eu.etaxonomy.taxeditor.bulkeditor/src/main/java/eu/etaxonomy/taxeditor/bulkeditor/BulkEditorSortCombo.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10
  11 package eu.etaxonomy.taxeditor.bulkeditor;
  12
  13 import java.util.ArrayList;
  14 import java.util.Comparator;
  15 import java.util.List;
  16 import java.util.Set;
  17
  18 import org.eclipse.swt.SWT;
  19 import org.eclipse.swt.events.SelectionAdapter;
  20 import org.eclipse.swt.events.SelectionEvent;
  21 import org.eclipse.swt.widgets.Combo;
  22 import org.eclipse.swt.widgets.Composite;
  23 import org.eclipse.swt.widgets.Label;
  24
  25 /**
  26  * @author n.hoffmann
  27  * @created Dec 14, 2010
  28  * @version 1.0
  29  */
  30 public class BulkEditorSortCombo {
  31
  32         private Label label;
  33
  34         private Combo combo;
  35
  36         private List<IBulkEditorSortProvider> sortProviders;
  37
  38         private List<Comparator> comparators = new ArrayList<Comparator>();
  39
  40         private int selectedIndex = 0;
  41
  42         /**
  43          *
  44          */
  45         public BulkEditorSortCombo(Composite parent, List<IBulkEditorSortProvider> sortProviders) {
  46                 this.sortProviders = sortProviders;
  47                 if(! sortProviders.isEmpty()){
  48                         label = new Label(parent, SWT.NONE);
  49                         label.setText("Sort by");
  50
  51                         combo = new Combo(parent, SWT.DROP_DOWN);
  52
  53                         fillCombo();
  54                 }
  55         }
  56
  57         /**
  58          *
  59          */
  60         private void fillCombo() {
  61                 for(IBulkEditorSortProvider sortProvider : sortProviders){
  62                         Set<String> names = sortProvider.getComparatorNames();
  63                         for(String name : names){
  64                                 combo.add(name);
  65                                 comparators.add(sortProvider.getComparatorByName(name));
  66                         }
  67                 }
  68
  69                 combo.addSelectionListener(new SelectionListener());
  70                 combo.select(selectedIndex);
  71         }
  72
  73         private class SelectionListener extends SelectionAdapter{
  74                 /* (non-Javadoc)
  75                  * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
  76                  */
  77                 @Override
  78                 public void widgetSelected(SelectionEvent e) {
  79                         selectedIndex = combo.getSelectionIndex();
  80                 }
  81         }
  82
  83         /**
  84          *
  85          */
  86         public Comparator getSelection() {
  87                 return comparators.get(selectedIndex);
  88         }
  89 }