bundles/org.simantics.annotation.ui/src/org/simantics/annotation/ui/wizard/Preferences.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.annotation.ui.wizard;
  13
  14 import java.util.Deque;
  15 import java.util.Iterator;
  16 import java.util.LinkedList;
  17 import java.util.Set;
  18 import java.util.TreeSet;
  19
  20 import org.eclipse.ui.IMemento;
  21 import org.simantics.utils.ui.workbench.StringMemento;
  22
  23 /**
  24  * @author Tuukka Lehtonen
  25  */
  26 public final class Preferences {
  27
  28     public static final String  RECENT_ANNOTATION_TYPE_IMPORT_LOCATIONS = "RECENT_ANNOTATION_TYPE_IMPORT_LOCATIONS";
  29     public static final String  RECENT_ANNOTATION_TYPE_EXPORT_LOCATIONS = "RECENT_ANNOTATION_TYPE_EXPORT_LOCATIONS";
  30     public static final String  ANNOTATION_TYPE_EXPORT_OVERWRITE = "ANNOTATION_TYPE_EXPORT_OVERWRITE";
  31
  32     private static final String TAG_PATH                = "path";
  33     private static final String ATTR_NAME               = "name";
  34
  35     public static Deque<String> decodePaths(String recentPathsPref) {
  36         Deque<String> result = new LinkedList<String>();
  37         try {
  38             StringMemento sm = new StringMemento(recentPathsPref);
  39             for (IMemento m : sm.getChildren(TAG_PATH)) {
  40                 String name = m.getString(ATTR_NAME);
  41                 if (name != null && !name.isEmpty())
  42                     result.add(name);
  43             }
  44         } catch (IllegalArgumentException e) {
  45         }
  46         return result;
  47     }
  48
  49     public static String encodePaths(Deque<String> recentPaths) {
  50         StringMemento sm = new StringMemento();
  51         for (String path : recentPaths) {
  52             IMemento m = sm.createChild(TAG_PATH);
  53             m.putString(ATTR_NAME, path);
  54         }
  55         return sm.toString();
  56     }
  57
  58     public static <T> void removeDuplicates(Iterable<String> iter) {
  59         // Remove duplicates
  60         Set<String> dups = new TreeSet<String>(String.CASE_INSENSITIVE_ORDER);
  61         for (Iterator<String> it = iter.iterator(); it.hasNext();) {
  62             String path = it.next();
  63             if (!dups.add(path)) {
  64                 it.remove();
  65             }
  66         }
  67     }
  68
  69 }