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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 java.util.Map;
19  
20  import org.apache.commons.jelly.JellyTagException;
21  import org.apache.commons.jelly.MissingAttributeException;
22  import org.apache.commons.jelly.XMLOutput;
23  import org.apache.commons.jelly.tags.core.UseBeanTag;
24  import org.apache.commons.jelly.tags.jface.window.ApplicationWindowTag;
25  import org.eclipse.jface.action.MenuManager;
26  import org.eclipse.jface.window.ApplicationWindow;
27  import org.eclipse.jface.window.Window;
28  
29  /***
30   * This tag creates an JFace MenuManager
31   *
32   * @author <a href="mailto:ckl@dacelo.nl">Christiaan ten Klooster</a>
33   */
34  public class MenuManagerTag extends UseBeanTag {
35  
36      private String text;
37      private MenuManager mm;
38  
39      /***
40       * @return the parent window which this widget will be added to.
41       */
42      public Window getParentWindow() {
43  
44          ApplicationWindowTag tag =
45              (ApplicationWindowTag) findAncestorWithClass(ApplicationWindowTag
46                  .class);
47          if (tag != null) {
48              return tag.getWindow();
49          }
50  
51          return null;
52      }
53  
54      /* (non-Javadoc)
55       * @see org.apache.commons.jelly.Tag#doTag(org.apache.commons.jelly.XMLOutput)
56       */
57      public void doTag(XMLOutput output)
58          throws MissingAttributeException, JellyTagException {
59  
60          Map attributes = getAttributes();
61          text = attributes.remove("text").toString();
62  
63          if (text == null)
64              throw new MissingAttributeException("text attribute is missing");
65  
66          mm = new MenuManager(text);
67  
68          ApplicationWindow window = (ApplicationWindow) getParentWindow();
69          if (window != null) {
70              window.getMenuBarManager().add(mm);
71          }
72  
73          // invoke by body just in case some nested tag configures me
74          invokeBody(output);
75      }
76  
77      /***
78       * @return MenuManager
79       */
80      public MenuManager getMenuManager() {
81          return mm;
82      }
83  
84  }