jtree

Prevent node selection on node expansion in a JTree

由 一个人想着一个人 提交于 2019-12-07 16:45:46
问题 I have created a JTree with some of its nodes being custom to show them as expandable although they don't have any children (yet). I have followed this thread to implement that. Why? I want do load the tree dynamically so when the tree gets expanded, I retrieve further information from the server and show it on the tree. The problem I am experiencing is that when I expand one of these nodes, it becomes selected, which is not the default behavior for the default nodes (you can expand them

Changing text style of DefaultMutableTreeNode

由 十年热恋 提交于 2019-12-07 16:44:25
问题 I have created a custom JTree. That tree could be filtered to show only those nodes that contains given criteria (string). Now, is there any way to bold only that part of DefaulMutableTreeNode that contains searched string? If a tree node has label = "StackOverflow" and user is searching for nodes that contains "Stack", "StackOverflow" node would be rendered with "Stack" part bolded. How to achieve that? 回答1: You need to set your own TreeCellRenderer. Example: The code below produces this

expand Jtree at last modified area?

由 孤街浪徒 提交于 2019-12-07 12:05:32
问题 I am using dom4j to create a DocumentTreeModel from a dom4j document. I display this DocumentTreeModel inside JScrollPane . I have a button that adds a new node to the dom4j document, and recreates the DocumentTreeModel I am using getPathForRow but this seems pretty limited. I need to be able to work with multiple tree depth. Basically looking for something like tree.getPathOfLastModifiedChildrensParent() onAddNewNodeButtonClickEventFired { dom4jdocument.addElement( "1" ); tree.setModel(new

store state/expanded nodes of a jtree for restoring state

由 大憨熊 提交于 2019-12-07 01:31:01
问题 I am working with JTree. I would like to know what is best the way to know which nodes are expanded in a JTree so as to save its state (i.e. save all expanded paths). So that if I call model.reload() the Jtree would not stay collapsed, but I will be able to restore its original state to the user, i.e., all expanded nodes will be expanded. 回答1: Santhosh Kumar is one of my go-to guys for Swing Hacks. Answer: http://www.javalobby.org/java/forums/t19857.html 回答2: You need to store the TreePaths

Hiding/filtering nodes in a JTree?

由 给你一囗甜甜゛ 提交于 2019-12-06 20:27:59
问题 I have a data object represented in a TreeModel , and I'd like to show only part of it in my JTree --for the sake of argument, say the leaves and their parents. How can I hide/filter the unnecessary nodes? 回答1: My eventual implementation: Have two TreeModel s, the underlying one and the filtered one. When a change occurs on the underlying TreeModel , rebuild the filtered TreeModel from scratch. Clone each node that should be visible, and add it to its first visible ancestor in the filtered

JTree rendering with JCheckBox nodes

由 孤街浪徒 提交于 2019-12-06 19:16:51
问题 I am attempting to modify the standard Swing JTree to intermingle nodes with and without checkboxes. This is an example: When I attempt to check/uncheck one of the checkboxes (the 'User 01' node in this example), the tree loses nodes: I my code is an adaptation of this example: http://forums.sun.com/thread.jspa?threadID=5321084&start=13. Instead of embedding a JCheckBox in a DefaultMutableTreeNode like this: new DefaultMutableTreeNode(new CheckBoxNode("Accessibility", true)); I thought it

Simple dynamic JTree-based S3 bucket/object chooser example

由 自古美人都是妖i 提交于 2019-12-06 15:37:29
Before writing my own custom implementation, I have been googling for a complete example of a simple tree-like JTree/JDialog that allows me to dynamically load and expand the contents of a S3 bucket or sub-S3-object-keys. In other words, I don't want to recursively prefetch all the objects from different buckets beforehand and populate a JTree . The reason is that there are too many (sub-)objects and keys to have a smooth UX experience, in the order of millions/billions of objects spread in different S3 buckets that don't need to be opened by the user during a session. Put simply, the ideal

Copy Paste from JTree Transferable TransferHandler

由 余生长醉 提交于 2019-12-06 15:04:36
问题 I'm exploring How to do the implementation of the Copy & Paste of JTree . Because, I want Copy from DefaultMutableTreeNode like toString() to paste in another application like Sublime Text. I was viewing the code in order to view how copy & paste is implemented and how is used drag and drop in JTree. My first thougth was, Copy and Paste between DefaultMutableTreeNode of JTree must be tested, later how paste from Clipboard to another application, but my code is not working and Don't know why

Jtree not shown on adding a node!

由 你。 提交于 2019-12-06 12:33:31
I have a static jtree in a scrollpane. And now iam trying to add child to jtree, it got added successfully. Now, the added node is not visible in the jtree. Try 1: I have tried with model.reload() DefaultTreeModel model = (DefaultTreeModel) (tree.getModel()); TreePath Path = findByName(tree, new String[]{Globals.CONS_UIAPROJECTS}); DefaultMutableTreeNode pnode = (DefaultMutableTreeNode) Path.getLastPathComponent(); model.insertNodeInto(UIAProjectExploreDisplay.nodeProTree, pnode, pnode.getChildCount()); model.reload(); Try 2: I have tried with tree.setModel() too... DefaultTreeModel model =

List files and directories with Jtree and File in Java

由 僤鯓⒐⒋嵵緔 提交于 2019-12-06 10:55:54
I want to create a very very simple file manager with JTree, but I only saw a very hard code and I want to create this script very clean and simple. Can you help me? How do I List the directories of my computer in JTree? I wrote the simplest example of a file browser I could think of. It lists all of the directories and files on the C: drive on a Windows computer. Here's the result. And here's the code. I put everything together in one class to make it easier to paste here. You should separate the classes. package com.ggl.testing; import java.io.File; import javax.swing.JFrame; import javax
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