Bug 124742 Disable/change fixed base value for string and date data
The Use fixed base value for interval option in the Edit Group dialog should be disabled for string and date data because it has no effect on these types of values. For date data, for example, if I specify a grouping interval of 1 week, and I specify a base value of 01/01/2006 (a Sunday), the dates are still grouped by weeks that start on Monday.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
import org.eclipse.swt.widgets.Text;
/**
 * Group Properties Dialog
 */
public class GroupDialog extends BaseDialog
{
	private static final String GROUP_DLG_GROUP_FILTER_SORTING = Messages.getString( "GroupDialog.Label.FilterSorting" ); 
	private static final String GROUP_DLG_GROUP_RANGE_LABEL = Messages.getString( "GroupDialog.Label.Range" ); 
	private static final String GROUP_DLG_GROUP_INTERVAL_LABEL = Messages.getString( "GroupDialog.Label.Interval" ); 
	private static final String GROUP_DLG_GROUP_KEY_LABEL = Messages.getString( "GroupDialog.Label.GroupOn" ); 
	private static final String GROUP_DLG_GROUP_NAME_LABEL = Messages.getString( "GroupDialog.Label.Name" ); 
	private static final String TAB_SORTING = Messages.getString( "GroupDialog.Tab.Sorting" ); 
	private static final String TAB_FILTER = Messages.getString( "GroupDialog.Tab.Filter" ); 
	private static final String GROUP_DLG_INCLUDE_FOOTER_LABEL = Messages.getString( "GroupDialog.Label.IncludeFooter" ); 
	private static final String GROUP_DLG_INCLUDE_HEADER_LABEL = Messages.getString( "GroupDialog.Label.IncludeHeader" ); 
	private static final String GROUP_DLG_HEADER_FOOTER_LABEL = Messages.getString( "GroupDialog.Label.HeaderFooter" ); 
	public static final String GROUP_DLG_INTERVAL_BASE_LABEL = Messages.getString( "GroupDialog.Label.IntervalBase" ); 
	private static final String GROUP_DLG_AREA_MSG = Messages.getString( "GroupDialog.Dialog.GroupDetail" ); 
	public static final String GROUP_DLG_TITLE_NEW = Messages.getString( "GroupDialog.Title.New" ); 
	public static final String GROUP_DLG_TITLE_EDIT = Messages.getString( "GroupDialog.Title.Edit" ); 
	private List dataSetList = null, columnList;
	private GroupHandle inputGroup;