plugins/org.eclipse.wst.server.ui/serverui/org/eclipse/wst/server/ui/internal/actions/NewWizardAction.java

/*******************************************************************************
 * Copyright (c) 2003, 2005 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.server.ui.internal.actions;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
/**
 * Action to create a new server element through a wizard.
 */
public abstract class NewWizardAction implements IWorkbenchWindowActionDelegate {
	protected IWorkbench workbench;
	protected IStructuredSelection selection;

	/**
	 * NewWizardAction constructor comment.
	 */
	public NewWizardAction() {
		super();
	}

	/**
	 * Disposes this action delegate.  The implementor should unhook any references
	 * to itself so that garbage collection can occur.
	 */
	public void dispose() {
		// do nothing
	}

	/**
	 * Initializes this action delegate with the workbench window it will work in.
	 *
	 * @param window the window that provides the context for this delegate
	 */
	public void init(IWorkbenchWindow window) {
		workbench = window.getWorkbench();
	}

	/**
	 * Notifies this action delegate that the selection in the workbench has changed.
	 * <p>
	 * Implementers can use this opportunity to change the availability of the
	 * action or to modify other presentation properties.
	 * </p>
	 *
	 * @param action the action proxy that handles presentation portion of the action
	 * @param sel the current selection in the workbench
	 */
	public void selectionChanged(IAction action, ISelection sel) {
		if (sel instanceof IStructuredSelection)
			selection = (IStructuredSelection) sel;
		else
			selection = null;
	}
}