DeleteFieldParticipant


1   /*
2    * All content copyright (c) 2003-2006 Terracotta, Inc., except as may otherwise be noted in a separate copyright notice.  All rights reserved.
3    */
4   package org.terracotta.dso.refactoring;
5   
6   import org.eclipse.core.resources.IProject;
7   import org.eclipse.core.runtime.IProgressMonitor;
8   import org.eclipse.core.runtime.OperationCanceledException;
9   import org.eclipse.jdt.core.IField;
10  import org.eclipse.ltk.core.refactoring.Change;
11  import org.eclipse.ltk.core.refactoring.RefactoringStatus;
12  import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
13  import org.eclipse.ltk.core.refactoring.participants.DeleteParticipant;
14  
15  import org.terracotta.dso.ConfigurationHelper;
16  import org.terracotta.dso.TcPlugin;
17  
18  public class DeleteFieldParticipant extends DeleteParticipant {
19    private IField fField;
20  
21    public RefactoringStatus checkConditions(IProgressMonitor pm,
22                                             CheckConditionsContext context)
23      throws OperationCanceledException
24    {
25      return new RefactoringStatus();
26    }
27  
28    public Change createChange(IProgressMonitor pm)
29      throws OperationCanceledException
30    {
31      return createChangesForFieldDelete(fField);
32    }
33  
34    public String   getName() {
35      return "TCDeleteFieldChange";
36    }
37  
38    protected boolean initialize(Object   element) {
39      TcPlugin            plugin       = TcPlugin.getDefault();
40      IField              field        = (IField)element;
41      IProject            project      = field.getJavaProject().getProject();
42      ConfigurationHelper configHelper = plugin.getConfigurationHelper(project);
43  
44      if(configHelper.isRoot(field)) {
45        fField = field;
46        return true;
47      }
48  
49      return false;
50    }
51  
52    public static Change createChangesForFieldDelete(IField field) {
53      return new DeleteFieldChange(field);
54    }
55  }
56
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