Bug 110087 [Markers] "Filters" menu doesn't remember the last selected filter
When I was playing with this it was a true pain. I'd change somes ettings to see what effect it had and then re-open the dialog to try some other settings I had to re-select my filter (it selects the first one always)...
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/FiltersConfigurationDialog.java
/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
			 */
			public void widgetSelected(SelectionEvent e) {
				andFilters = false;
			}
		});
	}
	/**
	 * Create a new filter called newName
	 * 
	 * @param newName
	 */
	private void createNewFilter(String newName) {
		MarkerFieldFilterGroup group = new MarkerFieldFilterGroup(null,
				contentGenerator);
		group.setName(newName);
		filterGroups.add(group);
		filtersList.refresh();
		filtersList.setSelection(new StructuredSelection(group));
	}
	/**
	 * Return the filter groups modified by the receiver.
	 * 
	 * @return Collection of {@link MarkerFieldFilterGroup}
	 */
	Collection getFilters() {
		return filterGroups;