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Code Issues Packages Projects Releases 1 Wiki Activity

Delayed initialization auch für Music Klasse

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ngb
2022-07-11 14:41:58 +02:00
parent 855d67c873
commit 5557030e0d
1 changed files with 27 additions and 16 deletions
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43
src/main/java/schule/ngb/zm/media/Music.java
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@@ -1,5 +1,7 @@
package schule.ngb.zm.media;
import schule.ngb.zm.anim.Animation;
import schule.ngb.zm.anim.AnimationListener;
import schule.ngb.zm.events.EventDispatcher;
import schule.ngb.zm.tasks.TaskRunner;
import schule.ngb.zm.util.Log;
@@ -56,12 +58,7 @@ public class Music implements Audio {
*/
private float volume = 0.8f;
EventDispatcher<Audio, AudioListener> events;
{
events = new EventDispatcher<>();
events.registerEventType("start", (a,l) -> l.start(a));
events.registerEventType("stop", (a,l) -> l.stop(a));
}
EventDispatcher<Audio, AudioListener> eventDispatcher;
public Music( String source ) {
Validator.requireNotNull(source);
@@ -72,14 +69,6 @@ public class Music implements Audio {
return audioSource;
}
public void addListener( AudioListener listener ) {
events.addListener(listener);
}
public void removeListener( AudioListener listener ) {
events.removeListener(listener);
}
/**
* {@inheritDoc}
*/
@@ -205,7 +194,7 @@ public class Music implements Audio {
private void stream() {
audioLine.start();
playing = true;
events.dispatchEvent("start", Music.this);
eventDispatcher.dispatchEvent("start", Music.this);
byte[] bytesBuffer = new byte[BUFFER_SIZE];
int bytesRead = -1;
@@ -232,7 +221,7 @@ public class Music implements Audio {
playing = false;
streamingStopped();
events.dispatchEvent("stop", Music.this);
eventDispatcher.dispatchEvent("stop", Music.this);
}
private boolean openLine() {
@@ -286,6 +275,28 @@ public class Music implements Audio {
}
}
public void addListener( AudioListener listener ) {
initializeEventDispatcher().addListener(listener);
}
public void removeListener( AudioListener listener ) {
initializeEventDispatcher().removeListener(listener);
}
/**
* Interne Methode, um den Listener-Mechanismus zu initialisieren. Wird erst
* aufgerufen, soblad sich auch ein Listener registrieren möchte.
* @return
*/
private EventDispatcher<Audio, AudioListener> initializeEventDispatcher() {
if( eventDispatcher == null ) {
eventDispatcher = new EventDispatcher<>();
eventDispatcher.registerEventType("start", (a,l) -> l.start(a));
eventDispatcher.registerEventType("stop", (a,l) -> l.stop(a));
}
return eventDispatcher;
}
private static final Log LOG = Log.getLogger(Music.class);
}