package e4s.tutorial;

import e4s.html.HTML;
import e4s.html.E4Method;
import e4s.html.input.extended.DATEFIELD;
import e4s.html.input.extended.E4Fieldset;
import e4s.html.input.extended.E4InputFieldName;
import e4s.html.input.extended.E4SelectValues;
import e4s.html.input.list.E4InputList;
import e4s.servlet.E4SessionObject_Intf;
import e4s.servlet.E4ModuleImplementation;
import e4s.translate.E4LabelNone;


/**
 * Using input list for multiple input rows.
 *
 * {@tutorial Example_E4InputList}
 *
 * @see e4s.html.input.list.E4InputList
 */
public class Example_InputList extends E4ModuleImplementation
{
   public static E4Method start = null;
   
   private static class TestInput extends E4InputList implements E4SessionObject_Intf
   {
      private final E4InputFieldName FIELD_A = new E4InputFieldName("A");
      private final E4InputFieldName FIELD_B = new E4InputFieldName("B");
      private final E4InputFieldName FIELD_C = new E4InputFieldName("C");
      private final E4InputFieldName FIELD_D = new E4InputFieldName("D");
      private final E4InputFieldName FIELD_E = new E4InputFieldName("E");
      
      public TestInput()
      throws Exception
      {
         E4Fieldset fieldset = new E4Fieldset();

         fieldset.TEXTFIELD(FIELD_A,"Text",10);
         fieldset.SELECT(FIELD_B,"Select",getSelection());
         fieldset.CHECKBOX(FIELD_C,"Check");
         DATEFIELD d = fieldset.DATEFIELD(FIELD_D,"Date");
         d.noTimeFormat();
         fieldset.LONGFIELD(FIELD_E,"Integer");

         setFields(fieldset);
         setShowRowCount(true);
         setCaption(new E4LabelNone("ListInput element"));
         setNewRows(3);
         setPageSize(5);
      }
      
      private E4SelectValues getSelection()
      {
         E4SelectValues res = new E4SelectValues();
         res.addElement(1,new E4LabelNone("Alpha"));
         res.addElement(2,new E4LabelNone("Beta"));
         res.addElement(3,new E4LabelNone("Gamma"));
         return res;
      }

      public int getNumRows()
      {
         return 20;
      }

      public void setRow(int row, E4Fieldset fieldset) 
      throws Exception
      {
         String rnd = "";
         for( int i = 0; i < 8; i++ )
            rnd += (char)('A' + (int)(Math.random() * 26));
         
         fieldset.setValue(FIELD_A,rnd);
         fieldset.setValue(FIELD_B,"Alpha");
         fieldset.setValue(FIELD_C,true);
         fieldset.setValue(FIELD_D,new java.util.Date());
         fieldset.setValue(FIELD_E,10 * (row + 1));
      }

      public void saveRow(int row, boolean deleted, E4Fieldset fieldset) 
      throws Exception
      {
         // here we could save our values
      }
   }

   
   public void start( HTML html ) 
   throws Exception
   {
      TestInput test = new TestInput();
      setSessionObject(test);
      html.BODY().addElement(test);
   }
}