001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.tasklist.projectint;
043:
044: import java.util.ArrayList;
045: import java.util.Collection;
046: import java.util.Enumeration;
047: import java.util.Iterator;
048: import java.util.NoSuchElementException;
049: import org.openide.filesystems.FileObject;
050: import org.openide.filesystems.FileUtil;
051:
052: /**
053: * Iterates all files and sub-folders under the given root folders.
054: *
055: * @author S. Aubrecht
056: */
057: class FileObjectIterator implements Iterator<FileObject> {
058:
059: private Collection<FileObject> roots;
060: private Collection<FileObject> editedFiles;
061:
062: private Iterator<FileObject> rootsIterator;
063: private Iterator<FileObject> editedFilesIterator;
064: private Enumeration<? extends FileObject> rootChildrenEnum;
065:
066: /** Creates a new instance of FileObjectIterator */
067: public FileObjectIterator(Collection<FileObject> roots,
068: Collection<FileObject> editedFiles) {
069: this .roots = roots;
070: this .editedFiles = editedFiles;
071: }
072:
073: public boolean hasNext() {
074: if (null == rootsIterator) {
075: checkEditedFiles();
076: rootsIterator = roots.iterator();
077: return rootsIterator.hasNext();
078: }
079: return (null != rootChildrenEnum && rootChildrenEnum
080: .hasMoreElements())
081: || rootsIterator.hasNext()
082: || editedFilesIterator.hasNext();
083: }
084:
085: public FileObject next() {
086: //make sure opened files are scanned first
087: if (editedFilesIterator.hasNext()) {
088: return editedFilesIterator.next();
089: }
090:
091: FileObject result = null;
092: if (null == rootChildrenEnum
093: || !rootChildrenEnum.hasMoreElements()) {
094: if (rootsIterator.hasNext()) {
095: result = rootsIterator.next();
096: rootChildrenEnum = result.getChildren(true);
097: } else {
098: throw new NoSuchElementException();
099: }
100: } else {
101: result = rootChildrenEnum.nextElement();
102: }
103: return result;
104: }
105:
106: public void remove() {
107: throw new UnsupportedOperationException();
108: }
109:
110: private void checkEditedFiles() {
111: if (null != editedFiles) {
112: ArrayList<FileObject> editedFilesUnderRoots = new ArrayList<FileObject>(
113: editedFiles.size());
114: for (FileObject fo : editedFiles) {
115: if (isUnderRoots(fo)) {
116: editedFilesUnderRoots.add(fo);
117: }
118: }
119: editedFiles = null;
120: editedFilesIterator = editedFilesUnderRoots.iterator();
121: } else {
122: editedFilesIterator = new EmptyIterator();
123: }
124: }
125:
126: private boolean isUnderRoots(FileObject fo) {
127: for (FileObject root : roots) {
128: if (FileUtil.isParentOf(root, fo))
129: return true;
130: }
131: return false;
132: }
133: }
|