package e4s.tutorial;

import e4s.html.*;
import e4s.html.input.extended.*;
import e4s.servlet.*;
import e4s.application.sysmodule.*;

import java.io.*;
import java.util.*;
import java.text.*;


/**
 * Pick up a value (e.g. a date from a calendar) while editing a form.
 *
 * {@tutorial Example_Pickup}
 */
public class Example_Pickup extends E4ModuleImplementation
{   
	public static E4Method        startForm = null;
	public static E4MethodPickup pickupMusic = null;
	public static E4Method        viewParameters = null;
	
	
	public void startForm( HTML html )
	{
		BODY body = html.BODY();

		FORM form = body.FORM("TEST");

		// Define a TEXTFIELD and do your own pickup selection
		TEXTFIELD name = form.TEXTFIELD(new E4InputFieldName("MUSIC"),"Your favorite Music",30);
		name.setValue("Rolling Stones");
		name.definePickupList(pickupMusic); 
		form.P();
		
      // Define a Java Script which can be used for notification on value changes
      E4JavaScript jsNotify = body.createScript();
      jsNotify.appendln("function " + jsNotify.getName() + "()");
      jsNotify.appendln("{");
      jsNotify.appendln("   alert('the field value has been changed');");
      jsNotify.appendln("}");
      
		// Define a TEXTFIELD and use standard color selection
		TEXTFIELD color = form.TEXTFIELD(new E4InputFieldName("COLOR"),"Your favorite Color",7);
		color.setValue("#FF0000");
		color.definePickupList(E4ModuleColorPickup.initSelection,jsNotify); 
		form.P();
		
		// Note, that a DATEFIELD automatically gets a pickup for a Calendar
		DATEFIELD next_holiday = form.DATEFIELD(new E4InputFieldName("HOLIDAY"),"My next holiday");
		next_holiday.noTimeFormat();
		form.P();

		// You can avoid this Clendar selection
		DATEFIELD birthday = form.DATEFIELD(new E4InputFieldName("BIRTHDAY"),"Your birthday",false);
	}   
	
	public void pickupMusic( HTML html, E4CgiParams params )
	{
		html.setTitle("Please select");
		
		String default_value = params.get(E4MethodPickup._PARAM_INIT_VALUE);
		
		A view_parameters = html.A(viewParameters);
		view_parameters.print("[view the parameters]");

		String music[] = { "WHO", "REM", "Rolling Stones", "Beatles", "Doors", "Kinks", "Velvet Underground", "Blondie", "Sex Pistols", "PIL" };
		
		TABLE table = html.TABLE();
		table.setBgColor(E4Color.GRAY(10));
		table.setBorder();
		table.setCellspacing(0,0);
		
		for( int i = 0; i < music.length; i++ )
		{
			TD td = table.TR().TD();
			A_ReturnValue returnvalue = td.A_ReturnValue(music[i],params);
			returnvalue.println(music[i]);
			
			if ((default_value != null) && default_value.trim().equalsIgnoreCase(music[i]))
				td.setBgColor(E4Color.YELLOW);
		}  
		
		html.P();
		
		A close = html.A(E4EventHandlerA.closeWindow());
		close.println("[Cancel]");
	}  

	public void viewParameters( HTML html, E4CgiParams p )
	{
		TABLE t = html.TABLE();
		p.toTable(t);
		
		A back = html.A(startForm);
		back.print("[start again]");
	}  
}