/**
 * 
 */
package org.gcube.portlets.user.td.csvimportwidget.client.csvgrid;

import java.util.ArrayList;

import org.gcube.portlets.user.td.csvimportwidget.client.data.CSVRow;
import org.gcube.portlets.user.td.csvimportwidget.client.dataresource.ResourceBundle;

import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.sencha.gxt.core.client.ValueProvider;
import com.sencha.gxt.widget.core.client.grid.GridView;
import com.sencha.gxt.widget.core.client.grid.GridViewConfig;
import com.sencha.gxt.widget.core.client.menu.CheckMenuItem;
import com.sencha.gxt.widget.core.client.menu.Item;
import com.sencha.gxt.widget.core.client.menu.Menu;

/**
 * 
 * @author "Giancarlo Panichi" 
 * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
 *
 */
public class CSVGridView extends GridView<CSVRow> {
	
	protected ArrayList<Integer> excludedColumns = new ArrayList<Integer>();
	
	public CSVGridView()
	{
		setViewConfig(new GridViewConfig<CSVRow>() {
			
		
			public String getRowStyle(CSVRow model, int rowIndex) {
				return "";
			}
			
			public String getColStyle(CSVRow model, ValueProvider<? super CSVRow, ?> valueProvider, int rowIndex, int colIndex) {
				return excludedColumns.contains(colIndex)?ResourceBundle.INSTANCE.importCss().getColumnExcluded():"";
			}
		});
	}

	@Override
	protected Menu createContextMenu(final int colIndex) {
		Menu menu = new Menu();
		
		CheckMenuItem includeMenu = new CheckMenuItem("Include");
		includeMenu.setGroup("include");
		includeMenu.setChecked(!excludedColumns.contains(colIndex));
		menu.add(includeMenu);

		includeMenu.addSelectionHandler(new SelectionHandler<Item>() {
			
		
			public void onSelection(SelectionEvent<Item> event) {
				excludedColumns.remove(new Integer(colIndex));
				refresh(false);
			}
		});


		CheckMenuItem excludeMenu = new CheckMenuItem("Exclude");
		excludeMenu.setGroup("include");
		excludeMenu.setChecked(excludedColumns.contains(colIndex));
		menu.add(excludeMenu);
		
		excludeMenu.addSelectionHandler(new SelectionHandler<Item>() {
			
			public void onSelection(SelectionEvent<Item> event) {
				excludedColumns.add(colIndex);
				refresh(false);
			}
		});

		
		return menu;
	}

	/**
	 * Returns the excluded columns by index.
	 * @return an {@link ArrayList} of excluded column index.
	 */
	public ArrayList<Integer> getExcludedColumns() {
		return excludedColumns;
	}

}