/**

  * 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.main.client.widgets;

 import java.util.ArrayList;

 import java.util.Arrays;

 import java.util.List;

 import java.util.Map;

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

 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.breadcrumb.BreadcrumbManager;

 import org.kuali.student.common.ui.client.mvc.history.HistoryManager;

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

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

 import org.kuali.student.common.ui.client.theme.Theme;

 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.KSLightBox;

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

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

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

 import org.kuali.student.common.ui.client.widgets.menus.KSMenu.MenuImageLocation;

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

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

 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.event.dom.client.MouseOutEvent;

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

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

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

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

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

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

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

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

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

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

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

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

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

 public class ApplicationHeader extends Composite{

     private static final String LUM_APP_URL                = "lum.application.url";

     private static final String APP_URL                        = "application.url";

     private static final String DOC_SEARCH_URL                = "ks.rice.docSearch.serviceAddress";

     private static final String RICE_URL           = "ks.rice.url";

     private static final String RICE_LINK_LABEL        = "ks.rice.label";

     private static final String APP_VERSION                = "ks.application.version";

     //This property is used to append code server param to urls so links displayed in get dev mode works as intended

     private static final String CODE_SERVER                = "ks.gwt.codeServer"; 

     private ServerPropertiesRpcServiceAsync serverPropertiesRpcService = GWT.create(ServerPropertiesRpcService.class);

         private KSHeader ksHeader = GWT.create(KSHeader.class);

         private StylishDropDown navDropDown = new StylishDropDown("Select an area\u2026");

         private Anchor versionAnchor = new Anchor(" ( Version ) ");

         //private Widget headerCustomWidget = Theme.INSTANCE.getCommonWidgets().getHeaderWidget();

         private SimplePanel content = new SimplePanel();

         private KSLightBox docSearchDialog = new KSLightBox();

         private Frame docSearch;

     private String docSearchUrl = "";

     private String appUrl = "..";

     private String lumAppUrl = "..";

     private String riceURL ="..";

     private String riceLinkLabel="Rice";

     private String appVersion = "";

     private String codeServer = "";

     private boolean loaded = false;

     private static class WrapperNavigationHandler extends NavigationHandler{

                 public WrapperNavigationHandler(String url) {

                         super(url);

                 }

                 @Override

                 public void beforeNavigate(Callback<Boolean> callback) {

                         //FIXME notify current controller of the page change so it can perform an action

                         //FIXME before navigation event

                         callback.exec(true);

                 }

     }

         public ApplicationHeader(){

                 this.initWidget(ksHeader);

         }

         protected void onLoad() {

                 super.onLoad();

                 if (!loaded){

                         List<String> serverPropertyList = Arrays.asList(APP_URL, DOC_SEARCH_URL, LUM_APP_URL,RICE_URL,RICE_LINK_LABEL, APP_VERSION, CODE_SERVER);

                 serverPropertiesRpcService.get(serverPropertyList, new KSAsyncCallback<Map<String,String>>() {

                     public void handleFailure(Throwable caught) {

                             //ignoring, we'll use the default

                             init();

                     }

                     public void onSuccess(Map<String,String> result) {

                         GWT.log("ServerProperties fetched: "+result.toString(), null);

                         if(result != null){

                             appUrl                         = result.get(APP_URL);

                             docSearchUrl        = result.get(DOC_SEARCH_URL);

                             lumAppUrl                 = result.get(LUM_APP_URL);

                             riceURL         = result.get(RICE_URL);

                             riceLinkLabel         = result.get(RICE_LINK_LABEL);

                             appVersion                = result.get(APP_VERSION);

                             if (result.get(CODE_SERVER) != null){

                                     codeServer        = result.get(CODE_SERVER);

                             }

                         }

                         init();

                     }

                 });

                         loaded = false;

                 }

         }

         private void init(){

                 //headerBottomLinks.setVerticalAlignment(HasVerticalAlignment.ALIGN_BOTTOM);

                 createUserDropDown();

                 //headerBottomLinks.add(userDropDown);

                 ksHeader.setHiLabelText("Hi,");

                 ksHeader.setUserName(Application.getApplicationContext().getUserId());

                 Anchor logoutLink = new Anchor(getMessage("wrapperPanelLogout"));

                 logoutLink.addClickHandler(new WrapperNavigationHandler("j_spring_security_logout"));

                 ksHeader.addLogout(logoutLink);

                 ksHeader.addLogout(versionAnchor);

                 //headerBottomLinks.add(logoutLink);

                 createHelpInfo();

                 createNavDropDown();

                 ksHeader.addNavigation(navDropDown);

                 ksHeader.addBottomContainerWidget(BreadcrumbManager.getBreadcrumbPanel());

                 BreadcrumbManager.setParentPanel(ksHeader.getBottomContainer());

                 List<KSLabel> topLinks = new ArrayList<KSLabel>();

                 //FIXME the following code gets overridden

                 topLinks.add(buildLink(riceLinkLabel,riceLinkLabel,riceURL+"/portal.do"));

                 setHeaderCustomLinks(topLinks);

                 navDropDown.addStyleName("KS-Navigation-DropDown");

                 content.addStyleName("KS-Wrapper-Content");

         }

         private void createHelpInfo(){

             versionAnchor.addClickHandler(new ClickHandler(){

                    public void onClick(ClickEvent event) {

                        final PopupPanel helpPopup = new PopupPanel(true);

                        helpPopup.setWidget(new HTML("<br><h3>&nbsp;&nbsp; " + appVersion + "&nbsp;&nbsp;<h3>"));

                        helpPopup.setPopupPositionAndShow(new PopupPanel.PositionCallback() {

                            public void setPosition(int offsetWidth, int offsetHeight) {

                              int left = (Window.getClientWidth() - offsetWidth);

                              int top = 0;

                              helpPopup.setPopupPosition(left, top);

                            }

                        });

                    }

             });

         }

         private void createUserDropDown() {

                 List<KSMenuItemData> items = new ArrayList<KSMenuItemData>();

             items.add(new KSMenuItemData(getMessage("wrapperPanelLogout"),new WrapperNavigationHandler("j_spring_security_logout")));

         }

         private void createNavDropDown() {

                 navDropDown.setImageLocation(MenuImageLocation.LEFT);

                 List<KSMenuItemData> items = new ArrayList<KSMenuItemData>();

                 items.add(new KSMenuItemData(getMessage("wrapperPanelTitleHome"),Theme.INSTANCE.getCommonImages().getApplicationIcon(),

                             new ClickHandler(){

                                         @Override

                                         public void onClick(ClickEvent event) {

                                                 HistoryManager.navigate(AppLocations.Locations.HOME.getLocation());

                                         }}));

                 items.add(new KSMenuItemData(getMessage("wrapperPanelTitleCurriculumManagement"),Theme.INSTANCE.getCommonImages().getBookIcon(),

                             new ClickHandler(){

                                         @Override

                                         public void onClick(ClickEvent event) {

                                                 HistoryManager.navigate(AppLocations.Locations.CURRICULUM_MANAGEMENT.getLocation());

                                         }}));

             items.add(new KSMenuItemData(getMessage("wrapperPanelTitleOrg"), Theme.INSTANCE.getCommonImages().getPeopleIcon(),

                             new WrapperNavigationHandler(lumAppUrl+"/org.kuali.student.core.organization.ui.OrgEntry/OrgEntry.jsp"))

             );

             items.add(new KSMenuItemData(getMessage("wrapperPanelTitleWorkflowDocSearch"), Theme.INSTANCE.getCommonImages().getNodeIcon(),

                             new ClickHandler(){

                                         @Override

                                         public void onClick(ClickEvent event) {

                                                 buildDocSearchPanel();

                                                 docSearchDialog.show();

                                         }})

             );

             items.add(new KSMenuItemData(getMessage("wrapperPanelTitleRice"), Theme.INSTANCE.getCommonImages().getRiceIcon(),

                             new WrapperNavigationHandler(

                                             riceURL+"/portal.do?selectedTab=main"))

             );

             navDropDown.setItems(items);

             navDropDown.setArrowImage(Theme.INSTANCE.getCommonImages().getDropDownIconWhite());

         }

         public void setContent(Widget wrappedContent){

                 content.setWidget(wrappedContent);

         }

         public void setHeaderCustomLinks(List<KSLabel> links){

                 for(KSLabel link: links){

                         FocusPanel panel = new FocusPanel();

                         panel.setWidget(link);

                         //headerTopLinks.add(panel);

                         panel.addStyleName("KS-Wrapper-Header-Custom-Link-Panel");

                         link.addStyleName("KS-Wrapper-Header-Custom-Link");

                 }

         }

         public void setFooterLinks(List<KSLabel> links){

                 for(KSLabel link: links){

                         //footer.add(link);

                         link.addStyleName("KS-Wrapper-Footer-Link");

                 }

         }

     private KSLabel buildLink(final String text, final String title, final String actionUrl) {

         //Using KSLabel for now - couldn't change color for Anchor

         final KSLabel link = new KSLabel(text);

         link.addStyleName("KS-Header-Link");

         link.setTitle(title);

         link.addMouseOverHandler(new MouseOverHandler() {

             @Override

             public void onMouseOver(MouseOverEvent event) {

                 link.addStyleName("KS-Header-Link-Focus");

             }});

         link.addMouseOutHandler(new MouseOutHandler() {

             @Override

             public void onMouseOut(MouseOutEvent event) {

                 link.removeStyleName("KS-Header-Link-Focus");

             }});

         link.addClickHandler(new ClickHandler() {

             @Override

             public void onClick(ClickEvent event) {

                 Window.Location.assign(actionUrl);

             }});

         return link;

     }

     //Method to build the light box for the doc search

     private void buildDocSearchPanel(){

             if (docSearch == null){

                 docSearch = new Frame();

                     docSearch.setSize("700px", "500px");

                 docSearch.setUrl(docSearchUrl);

                 VerticalPanel docSearchPanel = new VerticalPanel();

                 docSearchPanel.add(docSearch);

                 KSButton closeActionButton = new KSButton(getMessage("wrapperPanelClose"));

                 closeActionButton.addClickHandler(new ClickHandler(){

                     public void onClick(ClickEvent event) {

                         docSearchDialog.hide();

                     }

                 });

                 docSearchPanel.add(closeActionButton);

                 docSearchDialog.setWidget(docSearchPanel);

             }

     }

     private static String getMessage(final String messageId) {

         return Application.getApplicationContext().getMessage(messageId);

     }

 }