| /******************************************************************************* |
| * Copyright (c) 2003, 2007 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.view.servers; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.actions.SelectionProviderAction; |
| |
| import org.eclipse.wst.server.core.IServer; |
| /** |
| * An abstract class for an action on a server. |
| */ |
| public abstract class AbstractServerAction extends SelectionProviderAction { |
| public Shell shell; |
| |
| public AbstractServerAction(Shell shell, ISelectionProvider selectionProvider, String text) { |
| super(selectionProvider, text); |
| this.shell = shell; |
| setEnabled(false); |
| } |
| |
| /** |
| * Return true if this server can currently be acted on. |
| * |
| * @return boolean |
| * @param server org.eclipse.wst.server.core.IServer |
| */ |
| public boolean accept(IServer server) { |
| return true; |
| } |
| |
| /** |
| * Perform action on this server. |
| * @param server org.eclipse.wst.server.core.IServer |
| */ |
| public abstract void perform(IServer server); |
| |
| public void run() { |
| Iterator iterator = getStructuredSelection().iterator(); |
| Object obj = iterator.next(); |
| if (obj instanceof IServer) { |
| IServer server = (IServer) obj; |
| if (accept(server)) |
| perform(server); |
| selectionChanged(getStructuredSelection()); |
| } |
| } |
| |
| /** |
| * Update the enable state. |
| * |
| * @param sel a selection |
| */ |
| public void selectionChanged(IStructuredSelection sel) { |
| if (sel.isEmpty()) { |
| setEnabled(false); |
| return; |
| } |
| boolean enabled = false; |
| Iterator iterator = sel.iterator(); |
| while (iterator.hasNext()) { |
| Object obj = iterator.next(); |
| if (obj instanceof IServer) { |
| IServer server = (IServer) obj; |
| if (accept(server)) |
| enabled = true; |
| } else { |
| setEnabled(false); |
| return; |
| } |
| } |
| setEnabled(enabled); |
| } |
| } |