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/*******************************************************************************
* Copyright (c) 2006, 2010 Soyatec (http://www.soyatec.com) and others. *
* All rights reserved. This program and the accompanying materials *
* are made available under the terms of the Eclipse Public License v1.0 *
* which accompanies this distribution, and is available at *
* http://www.eclipse.org/legal/epl-v10.html *
* *
* Contributors: *
* Soyatec - initial API and implementation *
*******************************************************************************/
package org.eclipse.papyrus.xwt.internal.utils;
import java.io.Serializable;
import java.util.Collections;
import java.util.Comparator;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.papyrus.xwt.internal.xml.Attribute;
import org.eclipse.papyrus.xwt.internal.xml.DocumentObject;
import org.eclipse.papyrus.xwt.internal.xml.Element;
public class DocumentObjectSorter {
public static List<DocumentObject> sortWithAttr(DocumentObject[] sourceArray, String attrName) {
return sortWithAttr(sourceArray, new AttrComparator(attrName), attrName);
}
public static List<DocumentObject> sortWithAttr(DocumentObject[] sourceArray, Comparator<Element> comparator, String attrName) {
List<DocumentObject> columnsList = new LinkedList<DocumentObject>();
for (DocumentObject column : sourceArray) {
Element columnElement = (Element) column;
Attribute indexAttr = columnElement.getAttribute(attrName);
if (indexAttr == null) {
columnsList.add(column);
}
}
List<Element> tempList = new LinkedList<Element>();
for (DocumentObject column : sourceArray) {
Element columnElement = (Element) column;
Attribute indexAttr = columnElement.getAttribute(attrName);
if (indexAttr != null) {
tempList.add(columnElement);
}
}
if (comparator == null) {
comparator = new AttrComparator(attrName);
}
Collections.sort(tempList, comparator);
for (Element columnElement : tempList) {
Attribute indexAttr = columnElement.getAttribute(attrName);
try {
int index = Integer.parseInt(indexAttr.getContent());
columnsList.add(index, columnElement);
} catch (Exception e) {
columnsList.add(columnsList.size(), columnElement);
}
}
return columnsList;
}
private static class AttrComparator implements Comparator<Element>, Serializable {
private static final long serialVersionUID = 1L;
private String attrName;
public AttrComparator(String attrName) {
this.attrName = attrName;
}
public int compare(Element e1, Element e2) {
Attribute attr1 = e1.getAttribute(attrName);
Attribute attr2 = e2.getAttribute(attrName);
String compare1 = attr1.getContent();
String compare2 = attr2.getContent();
if (compare1 == null || compare2 == null) {
return 0;
}
try {
int index1 = Integer.parseInt(compare1);
int index2 = Integer.parseInt(compare2);
return index1 > index2 ? 1 : -1;
} catch (Exception e) {
return compare1.compareTo(compare2);
}
}
}
}
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