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/*******************************************************************************
* Copyright (c) 2001, 2005 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jem.internal.beaninfo.ui;
/*
* $RCSfile: SPListElementSorter.java,v $
* $Revision: 1.6 $ $Date: 2005/08/24 21:07:12 $
*/
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.jem.internal.beaninfo.core.SearchpathEntry;
/**
* Sorter for sorting BPSearchListElements within the main list.
* It is not to be used on elements within a specific beaninfo entry.
*
* @version 1.0
* @author
*/
public class SPListElementSorter extends ViewerSorter {
/*
* @see ViewerSorter#category(Object)
*/
public int category(Object obj) {
if (obj instanceof BPSearchListElement) {
BPSearchListElement element = (BPSearchListElement) obj;
switch (((SearchpathEntry) element.getEntry()).getKind()) {
case IClasspathEntry.CPE_LIBRARY:
return 4;
case IClasspathEntry.CPE_PROJECT:
return 1;
case IClasspathEntry.CPE_SOURCE:
return 0;
case IClasspathEntry.CPE_VARIABLE:
return 3;
case IClasspathEntry.CPE_CONTAINER:
return 2;
}
}
return super.category(obj);
}
/*
* @see ViewerSorter#compare()
*/
public int compare(Viewer viewer, Object e1, Object e2) {
int cat1 = category(e1);
int cat2 = category(e2);
if (cat1 != cat2)
return cat1 - cat2;
if ((e1 instanceof BPSearchListElement) && (e2 instanceof BPSearchListElement)) {
SearchpathEntry p1 = (SearchpathEntry) ((BPSearchListElement) e1).getEntry();
SearchpathEntry p2 = (SearchpathEntry) ((BPSearchListElement) e2).getEntry();
// Compare first within path, then packages within each path.
int c = p1.getPath().toString().compareTo(p2.getPath().toString());
if (c == 0) {
// Within same path, so now sort by package, if there are any.
String pkg1 = p1.getPackage();
String pkg2 = p2.getPackage();
if (pkg1 == null)
pkg1 = ""; // For null, use an empty string //$NON-NLS-1$
if (pkg2 == null)
pkg2 = ""; //$NON-NLS-1$
return pkg1.compareTo(pkg2);
} else
return c; // Paths are not equal, so sort via path.
}
return super.compare(viewer, e1, e2);
}
}
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