Bug 122177 Add input for IntervalBase to Group Editor
BIRT model's group definition has one important property: IntervalBase (see GroupHandle.setIntervalBase). This property controls how interval-based grouping picks the range of its initial group, and is an important part of range-based grouping. BIRT designer's Group Details editor should allow user to edit IntervalBase for a group. This is how the editor should work: * IntervalBase options should be presented only if "Interval" is not "None". (Since IntervalBase only makes sense for interval-based grouping) * IntervalBase should be presented in conjunction with checkbox. When it is unchecked (maps to a NULL IntervalBase value), Data Engine dynamically picks a base value using the first group key value in the result set. When it is checked, the user should input a base value. The following is a suggested look of the UI control: [ ] Use fixed base value for interval: _______________ ( [] is a checkbox, underline ___ is a textbox ).
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
if ( inputGroup instanceof ListGroupHandle )
		{
			includeGroup.setEnabled( false );
			includeHeader.setEnabled( false );
			includeFooter.setEnabled( false );
		}
		Group sortingGroup = new Group( composite, SWT.NONE );
		sortingGroup.setText( SORT_GROUP_TITLE );
		sortingGroup.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		sortingGroup.setLayout( new FillLayout( SWT.VERTICAL ) );
		Composite sortingGroupComposite = new Composite( sortingGroup, SWT.NONE );
		sortingGroupComposite.setLayout( new GridLayout( ) );
		ascending = new Button( sortingGroupComposite, SWT.RADIO );
		ascending.setText( sortByAscending.getDisplayName( ) );
		descending = new Button( sortingGroupComposite, SWT.RADIO );
		descending.setText( sortByDescending.getDisplayName( ) );
	}
	/**
	 * Creates sorting and filter table area
	 * 
	 * @param parent
	 *            the parent composite
	 */
	private void createFilterSortingArea( Composite parent )
	{
		Group group = new Group( parent, SWT.NONE );
		group.setText( GROUP_DLG_GROUP_FILTER_SORTING );
		group.setLayout( new GridLayout( ) );
		group.setLayoutData( new GridData( 550, 250 ) );
		ArrayList list = new ArrayList( 1 );