| /******************************************************************************* |
| * Copyright (c) 2000, 2016 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 |
| * Lars Vogel <Lars.Vogel@vogella.com> - Bug 502576 |
| *******************************************************************************/ |
| package org.eclipse.swt.events; |
| |
| |
| import org.eclipse.swt.internal.*; |
| |
| /** |
| * Classes which implement this interface provide a method |
| * that deals with the event that is generated when help is |
| * requested for a control, typically when the user presses F1. |
| * <p> |
| * After creating an instance of a class that implements |
| * this interface it can be added to a control using the |
| * <code>addHelpListener</code> method and removed using |
| * the <code>removeHelpListener</code> method. When help |
| * is requested for a control, the helpRequested method |
| * will be invoked. |
| * </p> |
| * |
| * @see HelpEvent |
| */ |
| @FunctionalInterface |
| public interface HelpListener extends SWTEventListener { |
| |
| /** |
| * Sent when help is requested for a control, typically |
| * when the user presses F1. |
| * |
| * @param e an event containing information about the help |
| */ |
| void helpRequested(HelpEvent e); |
| } |
