| /**************************************************************************** |
| * Copyright (c) 2004 Composent, Inc. 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: |
| * Composent, Inc. - initial API and implementation |
| *****************************************************************************/ |
| |
| package org.eclipse.ecf.presence.ui.roster; |
| |
| import org.eclipse.jface.action.*; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.*; |
| import org.eclipse.ui.actions.CompoundContributionItem; |
| |
| /** |
| * |
| */ |
| public abstract class AbstractPresenceContributionItem extends CompoundContributionItem { |
| |
| protected static final IContributionItem[] EMPTY_ARRAY = new IContributionItem[0]; |
| |
| public AbstractPresenceContributionItem() { |
| super(null); |
| } |
| |
| public AbstractPresenceContributionItem(String id) { |
| super(id); |
| } |
| |
| /** |
| * Get the currently selected model object. |
| * |
| * @return Object that is current workbenchwindow selection. Returns |
| * <code>null</code> if nothing is selected. |
| */ |
| protected Object getSelection() { |
| IWorkbenchWindow ww = PlatformUI.getWorkbench().getActiveWorkbenchWindow(); |
| if (ww != null) { |
| IWorkbenchPage p = ww.getActivePage(); |
| if (p != null) { |
| ISelection selection = p.getSelection(); |
| if (selection != null && selection instanceof IStructuredSelection) |
| return ((IStructuredSelection) selection).getFirstElement(); |
| |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Make IAction instances to return as contribution items. |
| * |
| * @return IAction [] of new actions for contribution to menu. If <code>null</code> then |
| * no contributions are made. |
| */ |
| protected abstract IAction[] makeActions(); |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ecf.presence.ui.roster.AbstractPresenceContributionItem#getContributionItems() |
| */ |
| protected IContributionItem[] getContributionItems() { |
| IAction[] actions = makeActions(); |
| if (actions == null) |
| return EMPTY_ARRAY; |
| // One extra for separator |
| IContributionItem[] items = new IContributionItem[actions.length]; |
| for (int i = 0; i < actions.length; i++) |
| items[i] = new ActionContributionItem(actions[i]); |
| return items; |
| } |
| } |