package org.kuali.student.lum.lu.ui.dependency.client.views;

 import java.util.ArrayList;

 import java.util.Arrays;

 import java.util.HashMap;

 import java.util.HashSet;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

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

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

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

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

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

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

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

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

 import org.kuali.student.common.ui.client.application.KSAsyncCallback;

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

 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.mvc.ViewComposite;

 import org.kuali.student.common.ui.client.service.MetadataRpcService;

 import org.kuali.student.common.ui.client.service.MetadataRpcServiceAsync;

 import org.kuali.student.common.ui.client.service.SearchRpcService;

 import org.kuali.student.common.ui.client.service.SearchRpcServiceAsync;

 import org.kuali.student.common.ui.client.util.UtilConstants;

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

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

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

 import org.kuali.student.common.ui.client.widgets.KSButtonAbstract.ButtonStyle;

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

 import org.kuali.student.common.ui.client.widgets.field.layout.layouts.VerticalFieldLayout;

 import org.kuali.student.common.ui.client.widgets.filter.FilterEvent;

 import org.kuali.student.common.ui.client.widgets.filter.FilterEventHandler;

 import org.kuali.student.common.ui.client.widgets.filter.FilterResetEventHandler;

 import org.kuali.student.common.ui.client.widgets.filter.KSFilterOptions;

 import org.kuali.student.common.ui.client.widgets.headers.KSDocumentHeader;

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

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

 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.CollapsablePanel;

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

 import org.kuali.student.common.ui.client.widgets.suggestbox.KSSuggestBox;

 import org.kuali.student.common.ui.client.widgets.suggestbox.IdableSuggestOracle.IdableSuggestion;

 import org.kuali.student.core.statement.dto.ReqCompFieldInfo;

 import org.kuali.student.core.statement.dto.ReqComponentInfo;

 import org.kuali.student.core.statement.dto.StatementTreeViewInfo;

 import org.kuali.student.core.statement.ui.client.widgets.rules.RulePreviewWidget;

 import org.kuali.student.core.statement.ui.client.widgets.rules.RulesUtil;

 import org.kuali.student.lum.common.client.lu.LUUIConstants;

 import org.kuali.student.lum.common.client.widgets.AppLocations;

 import org.kuali.student.lum.common.client.widgets.CluSetDetailsWidget;

 import org.kuali.student.lum.common.client.widgets.CluSetRetriever;

 import org.kuali.student.lum.common.client.widgets.CluSetRetrieverImpl;

 import org.kuali.student.lum.lu.ui.dependency.client.controllers.DependencyAnalysisController;

 import org.kuali.student.lum.lu.ui.dependency.client.controllers.DependencyAnalysisController.DependencyViews;

 import org.kuali.student.lum.lu.ui.dependency.client.service.DependencyAnalysisRpcService;

 import org.kuali.student.lum.lu.ui.dependency.client.service.DependencyAnalysisRpcServiceAsync;

 import org.kuali.student.lum.lu.ui.dependency.client.widgets.DependencyResultPanel;

 import org.kuali.student.lum.lu.ui.dependency.client.widgets.DependencyResultPanel.DependencyTypeSection;

 import org.kuali.student.lum.lu.ui.tools.client.configuration.ClusetView.Picker;

 import org.kuali.student.lum.program.dto.ProgramRequirementInfo;

 import com.google.gwt.core.client.GWT;

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

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

 import com.google.gwt.http.client.URL;

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

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

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

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

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

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

 public class DependencyAnalysisView extends ViewComposite{

         private static CluSetRetriever cluSetRetriever = new CluSetRetrieverImpl();

     protected final BlockingTask initializingTask = new BlockingTask("Loading");

     protected DependencyAnalysisRpcServiceAsync depRpcServiceAsync = GWT.create(DependencyAnalysisRpcService.class);

     protected MetadataRpcServiceAsync metadataServiceAsync = GWT.create(MetadataRpcService.class);

     protected SearchRpcServiceAsync searchServiceAsync = GWT.create(SearchRpcService.class);

         private ModelDefinition searchDefinition;

         private VerticalFieldLayout container = new VerticalFieldLayout();

         protected boolean initialized = false;

         protected String selectedCourseId;

         protected String selectedCourseCd;

         protected String selectedCourseName;

         protected DependencyResultPanel depResultPanel;

         protected KSFilterOptions dependencyFilter;

         protected HorizontalBlockFlowPanel resultContainer = new HorizontalBlockFlowPanel();

         private final BlockingTask loadDataTask = new BlockingTask("Retrieving Data");

         private KSDocumentHeader header;

         public DependencyAnalysisView(Controller controller) {

                 super(controller, "Dependency Analysis", DependencyViews.MAIN);

         this.initWidget(container);

         this.addStyleName("blockLayout");

         this.addStyleName("ks-dependency-container");

         }

         @Override

         public void beforeShow(final Callback<Boolean> onReadyCallback) {

         if (!initialized) {

                     KSBlockingProgressIndicator.addTask(initializingTask);

                     //This loads search definitions for the dependency analysis search 

             metadataServiceAsync.getMetadata("dependency", null, null, new KSAsyncCallback<Metadata>(){

                 @Override

                 public void handleFailure(Throwable caught) {

                     KSBlockingProgressIndicator.removeTask(initializingTask);

                     throw new RuntimeException("Failed to load search definitions.", caught);                        

                 }

                 @Override

                 public void onSuccess(Metadata result) {

                         searchDefinition = new DataModelDefinition(result);

                         init();

                         onReadyCallback.exec(true);                        

                     initialized = true;

                     KSBlockingProgressIndicator.removeTask(initializingTask);

                 }                

             });                

         } else {

                 onReadyCallback.exec(true);

         }

         }

         protected void init(){                

                 this.header = new KSDocumentHeader();

         header.setTitle("Dependency Analysis");        

         //Get search definition for dependency analysis trigger search and create trigger picker          

                 Metadata metaData = searchDefinition.getMetadata("courseId");

                 final KSPicker triggerPicker = new Picker(metaData.getInitialLookup(), metaData.getAdditionalLookups());

         ((HasWatermark)triggerPicker.getInputWidget()).setWatermarkText("Enter course code");        

         triggerPicker.getInputWidget().ensureDebugId("Dependency-Analysis-Course-Code");

         //Setup the "go" button for trigger picker

         KSButton goButton = new KSButton("Go", ButtonStyle.PRIMARY_SMALL);

                 goButton.addClickHandler(new ClickHandler(){

                         @Override

                         public void onClick(ClickEvent event) {                                

                 selectedCourseId = triggerPicker.getValue().toString();

                 KSSuggestBox suggestBox = (KSSuggestBox)triggerPicker.getInputWidget();

                 IdableSuggestion selectedSuggestion = suggestBox.getCurrentSuggestion();

                 // We need to make sure we only search for courses that have been selected from the suggest box

                 if(selectedSuggestion != null && selectedSuggestion.getReplacementString().equalsIgnoreCase(suggestBox.getText())){

                         selectedCourseName = selectedSuggestion.getAttrMap().get("lu.resultColumn.luOptionalLongName");

                         if (!selectedCourseId.equals(UtilConstants.IMPOSSIBLE_CHARACTERS)){

                                             KSBlockingProgressIndicator.addTask(loadDataTask);

                                 selectedCourseCd = triggerPicker.getDisplayValue();                

                                 if (depResultPanel != null){

                                         resultContainer.remove(depResultPanel);

                                 }

                                 depResultPanel = new DependencyResultPanel();

                                 depResultPanel.setHeaderTitle(selectedCourseCd + " - " + selectedCourseName);                

                                 resultContainer.add(depResultPanel);

                                 resultContainer.setVisible(true);

                                 updateDependencyResults();

                                 ((DependencyAnalysisController) DependencyAnalysisView.this.getController()).showExport(isExportButtonActive());

                                 header.showPrint(true);

                                 header.setPrintContent(depResultPanel); // we only want to print the results panel

                         }

                 }

                         }

                 });

         //Create search section with the trigger picker and go button

                 HorizontalPanel pickerPanel = new HorizontalPanel();

                 pickerPanel.add(triggerPicker);

                 pickerPanel.add(goButton);

                 FlowPanel searchPanel = new FlowPanel();

                 searchPanel.addStyleName("ks-dependency-search");

                 searchPanel.add(new KSLabel("Search for item to view its dependencies"));

                 searchPanel.add(pickerPanel);                

                 //Add widgets to view

                 container.setTitleWidget(header);

                 container.addStyleName("blockLayout");

         container.addWidget(searchPanel);

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

         metaData = searchDefinition.getMetadata("filter");

         lookups.add(metaData.getInitialLookup());

         dependencyFilter = new KSFilterOptions(metaData.getAdditionalLookups());

         dependencyFilter.addFilterEventHandler(new FilterEventHandler(){

                         @Override

                         public void onDeselect(FilterEvent e) {

                                 depResultPanel.hide(e.getFilterKey(), e.getFilterValue());

                         }

                         @Override

                         public void onSelect(FilterEvent e) {

                                 if (e.isInitialSelect()){

                                         depResultPanel.hideAll();

                                 }

                                 depResultPanel.show(e.getFilterKey(), e.getFilterValue());                        

                         }

         });

         dependencyFilter.addFilterResetEventHandler(new FilterResetEventHandler(){

                         @Override

                         public void onReset() {

                                 depResultPanel.showAll();                                

                         }                

         });

         resultContainer.add(dependencyFilter);

         resultContainer.setVisible(false);

         container.addWidget(resultContainer);

         }

         /*

          * This method calls the dependency analysis search with the selected trigger from the picker,

          * and updates the DependencyResultPanel with the results from the search. 

          */

         protected void updateDependencyResults(){

                 //Setup up sections for DependencyResultPanel                

                 depResultPanel.addSection(LUUIConstants.DEP_SECTION_COURSE,"Course Dependencies");                

                 depResultPanel.addSection(LUUIConstants.DEP_SECTION_PROGRAM,"Program Dependencies");

                 depResultPanel.addSection(LUUIConstants.DEP_SECTION_COURSE_SET, "Course Set Inclusions");                

                 dependencyFilter.reset();

                 //Setup and invoke the dependency analysis search and process the results

                 SearchRequest searchRequest = new SearchRequest();

                 searchRequest.setSearchKey("lu.search.dependencyAnalysis");

                 SearchParam searchParam = new SearchParam();

                 searchParam.setKey("lu.queryParam.luOptionalCluId");

                 searchParam.setValue(selectedCourseId);                                

                 searchRequest.getParams().add(searchParam);

                 searchServiceAsync.search(searchRequest, new KSAsyncCallback<SearchResult>(){

                         @Override

                         public void onSuccess(SearchResult searchResults) {                                

                                 for (SearchResultRow searchResultRow : searchResults.getRows ()) {

                                         //TODO: This should not use hard-coded result columns 

                                         String cluCode = "";

                                         String cluName = "";

                                         String cluType = "";

                                         String dependencyType = "";

                                         String dependencyTypeName = "";

                                         String reqComponentIds = "";

                                         String reqRootId = "";

                                         String cluId = "";

                                         String curriculumOversightNames = "";

                                         String dependencySectionKey = "";

                                         Boolean diffAdminOrg = false;

                                         String parentCluId = "";

                                         for (SearchResultCell searchResultCell : searchResultRow.getCells ()){

                                                 if (searchResultCell.getKey().equals ("lu.resultColumn.luOptionalCode")) {

                                                         cluCode = searchResultCell.getValue();        

                                                 } if (searchResultCell.getKey().equals ("lu.resultColumn.cluId")) {

                                                         cluId = searchResultCell.getValue();

                                                 } else if (searchResultCell.getKey().equals("lu.resultColumn.luOptionalLongName")){

                                                         cluName = searchResultCell.getValue();

                                                 } else if (searchResultCell.getKey().equals("lu.resultColumn.cluType")){

                                                         cluType = searchResultCell.getValue();

                                                         if (cluType.equals(LUUIConstants.CLU_TYPE_CREDIT_COURSE)){

                                                                 dependencySectionKey = LUUIConstants.DEP_SECTION_COURSE;

                                                         } else if (cluType != null){

                                                                 dependencySectionKey = LUUIConstants.DEP_SECTION_PROGRAM;

                                                         }

                                                 } else if (searchResultCell.getKey().equals("lu.resultColumn.luOptionalDependencyType")){

                                                         dependencyType = searchResultCell.getValue();

                                                         if (dependencyType.equals("cluSet")){

                                                                 dependencySectionKey = LUUIConstants.DEP_SECTION_COURSE_SET;

                                                         } else if (LUUIConstants.DEP_TYPE_JOINT.equals(dependencyType) || 

                                                                                 LUUIConstants.DEP_TYPE_CROSS_LISTED.equals(dependencyType)){

                                                                 dependencySectionKey = LUUIConstants.DEP_SECTION_COURSE;;

                                                         }

                                                 } else if (searchResultCell.getKey().equals("lu.resultColumn.luOptionalDependencyTypeName")){

                                                         dependencyTypeName = searchResultCell.getValue();

                                                 } else if (searchResultCell.getKey().equals("lu.resultColumn.luOptionalDependencyRequirementComponentIds")){

                                                         reqComponentIds = searchResultCell.getValue();

                                                 } else if (searchResultCell.getKey().equals("lu.resultColumn.luOptionalDependencyRootId")){

                                                         reqRootId = searchResultCell.getValue();

                                                 } else if (searchResultCell.getKey().equals("lu.resultColumn.luOptionalOversightCommitteeNames")){

                                                         curriculumOversightNames = searchResultCell.getValue();

                                                 } else if (searchResultCell.getKey().equals("lu.resultColumn.luOptionalDependencyRequirementDifferentAdminOrg")){

                                                         diffAdminOrg = ("true").equals(searchResultCell.getValue());

                                                 } else if (searchResultCell.getKey().equals("lu.resultColumn.parentCluId")){

                                                         parentCluId = searchResultCell.getValue();

                                                 }

                                         }

                                         //Get the dependency type section to add the dependency to, create new one if this is the first dependency for the t

                                         DependencyTypeSection typeSection = depResultPanel.getDependencyTypeSection(dependencySectionKey, dependencyType);

                                         if (typeSection == null){                                                

                                                 typeSection = depResultPanel.addDependencyTypeSection(dependencySectionKey, dependencyType, getDependencyTypeLabel(dependencySectionKey, dependencyType, dependencyTypeName));

                                         }

                                         //If dependency has details, create the details widget

                                         VerticalFieldLayout depDetails = null;

                                         if (hasDependencyDetails(dependencyType)){

                                                 depDetails = getDependencyDetails(dependencySectionKey, dependencyType, cluCode, reqRootId, reqComponentIds);

                                                 KSLabel curricOversightLabel = new KSLabel("Curriculum Oversight: " + curriculumOversightNames);

                                                 curricOversightLabel.addStyleName("ks-dependency-oversight");

                                                 depDetails.addWidget(curricOversightLabel);

                                         }

                                         //Add the dependency to the dependency section

                                         typeSection.addDependencyItem(getDependencyLabel(dependencySectionKey, dependencyType, cluId, cluCode, cluName, cluType, diffAdminOrg, parentCluId), depDetails);

                                 }

                                 depResultPanel.finishLoad();

                                 KSBlockingProgressIndicator.removeTask(loadDataTask);

                         }

                 });

         }

         private VerticalFieldLayout getDependencyDetails(String dependencySectionKey, String dependencyType, final String cluCode, final String rootId, String reqComponentIds){

                 VerticalFieldLayout depDetails = new VerticalFieldLayout();

                 depDetails.addStyleName("KS-Dependency-Details");

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

                         List<String> reqComponentIdList = Arrays.asList(reqComponentIds.split(","));

                         final VerticalFlowPanel simpleRequirement = new VerticalFlowPanel();                        

                         simpleRequirement.addStyleName("KS-Dependency-Simple-Rule");

                         //For programs, add ability to display both the simple requirement and complex requirement for the details

                         if (LUUIConstants.DEP_SECTION_PROGRAM.equals(dependencySectionKey)){

                                 final KSButton complexReqLabel = new KSButton("Display complex requirement", ButtonStyle.DEFAULT_ANCHOR);

                                 final KSButton simpleReqLabel = new KSButton("Display simple requirement", ButtonStyle.DEFAULT_ANCHOR);

                                 //Initialize the complex requirement panel, set it so it is not initially open (ie. not visible)

                                 final FlowPanel complexContent = new FlowPanel();

                                 final CollapsablePanel complexRequirement = GWT.create(CollapsablePanel.class);

                                 complexRequirement.initialise("", complexContent, false, false);

                                 complexContent.addStyleName("KS-Dependency-Complex-Rule");

                                 depDetails.addWidget(simpleRequirement);

                                 depDetails.addWidget(complexRequirement);

                                 depDetails.addWidget(complexReqLabel);

                                 depDetails.addWidget(simpleReqLabel);

                                 simpleReqLabel.setVisible(false);

                                 //Click handler to display the complex requirement, which will go and fetch the requirement components

                                 //if displaying for first time.

                                 complexReqLabel.addClickHandler(new ClickHandler(){

                                         public void onClick(ClickEvent event) {

                                                 simpleReqLabel.setVisible(true);

                                                 simpleRequirement.setVisible(false);

                                                 complexReqLabel.setVisible(false);

                                                 if (complexContent.getWidgetCount() <= 0){

                                                         KSBlockingProgressIndicator.addTask(loadDataTask);

                                                         //TODO: This code copied from program screens, need common reusable code

                                                         depRpcServiceAsync.getProgramRequirement(rootId, new KSAsyncCallback<ProgramRequirementInfo>(){

                                                                 public void onSuccess(ProgramRequirementInfo progReqInfo) {                                                                                                                        

                                                                 int minCredits = (progReqInfo.getMinCredits() == null ? 0 : progReqInfo.getMinCredits());

                                                                 int maxCredits = (progReqInfo.getMaxCredits() == null ? 0 : progReqInfo.getMaxCredits());

                                                                 String plainDesc = (progReqInfo.getDescr() == null ? "" : progReqInfo.getDescr().getPlain());

                                                                 final RulePreviewWidget rulePreviewWidget = new RulePreviewWidget(1, progReqInfo.getShortTitle(),

                                                                         getTotalCreditsString(minCredits, maxCredits),

                                                                         plainDesc, progReqInfo.getStatement(),

                                                                         true, getCluSetWidgetList(progReqInfo.getStatement()));

                                                                 complexContent.add(rulePreviewWidget);

                                                                 KSBlockingProgressIndicator.removeTask(loadDataTask);

                                                                         complexRequirement.open();

                                                                 }                                                        

                                                         });

                                                 } else {

                                                         complexRequirement.open();

                                                 }

                                         }                                        

                                 });

                                 //Click handler to display the simple requirement only

                                 simpleReqLabel.addClickHandler(new ClickHandler(){

                                         public void onClick(ClickEvent event) {

                                                 complexReqLabel.setVisible(true);                                                

                                                 complexRequirement.close();

                                                 simpleRequirement.setVisible(true);

                                                 simpleReqLabel.setVisible(false);                                                

                                         }

                                 });

                         } else {

                                 depDetails.addWidget(simpleRequirement);

                         }

                         depRpcServiceAsync.getRequirementComponentNL(reqComponentIdList, new KSAsyncCallback<List<String>>(){

                                 public void onSuccess(List<String> results) {

                                         for (String reqCompNL:results){

                                                 int codeIdx = reqCompNL.indexOf(selectedCourseCd);

                                                 SpanPanel requirement = new SpanPanel();

                                                 requirement.setHTML(reqCompNL.substring(0,codeIdx) + 

                                                                 " <b>" + selectedCourseCd + "</b>" + reqCompNL.substring(codeIdx + selectedCourseCd.length()));

                                                 simpleRequirement.add(requirement);

                                         }                                                                

                                 }                                                        

                         });

                 }

                 return depDetails;

         }

         //This generates the label for the dependency type section (eg. Pre-req requirement, course set inclusion, etc).

         private SpanPanel getDependencyTypeLabel(String dependencySectionKey, String dependencyType, String dependencyTypeName) {

                 SpanPanel header = new SpanPanel();

                 if (dependencyType.equals("joint") || dependencyType.equals("crossListed")){

                         header.setHTML("<b>" + selectedCourseCd + "</b> is <b>" + dependencyTypeName + "</b> with the following ");

                 } else if (dependencySectionKey.equals("course sets")){

                         header.setHTML("<b>" + selectedCourseCd + "</b> belongs to the following course sets");

                 } else {

                         header.setHTML("<b>" + selectedCourseCd + "</b> is a/an <b>" + dependencyTypeName + "</b> for the following " + dependencySectionKey);                        

                 }

             header.setStyleName("KS-DependencyType-Label");

                 return header;

         }

         /*

          * This generates the title for the actual dependency (eg. course, course set, program), which may include links to 

          * view the actual course, course set or program

          */

         private SpanPanel getDependencyLabel(final String dependencySectionKey, String dependencyType, final String cluId,  String cluCode, String cluName, final String cluType, boolean diffAdminOrg, final String parentCluId){

                 //Figure out the view hyperlink for course/program/course set screen based on dependencyType

                 Anchor viewLinkAnchor = null;

                 final String viewLinkUrl;

                 if (LUUIConstants.CLU_TYPE_CREDIT_COURSE.equals(cluType) && 

                                 !LUUIConstants.DEP_TYPE_CROSS_LISTED.equals(dependencyType)){

                         viewLinkAnchor = new Anchor("View Course");

                         viewLinkUrl = AppLocations.Locations.VIEW_COURSE.toString(); 

                 } else if ("kuali.lu.type.MajorDiscipline".equals(cluType) || "kuali.lu.type.Variation".equals(cluType)){

                         viewLinkAnchor = new Anchor("View Program ");

                         viewLinkUrl = AppLocations.Locations.VIEW_PROGRAM.toString(); 

                 } else if ("kuali.lu.type.CoreProgram".equals(cluType)){

                         viewLinkAnchor = new Anchor("View Program ");

                         viewLinkUrl = AppLocations.Locations.VIEW_CORE_PROGRAM.toString(); 

                 } else if (cluType.startsWith("kuali.lu.type.credential")){

                         viewLinkAnchor = new Anchor("View Program ");

                         viewLinkUrl = AppLocations.Locations.VIEW_BACC_PROGRAM.toString(); 

                 } else if (LUUIConstants.DEP_TYPE_COURSE_SET.equals(dependencyType)){

                         viewLinkAnchor = new Anchor("View Course Set");

                         viewLinkUrl = AppLocations.Locations.VIEW_CLU_SET.toString();

                 } else {

                         viewLinkUrl = null;

                 }

                 //Add click handler to open new window for user to view the course/program/cluset in more detail

                 if (viewLinkAnchor != null){

                     viewLinkAnchor.addStyleName("KS-Dependency-View-Link");

                 viewLinkAnchor.addClickHandler(new ClickHandler(){

                                 @Override

                                 public void onClick(ClickEvent event) {

                                         String url =  "http://" + Window.Location.getHost() + Window.Location.getPath() +

                                                 "?view=" + viewLinkUrl;

                                         if("kuali.lu.type.Variation".equals(cluType)){

                                                 url += "&docId=" + URL.encodeQueryString(parentCluId) + "&variationId=" + URL.encodeQueryString(cluId);

                                         }else {

                                                 url += "&docId=" + URL.encodeQueryString(cluId);

                                         }

                                         String features = "height=600,width=960,dependent=0,directories=1," +

                                                         "fullscreen=1,location=1,menubar=1,resizable=1,scrollbars=1,status=1,toolbar=1";

                                         Window.open(url, HTMLPanel.createUniqueId(), features);                                

                                 }

                         });

                 }                

                 //Determine if we need to display differing org highlight

                 String orgHighlight = (diffAdminOrg ? " <span class=\"ks-dependency-highlight\">Different Org</span> ":"");

                 //Create dependency item header label

                 String headerLabel = "";

                 if (LUUIConstants.DEP_TYPE_CROSS_LISTED.equals(dependencyType)){

                         headerLabel = cluCode + " - " + selectedCourseName + orgHighlight;

                 } else if (LUUIConstants.DEP_TYPE_COURSE_SET.equals(dependencyType)){

                         headerLabel = cluName;

                 } else {

                         headerLabel = cluCode + " - " + cluName + orgHighlight;

                 }

                 //Build header widget to return

                 SpanPanel header = new SpanPanel();                

                 header.setStyleName("KS-DependencyType-Label");        

                 header.setHTML(headerLabel);

                 if (viewLinkAnchor != null){

                         header.add(viewLinkAnchor);

                 }

                 return header;                

         }

         protected boolean hasDependencyDetails(String dependencyType){

                 //Only course and programs have dependency details, since there could be multiple program types, easier to

                 //check those that don't have details to show.

                 return !(LUUIConstants.DEP_TYPE_JOINT.equals(dependencyType) || 

                                         LUUIConstants.DEP_TYPE_CROSS_LISTED.equals(dependencyType) || 

                                         LUUIConstants.DEP_TYPE_COURSE_SET.equals(dependencyType));

         }

     private String getTotalCreditsString(int min, int max) {

         return "Expected Total Credits:" + min + "-" + max;

     }

     //TODO: This code copied from Program summary, need to create reusable version for this and program summary

     protected Map<String, Widget> getCluSetWidgetList(StatementTreeViewInfo rule) {

         Map<String, Widget> widgetList = new HashMap<String, Widget>();

         Set<String> cluSetIds = new HashSet<String>();

         findCluSetIds(rule, cluSetIds);

         for (String clusetId : cluSetIds) {

             widgetList.put(clusetId, new CluSetDetailsWidget(clusetId, cluSetRetriever));

         }

         return widgetList;

     }

     //TODO: This code copied from Program summary, need to create reusable version for this and program summary

     private void findCluSetIds(StatementTreeViewInfo rule, Set<String> list) {

         List<StatementTreeViewInfo> statements = rule.getStatements();

         List<ReqComponentInfo> reqComponentInfos = rule.getReqComponents();

         if ((statements != null) && (statements.size() > 0)) {

             // retrieve all statements

             for (StatementTreeViewInfo statement : statements) {

                 findCluSetIds(statement, list); // inside set the children of this statementTreeViewInfo

             }

         } else if ((reqComponentInfos != null) && (reqComponentInfos.size() > 0)) {

             // retrieve all req. component LEAFS

             for (ReqComponentInfo reqComponent : reqComponentInfos) {

                 List<ReqCompFieldInfo> fieldInfos = reqComponent.getReqCompFields();

                 for (ReqCompFieldInfo fieldInfo : fieldInfos) {

                     if (RulesUtil.isCluSetWidget(fieldInfo.getType())) {

                         list.add(fieldInfo.getValue());

                     }

                 }

             }

         }

     }

         public KSDocumentHeader getHeader() {

                 return header;

         }

         @Override

         public boolean isExportButtonActive() {

                 return true;

         }

         public DependencyResultPanel getDepResultPanel() {

                 return depResultPanel;

         }

 }