Bug 258810 [Markers] Markers for the entire workspace show up when working set empty
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerFieldFilterGroup.java
*/
	public boolean select(IMarker marker) {
		MarkerFieldFilter[] filters = getFieldFilters();
		testEntry.setMarker(marker);
		if (scope == ON_WORKING_SET && workingSet != null
				&& !workingSet.isEmpty()) {
			if (!isInWorkingSet(marker.getResource()))
				return false;
		}
		for (int i = 0; i < filters.length; i++) {
			if (filters[i].select(testEntry))
				continue;
			return false;
		}
		return true;
	}
	/**
	 * Set whether or not the receiver is enabled.
	 * 
	 * @param enabled
	 *            The enabled to set.
	 */
	void setEnabled(boolean enabled) {
		this.enabled = enabled;
	}
	/**
	 * Set the name of the receiver.
	 * 
	 * @param newName
	 */