Vaadin-Grid: Select all check box does not work in the UI

Question

Problem:

I have a grid with lazy loading and therefore my data is not in memory.

To show the check box to select/deselct all i used this Question. My code looks like this:

Grid<CustomClass> grid;
...
// set selection mode
grid.setSelectionMode(SelectionMode.MULTI);
// make select all check box visible
GridSelectionModel<CustomClass> selectionModel = grid.getSelectionModel();
((GridMultiSelectionModel<CustomClass>) selectionModel)
    .setSelectAllCheckboxVisibility(SelectAllCheckboxVisibility.VISIBLE);

The Problem is, that the check box does not work in the UI as you can see:

If i log the selected items with the following code the check box works as expected

grid.addSelectionListener(l -> {
    log.info("selected: " + l.getAllSelectedItems().size());
});

Question:

What can i do that the check box also works in the UI?

What should selectAll mean in your case? Only the visible rows or all rows in the database? — Simon Martinelli, Jul 16 '21 at 09:35
All the visible rows. The size in the log is also all the visble rows. — MrMaavin, Jul 16 '21 at 10:05
You could store the fetched records and the pass them to grid.asMultiSelect().select(); — Simon Martinelli, Jul 16 '21 at 11:56
What do you exaclty mean? i trie using `grid.asMultiSelect().select();` but it does not help. — MrMaavin, Jul 16 '21 at 12:51
I mean you have to pass all loaded objects to the method select — Simon Martinelli, Jul 16 '21 at 14:03

score 1 · Answer 1 · answered Jul 20 '21 at 08:00

1

The Solution i found that the checkoxes are updated in the UI is to add dataPovider.refreshAll() in the listener.

Code of the Solution:

grid.addSelectionListener(l -> {
    ...
     dataPovider.refreshAll();
    ...
});

answered Jul 20 '21 at 08:00

MrMaavin

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Vaadin-Grid: Select all check box does not work in the UI

1 Answers1