Bug 127289 [Markers] SystemFilter and group selection state not preserved
We are not preserving the selection state of the system filters or which group is selected.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerFilter.java
}
	/**
	 * <ul>
	 * <li><code>MarkerFilter.ON_ANY</code> if showing items associated with
	 * any resource.</li>
	 * <li><code>MarkerFilter.ON_SELECTED_ONLY</code> if showing items
	 * associated with the selected resource within the workbench.</li>
	 * <li><code>MarkerFilter.ON_SELECTED_AND_CHILDREN</code> if showing
	 * items associated with the selected resource within the workbench and its
	 * children.</li>
	 * <li><code>MarkerFilter.ON_ANY_OF_SAME_PROJECT</code> if showing items
	 * in the same project as the selected resource within the workbench.</li>
	 * <li><code>MarkerFilter.ON_WORKING_SET</code> if showing items in some
	 * working set.</li>
	 * </ul>
	 */
	public int getOnResource() {
		return onResource;
	}
	/**
	 * Sets the type of filtering by selection.
	 * 
	 * @param onResource
	 *            must be one of:
	 *            <ul>
	 *            <li><code>MarkerFilter.ON_ANY_RESOURCE</code></li>
	 *            <li><code>MarkerFilter.ON_SELECTED_RESOURCE_ONLY</code></li>
	 *            <li><code>MarkerFilter.ON_SELECTED_RESOURCE_AND_CHILDREN</code></li>
	 *            <li><code>MarkerFilter.ON_ANY_RESOURCE_OF_SAME_PROJECT</code></li>
	 *            <li><code>MarkerFilter.ON_WORKING_SET</code></li>