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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.editor.view.checklist;
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import org.eclipse.jface.viewers.Viewer;
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import org.eclipse.jface.viewers.ViewerComparator;
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import eu.etaxonomy.cdm.model.taxon.Taxon;
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/**
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* @author a.oppermann
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* @created 30.04.2014
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* @version 1.0
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*/
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public class ChecklistEditorComparator extends ViewerComparator {
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private int propertyIndex;
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private static final int ASCENDING = 0;
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private static final int DESCENDING = 1;
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private int direction = ASCENDING;
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public ChecklistEditorComparator() {
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this.propertyIndex = 1;
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direction = ASCENDING;
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}
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public void setColumn(int column) {
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if (column == this.propertyIndex) {
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// Same column as last sort; toggle the direction
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direction = 1 - direction;
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} else {
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// New column; do an ascending sort
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this.propertyIndex = column;
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direction = DESCENDING;
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}
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ViewerComparator#compare(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
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*/
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@Override
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public int compare(Viewer viewer, Object e1, Object e2) {
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Taxon d1 = (Taxon) e1;
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Taxon d2 = (Taxon) e2;
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int result = 0;
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switch (propertyIndex) {
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default:
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result = d1.getTitleCache().compareTo(d2.getTitleCache());
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}
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// If descending order, flip the direction
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if (direction == DESCENDING) {
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result = -result;
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}
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return result;
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}
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}
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