/**

  * Copyright 2010 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.osedu.org/licenses/ECL-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.

  */

 package org.kuali.student.lum.lu.ui.tools.client.configuration;

 import org.kuali.student.common.assembly.data.Metadata;

 import org.kuali.student.common.assembly.data.QueryPath;

 import org.kuali.student.common.ui.client.configurable.mvc.FieldDescriptor;

 import org.kuali.student.common.ui.client.configurable.mvc.sections.Section;

 import org.kuali.student.common.ui.client.configurable.mvc.views.SectionView;

 import org.kuali.student.common.ui.client.configurable.mvc.views.VerticalSectionView;

 import org.kuali.student.common.ui.client.mvc.Controller;

 import org.kuali.student.common.ui.client.mvc.DataModelDefinition;

 import org.kuali.student.common.ui.client.widgets.KSErrorDialog;

 import org.kuali.student.common.ui.client.widgets.field.layout.element.MessageKeyInfo;

 import org.kuali.student.lum.lu.ui.tools.client.widgets.KSBrowser;

 import com.google.gwt.user.client.ui.Widget;

 public class CatalogBrowserConfigurer {

         public static final String CATALOG_BROWSER_MODEL = "CatalogBrowserModel";

         private DataModelDefinition modelDefinition;

         public enum Sections {

                 BROWSE_BY_SUBJECT_AREA, BROWSE_BY_SCHOOL;

         }

         public void setModelDefinition(DataModelDefinition modelDefinition) {

                 this.modelDefinition = modelDefinition;

         }

         private Controller controller;

         public Controller getController() {

                 return controller;

         }

         public void setController(Controller controller) {

                 this.controller = controller;

         }

         public void configureCatalogBrowser(CatalogBrowserController layout) {

                 // layout.setContentTitle("Browse Course Catalog");

                 layout.addStyleName("browseCatalog");

                 layout.setBasicTitle("Browse Course Catalog");

                 layout.addTab(createBrowseBySubjectAreaSection(),

                                 "Browse By Subject Area");

                 layout.addTab(createBrowseBySchoolSection(), "Browse By School");

                 layout.setDefaultView(Sections.BROWSE_BY_SUBJECT_AREA);

         }

         private SectionView createBrowseBySubjectAreaSection() {

                 VerticalSectionView nestedSectionView = 

                         new VerticalSectionView(Sections.BROWSE_BY_SUBJECT_AREA, "", CATALOG_BROWSER_MODEL);

                 String fieldKey = CatalogBrowserConstants.FULLY_QUALIFIED_BY_SUBJECT_AREA;

                 addField(nestedSectionView, fieldKey, null,        configureKSBrowser(fieldKey));

                 return nestedSectionView;

         }

         private SectionView createBrowseBySchoolSection() {

                 VerticalSectionView nestedSectionView = 

                         new VerticalSectionView(Sections.BROWSE_BY_SCHOOL, "", CATALOG_BROWSER_MODEL);

                 String fieldKey = CatalogBrowserConstants.FULLY_QUALIFIED_BY_SCHOOL_OR_COLLEGE;

                 addField(nestedSectionView, fieldKey, null,        configureKSBrowser(fieldKey));

                 return nestedSectionView;

         }

         private String formatMetadata(Metadata md, String fieldKey) {

                 String msg = "metadata for fieldKey="

                                 + fieldKey

                                 // + "\n Name=" + md.getName ()

                                 + "\n LabelKey="

                                 + md.getLabelKey()

                                 + "\n defaultValuePath="

                                 + md.getDefaultValuePath()

                                 + "\n LookupContextPath="

                                 + md.getLookupContextPath()

                                 // + "\n maskForatter=" + md.getMaskFormatter ()

                                 // + "\n partialMaskFormatter=" + md.getPartialMaskFormatter ()

                                 + "\n dataType=" + md.getDataType() + "\n defaultValue="

                                 + md.getDefaultValue() + "\n WriteAccess="

                                 + md.getWriteAccess() + "\n initialLookup="

                                 + md.getInitialLookup() + "\n additionalLookups="

                                 + md.getAdditionalLookups();

                 if (md.getProperties() != null) {

                         msg += "\n It has " + md.getProperties().size() + " properties: \n";

                         for (String fk : md.getProperties().keySet()) {

                                 msg += "\n" + formatMetadata(md.getProperties().get(fk), fk);

                         }

                 }

                 return msg;

         }

         private KSBrowser configureKSBrowser(String fieldKey) {

                 QueryPath path = QueryPath.concat(null, fieldKey);

                 Metadata md = modelDefinition.getMetadata(path);

                 if (md == null) {

                         KSErrorDialog.show(new NullPointerException(

                                         "Invalid lookup configuration: missing field in metadata."

                                                         + formatMetadata(modelDefinition.getMetadata(),        fieldKey)));

                         return null;

                 }

                 if (md.getInitialLookup() == null) {

                         KSErrorDialog.show(new NullPointerException(

                                         "Invalid lookup configuration: missing initial lookup in metadata."

                                                         + formatMetadata(modelDefinition.getMetadata(),        fieldKey)));

                         return null;

                 }

                 KSBrowser browser = new KSBrowser(md.getInitialLookup(), controller);

                 return browser;

         }

         protected FieldDescriptor addField(Section section, String fieldKey, MessageKeyInfo messageKey, Widget widget) {

                 return addField(section, fieldKey, messageKey, widget, null);

         }

         protected FieldDescriptor addField(Section section, String fieldKey,

                         MessageKeyInfo messageKey, Widget widget, String parentPath) {

                 QueryPath path = QueryPath.concat(parentPath, fieldKey);

                 Metadata meta = modelDefinition.getMetadata(path);

                 FieldDescriptor fd = new FieldDescriptor(path.toString(), messageKey, meta);

                 if (widget != null) {

                         fd.setFieldWidget(widget);

                 }

                 section.addField(fd);

                 return fd;

         }

 }