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   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 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
  12 package net.sourceforge.phpdt.internal.ui.text.spelling;
  13
  14 import java.net.URL;
  15 import java.util.StringTokenizer;
  16
  17 import net.sourceforge.phpdt.core.JavaCore;
  18 import net.sourceforge.phpdt.internal.ui.text.spelling.engine.AbstractSpellDictionary;
  19
  20 import org.eclipse.core.runtime.Plugin;
  21 import org.eclipse.core.runtime.Preferences.IPropertyChangeListener;
  22 import org.eclipse.core.runtime.Preferences.PropertyChangeEvent;
  23
  24 /**
  25  * Dictionary for task tags.
  26  *
  27  * @since 3.0
  28  */
  29 public class TaskTagDictionary extends AbstractSpellDictionary implements
  30                 IPropertyChangeListener {
  31
  32         /*
  33          * @see net.sourceforge.phpdt.internal.ui.text.spelling.engine.AbstractSpellDictionary#getName()
  34          */
  35         protected final URL getURL() {
  36                 return null;
  37         }
  38
  39         /*
  40          * @see net.sourceforge.phpdt.ui.text.spelling.engine.AbstractSpellDictionary#load(java.net.URL)
  41          */
  42         protected boolean load(final URL url) {
  43
  44                 final Plugin plugin = JavaCore.getPlugin();
  45                 if (plugin != null) {
  46
  47                         plugin.getPluginPreferences().addPropertyChangeListener(this);
  48                         return updateTaskTags();
  49                 }
  50                 return false;
  51         }
  52
  53         /*
  54          * @see org.eclipse.core.runtime.Preferences.IPropertyChangeListener#propertyChange(org.eclipse.core.runtime.Preferences.PropertyChangeEvent)
  55          */
  56         public void propertyChange(final PropertyChangeEvent event) {
  57
  58                 if (JavaCore.COMPILER_TASK_TAGS.equals(event.getProperty()))
  59                         updateTaskTags();
  60         }
  61
  62         /*
  63          * @see net.sourceforge.phpdt.ui.text.spelling.engine.ISpellDictionary#unload()
  64          */
  65         public void unload() {
  66
  67                 final Plugin plugin = JavaCore.getPlugin();
  68                 if (plugin != null)
  69                         plugin.getPluginPreferences().removePropertyChangeListener(this);
  70
  71                 super.unload();
  72         }
  73
  74         /**
  75          * Handles the compiler task tags property change event.
  76          */
  77         protected boolean updateTaskTags() {
  78
  79                 final String tags = JavaCore.getOption(JavaCore.COMPILER_TASK_TAGS);
  80                 if (tags != null) {
  81
  82                         unload();
  83
  84                         final StringTokenizer tokenizer = new StringTokenizer(tags, ","); //$NON-NLS-1$
  85                         while (tokenizer.hasMoreTokens())
  86                                 hashWord(tokenizer.nextToken());
  87
  88                         return true;
  89                 }
  90                 return false;
  91         }
  92 }