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

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