treenode

问题 My delete function doesn't work when I try to delete node with only right child. It works when node has left child only or has both left and right. I would like to know if this is a valid approach to this problem. I know how to write this in C++ but I need it to work in C# also. //Private method, with args: root node, node to be deleted private Node DeleteN(Node root, Node deleteNode) { if (root == null) { return root; } if (deleteNode.data < root.data) { root.left = DeleteN(root.left,

问题 I created a class that extends DefaultMutableTreeNode. It has a variable, "resource" of the type Resource so that it can be linked to an object without that object affecting its name. The Resource class has a variable, "name" that I would like to be changed when its corresponding DefaultMutableTreeNode is renamed, but I can't find any such events. 回答1: In DefaultTreeCellEditor there is this method: http://docs.oracle.com/javase/7/docs/api/javax/swing/tree/DefaultTreeCellEditor.html

问题 Trying to create a checkbox to check all items in a treenode. I'm kind of new to JSF so I'm pretty stumped as how to implement this on a tree instead of a table. This is the current code: <rich:panel style="width:400px;"> <h:selectBooleanCheckbox id="vehicleAll" onclick="selectAllModel(this.checked);"> </h:selectBooleanCheckbox> <h:outputText value=" ALL"/> <rich:tree id="vehicleTree" switchType="client" value="#{applicationScope.demoModelGrpList}" var="node" ajaxKeys="#{null}" binding="#

问题 I have a Jtree that I can add new Nodes to. I need to assign a unique ID to each new node. I was thinking of extending the DefaultMutableTreeNode Class but I guess it didn't work or I did it wrong. So, how can I do this. An example would be nice. Thanks. 回答1: My impression is that DefaultMutableTreeNode works "best" without extending it, but wrapping your own user-defined object. And that could have an ID. Nevertheless your way should work too, when creating a nodes children with your own

问题 I am very inexperienced with SmartGWT and have the following issue: I managed to make a Library of different kinds of documents in a tree. For some documents I want to show three icons, which are representing links to other websites, further i want to show some description under them. I tried to write my own CustomTreeNode, also I looked at setCellFormatter() and tried to overwrite it with no luck. Can you give me some Tips and hints how to achieve the desired functionality and what I have to

问题 I created a treeview using powershell code but now i want to change the color of the node during the creation depends of the type of the node. I tried this => $newNode = new-object System.Windows.Forms.TreeNode $newNode.ForeColor = Color.Blue; But it's not working, i got an error like "The term 'Color.Blue' is not recognized as the name of a cmdlet". Anyone succeed to do it? 回答1: If you are going to use a typed color and also have intellisense when writing code, you can use: $newNode

问题 I was wondering if it was possible with a TreeView in a windows form to add or remove a level? For example: my treeview is like this to begin with: ParentNode | Child1 | Child2 if user clicks on a button to add a level to Child2 it becomes: ParentNode | Child1 | | Child1.1 There is a a Node.Level function but only usable to get the level and not to set it. EDIT: The nodes are built automatically, the level is assigned depending on the style of an excel cell. The problem is, it happens that

问题 Target I'd like to loop through DOM text nodes, sorted by their order inside the DOM. Furthermore I'd like to filter nodes by custom logic (e.g. check if a node is inside a specific element). Additionally all this should be done in the best possible performance and working in IE9+. Method All of the above requirements are met with either document.createTreeWalker() or document.createNodeIterator() I don't fully understand why these similiar functions aren't merged together. But, as

问题 How to embed a full-size image to a TreeNode? The goal is to display detailed log file, where each node represents window caption and its subnodes contain keylog. 回答1: Use the following pattern to add images to the TreeView image list. ImageList treeList = new ImageList(); treeList.Images.Add("imageKey", myImage); Then to set an image to a node use myNode.ImageKey = "imageKey"; 回答2: Try this function : private void FillTreeView() { // Load the images in an ImageList. ImageList myImageList =

问题 I have a .Net desktop application with a TreeView as one of the UI elements. I want to be able to multi-select that TreeView, only that isn't supported at all. So I'm adding check-boxes to the tree, My problem is that only some items are selectable, and those that aren't can't consistently cascade selections. Is there any way to disable or hide some check-boxes while displaying others? 回答1: The default behavior of TreeView is that when the Checkboxes property is set to true, that checkboxes