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 TableGroupHandle )
		{
			includeHeader.setSelection( inputGroup.hasHeader( ) );
			includeFooter.setSelection( inputGroup.hasFooter( ) );
		}
		else
		{
			includeHeader.setSelection( false );
			includeFooter.setSelection( false );
		}
		if ( DesignChoiceConstants.SORT_DIRECTION_ASC.equals( inputGroup.getSortDirection( ) ) )
		{
			ascending.setSelection( true );
		}
		else
		{
			descending.setSelection( true );
		}
		List list = new ArrayList( 1 );
		list.add( inputGroup );
		
		tocEditor.setText( UIUtil.convertToGUIString( inputGroup.getTocExpression( ) ) );
		return true;
	}
	/**
	 * Sets the model input.
	 * 
	 * @param input
	 */