Lost focus after using MessageDialog in TableViewer in JFace

Question

I have a strange problem with MessageDialog. I have a dialog which holds a TableViewer. My plan is that when a user select something in the TableViewer, it will pop up a warning dialog. the code is like below:

contextTableViewer = new TableViewer(tableContainer, SWT.BORDER | SWT.FULL_SELECTION);
contextTableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
  public void selectionChanged(SelectionChangedEvent event) {
    ...
    if () {
       Shell pshell = Display.getCurrent().getActiveShell();
        MessageDialog.openWarning(pshell, "something", "something");
    }
    ...
  }

my problem is that, after the warning dialog pop up, I loss the focus. For instance, I need to click "Cancel" button twice to close the dialog that holds the TableViewer. I tried to use setFocus() to set the focus back, but it didn't work. Any tips? Thanks very much.

Answer 1

I don't know why it happens, I solve the problem by mocking a mouse clicking on the dialog to get the focus back.