Bug 180864 Change Allow Null option in Cascading Group.[0705]
Description: Change Allow Null option in Cascading Group. Build number:2.2.0.v20070404 Steps to reproduce: 1. New a cascading group and add sub parameter. Expected result: Is Required option in cascading group definition dialog. Actual result: Allow null value option in Cascading Group definition dialog Error log:N/A
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/CascadingParametersDialog.java
private void setControlEnabled( boolean enable )
	{
		paramNameEditor.setEnabled( enable );
		promptText.setEnabled( enable );
		dataTypeChooser.setEnabled( enable );
		displayTypeChooser.setEnabled( enable );
		defaultValueEditor.setEnabled( enable );
		helpTextEditor.setEnabled( enable );
		formatField.setEnabled( enable );
		listLimit.setEnabled( enable );
		changeFormat.setEnabled( enable );
	}
	private void changeDataType( String type )
	{
		initFormatField( type );
		refreshValueTable( );
		updateButtons( );
	}
	private void initFormatField( String selectedDataType )
	{
		IChoiceSet choiceSet = getFormatChoiceSet( selectedDataType );
		if ( choiceSet == null )
		{
			formatCategroy = formatPattern = null;
		}
		else
		{
			if ( !loading
					|| ( selectedParameter.getCategory( ) == null && selectedParameter.getPattern( ) == null ) )
			{