Bug 155273 [Markers] Visibility of problems view columns should be configurable
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
* Update the direction indicator as column is now the primary column.
	 * 
	 * @param column
	 * @field {@link MarkerField}
	 */
	void updateDirectionIndicator(TreeColumn column, MarkerField field) {
		viewer.getTree().setSortColumn(column);
		if (builder.getSortDirection(field) == MarkerComparator.ASCENDING)
			viewer.getTree().setSortDirection(SWT.UP);
		else
			viewer.getTree().setSortDirection(SWT.DOWN);
	}
	/**
	 * Update the status line with the new selection
	 * 
	 * @param newSelection
	 */
	private void updateStatusLine(IStructuredSelection newSelection) {
		String message;
		if (newSelection == null || newSelection.size() == 0) {
			message = MarkerSupportInternalUtilities.EMPTY_STRING;
		} else if (newSelection.size() == 1) {
			
			message = ((MarkerSupportItem) newSelection.getFirstElement())
					.getDescription();
		} else
			
			message = MessageFormat.format(
					MarkerMessages.marker_statusSummarySelected, new Object[] {
							new Integer(newSelection.size()),