JavaFX - Iterate GridPane nodes per row - Read Nodes of GridPane per row

Question

I am creating an application using JavaFX 8. I change the content of a grid pane dynamically using drag/drop. I wish to iterate GridPane contents per row or per row/col. JavaFX allows adding nodes in a GridPane by specifying the row and column.

gridPane.add(node, col, row);

I would like to read the nodes of a GridPane on the same way, by specifying the row and column.
I would like to have something similar to the below source (the below code is not correct),

for(int row = 0; row < gridPaneHeight; row++) {
    for(int col = 0; row < gridPaneWidth; col++) {
        Node node = gridPane.get(col, row);
    }
}

there is no code above .do you mean the code below – Madhan Jun 30 '15 at 18:39 — Madhan, Jun 30 '15 at 18:39
Wrong word. I am sorry. I edited the question. – Georgios Syngouroglou Jun 30 '15 at 18:43 — Georgios Syngouroglou, Jun 30 '15 at 18:43

James_D · Accepted Answer · 2015-06-30T18:49:53.610

3

How about

int[][] gridPaneNodes = new int[gridPaneWidth][gridPaneHeight] ;
for (Node child : gridPane.getChildren()) {
    Integer column = GridPane.getColumnIndex(child);
    Integer row = GridPane.getRowIndex(child);
    if (column != null && row != null) {
        gridPaneNodes[column][row] = child ;
    }
}

(or, you could just keep track of which were placed in which cell when you put them there...)

Then you can do

for (int row = 0; row < gridPaneHeight; row++) {
    for(int col = 0; row < gridPaneWidth; col++) {
        Node node = gridPaneNodes[column][row] ;
    }
}

edited Jun 30 '15 at 18:49

answered Jun 30 '15 at 18:42

James_D

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Thank you for your quick answer. – Georgios Syngouroglou Jun 30 '15 at 18:53
Is it array type of Node? – Uluk Biy Jul 01 '15 at 04:21

JavaFX - Iterate GridPane nodes per row - Read Nodes of GridPane per row

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