content: /*******************************************************************************
   * Copyright (c) 2003, 2010 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.navigator;
  
  import org.eclipse.jface.action.IAction;
  import org.eclipse.jface.action.IMenuManager;
  import org.eclipse.jface.viewers.TreeViewer;
  import org.eclipse.ui.IActionBars;
  import org.eclipse.ui.IViewPart;
  import org.eclipse.ui.actions.ActionContext;
  import org.eclipse.ui.navigator.CommonActionProvider;
  import org.eclipse.ui.navigator.ICommonActionConstants;
  import org.eclipse.ui.navigator.ICommonActionExtensionSite;
  import org.eclipse.ui.navigator.ICommonViewerWorkbenchSite;
  import org.eclipse.wst.jsdt.ui.actions.OpenAction;
  import org.eclipse.wst.jsdt.ui.actions.OpenEditorActionGroup;
  
  
  public class PackageExplorerOpenActionProvider extends CommonActionProvider {
  
  
  	private IAction fOpenAndExpand;
  	private OpenEditorActionGroup fOpenGroup;
  
  	private boolean fInViewPart = false;
  
  	public void fillActionBars(IActionBars actionBars) {
  		if (fInViewPart) {
  			fOpenGroup.fillActionBars(actionBars);
  			
  			if (fOpenAndExpand == null) // TODO: is not updated!
  				actionBars.setGlobalActionHandler(ICommonActionConstants.OPEN, fOpenGroup.getOpenAction());
  			else if (fOpenAndExpand != null)
  				actionBars.setGlobalActionHandler(ICommonActionConstants.OPEN, fOpenAndExpand);
  		}
  
  	}
  
  	public void fillContextMenu(IMenuManager menu) {
  
  		if (fInViewPart) {
  			if (fOpenGroup.getOpenAction().isEnabled()) {
  				fOpenGroup.fillContextMenu(menu);
  			}
  		}
  	}
  
  	public void init(ICommonActionExtensionSite site) {
  
  		ICommonViewerWorkbenchSite workbenchSite = null;
  		if (site.getViewSite() instanceof ICommonViewerWorkbenchSite)
  			workbenchSite = (ICommonViewerWorkbenchSite) site.getViewSite();
  
  		if (workbenchSite != null) {
  			if (workbenchSite.getPart() != null && workbenchSite.getPart() instanceof IViewPart) {
  				IViewPart viewPart = (IViewPart) workbenchSite.getPart();
  
  				fOpenGroup = new OpenEditorActionGroup(viewPart);
  
  				if (site.getStructuredViewer() instanceof TreeViewer)
  				{
  					fOpenAndExpand = new OpenAndExpand(workbenchSite.getSite(), (OpenAction) fOpenGroup.getOpenAction(), (TreeViewer) site.getStructuredViewer());
  					fOpenAndExpand.setActionDefinitionId( "org.eclipse.wst.jsdt.ui.edit.text.java.openandexpand" ); // Make this different from F3 file open handler to avoid handler conflicts
  				}
  				fInViewPart = true;
  			}
  		}
  	}
  
  	public void setContext(ActionContext context) {
  		super.setContext(context);
  		if (fInViewPart) {
  			fOpenGroup.setContext(context);
  		}
  	}
  
  	/*
  	 * @see org.eclipse.ui.actions.ActionGroup#dispose()
  	 * @since 3.5
  	 */
  	public void dispose() {
  		if (fOpenGroup != null)
  			fOpenGroup.dispose();
  		super.dispose();
  	}
  
  }
  