Tooltips on filtered rows in a table

Question

I have a JTable and any single row in it has associated a different tooltip when mouse hover a row. I have created a "filter" for this table; when it is applied it perfectly hides the rows need to be hidden but when I hover the mouse on the filtered rows, looks like the tooltip is referring to the row that occupied the same row position of the new current row.

For example:

Table

ROW 1 -> tooltip 1

ROW 2 -> tooltip 2

Apply Filter to Table:

ROW 2 -> tooltip 1

So ROW 2 is displaying the tooltip 1 instead of 2.

TableRowSorter<TableModel> sorter = (TableRowSorter<TableModel>) table.getRowSorter();
sorter.setRowFilter(RowFilter.regexFilter(text));

My table that extends JTable has:

@Override
public String getToolTipText(MouseEvent e) {
    final int rowIndex = rowAtPoint(e.getPoint());
    TableModel model = getModel();
    // take the value from the first column of the selected row
    String tip = (String) getModel().getValueAt(rowIndex, 0));
    return tip;
}

So it looks like using the model is not (quite obvious) updated respect to the filter. I tried using TableModel model = getRowSorter().getModel() too but without any luck.

How can I point to a correct "filtered model" to retrieve the correct row position?

UPDATE:

I have replaced the "rowIndex" code like this:

final int rowIndex = convertRowIndexToModel(rowAtPoint(e.getPoint()));

It partially solves the problem, but when some rows are added dynamically to the table with the filter applied and I hover new rows I get the exception (with relative API description):

IndexOutOfBoundsException -> if sorting is enabled and passed an index outside the range of the JTable as determined by the method getRowCount

works no issue, for better help sooner post an [SSCCE](http://sscce.org/), there must be another issue — mKorbel, Nov 04 '12 at 22:02

score 4 · Answer 1 · answered Nov 04 '12 at 19:49

4

You need to convert the views row index to the model's row index

Have a look at JTable#convertRowIndexToModel

answered Nov 04 '12 at 19:49

MadProgrammer

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thank you very much for your suggestion. It almost solves the problem tho I have still some issue with it. Please see the update above. – Randomize Nov 04 '12 at 20:18
Make sure that you're not updating the table model out side of the Event Dispatching Thread, this will cripple the sorter/filter – MadProgrammer Nov 04 '12 at 23:27

score 2 · Answer 2 · answered Nov 04 '12 at 22:21

You should not override that JTable#getToolTipText method. Just set the tooltip-text on the component returned by your renderer. The JTable will pick it up automatically. You can see this in the implementation of the getTooltipText method of the JTable

Tooltips on filtered rows in a table

2 Answers2