package org.gcube.portlets.user.td.columnwidget.client.batch;

import java.util.ArrayList;
import java.util.List;

import org.gcube.portlets.user.td.columnwidget.client.ChangeColumnTypeDialog;
import org.gcube.portlets.user.td.columnwidget.client.dimension.CodelistSelectionListener;
import org.gcube.portlets.user.td.gwtservice.shared.tr.TabResource;
import org.gcube.portlets.user.td.gwtservice.shared.tr.batch.Occurences;
import org.gcube.portlets.user.td.widgetcommonevent.shared.TRId;

import com.allen_sauer.gwt.log.client.Log;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.web.bindery.event.shared.EventBus;
import com.sencha.gxt.core.client.IdentityValueProvider;
import com.sencha.gxt.core.client.Style.SelectionMode;
import com.sencha.gxt.data.client.loader.RpcProxy;
import com.sencha.gxt.data.shared.ListStore;
import com.sencha.gxt.data.shared.loader.ListLoadConfig;
import com.sencha.gxt.data.shared.loader.ListLoadResult;
import com.sencha.gxt.data.shared.loader.ListLoader;
import com.sencha.gxt.data.shared.loader.LoadResultListStoreBinding;
import com.sencha.gxt.widget.core.client.FramedPanel;
import com.sencha.gxt.widget.core.client.form.TextField;
import com.sencha.gxt.widget.core.client.grid.CheckBoxSelectionModel;
import com.sencha.gxt.widget.core.client.grid.ColumnConfig;
import com.sencha.gxt.widget.core.client.grid.ColumnModel;
import com.sencha.gxt.widget.core.client.grid.Grid;
import com.sencha.gxt.widget.core.client.grid.RowNumberer;

/**
 * 
 * @author "Giancarlo Panichi" 
 * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
 *
 */
public class BatchReplacePanel extends FramedPanel implements
		CodelistSelectionListener {
	protected String WIDTH = "640px";
	protected String HEIGHT = "520px";
	protected EventBus eventBus;
	protected ChangeColumnTypeDialog parent;
	protected TextField label = null;
	protected TRId trId;
	protected String columnName;
	
	protected ListLoader<ListLoadConfig, ListLoadResult<Occurences>> loader;
	protected Grid<Occurences> grid;
	
	public BatchReplacePanel(TRId trId, String columnName, EventBus eventBus) {
		setWidth(WIDTH);
		setHeight(HEIGHT);
		setHeaderVisible(false);
		setBodyBorder(false);
		this.trId = trId;
		this.columnName = columnName;
		this.eventBus = eventBus;
		Log.debug("Create BatchReplacePanel(): [" + trId.toString()+" , columnName:"+columnName + "]");
		create();
	}
	
	
	protected void create(){
		
		IdentityValueProvider<Occurences> identity=new IdentityValueProvider<Occurences>();
		CheckBoxSelectionModel<Occurences> sm = new CheckBoxSelectionModel<Occurences>(
				identity);

		RowNumberer<Occurences> number = new RowNumberer<Occurences>(identity);
		
		OccurencesProperties props = GWT.create(OccurencesProperties.class);

		
		ColumnConfig<Occurences, String> valueCol = new ColumnConfig<Occurences, String>(
				props.value());
		ColumnConfig<Occurences, Integer> numberCol = new ColumnConfig<Occurences, Integer>(
				props.number());

		
		List<ColumnConfig<Occurences, ?>> l = new ArrayList<ColumnConfig<Occurences, ?>>();
		l.add(number);
		l.add(valueCol);
		l.add(numberCol);
		ColumnModel<Occurences> cm = new ColumnModel<Occurences>(l);

		ListStore<Occurences> store = new ListStore<Occurences>(props.id());

		RpcProxy<ListLoadConfig, ListLoadResult<Occurences>> proxy = new RpcProxy<ListLoadConfig, ListLoadResult<Occurences>>() {

			public void load(ListLoadConfig loadConfig,
					final AsyncCallback<ListLoadResult<Occurences>> callback) {
				loadData(loadConfig, callback);
			}
		};
		loader = new ListLoader<ListLoadConfig, ListLoadResult<Occurences>>(
				proxy);

		loader.setRemoteSort(false);
		loader.addLoadHandler(new LoadResultListStoreBinding<ListLoadConfig, Occurences, ListLoadResult<Occurences>>(
				store) {
		});

		grid = new Grid<Occurences>(store, cm) {
			@Override
			protected void onAfterFirstAttach() {
				super.onAfterFirstAttach();
				Scheduler.get().scheduleDeferred(new ScheduledCommand() {

					public void execute() {
						loader.load();
					}
				});
			}
		};

		sm.setSelectionMode(SelectionMode.MULTI);
		grid.setLoader(loader);
		grid.setSelectionModel(sm);
		//grid.getView().setAutoExpandColumn(labelCol);
		//grid.setHeight(360);
		grid.getView().setStripeRows(true);
		grid.getView().setColumnLines(true);
	    grid.getView().setAutoFill(true);
		grid.setBorders(false);
		grid.setLoadMask(true);
		grid.setColumnReordering(true);
		grid.setColumnResize(false);
		
		
	}

	
	protected void loadData(ListLoadConfig loadConfig,
			final AsyncCallback<ListLoadResult<Occurences>> callback) {
		/*TDGWTServiceAsync.INSTANCE.getColumns(trId,
				new AsyncCallback<ArrayList<Occurences>>() {

					public void onFailure(Throwable caught) {
						Log.error("load columns failure:"
								+ caught.getLocalizedMessage());
						alert("Error retrieving columns",
								"Error retrieving columns");
						callback.onFailure(caught);
					}

					public void onSuccess(ArrayList<ColumnData> result) {
						Log.trace("loaded " + result.size() + " ColumnData");
						callback.onSuccess(new ListLoadResultBean<ColumnData>(
								result));

					}

				});
		 */
	}
	

	@Override
	public void selected(TabResource tabResource) {
		// TODO Auto-generated method stub
		
	}


	@Override
	public void aborted() {
		// TODO Auto-generated method stub
		
	}


	@Override
	public void failed(String reason, String detail) {
		// TODO Auto-generated method stub
		
	}
}