content: /*******************************************************************************
   * Copyright (c) 2000, 2008 IBM Corporation and others.
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.actions;
  
  import org.eclipse.core.resources.IResource;
  import org.eclipse.jface.action.IMenuManager;
  import org.eclipse.jface.action.MenuManager;
  import org.eclipse.jface.viewers.ISelection;
  import org.eclipse.jface.viewers.IStructuredSelection;
  import org.eclipse.ui.IWorkbenchSite;
  import org.eclipse.ui.actions.ActionGroup;
  import org.eclipse.ui.actions.NewWizardMenu;
  import org.eclipse.wst.jsdt.core.IJavaScriptElement;
  import org.eclipse.wst.jsdt.ui.IContextMenuConstants;
  
  
  /**
   * Action group that adds the 'new' menu to a context menu.
   * <p>
   * This class may be instantiated; it is not intended to be subclassed.
   * </p>
   * 
   * 
   */
  public class NewWizardsActionGroup extends ActionGroup {
  
  	private IWorkbenchSite fSite;
  	
  	/**
  	 * Creates a new <code>NewWizardsActionGroup</code>. The group requires
  	 * that the selection provided by the part's selection provider is of type <code>
  	 * org.eclipse.jface.viewers.IStructuredSelection</code>.
  	 * 
  	 * @param site the view part that owns this action group
  	 */
  	public NewWizardsActionGroup(IWorkbenchSite site) {
  		fSite= site;
  	}
  	
  
  	/* (non-Javadoc)
  	 * Method declared in ActionGroup
  	 */
  	public void fillContextMenu(IMenuManager menu) {
  		super.fillContextMenu(menu);
  		
  		ISelection selection= getContext().getSelection();
  		if (selection instanceof IStructuredSelection) {
  			IStructuredSelection sel= (IStructuredSelection) selection;
  			if (sel.size() <= 1 && isNewTarget(sel.getFirstElement())) {
  		        MenuManager newMenu = new MenuManager(ActionMessages.NewWizardsActionGroup_new);
  		        menu.appendToGroup(IContextMenuConstants.GROUP_NEW, newMenu);
  		        newMenu.add(new NewWizardMenu(fSite.getWorkbenchWindow()));
  			}
  		}		
  		
  	}
  	
  	private boolean isNewTarget(Object element) {
  		if (element == null)
  			return true;
  		if (element instanceof IResource) {
  			return true;
  		}
  		if (element instanceof IJavaScriptElement) {
  			int type= ((IJavaScriptElement)element).getElementType();
  			return type == IJavaScriptElement.JAVASCRIPT_PROJECT ||
  				type == IJavaScriptElement.PACKAGE_FRAGMENT_ROOT || 
  				type == IJavaScriptElement.PACKAGE_FRAGMENT ||
  				type == IJavaScriptElement.JAVASCRIPT_UNIT ||
  				type == IJavaScriptElement.TYPE;
  		}
  		return false;
  	}	
  
  }
  