fieldName) {

                 String normalizedFieldName = normalizeFieldName(fieldName);

                 return partiallyMaskedFields.containsKey(normalizedFieldName);

         }

 }