Bug 444128

Description Christian 2014-09-15 10:43:48 EDT

Use the sample code and do the following steps:
1. Select a number 1 in the combo
2. Push the "Next" button
3. The selection is not visible any more

public class BasicEntryPoint extends AbstractEntryPoint {
	private List<String> segmente = Arrays.asList("1", "2", "3", "4", "5");
	@Override
	protected void createContents(Composite parent) {
		parent.setLayout(new GridLayout(2, false));
		ComboViewer fromCombo = new ComboViewer(parent);
		fromCombo.setContentProvider(new ArrayContentProvider());
		fromCombo.setInput(segmente);
		Button button = new Button(parent, SWT.PUSH);
		button.setText("Next");
		button.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent e) {
				Object currentSelection = ((IStructuredSelection) fromCombo
						.getSelection()).getFirstElement();
				segmente = segmente.subList(0, segmente.size()-1);
				fromCombo.setInput(segmente);
				fromCombo
						.setSelection(new StructuredSelection(currentSelection));
			}
		});
	}
}

Everytime we push the "Next" button we reduce the new input by one element from the end and we set the selection again. In this case the old selection is not visible again. If we change the example and reduce the new input by one element from the beginning the selection will be visible. Using SWT both ways are working.