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.refactoring.reorg;
  
  import org.eclipse.core.runtime.CoreException;
  import org.eclipse.jface.action.IAction;
  import org.eclipse.jface.viewers.IStructuredSelection;
  import org.eclipse.ui.ISharedImages;
  import org.eclipse.ui.IWorkbenchSite;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.ui.actions.DeleteResourceAction;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringAvailabilityTester;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.RefactoringExecutionStarter;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.reorg.ReorgUtils;
  import org.eclipse.wst.jsdt.internal.corext.util.JavaModelUtil;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
  import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
  import org.eclipse.wst.jsdt.internal.ui.refactoring.RefactoringMessages;
  import org.eclipse.wst.jsdt.internal.ui.util.ExceptionHandler;
  import org.eclipse.wst.jsdt.ui.actions.SelectionDispatchAction;
  
  
  public class DeleteAction extends SelectionDispatchAction {
  
  	public DeleteAction(IWorkbenchSite site) {
  		super(site);
  		setText(ReorgMessages.DeleteAction_3); 
  		setDescription(ReorgMessages.DeleteAction_4); 
  		ISharedImages workbenchImages= JavaScriptPlugin.getDefault().getWorkbench().getSharedImages();
  		setDisabledImageDescriptor(workbenchImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE_DISABLED));
  		setImageDescriptor(workbenchImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE));
  		setHoverImageDescriptor(workbenchImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE));
  
  		PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.DELETE_ACTION);
  	}
  
  	/*
  	 * @see SelectionDispatchAction#selectionChanged(IStructuredSelection)
  	 */
  	public void selectionChanged(IStructuredSelection selection) {
  		if (ReorgUtils.containsOnlyProjects(selection.toList())) {
  			setEnabled(createWorkbenchAction(selection).isEnabled());
  			return;
  		}
  		try {
  			setEnabled(RefactoringAvailabilityTester.isDeleteAvailable(selection.toArray()));
  		} catch (CoreException e) {
  			//no ui here - this happens on selection changes
  			// http://bugs.eclipse.org/bugs/show_bug.cgi?id=19253
  			if (JavaModelUtil.isExceptionToBeLogged(e))
  				JavaScriptPlugin.log(e);
  			setEnabled(false);
  		}
  	}
  
  	private IAction createWorkbenchAction(IStructuredSelection selection) {
  		DeleteResourceAction action= new DeleteResourceAction(getShell());
  		action.selectionChanged(selection);
  		return action;
  	}
  
  	/* (non-Javadoc)
  	 * @see org.eclipse.wst.jsdt.ui.actions.SelectionDispatchAction#run(org.eclipse.jface.viewers.IStructuredSelection)
  	 */
  	public void run(IStructuredSelection selection) {
  		if (ReorgUtils.containsOnlyProjects(selection.toList())) {
  			createWorkbenchAction(selection).run();
  			return;
  		}
  		try {
  			RefactoringExecutionStarter.startDeleteRefactoring(selection.toArray(), getShell());
  		} catch (CoreException e) {
  			ExceptionHandler.handle(e, RefactoringMessages.OpenRefactoringWizardAction_refactoring, RefactoringMessages.OpenRefactoringWizardAction_exception); 
  		}
  	}
  }
  