CODEWITHSUNDEEP
javacheckboxswtjface
Nemin
Nemin

Reputation: 2027

CheckboxTableViewer does not change the focus of the table row when clicked on its checkbox

Hi I am relatively new to SWT. I am using a CheckboxTableViewer. I have a listener on it:

diagnosesTableViewer.getTable().addSelectionListener(new SelectionListener() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            int nomenclatureSelectionIndex = diagnosesTableViewer
                    .getTable().getSelectionIndex();
            Nomenclature checkedNomenclature = (Nomenclature) diagnosesTableViewer
                    .getElementAt(nomenclatureSelectionIndex);
            diagnosesTableViewer.setChecked(checkedNomenclature,
                    !diagnosesTableViewer
                            .getChecked(checkedNomenclature));
        }

When I click on the table row (anywhere but the checkbox), everything works as expected. But when I click on the checkbox specifically, I unchecks the checkbox of the previously selected row as well. I think it is because when I click on the checkbox, it does not change the focus to the new row and hence the listener is called on the old, previously selected row itlsef and the new row whose checkbox I am selecting, its listener is never being called. How can I solve this?

Upvotes: 0

Views: 425

Answers (1)

greg-449
greg-449

Reputation: 111142

Use CheckboxTableViewer.addCheckStateListener to add an ICheckStateListener to deal with check boxes being clicked.

viewer.addCheckStateListener(new ICheckStateListener() {
        @Override
        public void checkStateChanged(CheckStateChangedEvent event) {
            // event.getChecked() is the check state
            // event.getElement() is element being checked/unchecked
        }
    });

You can select the clicked row in the event with

viewer.setSelection(new StructuredSelection(event.getElement()));

Use

IStructuredSelection selection = (IStructuredSelection)viewer.getSelection();

to get the existing selection.

Upvotes: 2

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