CODEWITHSUNDEEP
javafxmouseevent
Garrett A. Hughes
Garrett A. Hughes

Reputation: 145

In javaFX need object reference to node under mouse cursor

I need a reference to the object under the mouse cursor in a javaFX Pane (or ScrollPane) The following code removes the node under the cursor from the Pane.

The node object is stored in an ArrayList and has a unique id. If I had a reference to the node object, it would be a simple matter to remove it from the list. I'd be happy just to be able to pull the id of the node object out of the target description supplied by the MouseEvent's description of the target, and use it to find my node in the list. Note: I am creating these nodes dynamically and they are nameless: myList.add(new TYPE()).

Here's the snippet that I'm using to remove the node in the Pane; 

root.setOnMouseClicked(new EventHandler<MouseEvent>() {
    @Override
    public void handle (MouseEvent me) {
        // would like a line here that grabbed the reference to the target
        pane.getChildren().remove(me.getTarget());

    }
});

Upvotes: 1

Views: 4296

Answers (2)

Garrett A. Hughes
Garrett A. Hughes

Reputation: 145

To James_D: Reason for disbelief: the syntax that fails to get past the compiler is the statement containing the expression me.getTarget().getText() which is commented out. It seemed to me that that ought to have worked. 

for (Text tl : textList)
   if ( (me.getTarget()) == (tl) )
       {
          System.out.println("HuRah!");
          System.out.println("text is " + tl.getText());
          //System.out.println("text is " + me.getTarget().getText());
          textList.remove(me.getTarget());                   
        }

Upvotes: 0

Warren Nocos
Warren Nocos

Reputation: 1292

It would be better for you to put the setOnMouseClicked listener to the node on which you want to remove from the list.

List<Node> listOfNodes = new ArrayList();
Node node = new Node();
listOfNodes.add(node);
node.setOnMouseClicked((event) -> {
    listOfNodes.remove(node);
});

Note: Better use ObservableList than the ordinary ArrayList especially if you want that node to be removed also out from the root pane.

Upvotes: 1

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