Fix drag option enable on pad loading

PlayWall/src/main/java/de/tobias/playpad/layout/desktop/pad/DesktopPadDragListener.java

@@ -104,7 +104,7 @@ public class DesktopPadDragListener implements EventHandler<DragEvent> {
 			final PadContentRegistry registry = PlayPadPlugin.getRegistries().getPadContents();
 			final List<PadContentFactory> supportedContentTypes = registry.getPadContentConnectsForFiles(paths);
 
-			if (currentPad.getContent() != null && currentPad.getContent().isPadLoaded()) {
+			if (currentPad.getContent() != null && currentPad.getContent().isPadLoading()) {
 				return;
 			}
 

PlayWallCore/src/main/java/de/tobias/playpad/pad/content/PadContent.java

@@ -40,6 +40,10 @@ public abstract class PadContent {
 
 	public abstract boolean isPadLoaded();
 
+	public boolean isPadLoading() {
+		return false;
+	}
+
 	/**
 	 * Load media files.
 	 */

PlayWallPlugins/PlayWallPluginContentPlayer/src/main/scala/de/tobias/playpad/plugin/content/pad/ContentPlayerPadContent.scala

@@ -184,6 +184,9 @@ class ContentPlayerPadContent(val pad: Pad, val `type`: String) extends PadConte
 		loadedOptional.orElse(false)
 	}
 
+
+	override def isPadLoading: Boolean = mediaPlayers.stream().anyMatch(player => player.mediaPlayer.getStatus == MediaPlayer.Status.UNKNOWN)
+
 	/**
 	 * Load media files.
 	 */