/**
 *
 */

package org.gcube.portlets.user.performfishanalytics.client.view.totest;

import java.util.List;

import org.gcube.portlets.user.performfishanalytics.client.controllers.PerformFishAnalyticsController;
import org.gcube.portlets.user.performfishanalytics.client.event.SelectedKPIEvent;
import org.gcube.portlets.user.performfishanalytics.client.view.KPICell;
import org.gcube.portlets.user.performfishanalytics.shared.KPI;

import com.google.gwt.cell.client.Cell;
import com.google.gwt.cell.client.CheckboxCell;
import com.google.gwt.cell.client.CompositeCell;
import com.google.gwt.cell.client.FieldUpdater;
import com.google.gwt.cell.client.HasCell;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.view.client.SingleSelectionModel;

/**
 * The Class LeafCell.
 *
 * @author Francesco Mangiacrapa at ISTI-CNR (francesco.mangiacrapa@isti.cnr.it)
 *         Mar 4, 2019
 */
public class LeafCell extends CompositeCell<KPI> {

	private final SingleSelectionModel<KPI> multiSelectionModel =
		new SingleSelectionModel<KPI>();
	private List<HasCell<KPI, ?>> hasCells;

	/**
	 * @param hasCells
	 */
	public LeafCell(List<HasCell<KPI, ?>> hasCells) {

		super(hasCells);
		this.hasCells = hasCells;

		hasCells.add(new HasCell<KPI, Boolean>() {

			private CheckboxCell cell = new CheckboxCell(true, true);

			public Cell<Boolean> getCell() {

				return cell;
			}

			public FieldUpdater<KPI, Boolean> getFieldUpdater() {

				return new FieldUpdater<KPI, Boolean>() {

					@Override
					public void update(int index, KPI object, Boolean value) {

						// TODO Auto-generated method stub
						GWT.log("Checked: " + object.getName() + " value: " +
							value);
						PerformFishAnalyticsController.eventBus.fireEvent(new SelectedKPIEvent(
							null, object, value));
						// cell.set(value);
						// dataGrid.redraw();
					}
				};
			}

			public Boolean getValue(KPI object) {

				return multiSelectionModel.isSelected(object);
			}
		});
		hasCells.add(new HasCell<KPI, KPI>() {

			private KPICell cell = new KPICell(null);

			public Cell<KPI> getCell() {

				return cell;
			}

			public FieldUpdater<KPI, KPI> getFieldUpdater() {

				return null;
			}

			public KPI getValue(KPI object) {

				return object;
			}
		});
		// TODO Auto-generated constructor stub
	}

	@Override
	public void render(Context context, KPI value, SafeHtmlBuilder sb) {

		sb.appendHtmlConstant("<table><tbody><tr>");
		sb.appendHtmlConstant(value.getName());
		sb.appendHtmlConstant("</tr></tbody></table>");
	}

	@Override
	protected Element getContainerElement(Element parent) {

		// Return the first TR element in the table.
		return parent.getFirstChildElement().getFirstChildElement().getFirstChildElement();
	}

	@Override
	protected <X> void render(
		Context context, KPI value, SafeHtmlBuilder sb, HasCell<KPI, X> hasCell) {

		Cell<X> cell = hasCell.getCell();
		sb.appendHtmlConstant("<td>");
		cell.render(context, hasCell.getValue(value), sb);
		sb.appendHtmlConstant("</td>");
	}
}