| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.openapi.roots.ui.configuration; |
| |
| import com.intellij.openapi.roots.OrderRootType; |
| import com.intellij.openapi.roots.libraries.Library; |
| import com.intellij.openapi.vfs.VirtualFile; |
| |
| import java.util.Comparator; |
| |
| /** |
| * @author Eugene Zhuravlev |
| * Date: Jan 14, 2004 |
| */ |
| public class LibrariesAlphaComparator implements Comparator<Library> { |
| public static LibrariesAlphaComparator INSTANCE = new LibrariesAlphaComparator(); |
| |
| @Override |
| public int compare(Library library1, Library library2) { |
| String name1 = library1.getName(); |
| if (name1 != null && name1.length() == 0) { |
| name1 = null; |
| } |
| String name2 = library2.getName(); |
| if (name2 != null && name2.length() == 0) { |
| name2 = null; |
| } |
| if (name1 == null && name2 == null) { |
| final VirtualFile[] files1 = library1.getFiles(OrderRootType.CLASSES); |
| final VirtualFile[] files2 = library2.getFiles(OrderRootType.CLASSES); |
| name1 = files1.length > 0? files1[0].getName() : null; |
| name2 = files2.length > 0? files2[0].getName() : null; |
| } |
| return compareNames(name1, name2); |
| } |
| |
| public int compareNames(String name1, String name2) { |
| if (name1 == null && name2 == null) { |
| return 0; |
| } |
| else if (name1 == null) { |
| return -1; |
| } |
| else if (name2 == null) { |
| return +1; |
| } |
| else { |
| return name1.compareToIgnoreCase(name2); |
| } |
| } |
| } |