package org.kuali.student.lum.common.client.widgets;

 import java.util.ArrayList;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

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

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

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

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

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

 import org.kuali.student.common.assembly.data.Data.DataValue;

 import org.kuali.student.common.assembly.data.Data.Value;

 import org.kuali.student.common.search.dto.SearchParam;

 import org.kuali.student.common.search.dto.SearchRequest;

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

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

 import org.kuali.student.common.ui.client.configurable.mvc.binding.HasDataValueBinding;

 import org.kuali.student.common.ui.client.configurable.mvc.binding.ModelWidgetBindingSupport;

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

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

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

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

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

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

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

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

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

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

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

 import org.kuali.student.common.ui.client.widgets.layout.VerticalFlowPanel;

 import org.kuali.student.common.ui.client.widgets.list.KSSelectedList;

 import org.kuali.student.common.ui.client.widgets.list.SelectionChangeEvent;

 import org.kuali.student.common.ui.client.widgets.list.SelectionChangeHandler;

 import org.kuali.student.common.ui.client.widgets.list.impl.SimpleListItems;

 import org.kuali.student.common.ui.client.widgets.menus.KSListPanel;

 import org.kuali.student.common.ui.client.widgets.progress.BlockingTask;

 import org.kuali.student.common.ui.client.widgets.progress.KSBlockingProgressIndicator;

 import org.kuali.student.common.ui.client.widgets.search.KSPicker;

 import org.kuali.student.lum.lu.dto.MembershipQueryInfo;

 import com.google.gwt.dom.client.Style;

 import com.google.gwt.event.dom.client.ClickEvent;

 import com.google.gwt.event.dom.client.ClickHandler;

 import com.google.gwt.event.logical.shared.CloseEvent;

 import com.google.gwt.event.logical.shared.CloseHandler;

 import com.google.gwt.event.shared.HandlerRegistration;

 import com.google.gwt.user.client.Timer;

 import com.google.gwt.user.client.Window;

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

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

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

 public class CluSetEditorWidget extends VerticalSectionView {

     private List<KSSelectedListPanelPair> selectedListPanelPairs = new ArrayList<KSSelectedListPanelPair>();

     private DataModelDefinition modelDefinition;

 //    private final List<HandlerRegistration> showClusetDetailsHandlerRegs = new ArrayList<HandlerRegistration>(); 

     private final Map<String, HandlerRegistration> showCluRangeDetailsHandlerRegs = new HashMap<String, HandlerRegistration>();

     private List<KSItemLabelPanelPair> itemLabelPanelPairs = new ArrayList<KSItemLabelPanelPair>();

     private String cluSetType;

     private String metadataId;

     private static Map<String, DataModelDefinition> modelDefinitionCache = new HashMap<String, DataModelDefinition>();

     private BlockingTask initializeTask = new BlockingTask("Initializing");

     private boolean singularCluOnly;

     private KSSelectedList approvedClusSelection;

     private enum CluSetManagementField {

         APPROVED, PROPOSED, CLUSETS, RANGE

     }

     public CluSetEditorWidget(CluSetRetriever cluSetRetriever, Enum<?> viewEnum,

             String name, String modelId, boolean showTitle,

             final Callback<Boolean> onReady, String cluSetType, boolean singularCluOnly) {

         super(viewEnum, name, modelId, showTitle);

         this.cluSetType = cluSetType;

         this.singularCluOnly = singularCluOnly;

         if (cluSetType != null && cluSetType.equals("kuali.cluSet.type.Program")) {

             this.metadataId = "programSet";

         } else {

             this.metadataId = "courseSet";

         }

         KSBlockingProgressIndicator.addTask(initializeTask);

         if (modelDefinitionCache.get(metadataId) == null) {

             cluSetRetriever.getMetadata(metadataId, new Callback<Metadata>(){

                 @Override

                 public void exec(Metadata result) {

                     DataModelDefinition def = new DataModelDefinition(result);

                     modelDefinitionCache.put(metadataId, def);

                     setDef(def);

                     setupEditor();

                     if (onReady != null) {

                         onReady.exec(new Boolean(true));

                     }

                     KSBlockingProgressIndicator.removeTask(initializeTask);                

                 }

             });

         } else {

             DataModelDefinition def = modelDefinitionCache.get(metadataId);

             setDef(def);

             setupEditor();

             if (onReady != null) {

                 onReady.exec(new Boolean(true));

             }

             KSBlockingProgressIndicator.removeTask(initializeTask);                

         }

     }

     private void setDef(DataModelDefinition def) {

         this.modelDefinition = def;

     }

     public void setupEditor() {

         String labelType = null;

         if (cluSetType == null || !cluSetType.equals("kuali.cluSet.type.Program")) {

             labelType = "Course";

         } else {

             labelType = "Program";

         }

         final CluSetEditOptionDropdown chooser = new CluSetEditOptionDropdown();

         SwitchSection clusetDetails = new SwitchSection(

                 chooser,

                 null);

         clusetDetails.enableConfirmation(false);

         // ****** Add Approved Clus *******

         Section approvedClusSection = new VerticalSection();

         FieldDescriptor approvedClusFd = addField(approvedClusSection, 

                 CommonWidgetConstants.CLU_SET_APPROVED_CLUS_FIELD, 

                 generateMessageInfo(CommonWidgetConstants.NEW_CLU_SET_CONTENT_APPROVED + labelType),

                 null,

                 null);

         approvedClusSelection = (KSSelectedList) approvedClusFd.getFieldWidget();

         KSListPanel approvedClusListPanel = approvedClusSelection.separateValuesPanel();

         clusetDetails.addSection(approvedClusSection, CommonWidgetConstants.CLU_SET_SWAP_APPROVED_CLUS);

         // END OF items related to Add Approved Clus

         // ****** Add Proposed Clus *******

         Section proposedClusSection = new VerticalSection();

         FieldDescriptor proposedClusFd = addField(proposedClusSection, 

                 CommonWidgetConstants.CLU_SET_PROPOSED_CLUS_FIELD, 

                 generateMessageInfo(CommonWidgetConstants.NEW_CLU_SET_CONTENT_PROPOSED + labelType),

                 null,

                 null);

         final KSSelectedList proposedClusSelection = (KSSelectedList) proposedClusFd.getFieldWidget();

         KSListPanel proposedClusListPanel = proposedClusSelection.separateValuesPanel();

         clusetDetails.addSection(proposedClusSection, CommonWidgetConstants.CLU_SET_SWAP_PROPOSED_CLUS);

         // END OF items related to Add Approved Clus

         // ****** Add Clu Range *******

         KSItemLabel clusetRangeLabel = null;

         if (displayField(CluSetManagementField.RANGE)) {

             Section cluRangeSection = new VerticalSection();

             final Picker cluSetRangePicker = configureSearch(CommonWidgetConstants.CLU_SET_CLU_SET_RANGE_EDIT_FIELD);

             addField(cluRangeSection, 

                     CommonWidgetConstants.CLU_SET_CLU_SET_RANGE_EDIT_FIELD, 

                     generateMessageInfo(CommonWidgetConstants.NEW_CLU_SET_CONTENT_RANGE + labelType),

                     cluSetRangePicker,

                     null);

             final CluSetRangeDataHelper clusetRangeModelHelper = new CluSetRangeDataHelper();

             clusetRangeLabel = new KSItemLabel(true, true, clusetRangeModelHelper);

             final KSItemLabel theClusetRangeLabel = clusetRangeLabel;

             clusetRangeLabel.getElement().getStyle().setProperty("border", "solid 1px #cdcdcd");

             clusetRangeLabel.getElement().getStyle().setProperty("width", "354px");

             final FieldDescriptor cluRangeFieldDescriptor = addField(

                     cluRangeSection, 

                     CommonWidgetConstants.CLU_SET_CLU_SET_RANGE_FIELD, 

                     null, 

                     clusetRangeLabel,

                     null);

             cluRangeFieldDescriptor.setWidgetBinding(new CluSetRangeBinding(clusetRangeModelHelper));

             cluSetRangePicker.getSearchWindow().addActionCompleteCallback(new Callback<Boolean>() {

                 @Override

                 public void exec(Boolean result) {

                     cluSetRangePicker.getSearchWindow().hide();

 //                  ((ModelWidgetBinding)cluRangeFieldDescriptor.getModelWidgetBinding()).setWidgetValue(widget, model, path)

 //                  CluSetHelper cluSetHelper = CluSetHelper.wrap(model.getRoot());

 //                  cluSetHelper.setCluRangeParams(value)

                     final SearchRequest searchRequest = cluSetRangePicker.getSearchWindow().getSearchRequest();

                     String selectedSearchKey = searchRequest.getSearchKey();

                     Data searchRequestData = CluSetRangeModelUtil.INSTANCE.toData(searchRequest, null);

                     LookupMetadata lookupMetadata = null;

                     // look for the lookupMetaData corresponding to the searchRequest

                     List<LookupMetadata> lookupMDs = new ArrayList<LookupMetadata>();

                     lookupMDs.add(cluSetRangePicker.getInitLookupMetadata());

                     lookupMetadata = findLookupMetadataByLookupId(selectedSearchKey, 

                             lookupMDs, searchRequest.getParams());

                     if (lookupMetadata == null || 

                             !nullSafeEquals(lookupMetadata.getSearchTypeId(), 

                                     selectedSearchKey)) {

                         lookupMetadata = findLookupMetadataByLookupId(selectedSearchKey, 

                                 cluSetRangePicker.getAdditionalLookupMetadata(),

                                 searchRequest.getParams());

                     }

                     addClusetItemViewHandler(clusetRangeModelHelper,

                             theClusetRangeLabel,

                             lookupMetadata,

                             searchRequestData,

                             searchRequest);

                     theClusetRangeLabel.setHighlighted(true);

                     new Timer() {

                         @Override

                         public void run() {

                             theClusetRangeLabel.setHighlighted(false);

                         }

                     }.schedule(5000);

                 }

             });

             clusetDetails.addSection(cluRangeSection, CommonWidgetConstants.CLU_SET_SWAP_CLU_SET_RANGE);

         }

         // END OF items related to Add Clu Range

         // ****** Add cluSets *******

         KSListPanel cluSetsListPanel = null;

         KSSelectedList cluSetsSelection = null;

         if (displayField(CluSetManagementField.CLUSETS)) {

             Section cluSetSection = new VerticalSection();

             FieldDescriptor cluSetsTempFd = getFieldDescriptor( 

                     CommonWidgetConstants.CLU_SET_CLU_SETS_FIELD, 

                     generateMessageInfo(CommonWidgetConstants.NEW_CLU_SET_CONTENT_CLUSET + labelType),

                     null,

                     null);

             KSSelectedList tempCluSetsSelection = (KSSelectedList) cluSetsTempFd.getFieldWidget();

             WidgetConfigInfo config = tempCluSetsSelection.getConfig();

             cluSetsSelection = new KSSelectedList(config, false);

             cluSetsListPanel = cluSetsSelection.separateValuesPanel();

             final FieldDescriptor cluSetsFd = addField(

                     cluSetSection, 

                     CommonWidgetConstants.CLU_SET_CLU_SETS_FIELD, 

                     generateMessageInfo(CommonWidgetConstants.NEW_CLU_SET_CONTENT_CLUSET + labelType),

                     cluSetsSelection, 

                     null);

             cluSetsFd.setWidgetBinding(new CluSetBinding());

             clusetDetails.addSection(cluSetSection, CommonWidgetConstants.CLU_SET_SWAP_CLU_SETS);

         }

         // END OF items related to Add CluSets

         // display item type title if the list selected items is populated

         // hide if the list becomes empty (thus the close listeners for each item

         String contextName = (cluSetType != null && cluSetType.equals("kuali.cluSet.type.Program"))?

                 "PROGRAMS" : "COURSES";

         VerticalFlowPanel selectedValuesPanel = new VerticalFlowPanel();

         selectedValuesPanel.getElement().getStyle().setPaddingTop(20, Style.Unit.PX);

         VerticalFlowPanel approvedClusPanel = prepareValuesPanel(approvedClusListPanel, "APPROVED " + contextName);

         approvedClusPanel.getElement().getStyle().setPaddingTop(15, Style.Unit.PX);

         VerticalFlowPanel proposedClusPanel = prepareValuesPanel(proposedClusListPanel, "PROPOSED " + contextName);

         proposedClusPanel.getElement().getStyle().setPaddingTop(15, Style.Unit.PX);

         VerticalFlowPanel rangePanel = null;

         if (displayField(CluSetManagementField.RANGE)) {

             rangePanel = prepareValuesPanel(clusetRangeLabel, contextName + " RANGE");

             rangePanel.getElement().getStyle().setPaddingTop(15, Style.Unit.PX);

         }

         VerticalFlowPanel cluSetsPanel = null;

         if (displayField(CluSetManagementField.CLUSETS)) {

             cluSetsPanel = prepareValuesPanel(cluSetsListPanel, contextName + " SETS");

             cluSetsPanel.getElement().getStyle().setPaddingTop(15, Style.Unit.PX);

         }

         selectedValuesPanel.add(approvedClusPanel);

         selectedValuesPanel.add(proposedClusPanel);

         if (displayField(CluSetManagementField.RANGE)) {

             selectedValuesPanel.add(rangePanel);

         }

         if (displayField(CluSetManagementField.CLUSETS)) {

             selectedValuesPanel.add(cluSetsPanel);

         }

         addVisibilityHandlers(approvedClusSelection, approvedClusPanel);

         addVisibilityHandlers(proposedClusSelection, proposedClusPanel);

         if (displayField(CluSetManagementField.RANGE)) {

             addVisibilityHandlers(clusetRangeLabel, rangePanel);

         }

         if (displayField(CluSetManagementField.CLUSETS)) {

             addVisibilityHandlers(cluSetsSelection, cluSetsPanel);

         }

         selectedListPanelPairs.add(new KSSelectedListPanelPair(approvedClusSelection, approvedClusPanel));

         selectedListPanelPairs.add(new KSSelectedListPanelPair(proposedClusSelection, proposedClusPanel));

         if (displayField(CluSetManagementField.CLUSETS)) {

             selectedListPanelPairs.add(new KSSelectedListPanelPair(cluSetsSelection, cluSetsPanel));

         }

         if (displayField(CluSetManagementField.RANGE)) {

             itemLabelPanelPairs.add(new KSItemLabelPanelPair(clusetRangeLabel, rangePanel));

         }

         final VerticalSection choosingSection = new VerticalSection();

         HTML prompt;

         if(cluSetType.equals("kuali.cluSet.type.Program")){

             choosingSection.addWidget(new HTML("<b>Add a program or program set</b>"));

             prompt = new HTML("Add program or program sets. You may  <br/>"

                     + "add any combination of programs or program sets.");

         }

         else{

             choosingSection.addWidget(new HTML("<b>Add a course, course set, or course range</b>"));

             prompt = new HTML("Add courses, course sets, or course ranges to your course set. You may <br/>" +

                 "add any combination of courses, dynamic course ranges, or Course sets.");

         }

         choosingSection.addWidget(chooser);

         choosingSection.addSection(clusetDetails);

         chooser.addSelectionChangeHandler(new SelectionChangeHandler() {

             @Override

             public void onSelectionChange(SelectionChangeEvent event) {

                 if (chooser.getSelectedItem() != null &&

                         !chooser.getSelectedItem().trim().isEmpty()) {

                     choosingSection.setStyleName("KS-CluSetManagement-chooser");

                 } else {

                     choosingSection.setStyleName("KS-CluSetManagement-chooser-unselected");

                 }

             }

         });

         this.addWidget(prompt);

         this.addSection(choosingSection);

         this.addWidget(selectedValuesPanel);

     }

     private boolean displayField(CluSetManagementField field) {

         boolean result = false;

         switch(field) {

             case APPROVED:

             case PROPOSED:

                 result = true;

                 break;

             case RANGE:

                 if (!singularCluOnly && (cluSetType == null || !cluSetType.equals("kuali.cluSet.type.Program"))) {

                     result = true;

                 } else {

                     result = false;

                 }

                 break;

             case CLUSETS:

                 if (!singularCluOnly) {

                     result = true;

                 } else {

                     result = false;

                 }

                 break;

         }

         return result;

     }

     private void addClusetItemViewHandler(CluSetRangeDataHelper clusetRangeModelHelper,

             KSItemLabel clusetRangeLabel,

             final LookupMetadata lookupMetadata,

             Data searchRequestData,

             final SearchRequest searchRequest) {

         clusetRangeModelHelper.setLookupMetadata(lookupMetadata);

         clusetRangeLabel.setValue(new DataValue(searchRequestData));

         if (showCluRangeDetailsHandlerRegs != null && 

                 showCluRangeDetailsHandlerRegs.get(Integer.toString(clusetRangeLabel.instanceId)) != null) {

             ((HandlerRegistration)showCluRangeDetailsHandlerRegs.get(Integer.toString(clusetRangeLabel.instanceId))).removeHandler();

         }

         showCluRangeDetailsHandlerRegs.put(Integer.toString(clusetRangeLabel.instanceId), 

                 clusetRangeLabel.addShowDetailsHandler(new ClickHandler() {

             @Override

             public void onClick(ClickEvent event) {

                 SearchResultsLightBox srLightBox = new SearchResultsLightBox("View Course Range",

                         searchRequest, lookupMetadata);

                 srLightBox.show();

             }

         }));

     }

     protected MessageKeyInfo generateMessageInfo(String labelKey) {

         return new MessageKeyInfo("clusetmanagement", "clusetmanagement", "draft", labelKey);

     }

     private FieldDescriptor getFieldDescriptor( 

             String fieldKey, 

             MessageKeyInfo messageKey, 

             Widget widget, 

             String parentPath) {

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

         Metadata meta = modelDefinition.getMetadata(path);

         FieldDescriptor fd;

         if (widget != null) {

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

         }

         else{

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

         }

         return fd;

     }

     private FieldDescriptor addField(Section section, 

             String fieldKey, 

             MessageKeyInfo messageKey, 

             Widget widget, 

             String parentPath) {

         FieldDescriptor fd = getFieldDescriptor(fieldKey, messageKey, widget, parentPath);

         section.addField(fd);

         return fd;

     }

     private static boolean nullSafeEquals(Object obj1, Object obj2) {

         return (obj1 == null && obj2 == null ||

                 obj1 != null && obj2 != null && obj1.equals(obj2));

     }

     private VerticalFlowPanel prepareValuesPanel(Widget widget, String title) {

         final VerticalFlowPanel valuesPanel = new VerticalFlowPanel();

         valuesPanel.add(new KSLabel(title));

         valuesPanel.add(widget);

         valuesPanel.setVisible(false);

         return valuesPanel;

     }

     @Override

     public void updateWidgetData(DataModel model) {

         super.updateWidgetData(model);

         // this is to refresh the lists and item labels.

         if (selectedListPanelPairs != null) {

             for (KSSelectedListPanelPair selectedListPanelPair : selectedListPanelPairs) {

                 handleSelectedListVisibility(selectedListPanelPair.getKsSelectedList(), 

                         selectedListPanelPair.getPanel());

             }

         }

         if (itemLabelPanelPairs != null) {

             for (KSItemLabelPanelPair itemLabelPanelPair : itemLabelPanelPairs) {

                 handleListItemVisibility(itemLabelPanelPair.getKsItemLabel(), 

                         itemLabelPanelPair.getPanel());

             }

         }

     }

     private void addVisibilityHandlers(final KSItemLabel listItem,

             final Panel selectionPanel) {

         listItem.addValueChangeCallback(new Callback<Value>() {

             @Override

             public void exec(Value result) {

                 handleListItemVisibility(listItem, selectionPanel);

             }

         });

     }

     private void handleListItemVisibility(KSItemLabel listItem, Panel selectionPanel) {

         String displayText = listItem.getDisplayText();

         if (displayText == null || displayText.equals("")) {

             selectionPanel.setVisible(false);

         } else {

             selectionPanel.setVisible(true);

         }

     }

     private void addVisibilityHandlers(final KSSelectedList selectionList,

             final Panel selectionPanel) {

         selectionList.addSelectionChangeHandler(

                 new SelectionChangeHandler() {

                     @Override

                     public void onSelectionChange(SelectionChangeEvent event) {

                         handleSelectedListVisibility(selectionList, selectionPanel);

                     }

                 }

         );

     }

     private void handleSelectedListVisibility(final KSSelectedList selectionList, final Panel selectionPanel) {

         List<KSItemLabel> selectedItems = selectionList.getSelectedItems();

         if (selectedItems != null && !selectedItems.isEmpty()) {

             // show item type title

             selectionPanel.setVisible(true);

             for (KSItemLabel selectedItem : selectedItems) {

                 selectedItem.addCloseHandler(new CloseHandler<KSItemLabel>() {

                     @Override

                     public void onClose(CloseEvent<KSItemLabel> event) {

                         List<KSItemLabel> newSelectedItems = 

                             selectionList.getSelectedItems();

                         int numNewSelectedItems = (newSelectedItems == null)? 0 :

                             newSelectedItems.size();

                         if (numNewSelectedItems == 0) {

                             //hide item type title

                             selectionPanel.setVisible(false);

                         }

                     }

                 });

             }

         }

     }

     private Picker configureSearch(String fieldKey) {

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

         Metadata metaData = modelDefinition.getMetadata(path);

         Picker picker = new Picker(metaData.getInitialLookup(), metaData.getAdditionalLookups());

         return picker;

     }

     private static LookupMetadata findLookupMetadataByLookupId(String searchTypeId,

             List<LookupMetadata> lookupMetadatas,

             List<SearchParam> searchParams) {

         LookupMetadata result = null;

         if (lookupMetadatas != null) {

             for (LookupMetadata lookupMetadata : lookupMetadatas) {

                 if (nullSafeEquals(lookupMetadata.getSearchTypeId(), searchTypeId)) {

                     // search Type id matches now add up all the params meta found to the result

                     List<LookupParamMetadata> paramMetas = lookupMetadata.getParams();

                     List<LookupParamMetadata> resultParamMetas = null;

                     result = (result == null)? new LookupMetadata() : result;

                     result.setDesc(lookupMetadata.getDesc());

                     result.setId(lookupMetadata.getId());

                     result.setName("");

                     resultParamMetas = result.getParams();

                     if (resultParamMetas == null) {

                         resultParamMetas = new ArrayList<LookupParamMetadata>();

                     }

                     if (paramMetas != null) {

                         for (LookupParamMetadata paramMeta : paramMetas) {

                             boolean resultParamMetaFound = false;

                             for (LookupParamMetadata resultParamMeta : resultParamMetas) {

                                 if (paramMeta.getKey().equals(resultParamMeta)) {

                                     resultParamMetaFound = true;

                                     break;

                                 }

                             }

                             if (!resultParamMetaFound) {

                                 resultParamMetas.add(paramMeta);

                             }

                         }

                     }

                     result.setParams(resultParamMetas);

                     result.setQosMetadata(lookupMetadata.getQosMetadata());

                     result.setResultDisplayKey(lookupMetadata.getResultDisplayKey());

                     result.setResultReturnKey(lookupMetadata.getResultReturnKey());

                     result.setResults(lookupMetadata.getResults());

                     result.setResultSortKey(lookupMetadata.getResultSortKey());

                 }

             }

         }

         return result;

     }

     @Override

     public void updateModel() {

         super.updateModel();

     }

     public class CluSetEditOptionDropdown extends KSDropDown {

         public CluSetEditOptionDropdown(){

             SimpleListItems editOptions = new SimpleListItems();

             if (cluSetType != null && cluSetType.equals("kuali.cluSet.type.Program")) {

                 editOptions.addItem(CommonWidgetConstants.CLU_SET_SWAP_APPROVED_CLUS, "Approved Programs");

                 editOptions.addItem(CommonWidgetConstants.CLU_SET_SWAP_PROPOSED_CLUS, "Proposed Programs");

                 if (!CluSetEditorWidget.this.singularCluOnly) {

                     editOptions.addItem(CommonWidgetConstants.CLU_SET_SWAP_CLU_SETS, "Program Sets");

                 }

             } else {

                 editOptions.addItem(CommonWidgetConstants.CLU_SET_SWAP_APPROVED_CLUS, "Approved Courses");

                 editOptions.addItem(CommonWidgetConstants.CLU_SET_SWAP_PROPOSED_CLUS, "Proposed Courses");

                 if (!CluSetEditorWidget.this.singularCluOnly) {

                     editOptions.addItem(CommonWidgetConstants.CLU_SET_SWAP_CLU_SETS, "Course Sets");

                     editOptions.addItem(CommonWidgetConstants.CLU_SET_SWAP_CLU_SET_RANGE, "Course Ranges (Course numbers, common learning objectives, etc)");

                 }

             }

             super.setListItems(editOptions);

         }

     }

     class KSSelectedListPanelPair {

         private KSSelectedList ksSelectedList;

         private Panel panel;

         public KSSelectedListPanelPair(KSSelectedList ksSelectedList, Panel panel) {

             setKsSelectedList(ksSelectedList);

             setPanel(panel);

         }

         public KSSelectedList getKsSelectedList() {

             return ksSelectedList;

         }

         public void setKsSelectedList(KSSelectedList ksSelectedList) {

             this.ksSelectedList = ksSelectedList;

         }

         public Panel getPanel() {

             return panel;

         }

         public void setPanel(Panel panel) {

             this.panel = panel;

         }

     }

     class KSItemLabelPanelPair {

         private KSItemLabel ksItemLabel;

         private Panel panel;

         public KSItemLabelPanelPair(KSItemLabel ksItemLabel, Panel panel) {

             setKsItemLabel(ksItemLabel);

             setPanel(panel);

         }

         public KSItemLabel getKsItemLabel() {

             return ksItemLabel;

         }

         public void setKsItemLabel(KSItemLabel ksItemLabel) {

             this.ksItemLabel = ksItemLabel;

         }

         public Panel getPanel() {

             return panel;

         }

         public void setPanel(Panel panel) {

             this.panel = panel;

         }

     }

     public static class Picker extends KSPicker {

         private String name;

         private LookupMetadata initLookupMetadata;

         private List<LookupMetadata> additionalLookupMetadata;

         public Picker(LookupMetadata inLookupMetadata, List<LookupMetadata> additionalLookupMetadata) {

             super(inLookupMetadata, additionalLookupMetadata);

             this.initLookupMetadata = inLookupMetadata;

             this.additionalLookupMetadata = additionalLookupMetadata;

         }

         public String getName() {

             return name;

         }

         public void setName(String name) {

             this.name = name;

         }

         public LookupMetadata getInitLookupMetadata() {

             return initLookupMetadata;

         }

         public void setInitLookupMetadata(LookupMetadata initLookupMetadata) {

             this.initLookupMetadata = initLookupMetadata;

         }

         public List<LookupMetadata> getAdditionalLookupMetadata() {

             return additionalLookupMetadata;

         }

         public void setAdditionalLookupMetadata(List<LookupMetadata> additionalLookupMetadata) {

             this.additionalLookupMetadata = additionalLookupMetadata;

         }

     }

     public class CluSetBinding extends ModelWidgetBindingSupport<HasDataValue> {

         private HasDataValueBinding binding = HasDataValueBinding.INSTANCE;

         @Override

         public void setModelValue(HasDataValue widget, DataModel model, String path) {

             binding.setModelValue(widget, model, path);

         }

         @Override

         public void setWidgetValue(HasDataValue widget, DataModel model, String path) {

             binding.setWidgetValue(widget, model, path);

         }

     }

     public class CluSetRangeBinding extends ModelWidgetBindingSupport<HasDataValue> {

         private HasDataValueBinding binding = HasDataValueBinding.INSTANCE;

         private CluSetRangeDataHelper clusetRangeModelHelper = null;

         public CluSetRangeBinding(CluSetRangeDataHelper clusetRangeModelHelper) {

             this.clusetRangeModelHelper = clusetRangeModelHelper;

         }

         @Override

         public void setModelValue(HasDataValue widget, DataModel model, String path) {

             binding.setModelValue(widget, model, path);

         }

         @Override

         public void setWidgetValue(final HasDataValue widget, DataModel model, String path) {

             DataModel middleManModel = new DataModel();

             if (model != null && model.getRoot() != null) {

                 middleManModel = new DataModel(model.getDefinition(), model.getRoot().copy());

             }

             Metadata rangeEditMetaData = model.getMetadata(

                     QueryPath.parse(CommonWidgetConstants.CLU_SET_CLU_SET_RANGE_EDIT_FIELD));

             Data membershipQueryData = (Data)model.get(path);

             MembershipQueryInfo membershipQueryInfo = (membershipQueryData == null)?

                     null : CluSetRangeModelUtil.INSTANCE.toMembershipQueryInfo(membershipQueryData);

             if (membershipQueryInfo != null) {

                 String selectedSearchTypeKey = membershipQueryInfo.getSearchTypeKey();

                 List<LookupMetadata> lookupMDs = new ArrayList<LookupMetadata>();

                 lookupMDs.add(rangeEditMetaData.getInitialLookup());

                 LookupMetadata lookupMetadata = findLookupMetadataByLookupId(selectedSearchTypeKey, 

                         lookupMDs, membershipQueryInfo.getQueryParamValueList());

                 if (lookupMetadata == null || 

                         !nullSafeEquals(lookupMetadata.getName(), 

                                 selectedSearchTypeKey)) {

                     lookupMetadata = findLookupMetadataByLookupId(selectedSearchTypeKey, 

                             rangeEditMetaData.getAdditionalLookups(),

                             membershipQueryInfo.getQueryParamValueList());

                 }

                 SearchRequest searchRequest = new SearchRequest();

                 searchRequest.setSearchKey(selectedSearchTypeKey);

 //              if ()

                 searchRequest.setParams(membershipQueryInfo.getQueryParamValueList());

                 searchRequest.setSortColumn(lookupMetadata.getResultSortKey());

 //                if (showCluRangeDetailsHandlerRegs != null) {

 //                    for (HandlerRegistration showCluRangeDetailsHandlerReg : showCluRangeDetailsHandlerRegs) {

 //                        showCluRangeDetailsHandlerReg.removeHandler();

 //                    }

 //                    showCluRangeDetailsHandlerRegs.clear();

 //                }

                 addClusetItemViewHandler(clusetRangeModelHelper,

                         (KSItemLabel)widget,

                         lookupMetadata,

                         membershipQueryData,

                         searchRequest);

                 ((KSItemLabel)widget).setHighlighted(true);

                 new Timer() {

                     @Override

                     public void run() {

                         ((KSItemLabel)widget).setHighlighted(false);

                     }

                 }.schedule(5000);

             }

             binding.setWidgetValue(widget, middleManModel, path);

         }

     }

 }