package e4s.tutorial;

import e4s.html.*;
import e4s.html.navigation.E4Menu;
import e4s.html.navigation.E4MenuFrameset;
import e4s.servlet.E4ModuleImplementation;

/**
 * Style examples for menus.
 *
 * {@tutorial Example_MenuStyles}
 */
public class Example_MenuStyles extends E4ModuleImplementation
{
   public static E4Method start = null;
   public static E4Method choose = null;
   public static E4Method menu = null;
   public static E4Method functionA = null;
   public static E4Method functionB = null;
   public static E4Method functionC = null;
   
   private final static String PARAM_MENU_STYLE = "MSTYLE";

   private final static int MENU_STYLES[] = { E4Menu.MENU_STYLE_IMAGES_A,
                                              E4Menu.MENU_STYLE_IMAGES_B1,
                                              E4Menu.MENU_STYLE_IMAGES_B2,
                                              E4Menu.MENU_STYLE_IMAGES_B3,
                                              E4Menu.MENU_STYLE_IMAGES_B4, 
                                              E4Menu.MENU_STYLE_IMAGES_C1,
                                              E4Menu.MENU_STYLE_IMAGES_C2,
                                              E4Menu.MENU_STYLE_IMAGES_C3,
                                              E4Menu.MENU_STYLE_IMAGES_D1, 
                                              E4Menu.MENU_STYLE_IMAGES_D2, 
                                              E4Menu.MENU_STYLE_IMAGES_E1 };

   private final static String MENU_NAMES[] = { "A", "B1", "B2", "B3", "B4", "C1", "C2", "C3", "D1", "D2", "E1" };

   private final static E4FrameName FRAME_MENU = E4FrameName.ANY();
   
   public void start( HTML html, E4CgiParams params )
   throws Exception
   {
      FRAMESET frameset = html.FRAMESET(FRAMESET._FRAMESET_COLS);
      
      FRAME fChoose = frameset.FRAME(200);
      fChoose.setUrl(choose);
      
      FRAME fMenu = frameset.FRAME(FRAME_MENU, "*");
      fMenu.setUrl(menu);
   }

   /**
    * Choose a style for the menu
    */
   public void choose( HTML html, E4CgiParams params )
   throws Exception
   {
      html.print("Choose a style:");
      html.P();
      
      for( int i = 0; i < MENU_STYLES.length; i++ )
      {
         A href = html.A(menu);
         href.addParameter(PARAM_MENU_STYLE,MENU_STYLES[i]);
         href.setTarget(FRAME_MENU);
         href.print("Style " + MENU_NAMES[i]);
         html.BR();
      }
   }
   
   public void menu( HTML html, E4CgiParams params )
   throws Exception
   {
      int style = params.getInt(PARAM_MENU_STYLE);
      
      if (style == -1)
         style = E4Menu.MENU_STYLE_IMAGES_A;
      
      E4MenuFrameset mFrameset = html.MenuFrameset("MENUEXAMPLE.3",style,getServlet());
      // mFrameset.setColorBaseline(E4Color.Soft(E4Color.RED,0.5f));
      
      // add a menu item, remember the created ID of this item (which propably might be 1)
      // and mark it as the active menu item
      int id = mFrameset.addMenuItem( "Function A",new A(functionA));
      mFrameset.changeActive(id);
      
      // add other menu items
      mFrameset.addMenuItem( "Function B",functionB);
      mFrameset.addMenuItem( "Function C",functionC);
   }

   public void functionA( HTML html )
   {
      html.println("-- A --");
   }

   public void functionB( HTML html )
   {
      html.println("-- B --");
   }
   
   public void functionC( HTML html )
   {
      html.println("-- C --");
   }

// public void menuExampleSimpleVert( HTML html )
//   throws Exception
// {
//    int style = E4Menu.MENU_STYLE_DIRECTION_VERTICAL | E4Menu.MENU_STYLE_REPRESENTATION_TEXT;
//
//    E4MenuFrameset mFrameset = html.MenuFrameset("MENUEXAMPLE",style,getServlet());
//    mFrameset.setColorBaseline(E4Color.Soft(E4Color.RED,0.5f));
//    
//    // add a menu item, remember the created ID of this item (which propably might be 1)
//    // and mark it as the active menu item
//    int id = mFrameset.addMenuItem( "Function - A",functionA);
//    mFrameset.changeActive(id);
//    
//    // add another menu item
//    mFrameset.addMenuItem( "Function - B",functionB);
//    mFrameset.addMenuItem( "C",functionC);
//    mFrameset.addMenuItem( "List",Example_SortedList.startList);
//    mFrameset.addMenuItem( "Tree",Example_Tree.treeExampleB);
//    mFrameset.addMenuItem( "Menu",subMenu);
// }
 

 
   
   
// public void menuExampleVertical( HTML html )
// {
//    int style = E4Menu.MENU_STYLE_DIRECTION_VERTICAL 
//              | E4Menu.MENU_STYLE_REPRESENTATION_GRAFICAL; 
//    
//    E4MenuFrameset mFrameset = html.MenuFrameset("MENUEXAMPLE",style,getServlet());
//    
//    // add two menu items, but do not mark any of them as active
//    mFrameset.addMenuItem( "Function - A",new A(functionA));
//    mFrameset.addMenuItem( "Function - B",new A(functionB));
// }
}