Bug 113938 Report is marked dirty when open/close cascading parameter dialog without doing any operation on it
description: Report is marked dirty when open/close cascading parameter dialog without doing any operation on it steps to reproduce: 1.new a cascading parameter group 2.save the reprot 3.double click the cascading parameter to bring out edit box 4.click OK to close edit box actual result: Report has been marked dirty expected result: No dirty marked for that no operations done in edit parameter dialog
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
{
			type = DesignChoiceConstants.PARAM_CONTROL_TEXT_BOX;
		}
		else if ( DesignChoiceConstants.PARAM_CONTROL_LIST_BOX.equals( inputParameter.getControlType( ) ) )
		{
			if ( inputParameter.isMustMatch( ) )
			{
				type = PARAM_CONTROL_COMBO;
			}
			else
			{
				type = PARAM_CONTROL_LIST;
			}
		}
		else
		{
			type = inputParameter.getControlType( );
		}
		return type;
	}
	private String getSelectedDataType( )
	{
		String type = null;
		if ( StringUtil.isBlank( dataTypeChooser.getText( ) ) )
		{
			type = inputParameter.getDataType( );
		}
		else
		{
			IChoice choice = dataType.findChoiceByDisplayName( dataTypeChooser.getText( ) );