| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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. |
| // |
| |
| = DevFaqAddingRemovingChildrenDynamically |
| :jbake-type: wiki |
| :jbake-tags: wiki, devfaq, needsreview |
| :jbake-status: published |
| :keywords: Apache NetBeans wiki DevFaqAddingRemovingChildrenDynamically |
| :description: Apache NetBeans wiki DevFaqAddingRemovingChildrenDynamically |
| :toc: left |
| :toc-title: |
| :syntax: true |
| |
| === Can I add or remove children of a node on the fly? |
| |
| Yes. Have your node subclass link:http://www.netbeans.org/download/dev/javadoc/org-openide-nodes/org/openide/nodes/AbstractNode.html[AbstractNode] |
| or whatever else you like. |
| |
| *NB 6 > m9 Specific*: |
| Implement `ChildFactory`. To create the `Children` object for your Node, pass it to `Children.create()`. When the child list needs updating, call `refresh()` on your `ChildFactory`. Its `createKeys` method will be called again and you can update the set of key objects as needed; Nodes for objects that remain in the list of keys will simply continue to exist; additions and removals will be handled. |
| |
| *NB 5 And Earlier*: |
| Have your `Children` object subclass link:http://www.netbeans.org/download/dev/javadoc/org-openide-nodes/org/openide/nodes/Children.Keys.html[Children.Keys]. |
| As needed, call `setKeys()` on the `Children.Keys` object. |
| Just by passing a larger or smaller (or reordered) list of keys, you will be adding or removing (or reordering) children. |
| |
| Do not _ever_ try to add/remove children from a node you |
| did not create (unless it has an API that explicitly gives you permission to do that); occasionally |
| people try to add child nodes to nodes for things like Java files. If it works at all it's by accident. |
| |
| --- |
| |
| Applies to: NetBeans 4.0, 4.1, 5.0 |
| |
| === Apache Migration Information |
| |
| The content in this page was kindly donated by Oracle Corp. to the |
| Apache Software Foundation. |
| |
| This page was exported from link:http://wiki.netbeans.org/DevFaqAddingRemovingChildrenDynamically[http://wiki.netbeans.org/DevFaqAddingRemovingChildrenDynamically] , |
| that was last modified by NetBeans user Admin |
| on 2009-11-06T15:36:07Z. |
| |
| |
| *NOTE:* This document was automatically converted to the AsciiDoc format on 2018-02-07, and needs to be reviewed. |
