RemoveClassPathRootAction


1   /*
2    * The contents of this file are subject to the terms of the Common Development
3    * and Distribution License (the License). You may not use this file except in
4    * compliance with the License.
5    *
6    * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7    * or http://www.netbeans.org/cddl.txt.
8    *
9    * When distributing Covered Code, include this CDDL Header Notice in each file
10   * and include the License file at http://www.netbeans.org/cddl.txt.
11   * If applicable, add the following below the CDDL Header, with the fields
12   * enclosed by brackets [] replaced by your own identifying information:
13   * "Portions Copyrighted [year] [name of copyright owner]"
14   *
15   * The Original Software is NetBeans. The Initial Developer of the Original
16   * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  package org.netbeans.modules.java.j2seproject.ui;
21  
22  
23  import org.openide.nodes.Node;
24  import org.openide.util.NbBundle;
25  import org.openide.util.HelpCtx;
26  import org.openide.util.actions.NodeAction;
27  import org.netbeans.spi.project.support.ant.EditableProperties;
28  
29  import java.util.Iterator  ;
30  
31  /**
32   * Action for removing an ClassPathRoot. The action looks up
33   * the {@link RemoveClassPathRootAction.Removable} in the
34   * activated node's Lookups and delegates to it.
35   * @author Tomas Zezula
36   */
37  final class RemoveClassPathRootAction extends NodeAction {
38  
39      /**
40       * Implementation of this interfaces has to be placed
41       * into the node's Lookup to allow {@link RemoveClassPathRootAction}
42       * on the node.
43       */
44      static interface Removable {
45          /**
46           * Checks if the classpath root can be removed
47           * @return returns true if the action should be enabled
48           */
49          public boolean canRemove ();
50  
51          /**
52           * Removes the classpath root
53           */
54          public abstract void remove ();
55      }
56  
57      protected void performAction(Node[] activatedNodes) {
58          for (int i=0; i<activatedNodes.length; i++) {
59              Removable removable = (Removable) activatedNodes[i].getLookup().lookup(Removable.class);
60              if (removable!=null) {
61                  removable.remove();
62              }
63          }
64      }
65  
66      protected boolean enable(Node[] activatedNodes) {
67          for (int i=0; i<activatedNodes.length; i++) {
68              Removable removable = (Removable) activatedNodes[i].getLookup().lookup(Removable.class);
69              if (removable==null) {
70                  return false;
71              }
72              if (!removable.canRemove()) {
73                  return false;
74              }
75          }
76          return true;
77      }
78  
79      public String   getName() {
80          return NbBundle.getMessage (RemoveClassPathRootAction.class,"CTL_RemoveProject");
81      }
82  
83      public HelpCtx getHelpCtx() {
84          return new HelpCtx (RemoveClassPathRootAction.class);
85      }
86  
87      protected boolean asynchronous() {
88          return false;
89      }
90  
91      /**
92       * Checks if the reference is still used in the project.
93       * @param props the array of {@link EditableProperties} which
94       * should be checked.
95       * @param reference
96       * @return true if the reference is used
97       */
98      public static boolean isReferenced (EditableProperties[] props, String   reference) {
99          for (int i=0; i< props.length; i++) {
100             for (Iterator   it = props[i].values().iterator(); it.hasNext();) {
101                 String   value = (String  ) it.next ();
102                 if (value != null && value.indexOf(reference)>=0) {
103                     return true;
104                 }
105             }
106         }
107         return false;
108     }
109 }
110
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