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Java > Open Source Codes > org > eclipse > pde > internal > ui > editor > contentassist > TypeFieldAssistDisposer


1 /*******************************************************************************
2  * Copyright (c) 2006 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11
12 package org.eclipse.pde.internal.ui.editor.contentassist;
13
14 import org.eclipse.jface.fieldassist.IContentProposalListener;
15 import org.eclipse.jface.fieldassist.IContentProposalListener2;
16 import org.eclipse.jface.viewers.ILabelProvider;
17 import org.eclipse.ui.fieldassist.ContentAssistCommandAdapter;
18
19 /**
20  * TypeFieldAssistDisposer
21  *
22  */
23 public class TypeFieldAssistDisposer {
24
25     private ContentAssistCommandAdapter fAdapter;
26     
27     private TypeContentProposalListener fListener;
28     
29     /**
30      *
31      */
32     public TypeFieldAssistDisposer(ContentAssistCommandAdapter adapter,
33             TypeContentProposalListener listener) {
34         fAdapter = adapter;
35         fListener = listener;
36     }
37
38     /**
39      *
40      */
41     public void dispose() {
42         if (fAdapter == null) {
43             return;
44         }
45         // Dispose of the label provider
46 ILabelProvider labelProvider = fAdapter.getLabelProvider();
47         if ((labelProvider != null)) {
48             fAdapter.setLabelProvider(null);
49             labelProvider.dispose();
50         }
51         // Remove the listeners
52 if (fListener != null) {
53             fAdapter.removeContentProposalListener(
54                     (IContentProposalListener) fListener);
55             fAdapter.removeContentProposalListener(
56                     (IContentProposalListener2) fListener);
57         }
58     }
59     
60 }
61
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