Getting a Boolean value JAVAFX

Question

I have a group of nodes within a GridPane and have some listeners adding and removing those nodes from the GridPane.

I was wondering if there is a way for me to create a get method(Boolean) or such to test if the nodes are currently in the GridPane or not.

I want to enable the button when the nodes aren't in the gridpane aka false.

Any help/thoughts appreciated!

What have you tried so far? Can you post the code that isn't working so that others can evaluate how best to fix your problem? — ManoDestra, Apr 20 '16 at 13:22

score 3 · Accepted Answer · answered Apr 20 '16 at 13:24

3

That's how you can check for the presence of a node:

gridpane.getChildren().contains(yourNode);

answered Apr 20 '16 at 13:24

jns

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Thank you! This has solved my problem, it's hard sometimes finding the correct parameters. – dan6657 Apr 20 '16 at 13:28

score 1 · Answer 2 · answered Apr 20 '16 at 14:22

You can check if the parent of the Node node that you want to check is the GridPane. This should be a bit faster than using the child list, since it does not require iterating through the child list:

node.getParent() == gridPane

You can also use bindings to enable/disable the button (assuming there is a single node that decides, if the Button should be enabled or disabled)

button.disableProperty().bind(node.parentProperty().isEqualTo(gridPane));

Getting a Boolean value JAVAFX

2 Answers2