Edit D:\app\Administrator\product\11.2.0\dbhome_1\ide\src\javax\ide\menu\spi\MenuModel.java

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

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.ide.command.Controller;
import javax.ide.menu.IDEAction;
import javax.ide.util.MetaClass;

/**
 * The menu model retrieved from extension manifests.
 */
public final class MenuModel 
{
  private final Map _actions = new HashMap();
  private final Map _pullDownMenus = new HashMap();
  private final Map _popupMenus = new HashMap();
  private final Map _toolbars = new HashMap();
  private final Map _actionControllers = new HashMap();
  private final Set /*<MetaClassFactory>*/ _itemFactories = 
    new HashSet();

void addAction( IDEAction action )
  {
    _actions.put( action.getID(), action );
  }
  
  boolean isUniqueActionId( String id )
  {
    return !_actions.containsKey( id );
  }

Toolbar findOrCreateToolbar( String id )
  {
    Toolbar toolbar =  (Toolbar) _toolbars.get( id );
    if ( toolbar == null )
    {
      toolbar = new Toolbar( id );
      _toolbars.put( id, toolbar );
    }
    return toolbar;
  }
  
  MenuBar findOrCreatePullDownMenu( String id )
  {
    MenuBar mc =  (MenuBar) _pullDownMenus.get( id );
    if ( mc == null )
    {
      mc = new MenuBar( id );
      _pullDownMenus.put( id, mc );
    }
    return mc;
  }
  
  PopupMenu findOrCreatePopupMenu( String id )
  {
    PopupMenu mc =  (PopupMenu) _popupMenus.get( id );
    if ( mc == null )
    {
      mc = new PopupMenu( id );
      _popupMenus.put( id, mc );
    }
    return mc;
  }
  
  void addItemFactory( MetaClass itemFactory )
  {
    _itemFactories.add( new MetaClassWrapper( itemFactory ) );
  }
  
  /**
   * Get a set of ids of all actions that have registered controllers.
   * The action ids in this collection may be a superset of the set of all
   * registered action ids.
   * 
   * @return a set of action ids for which there are controllers (or
   *    overridden controllers).
   */
  public Set /*<String>*/ getActionsWithControllers()
  {
    return _actionControllers.keySet();
  }
  
  /**
   * Get all declaratively registered controllers for the specified action
   * id.
   * 
   * @param actionId an action id.
   * @return a list of controllers.
   */
  public List /*<Controller>*/ getControllers( String actionId )
  {
    List list = (List) _actionControllers.get( actionId );
    if ( list == null )
    {
      return Collections.EMPTY_LIST;
    }
    return Collections.unmodifiableList( list );
  }
  
  void addController( String actionId, Controller controller )
  {
    List controllers = (List) _actionControllers.get( actionId );
    if ( controllers == null )
    {
      controllers = new ArrayList();
      _actionControllers.put( actionId, controllers );
    }
    controllers.add( controller );
  }

/**
   * Get all actions in the model.
   * 
   * @return the map of actions. Keys are action ids, values are IDEAction
   *    instances.
   */
  public Map /*<String,IDEAction> */ getActions()
  {
    return _actions;
  }
  
  /**
   * Get all menu bars in the model
   * 
   * @return the map of menu bars. Keys are menu bar ids, values are 
   *    MenuBar instances.
   */
  public Map /*<String,MenuBar> */ getMenuBars()
  {
    return _pullDownMenus;
  }
  
  /**
   * Get all pull down menus in the model.
   * 
   * @return the map of menus. Keys are menu ids, values are MenuItemContainer
   *    instances.
   */
  public Map /*<String,PopupMenu> */ getPopupMenus()
  {
    return _popupMenus;
  }
  
  
  /**
   * Get all toolbars in the model.
   * 
   * @return the map of toolbars. Keys are toolbar ids, values are Toolbar
   *    instances.
   */
  public Map /*<String,Toolbar>*/ getToolbars()
  {
    return _toolbars;
  }
  
  /**
   * Get all registered <tt>ItemFactory</tt> instances.
   * 
   * @return all item factories.
   */
  public Collection /*<ItemFactory>*/ getItemFactories()
  {
    ArrayList al = new ArrayList();
    for ( Iterator i = _itemFactories.iterator(); i.hasNext(); )
    {
      MetaClassWrapper mcw = (MetaClassWrapper) i.next();
      try
      {
        al.add( mcw.getInstance() );
      }
      catch ( Exception e )
      {
        e.printStackTrace();
      }
    }
    
    return Collections.unmodifiableCollection( al );
  }
  
  /**
   * This is generally useful, should move elsewhere.
   */
  private class MetaClassWrapper
  {
    private MetaClass _metaClass;
    private Object _instance;
    
    MetaClassWrapper( MetaClass mc )
    {
      _metaClass = mc;
    }
    
    public Object getInstance()
      throws ClassNotFoundException, IllegalAccessException, InstantiationException
    {
      if (_instance == null)
      {
        _instance = _metaClass.newInstance();
      }
      return _instance;
    }
  }
}

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