tabular-data-unionwizard-widget/src/main/java/org/gcube/portlets/user/td/unionwizardwidget/client/TabResourcesSelectionCard.java

package org.gcube.portlets.user.td.unionwizardwidget.client;

import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
import org.gcube.portlets.user.td.gwtservice.shared.tr.TabResource;
import org.gcube.portlets.user.td.gwtservice.shared.tr.TableData;
import org.gcube.portlets.user.td.gwtservice.shared.tr.union.UnionSession;
import org.gcube.portlets.user.td.wizardwidget.client.WizardCard;

import com.allen_sauer.gwt.log.client.Log;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.sencha.gxt.widget.core.client.Dialog.PredefinedButton;
import com.sencha.gxt.widget.core.client.box.AlertMessageBox;
import com.sencha.gxt.widget.core.client.box.ConfirmMessageBox;
import com.sencha.gxt.widget.core.client.event.HideEvent;
import com.sencha.gxt.widget.core.client.event.HideEvent.HideHandler;

public class TabResourcesSelectionCard extends WizardCard {
	protected UnionSession unionSession;
	protected TabResourcesSelectionCard thisCard;
	protected TabResourcesSelectionPanel tabResourcesSelectionPanel;
	protected TabResource selectedTabResource = null;

	public TabResourcesSelectionCard(final UnionSession unionSession) {
		super("Select Tabular Resource for Union", "");
		Log.debug("TabResourcesSelectionCard");
		this.unionSession = unionSession;
		thisCard = this;

		tabResourcesSelectionPanel = new TabResourcesSelectionPanel(thisCard,res);

		tabResourcesSelectionPanel
				.addSelectionHandler(new SelectionHandler<TabResource>() {

					public void onSelection(SelectionEvent<TabResource> event) {
						unionSession.setUnionTabularResource(tabResourcesSelectionPanel
										.getSelectedItem());
						getWizardWindow().setEnableNextButton(true);
					}

				});

		setContent(tabResourcesSelectionPanel);

	}

	@Override
	public void setup() {
		Log.debug("TabResourcesSelectionCard Call Setup ");
		Command sayNextCard = new Command() {

			public void execute() {
				Log.debug("TabResourcesSelectionCard Call sayNextCard");
				retrieveLastTable();
				
			}

		};

		getWizardWindow().setNextButtonCommand(sayNextCard);

		Command sayPreviousCard = new Command() {
			public void execute() {
				try {
					getWizardWindow().previousCard();
					getWizardWindow().removeCard(thisCard);
					Log.debug("Remove TabResourcesSelectionCard");
				} catch (Exception e) {
					Log.error("sayPreviousCard :" + e.getLocalizedMessage());
				}
			}
		};

		getWizardWindow().setPreviousButtonCommand(sayPreviousCard);
		getWizardWindow().setEnableNextButton(false);
		getWizardWindow().setEnableBackButton(true);
		
		
		
		
		
	}

	protected void retrieveLastTable() {
		getWizardWindow().setEnableNextButton(false);
		getWizardWindow().setEnableBackButton(false);
		
		TDGWTServiceAsync.INSTANCE.getLastTable(unionSession
				.getUnionTabularResource().getTrId(),
				new AsyncCallback<TableData>() {

					@Override
					public void onFailure(Throwable caught) {
						Log.debug("Attention",
								"This tabular resource does not have a valid table");
						AlertMessageBox d = new AlertMessageBox("Attention",
								"This tabular resource does not have a valid table");
						d.addHideHandler(new HideHandler() {

							public void onHide(HideEvent event) {
								deleteTRWithLastTableNull();

							}
						});
						d.show();

					}

					@Override
					public void onSuccess(TableData result) {
						Log.debug("Retrieve last table: " + result);
						updateConnectedTRInfo(result);
					}

				});

	}

	protected void deleteTRWithLastTableNull() {
		final ConfirmMessageBox mb = new ConfirmMessageBox("Delete",
				"Would you like to delete this tabular resource without table?");
		mb.addHideHandler(new HideHandler() {
			public void onHide(HideEvent event) {
				if (mb.getHideButton() == mb.getButtonById(PredefinedButton.YES
						.name())) {
					callDeleteLastTable();
					
				} else if (mb.getHideButton() == mb
						.getButtonById(PredefinedButton.NO.name())) {
					getWizardWindow().setEnableNextButton(true);
					getWizardWindow().setEnableBackButton(true);
				}
			}
		});
		mb.setWidth(300);
		mb.show();

	}
	
	protected void callDeleteLastTable(){
		Log.debug("Delete TR:" + unionSession.getUnionTabularResource()
				.getTrId());
		TDGWTServiceAsync.INSTANCE.removeTabularResource(unionSession.getUnionTabularResource()
				.getTrId(),
				new AsyncCallback<Void>() {

					public void onFailure(Throwable caught) {
						AlertMessageBox d = new AlertMessageBox("Error",
								"Error on delete TabResource: "
										+ caught.getLocalizedMessage());
						d.addHideHandler(new HideHandler() {

							public void onHide(HideEvent event) {
								getWizardWindow().setEnableNextButton(true);
								getWizardWindow().setEnableBackButton(true);

							}
						});
						d.show();
						
					}

					public void onSuccess(Void result) {
						tabResourcesSelectionPanel.gridReload();
						getWizardWindow().setEnableNextButton(false);
						getWizardWindow().setEnableBackButton(true);
					}

				});
	}
	

	protected void updateConnectedTRInfo(TableData table) {
		TabResource tabResource = unionSession.getUnionTabularResource();
		tabResource.setTrId(table.getTrId());
		unionSession.setUnionTabularResource(tabResource);
		Log.debug("UnionSession: " + unionSession);
		goNext();
	}

	protected void goNext() {
		try {
			Log.info("NextCard ColumnMappingCard");
			ColumnMappingCard columnSelectionCard = new ColumnMappingCard(
					unionSession);
			getWizardWindow().addCard(
					columnSelectionCard);
			getWizardWindow().nextCard();
		} catch (Throwable e) {
			Log.error("goNext: " + e.getLocalizedMessage());
		}
	}

}