/*
 * Copyright 2005 by Oracle USA
 * 500 Oracle Parkway, Redwood Shores, California, 94065, U.S.A.
 * All rights reserved.
 */
package javax.ide.menu.spi;


import javax.ide.extension.ElementContext;
import javax.ide.extension.ElementName;
import javax.ide.extension.ElementStartContext;
import javax.ide.extension.ElementVisitor;
import javax.ide.extension.ExtensionHook;
import javax.ide.extension.I18NCharVisitor;
import javax.ide.extension.I18NStringVisitor;
import javax.ide.extension.IconVisitor;
import javax.ide.util.IconDescription;

/**
 * Handler for menu in a menu bar.
 */
class MenuVisitor extends PositionableVisitor
{
  static final ElementName MENU = new ElementName( 
    ExtensionHook.MANIFEST_XMLNS, "menu" );

  private final static ElementName LABEL = new ElementName(
    ExtensionHook.MANIFEST_XMLNS, "label" );
  private final static ElementName MNEMONIC = new ElementName(
    ExtensionHook.MANIFEST_XMLNS, "mnemonic" );
  private final static ElementName TOOLTIP = new ElementName(
    ExtensionHook.MANIFEST_XMLNS, "tooltip" );    
  private final static ElementName ICONPATH = new ElementName(
    ExtensionHook.MANIFEST_XMLNS, "iconpath" );  

  private ElementVisitor _sectionVisitor; // = new SectionVisitor();


  protected void positionable(ElementStartContext context, String id,
    String before, String after)
  {
    MenuBar menuBar = 
      (MenuBar) context.getScopeData().get( MenusVisitor.KEY_MENU_BAR );
    Menu menu = menuBar.getMenu( id );

    if ( menu == null )
    {
      menu = new Menu( id );
      menuBar.addMenu( menu );
    }
        
    processMenu( context, menu, before, after );
  }
  
  protected final void processMenu( ElementStartContext context, final Menu menu, 
    String before, String after )
  {
    if ( before != null ) menu.setBefore( before );
    else if ( after != null ) menu.setAfter( after );

    if ( _sectionVisitor == null )
    {
      _sectionVisitor = new SectionVisitor();
    }

    context.getScopeData().put( MenuHook.KEY_SECTION_CONTAINER, menu );
    context.registerChildVisitor( SectionVisitor.SECTION, _sectionVisitor );
    
    context.registerChildVisitor( LABEL, new I18NStringVisitor() 
    {
      protected void string( ElementContext context, String string )
      {
        menu.setLabel( string );
      }
    });
    
    context.registerChildVisitor( MNEMONIC, new I18NCharVisitor() 
    {
      protected void characterValue( ElementContext context, char c )
      {
        menu.setMnemonic( c );
      }
    });      
    
    context.registerChildVisitor( TOOLTIP, new I18NStringVisitor() 
    {
      protected void string( ElementContext context, String string )
      {
        menu.setTooltip( string );
      }
    });      
    
    context.registerChildVisitor( ICONPATH, new IconVisitor() 
    {
      protected void icon( ElementContext context, IconDescription icon )
      {
        menu.setIcon( icon );
      }
    });      
    
  }

}