| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.taverna.ui.menu; |
| |
| import java.net.URI; |
| |
| /** |
| * A {@link MenuComponent} of the type {@link MenuType#optionGroup}. |
| * <p> |
| * Subclass to create an SPI implementation for the {@link MenuManager} of an |
| * option group. An option group is similar to a |
| * {@linkplain AbstractMenuSection section}, but enforces that only one of the |
| * children are selected at any time. |
| * <p> |
| * Menu components are linked together using URIs, avoiding the need for compile |
| * time dependencies between SPI implementations. To add actions or toggles to |
| * an option group, use the {@link URI} identifying this section as their parent |
| * id. |
| * <p> |
| * <strong>Note:</strong> To avoid conflicts with other plugins, use a unique |
| * URI root that is related to the Java package name, for instance |
| * <code>http://cs.university.ac.uk/myplugin/2008/menu</code>, and use hash |
| * identifiers for each menu item, for instance |
| * <code>http://cs.university.ac.uk/myplugin/2008/menu#run</code> for a "Run" |
| * item. Use flat URI namespaces, don't base a child's URI on the parent's URI, |
| * as this might make it difficult to relocate the parent menu. |
| * <p> |
| * You need to list the {@linkplain Class#getName() fully qualified class name} |
| * (for example <code>com.example.t2plugin.menu.MyMenu</code>) of the option |
| * group implementation in the SPI description resource file |
| * <code>/META-INF/services/net.sf.taverna.t2.ui.menu.MenuComponent</code> so |
| * that it can be discovered by the {@link MenuManager}. This requirement also |
| * applies to parent menu components (except {@link DefaultToolBar} and |
| * {@link DefaultMenuBar}, but ensure they are only listed once. |
| * |
| * @author Stian Soiland-Reyes |
| */ |
| public abstract class AbstractMenuOptionGroup extends AbstractMenuItem { |
| /** |
| * Construct an option group. |
| * |
| * @param parentId |
| * The {@link URI} of the parent menu component. The parent |
| * should be of type {@link MenuType#menu} or |
| * {@link MenuType#toolBar}. |
| * @param positionHint |
| * The position hint to determine the position of this option |
| * group among its siblings in the parent menu. For |
| * extensibility, use BASIC style numbering such as 10, 20, etc. |
| * (Note that position hints are local to each parent, so each |
| * option group have their own position hint scheme for their |
| * children.) |
| * @param id |
| * The {@link URI} to identify this option group. Use this as the |
| * parent ID for menu components to appear in this option group. |
| */ |
| public AbstractMenuOptionGroup(URI parentId, int positionHint, URI id) { |
| super(MenuType.optionGroup, parentId, id); |
| this.positionHint = positionHint; |
| } |
| } |