Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: Eric Sosman Newsgroups: comp.lang.java.programmer Subject: Re: JTree add / remove nodes Date: Thu, 05 Mar 2015 18:28:22 -0500 Organization: A noiseless patient Spider Lines: 72 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Thu, 5 Mar 2015 23:27:42 +0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="858a9d65d95f4ea4d355bd116aa2cdbf"; logging-data="19834"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/eiFcHbPO4fY2duh7rsfOJ" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 In-Reply-To: Cancel-Lock: sha1:/wpL1a9J/FcZjKoJ5FMuRLCD32E= Xref: csiph.com comp.lang.java.programmer:31276 On 3/5/2015 5:59 PM, Philipp Kraus wrote: > On 2015-03-05 19:18:21 +0000, Eric Sosman said: > >> On 3/5/2015 1:23 PM, Philipp Kraus wrote: >>> On 2015-03-05 14:17:28 +0000, Jeff Higgins said: >>> >>>> On 03/05/2015 02:12 AM, Philipp Kraus wrote: >>>>> I have got a tree dataset and I would like to visualize the data >>>>> with a >>>>> JTree component. The user should only brows in the tree, so no >>>>> modifcation on the nodes is needed. >>>> >>>> JTree.DynamicUtilTreeNode has a static >>>> createChildren(DefaultMutableTreeNode parent, Object children) >>>> method which is convenient for this. >>> >>> Greate thanks, this work's. >>> >>> My question is, the createChildren adds only nodes until the parent, >>> but how can I add a full path similar to the linux command "mkdir -p" >>> which creates all directories of the path, if it not exists. >> >> Divide the components of your path into parent, child, grandchild, >> and so on. If the parent is not already present in the tree's top >> level, add it. Then if the child is not already present in the >> parent's level, add it. Then if the grandchild is not already present >> in the child's level, add it ... > > Okay I must do my traversing myself, so I have hoped for a build-in > function I don't know of one. Certainly the "divide into components" part is highly data-specific, and thus unlikely to be offered as a utility method. Even if you fed the utility a List of component parts, it's not entirely clear what should happen: For example, if you start with the tree a/ b/ c/ and add a/b/d, should the JTree display a/ b/ d c/ or a/ b/ d b/ c/ or a/ b/ c/ a/ b/ d or ...? Policy decisions of this sort are more the province of the TreeModel than of the JTree, I think. -- esosman@comcast-dot-net.invalid "Don't be afraid of work. Make work afraid of you." -- TLM