CODEWITHSUNDEEP
javaswingcheckboxjtree
Sakthi.droid
Sakthi.droid

Reputation: 187

Problems with Programatically selecting checkbox nodes

I have a checkbox group Listed in a tree structure.The tree is connected with a vector, which stores the state of checkboxes in the tree. I have buttons to select all checkboxes, and other buttons to select the corresponding checkbox. From the below diagram you can picturize UI.

enter image description here

for (CheckBoxNode Node : CheckBoxNodeTree.checkBoxRows) {
if(Node.isSelected()){
Node.setSelected(!Node.isSelected());
        }

For Select All the code used is :

TreeModel model = TREE.getModel();
        TreeNode  rootofTree = (TreeNode) model.getRoot();

        Enumeration<TreeNode> enumeratorForTree =                ((DefaultMutableTreeNode)rootofTree).breadthFirstEnumeration();
        while (enumeratorForTree.hasMoreElements()) {
         TreeNode child = enumeratorForTree.nextElement();
         Object currentNode = ((DefaultMutableTreeNode) child).getUserObject();
         if(currentNode instanceof CheckBoxNode) {

                ((CheckBoxNode) currentNode).setSelected(true);
         }
        }
        for (CheckBoxNode Node: CheckBoxNodeTree.checkBoxRows) 
        {
        Node.setSelected(true);
        }

The issue i am facing now is that on clicking the respective buttons the checkbox state changes, but after clicking "Select All" button i am able to see that the nodes get checked ,but after this , if i try to select the induvidual nodes using the corresponding button , i cannot see the result on the tree . Can anyone Help me with your suggestions. Thanks to the replier in advance.

Upvotes: 0

Views: 1659

Answers (2)

kleopatra
kleopatra

Reputation: 51525

Looks like a notification issue - you are changing node state without the model knowing of it. Assuming your model is a DefaultTreeModel, invoke a model.nodeChanged after changing the selection:

currentNode.setSelected(newState);
model.nodeChanged(currentNode);

Upvotes: 2

Dodd10x
Dodd10x

Reputation: 3349

Where is the code for your buttons used to select individual nodes? Are you trying to make a button that toggles but yours only checks the box right now? Maybe try this:

 buttonPushed() {
     //get your node for this button
    node.setSelected(!node.isSelected());
 }

Upvotes: 0

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