Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2015 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.jface.action; /** * A group marker is a special kind of contribution item denoting * the beginning of a group. These groups are used to structure * the list of items. Unlike regular contribution items and * separators, group markers have no visual representation. * The name of the group is synonymous with the contribution item id. * <p> * This class may be instantiated; it is not intended to be * subclassed outside the framework. * </p> * @noextend This class is not intended to be subclassed by clients. */ public class GroupMarker extends AbstractGroupMarker { /** * Create a new group marker with the given name. * The group name must not be <code>null</code> or the empty string. * The group name is also used as the item id. * * @param groupName the name of the group */ public GroupMarker(String groupName) { super(groupName); } /** * The <code>GroupMarker</code> implementation of this method * returns <code>false</code> since group markers are always invisible. */ @Override public boolean isVisible() { return false; } }