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1   /*
2    * Copyright 2002,2004 The Apache Software Foundation.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.commons.jelly.tags.jface;
17  
18  import org.apache.commons.jelly.JellyTagException;
19  import org.apache.commons.jelly.MissingAttributeException;
20  import org.apache.commons.jelly.XMLOutput;
21  import org.apache.commons.jelly.tags.core.UseBeanTag;
22  import org.eclipse.jface.action.ContributionItem;
23  import org.eclipse.jface.action.IContributionManager;
24  
25  /***
26   * This tag creates an JFace ContributionItem
27   *
28   * @author <a href="mailto:ckl@dacelo.nl">Christiaan ten Klooster</a>
29   */
30  public class ContributionItemTag extends UseBeanTag {
31  
32      public ContributionItemTag(Class arg0) {
33          super(arg0);
34      }
35  
36      /***
37        * @see org.apache.commons.jelly.Tag#doTag(org.apache.commons.jelly.XMLOutput)
38        */
39      public void doTag(XMLOutput output)
40          throws MissingAttributeException, JellyTagException {
41  
42          super.doTag(output);
43  
44          Object bean = getBean();
45          if (bean != null && bean instanceof ContributionItem) {
46              IContributionManager cm = getParentContributionManager();
47              if (cm != null) {
48                  cm.add((ContributionItem) bean);
49              }
50          }
51  
52      }
53  
54      /***
55       * @return IContributionManager
56       */
57      protected IContributionManager getParentContributionManager() {
58          MenuManagerTag tag =
59              (MenuManagerTag) findAncestorWithClass(MenuManagerTag.class);
60          if (tag != null) {
61              return tag.getMenuManager();
62          }
63          return null;
64      }
65  
66  }