net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/actions/RemoveBlockCommentAction.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.ui.actions;
  12
  13 import java.util.LinkedList;
  14 import java.util.List;
  15 import java.util.ResourceBundle;
  16
  17 import net.sourceforge.phpdt.internal.ui.text.IPHPPartitions;
  18
  19 import org.eclipse.jface.text.BadLocationException;
  20 import org.eclipse.jface.text.BadPartitioningException;
  21 import org.eclipse.jface.text.IDocumentExtension3;
  22 import org.eclipse.jface.text.ITextSelection;
  23 import org.eclipse.jface.text.ITypedRegion;
  24 import org.eclipse.ui.texteditor.ITextEditor;
  25
  26 /**
  27  * Action that removes the enclosing comment marks from a Java block comment.
  28  *
  29  * @since 3.0
  30  */
  31 public class RemoveBlockCommentAction extends BlockCommentAction {
  32
  33         /**
  34          * Creates a new instance.
  35          *
  36          * @param bundle
  37          *            the resource bundle
  38          * @param prefix
  39          *            a prefix to be prepended to the various resource keys
  40          *            (described in <code>ResourceAction</code> constructor), or
  41          *            <code>null</code> if none
  42          * @param editor
  43          *            the text editor
  44          */
  45         public RemoveBlockCommentAction(ResourceBundle bundle, String prefix,
  46                         ITextEditor editor) {
  47                 super(bundle, prefix, editor);
  48         }
  49
  50         /*
  51          * @see net.sourceforge.phpdt.internal.ui.actions.AddBlockCommentAction#runInternal(org.eclipse.jface.text.ITextSelection,
  52          *      org.eclipse.jface.text.IDocumentExtension3,
  53          *      net.sourceforge.phpdt.internal.ui.actions.AddBlockCommentAction.Edit.EditFactory)
  54          */
  55         protected void runInternal(ITextSelection selection,
  56                         IDocumentExtension3 docExtension, Edit.EditFactory factory)
  57                         throws BadPartitioningException, BadLocationException {
  58                 List edits = new LinkedList();
  59                 int tokenLength = getCommentStart().length();
  60
  61                 int offset = selection.getOffset();
  62                 int endOffset = offset + selection.getLength();
  63
  64                 ITypedRegion partition = docExtension.getPartition(
  65                                 IPHPPartitions.PHP_PARTITIONING, offset, false);
  66                 int partOffset = partition.getOffset();
  67                 int partEndOffset = partOffset + partition.getLength();
  68
  69                 while (partEndOffset < endOffset) {
  70
  71                         if (partition.getType() == IPHPPartitions.PHP_MULTILINE_COMMENT) {
  72                                 edits.add(factory.createEdit(partOffset, tokenLength, "")); //$NON-NLS-1$
  73                                 edits.add(factory.createEdit(partEndOffset - tokenLength,
  74                                                 tokenLength, "")); //$NON-NLS-1$
  75                         }
  76
  77                         partition = docExtension.getPartition(
  78                                         IPHPPartitions.PHP_PARTITIONING, partEndOffset, false);
  79                         partOffset = partition.getOffset();
  80                         partEndOffset = partOffset + partition.getLength();
  81                 }
  82
  83                 if (partition.getType() == IPHPPartitions.PHP_MULTILINE_COMMENT) {
  84                         edits.add(factory.createEdit(partOffset, tokenLength, "")); //$NON-NLS-1$
  85                         edits.add(factory.createEdit(partEndOffset - tokenLength,
  86                                         tokenLength, "")); //$NON-NLS-1$
  87                 }
  88
  89                 executeEdits(edits);
  90         }
  91
  92         /*
  93          * @see net.sourceforge.phpdt.internal.ui.actions.AddBlockCommentAction#validSelection(org.eclipse.jface.text.ITextSelection)
  94          */
  95         protected boolean isValidSelection(ITextSelection selection) {
  96                 return selection != null && !selection.isEmpty();
  97         }
  98
  99 }