DataGrid SelectMode=MULTI does not offer any handlers for the checkboxes for advanced operations

DataGrid SelectMode=MULTI does not offer any handlers for the checkboxes for advanced operations:
https://demo.jmix.io/ui-samples/sample/data-grid-selection-mode

It would be great getting the same events and handlers for the datagrid checkbox similar to the normal checkbox:
https://demo.jmix.io/ui-samples/sample/checkbox-dataaware

Hi,

Could you please describe in more detail what exactly events you need from the checkbox?

DataGrid provides selection listener and select methods (both to select a single item or a collection of items) which are replacements for value change and setValue.

Regards,
Gleb

When I use the JMix IDE, it does not offer any selection listener methods:
image

Additionally, I would need the ability to disable checkboxes for the parents and some children in a TreeDatagrid once a checkbox was selected.

Adding the SelectionListener doesn’t work in both studio and framework. This occurs because the method doesn’t fit the standard definition of a method signature for a subscribe-method. A base subscribe-method has only 1 parameter, which implements eventObject.

For example:

@Subscribe("usersDataGrid")
public void onDataGridSelect(SelectionEvent<DataGrid<User>, User> event) { 
   // do nothing 
}

com.vaadin.flow.data.selection.SelectionEvent doesn’t implement eventObject, so the method can’t be resolved.

The SelectionEvent has two inheritors which extend eventObject:

  1. com.vaadin.flow.data.selection.MultiSelectionEvent
  2. com.vaadin.flow.data.selection.SingleSelectionEvent

However, for these particular events there are no methods to add. It must be added with io.jmix.flowui.component.grid.DataGrid#addSelectionListener.

Thus, the problem can’t be solved right now, so selection listener can be added only by injecting DataGrid and invoking addSelectionListener merhod.

Gleb

Hi!

Event support will be available in the October release.

Please see related framework issue:

Best regards,
Dmitriy

1 Like