package e4s.tutorial;

import e4s.util.E4ID;
import e4s.html.*;
import e4s.html.list.E4SortedList;
import e4s.html.list.E4SortedListElement;
import e4s.html.list.E4SortedList_Intf;
import e4s.html.list.E4SortedListItem;
import e4s.servlet.*;


/**
 * Create a table with dynamic sorting capabilities.
 *
 * {@tutorial Example_SortedList}
 */
public class Example_SortedList extends E4ModuleImplementation
{
	public static E4Method startList = null;
	

	public void startList( HTML html )
	{
		String countries[] = { "France", "Germany", "Germany", "Germany", "Germany", "Austria", "Austria", "Italy" };
		String cities[] = { "Paris", "Berlin", "Cologne", "Munich", "Hamburg", "Vienna", "Klosterneuburg", "Rome" };
		String wind[] = { "NE", "N", "N", null, "N", "SO", "SO", "SW" };
		float temperature[] = { 30f, 31.5f, 29.8f, 34f, 32f, 32.5f, 30.8f, 37.6f };
		
		// create the "list". This is the base object that handles
		// all the functionality and will be stored persistant
		// in a session object while needed. The list must be unique
		// identified by it's ID which is "EXAMPLE_LIST"
		E4SortedList exampleList = new E4SortedList( E4ID(), "EXAMPLE_LIST",getServlet());
		// exampleList.setEnableColumnChange(false);
		exampleList.setBorder();
		exampleList.setCellspacing(0,0);
		
		// now we need the HTML element representing the list. This is done
		// by a call to html.SortedListElement() which now joins the
		// list to the HTML output
		E4SortedListElement exampleListElement = html.SortedListElement(exampleList);
		
		// let's define some header columns for the list now
		exampleList.defineColumn(Align.LEFT,E4LabelNone("Country"));
		exampleList.defineColumn(Align.LEFT,E4LabelNone("City"));
		exampleList.defineColumn(Align.CENTER,E4LabelNone("Wind"));
		exampleList.defineColumn(Align.RIGHT,E4LabelNone("Temp."));
		
		// define a row for the average temperature. This row is used
		// in the header and will not be part of the sort
		E4SortedListItem bootomRow = new E4SortedListItem(4);
		bootomRow.setPrimarySort(E4SortedList_Intf.PRIMARY_SORT_BOTTOM);
		bootomRow.setBgColor(E4Color.LIGHT_BLUE);
		exampleList.addElement(bootomRow);

		float sum = 0.0f;
			
		for( int i = 0; i < countries.length; i++ )
		{
			// create a data row and append it to the list
			
			E4SortedListItem row = new E4SortedListItem(4);
			row.set(0,countries[i]);
			row.set(1,cities[i]);
			row.set(2,wind[i]);
			row.set(3,temperature[i]);
		
			exampleList.addElement(row);
			
			sum += temperature[i];
		}
		
		bootomRow.set(0,"Average");
		bootomRow.set(3,sum / countries.length);
	}
}