CorrectionCommandInstaller


1   /*******************************************************************************
2    * Copyright (c) 2000, 2005 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.jdt.internal.ui.text.correction;
13  
14  import java.util.ArrayList  ;
15  import java.util.Collection  ;
16  import java.util.Iterator  ;
17  import java.util.List  ;
18  
19  import org.eclipse.ui.IWorkbench;
20  import org.eclipse.ui.LegacyHandlerSubmissionExpression;
21  import org.eclipse.ui.PlatformUI;
22  import org.eclipse.ui.commands.ICommandService;
23  import org.eclipse.ui.handlers.IHandlerActivation;
24  import org.eclipse.ui.handlers.IHandlerService;
25  
26  import org.eclipse.jdt.internal.ui.JavaPlugin;
27  import org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor;
28  
29  public class CorrectionCommandInstaller {
30      
31      /**
32       * All correction commands must start with the following prefix.
33       */
34      public static final String   COMMAND_PREFIX= "org.eclipse.jdt.ui.correction."; //$NON-NLS-1$
35      
36      /**
37       * Commands for quick assist must have the following suffix.
38       */
39      public static final String   ASSIST_SUFFIX= ".assist"; //$NON-NLS-1$
40      
41      private List   fCorrectionHandlerActivations;
42      
43      public CorrectionCommandInstaller() {
44          fCorrectionHandlerActivations= null;
45      }
46      
47      public void registerCommands(CompilationUnitEditor editor) {
48          IWorkbench workbench= PlatformUI.getWorkbench();
49          ICommandService commandService= (ICommandService) workbench.getAdapter(ICommandService.class);
50          IHandlerService handlerService= (IHandlerService) workbench.getAdapter(IHandlerService.class);
51          if (commandService == null || handlerService == null) {
52              return;
53          }
54          
55          if (fCorrectionHandlerActivations != null) {
56              JavaPlugin.logErrorMessage("correction handler activations not released"); //$NON-NLS-1$
57          }
58          fCorrectionHandlerActivations= new ArrayList  ();
59          
60          Collection   definedCommandIds= commandService.getDefinedCommandIds();
61          for (Iterator   iter= definedCommandIds.iterator(); iter.hasNext();) {
62              String   id= (String  ) iter.next();
63              if (id.startsWith(COMMAND_PREFIX)) {
64                  boolean isAssist= id.endsWith(ASSIST_SUFFIX);
65                  CorrectionCommandHandler handler= new CorrectionCommandHandler(editor, id, isAssist);
66                  IHandlerActivation activation= handlerService.activateHandler(id, handler, new LegacyHandlerSubmissionExpression(null, null, editor.getSite()));
67                  fCorrectionHandlerActivations.add(activation);
68              }
69          }
70      }
71      
72      public void deregisterCommands() {
73          IHandlerService handlerService= (IHandlerService) PlatformUI.getWorkbench().getAdapter(IHandlerService.class);
74          if (handlerService != null && fCorrectionHandlerActivations != null) {
75              handlerService.deactivateHandlers(fCorrectionHandlerActivations);
76              fCorrectionHandlerActivations= null;
77          }
78      }
79  
80  }
81
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