I'm updating a Java Swing application to support the user switching the app's font from normal size to a larger size (so the user can switch between the two sizes at runtime). One problem I'm having is with a JTree that uses HTML for the tree nodes to underline the text in some nodes (the HTML is just embedded in the JLabel of each tree...
As the question states, I'd like to set a mouse listener to my JTree so that I can change the cursor to a HAND_CURSOR when the user places their mouse over a node. I already have a MouseAdapter registered on my JTree to handle click events, but I can't seem to get a MouseMoved or MouseEntered/MouseExited to work with what I'm trying to ...
I'd like to add the 'expand' button to my JTree's nodes to indicate that they are expandable. The catch is that they have no children until the user clicks on them (due to processing that happens in the background). Is there any way I can set a node as a parent or having children without it actually having children? Thanks ...
I am attempting to create a JTree where a node has several components: a JPanel that holds a JCheckBox, followed by a JLabel, then a JComboBox. I have attached the code at the bottom if one wishes to run it. Fortunately the JTree correctly renders the components. However when I click on the JComboBox, the node disappears; if I click on t...
Hello, everyone! When using a JTree, a "user object" of a DefaultMutableTreeNode can be set. This can be of any kind, but to display it, its toString() value is used. This is not what I need. How can I change the way a user object is displayed? NOTE: My user object has to be something different than a String to be able to maintain map...
I found out recently that JList (finally!) was "generified" in JDK7. Why JTree and related classes/interfaces are not changed the same? It would be a huge improvement. Casting Object is going on one's nerves. NOTE: The javadoc had not yet been updated, see here and here. ...
I'm trying to use Java drag and drop to drag an object from a JTree into a native .NET component that is embedded in my app. This .NET component only accepts File objects, so I'm having trouble with the DnD's Transferable object. Anyone know how I can make this Transferable "look" like a file to this .Net component? p.s. I need this ...
I've seen many many articles on how to read XML into a JTree but few on how to create the XML from the JTree. Can anyone help me with a simple approach for this? I've seen an example that looked like: XMLEncoder e = new XMLEncoder( new BufferedOutputStream(new FileOutputStream(f.toString()))); e.writeObject(o); ...
It appears to me that tree selection events should happen after focus events, but this doesn't seem to be the case. Assume you have a JTree and a JTextField, where the JTextField is populated by what is selected in the tree. When the user changes the text field, on focus lost, you update the tree from the text field. however, the tree se...
Hi guys I use JTree with TreeNode which extending DefaultMutableTreeNode.when I add new node,i cant update JTree.Any help will be appreciated ...
Imagine a collection of objects such as World, Country, Region and City. World contains a list of Country objects, Country contains a list of Region objects etc. I would like to represent this structure in a JTree and be able to add, remove and move objects around the tree. Can I easily create a TableModel from this structure? World wo...
Looking for how to traverse a JTree (can do that) and check to see each node to see if it's displayed (to the user) or not visible. Can't believe JTree doesn't have this function, maybe I'm missing something? ...
I want to find a method like isNodeExpanded() to check if a given JTree node is expanded or not, but I can not find it. I know I can do this by tracking the node expansion with the TreeExpansionListener. Is there a better way? ...
Hi. Im developing a system that stores courses that participants can apply to. I'm presenting the enrollments in a JTree in the courseadministratorGUI. My problem is that, for every enrollment it's adding a new courseNode. Been trying for many hours, and hope I can now get some advice that will point me in the correct direction. Thank ...
I have a JTree which I give objects that implement the TreeNode interface, and a custom TreeModel to display them (not using DefaultMutableTreeNode). I would like to change the text colour of some nodes. I can't find anything in the docs, except javax.swing.tree.DefaultTreeCellRenderer.setTextNonSelectionColor(Color newColor), but it wil...
it's possible, and how, to change a view to a jTree ? i would like this http://ksprog.net/fig52.JPG Thanks ...
I have a wizard with several screens where user has to fill his/her details for further processing. At the second screen I have a radio group with three radio buttons that enable additional elements. To proceed, user has to choose one of them. When user selects third button, single-selection JTree filled in with data enables and user has...
i want to display different Jpanel when different node is selected just like in a fileBrowser.My Jpanel has button controls.am using TreeselectionListerner and defaultMutableTreeNode.how can i display different panel for nodes in the same depth.each node corresponds to different objects .everyTime i create a node i pass the userObject ...
How to set the node text.Here is the code am using public TreeCreation(final ArrayList houseList){ Apartment= new DefaultMutableTreeNode("Apartment"); for(int i=0;i by passing the userObject the name of the object is being displayed on the node ,how do i change the code to display h.HouseName when am using userObjects node.getUserO...
I need a Swing component that will let me display a tree-structured list of items, and allow the user to select or de-select an arbitrary subset of those items, with the ability to select or deselect an entire subtree's worth of components by picking that subtree's parent. (Basically, something similar to the Eclipse "Export JAR file's"...