package com.nilhcem.fakesmtp.log;

 import java.util.Observable;

 import ch.qos.logback.classic.spi.ILoggingEvent;

 import ch.qos.logback.core.AppenderBase;

 /**

  * Logback appender class, which will redirect all logs to the {@code LogsPane} object.

  *

  * @author Nilhcem

  * @since 1.0

  * @param <E> a Logback logging event.

  */

 public final class SMTPLogsAppender<E> extends AppenderBase<E> {

         private SMTPLogsObservable observable = new SMTPLogsObservable();

         /**

          * Receives a log from Logback, and sends it to the {@code LogsPane} object.

          *

          * @param event a Logback {@code ILoggingEvent} event.

          */

         @Override

         protected void append(E event) {

                 if (event instanceof ILoggingEvent) {

                         ILoggingEvent loggingEvent = (ILoggingEvent) event;

                         observable.notifyObservers(loggingEvent.getFormattedMessage());

                 }

         }

         /**

          * Returns the log observable object.

          *

          * @return the log observable object.

          */

         public Observable getObservable() {

                 return observable;

         }

 }