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 1997-2007 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: package org.netbeans.modules.mashup.db.ui;
042:
043: import java.util.Collections;
044: import java.util.LinkedList;
045: import java.util.List;
046:
047: import org.openide.nodes.Children;
048: import org.openide.nodes.Node;
049:
050: /**
051: * List of children of a containing node. Remember to document what your permitted keys
052: * are!
053: *
054: * @author Ritesh Adval
055: * @version $Revision$
056: */
057: public class FlatfileChildren extends Children.Keys {
058:
059: /** Optional holder for the keys, to be used when changing them dynamically. */
060: protected List myKeys;
061:
062: /** Constructs default instance of FlatfileChildren */
063: public FlatfileChildren() {
064: myKeys = null;
065: }
066:
067: /** AddNotify */
068: protected void addNotify() {
069: super .addNotify();
070: if (myKeys != null) {
071: return;
072: }
073: myKeys = new LinkedList();
074: // add whatever keys you need
075: setKeys(myKeys);
076: }
077:
078: /** Remove Notify */
079: protected void removeNotify() {
080: myKeys = null;
081: setKeys(Collections.EMPTY_SET);
082: super .removeNotify();
083: }
084:
085: /**
086: * Create Node
087: *
088: * @param key key
089: * @return array of nodes
090: */
091: protected Node[] createNodes(Object key) {
092: return null;
093: }
094:
095: /**
096: * Optional accessor method for the keys, for use by the container node or maybe
097: * subclasses.
098: */
099: /*
100: * protected addKey(Object newKey) { // Make sure some keys already exist:
101: * addNotify(); myKeys.add(newKey); // Ensure that the node(s) is displayed:
102: * refreshKey(newKey); }
103: */
104:
105: /**
106: * Optional accessor method for keys, for use by the container node or maybe
107: * subclasses.
108: */
109: /*
110: * protected void setKeys(Collection keys) { myKeys = new LinkedList();
111: * myKeys.addAll(keys); super.setKeys(keys); }
112: */
113:
114: // Could also write e.g. removeKey to be used by the nodes in this children.
115: // Or, could listen to changes in their status (NodeAdapter.nodeDestroyed)
116: // and automatically remove them from the keys list here. Etc.
117: }
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