addcontactaction.java

Eclipse Rich Client Platform Designing Coding and Packaging Java Applications的源代码

/*******************************************************************************
 * Copyright (c) 2005 Jean-Michel Lemieux, Jeff McAffer 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
 *
 * Hyperbola is an RCP application developed for the book
 *     Eclipse Rich Client Platform - 
 *         Designing, Coding, and Packaging Java Applications
 * See http://eclipsercp.org
 *
 * Contributors:
 *     Jean-Michel Lemieux and Jeff McAffer - initial API and implementation
 *******************************************************************************/
package org.eclipsercp.hyperbola;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.eclipsercp.hyperbola.model.ContactsEntry;
import org.eclipsercp.hyperbola.model.ContactsGroup;

public class AddContactAction extends Action implements ISelectionListener,
		ActionFactory.IWorkbenchAction {
	private final IWorkbenchWindow window;

	public final static String ID = "org.eclipsercp.hyperbola.addContact";

	private IStructuredSelection selection;

	public AddContactAction(IWorkbenchWindow window) {
		this.window = window;
		setId(ID);
		setText("&Add Contact...");
		setToolTipText("Add a contact to your contacts list.");
		setImageDescriptor(AbstractUIPlugin.imageDescriptorFromPlugin(
				Application.PLUGIN_ID, IImageKeys.ADD_CONTACT));
		window.getSelectionService().addSelectionListener(this);
	}

	public void dispose() {
		window.getSelectionService().removeSelectionListener(this);
	}

	public void selectionChanged(IWorkbenchPart part, ISelection incoming) {
		// Selection containing elements
		if (incoming instanceof IStructuredSelection) {
			selection = (IStructuredSelection) incoming;
			setEnabled(selection.size() == 1
					&& selection.getFirstElement() instanceof ContactsGroup);
		} else {
			// Other selections, for example containing text or of other kinds.
			setEnabled(false);
		}
	}

	public void run() {
		AddContactDialog d = new AddContactDialog(window.getShell());
		int code = d.open();
		if (code == Window.OK) {
			Object item = selection.getFirstElement();
			ContactsGroup group = (ContactsGroup) item;
			ContactsEntry entry = new ContactsEntry(group, d.getUserId(), d
					.getNickname(), d.getServer());
			group.addEntry(entry);
		}
	}

}