gcube-ckan-datacatalog/src/main/java/org/gcube/portlets/gcubeckan/gcubeckandatacatalog/client/CkanEventHandlerManager.java

package org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client;

import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.EditMetadataEvent;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.EditMetadataEventHandler;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.InsertMetadataEvent;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.InsertMetadataEventHandler;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.ShowHomeEvent;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.ShowHomeEventHandler;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.ShowStatisticsEvent;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.ShowStatisticsEventHandler;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.ShowUserDatasetsEvent;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.ShowUserDatasetsEventHandler;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.ShowUserOrganizationsEvent;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.event.ShowUserOrganizationsEventHandler;
import org.gcube.portlets.gcubeckan.gcubeckandatacatalog.client.view.GCubeCkanDataCatalogPanel;
import org.gcube.portlets.widgets.ckandatapublisherwidget.client.ui.CreateDatasetForm;

import com.github.gwtbootstrap.client.ui.Modal;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;


/**
 *
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 * @author Costantino Perciante costantino.perciante@isti.cnr.it
 * Jun 10, 2016
 */
public class CkanEventHandlerManager {

	private HandlerManager eventBus = new HandlerManager(null);
	private GCubeCkanDataCatalogPanel panel;

	/**
	 *
	 */
	public CkanEventHandlerManager() {
		bind();
	}


	/**
	 * @param panel the panel to set
	 */
	public void setPanel(GCubeCkanDataCatalogPanel panel) {
		this.panel = panel;
	}



	private void bind() {
		
		// bind on show home event
		eventBus.addHandler(ShowHomeEvent.TYPE, new ShowHomeEventHandler() {
			
			@Override
			public void onShowHome(ShowHomeEvent showHomeEvent) {
				
				// redirect
				String baseUrlCkanConnector = panel.getBaseURLCKANConnector();
				panel.instanceCkanFrame(baseUrlCkanConnector);
				
			}
		});

		// bind on insert metadata
		eventBus.addHandler(InsertMetadataEvent.TYPE, new InsertMetadataEventHandler() {

			@Override
			public void onInsertMetadata(InsertMetadataEvent loadSelecteReleaseEvent) {

				final Modal modal = new Modal(true, true);

				// request who's doing the insert
				GCubeCkanDataCatalog.service.getUser(new AsyncCallback<String>() {

					@Override
					public void onSuccess(String username) {

						if(username != null){
							modal.setTitle("Publish Product");
							modal.addStyleName("insert-metadata-modal-style");
							modal.add(new CreateDatasetForm(username));
							modal.setCloseVisible(true);
							modal.show();
						}
						else
							Window.alert("Please, logout and login again then retry.");

					}

					@Override
					public void onFailure(Throwable caught) {

						Window.alert("Please, logout and login again then retry.");

					}
				});
			}
		});

		// bind on edit (TODO)
		eventBus.addHandler(EditMetadataEvent.TYPE, new EditMetadataEventHandler() {

			@Override
			public void onEditMetadata(EditMetadataEvent editMetadataEvent) {
				// TODO Auto-generated method stub

			}
		});

		// show datasets event
		eventBus.addHandler(ShowUserDatasetsEvent.TYPE, new ShowUserDatasetsEventHandler() {

			@Override
			public void onShowDatasets(ShowUserDatasetsEvent showUserDatasetsEvent) {

//				// get the current path
//				String currentPath = Window.Location.getHref();
//
//				// check if the "path" parameter is already present
//				String currentParameter = Window.Location.getParameter(GCubeCkanDataCatalog.GET_PATH_PARAMETER);
//
//				// the final path must be
//				String queryPar = "?"  + GCubeCkanDataCatalog.GET_PATH_PARAMETER + "=" + "/dashboard/datasets";
//
//				String finalPath;
//
//				if(currentParameter == null){
//					finalPath = currentPath + queryPar;
//
//				}else{
//
//					// remove from the first "path" on
//					int index = currentPath.lastIndexOf("?"+GCubeCkanDataCatalog.GET_PATH_PARAMETER);
//					String firstPartOfThePath = currentPath.substring(0, index);
//					finalPath = firstPartOfThePath + queryPar; 
//
//				}
//
//				// redirect
//				Window.Location.assign(finalPath);
				
				// redirect
				String baseUrlCkanConnector = panel.getBaseURLCKANConnector();
				baseUrlCkanConnector += "/dashboard/datasets";
				panel.instanceCkanFrame(baseUrlCkanConnector);

			}
		});

		eventBus.addHandler(ShowUserOrganizationsEvent.TYPE, new ShowUserOrganizationsEventHandler() {

			@Override
			public void onShowOrganizations(
					ShowUserOrganizationsEvent showUserDatasetsEvent) {

				// get the current path
				String currentPath = Window.Location.getHref();

				// check if the "path" parameter is already present
				String currentParameter = Window.Location.getParameter(GCubeCkanDataCatalog.GET_PATH_PARAMETER);

				// the final path must be
				String queryPar = "?"  + GCubeCkanDataCatalog.GET_PATH_PARAMETER + "=" + "/dashboard/organizations";

				String finalPath;

				if(currentParameter == null){
					finalPath = currentPath + queryPar;

				}else{

					// remove from the first "path" on
					int index = currentPath.lastIndexOf("?"+GCubeCkanDataCatalog.GET_PATH_PARAMETER);
					String firstPartOfThePath = currentPath.substring(0, index);
					finalPath = firstPartOfThePath + queryPar; 

				}

				// redirect
				Window.Location.assign(finalPath);

			}
		});
		
		// show statistics event
		eventBus.addHandler(ShowStatisticsEvent.TYPE, new ShowStatisticsEventHandler() {
			
			@Override
			public void onShowStatistics(ShowStatisticsEvent showStatisticsEvent) {
				
				// get the current path
				String currentPath = Window.Location.getHref();

				// check if the "path" parameter is already present
				String currentParameter = Window.Location.getParameter(GCubeCkanDataCatalog.GET_PATH_PARAMETER);

				// the final path must be
				String queryPar = "?"  + GCubeCkanDataCatalog.GET_PATH_PARAMETER + "=" + "/stats";

				String finalPath;

				if(currentParameter == null){
					finalPath = currentPath + queryPar;

				}else{

					// remove from the first "path" on
					int index = currentPath.lastIndexOf("?"+GCubeCkanDataCatalog.GET_PATH_PARAMETER);
					String firstPartOfThePath = currentPath.substring(0, index);
					finalPath = firstPartOfThePath + queryPar; 

				}

				// redirect
				Window.Location.assign(finalPath);
				
			}
		});

	}

	/**
	 * @return
	 */
	public HandlerManager getEventBus() {
		return eventBus;
	}
}