Bug 177439 Need an easy way to determine default value for a dynamic parameter
Currently, I have to bring up the data set editor, preview the results in the data set and make a mental note of the value to use for a report parameter that depends on a data set. It would be nice to have a drop down on the default value field, such as <Select value> which when selected queries the data set and presents me with a list to select from.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
}
		else
		{
			errorMessageLine.setText( "" ); 
			errorMessageLine.setImage( null );
		}
		if ( promptMessageLine != null && !promptMessageLine.isDisposed( ) )
		{
			if ( DesignChoiceConstants.PARAM_TYPE_DATETIME.equals( getSelectedDataType( ) ) )
			{
				promptMessageLine.setText( LABEL_DATETIME_PROMPT );
			}
			else
			{
				promptMessageLine.setText( "" ); 
			}
		}
		updateButtons( );
	}
	private String validateName( )
	{
		String name = nameEditor.getText( ).trim( );
		if ( name.length( ) == 0 )
		{
			return ERROR_MSG_NAME_IS_EMPTY;
		}
		if ( !name.equals( inputParameter.getName( ) )
				&& inputParameter.getModuleHandle( ).findParameter( name ) != null )
		{
			return ERROR_MSG_DUPLICATED_NAME;