CSCategoryTrackerUtil


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.wizards.cheatsheet;
13  
14  import java.util.HashMap  ;
15  
16  /**
17   * CSCategoryTrackerUtil
18   * Bi-directional hash map utility
19   */
20  public class CSCategoryTrackerUtil {
21  
22      public final static int F_TYPE_NO_CATEGORY = 0; 
23  
24      public final static int F_TYPE_NEW_CATEGORY = 1;
25      
26      public final static int F_TYPE_OLD_CATEGORY = 2;
27      
28      private HashMap   fCategoryNameMap;
29      
30      private HashMap   fCategoryIDMap; 
31      
32      private HashMap   fCategoryTypeMap;
33      
34      /**
35       * 
36       */
37      public CSCategoryTrackerUtil() {
38  
39          // Look-up hashmap
40          // Keys are category ids
41          // Values are category names        
42          fCategoryIDMap = new HashMap  ();
43          
44          // Reverse look-up hashmap
45          // Keys are category names
46          // Values are category ids
47          fCategoryNameMap = new HashMap  ();       
48          
49          
50          // Look-up hashmap
51          // Keys are category ids
52          // Values are category types: either new or old
53          fCategoryTypeMap = new HashMap  ();
54          
55      }
56  
57      /**
58       * @param id
59       * @param name
60       */
61      public void associate(String   id, String   name, int type) {
62          fCategoryNameMap.put(name, id);
63          fCategoryIDMap.put(id, name);
64          fCategoryTypeMap.put(id, new Integer  (type));
65      }
66      
67      /**
68       * @param name
69       * @return
70       */
71      public boolean containsCategoryName(String   name) {
72          return fCategoryNameMap.containsKey(name);
73      }
74      
75      /**
76       * @param id
77       * @return
78       */
79      public boolean containsCategoryID(String   id) {
80          return fCategoryIDMap.containsKey(id);
81      }
82      
83      /**
84       * @param id
85       * @return
86       */
87      public String   getCategoryName(String   id) {
88          return (String  )fCategoryIDMap.get(id);
89      }
90      
91      /**
92       * @param name
93       * @return
94       */
95      public String   getCategoryID(String   name) {
96          return (String  )fCategoryNameMap.get(name);
97      }
98      
99      /**
100      * @param id
101      * @return
102      */
103     public int getCategoryType(String   id) {
104         Integer   integer = (Integer  )fCategoryTypeMap.get(id);
105         if (integer == null) {
106             return F_TYPE_NO_CATEGORY;
107         }
108         return integer.intValue();
109     }
110     
111 }
112
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