1 files changed, 27 insertions, 0 deletions
diff --git a/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java b/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java
index aea9a5b7b..e3ce7001e 100644
--- a/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java
+++ b/src/jogl/classes/jogamp/opengl/GLDrawableHelper.java
@@ -649,8 +649,10 @@ public class GLDrawableHelper {
 
   public final void display(final GLAutoDrawable drawable) {
     displayImpl(drawable);
+    // runForAllGLEventListener(drawable, displayAction);
     if( glRunnables.size()>0 && !execGLRunnables(drawable) ) { // glRunnables volatile OK; execGL.. only executed if size > 0
         displayImpl(drawable);
+        // runForAllGLEventListener(drawable, displayAction);
     }
   }
   private final void displayImpl(final GLAutoDrawable drawable) {
@@ -669,6 +671,31 @@ public class GLDrawableHelper {
       }
   }
 
+  public static interface GLEventListenerAction {
+      public void run(final GLAutoDrawable drawable, final GLEventListener listener);
+  }
+  /**
+  private static GLEventListenerAction displayAction = new GLEventListenerAction() {
+      public void run(final GLAutoDrawable drawable, final GLEventListener listener) {
+          listener.display(drawable);
+      }  }; */
+
+  public final void runForAllGLEventListener(final GLAutoDrawable drawable, final GLEventListenerAction action) {
+      synchronized(listenersLock) {
+          final ArrayList<GLEventListener> _listeners = listeners;
+          final int listenerCount = _listeners.size();
+          for (int i=0; i < listenerCount; i++) {
+            final GLEventListener listener = _listeners.get(i) ;
+            // GLEventListener may need to be init,
+            // in case this one is added after the realization of the GLAutoDrawable
+            if( listenersToBeInit.remove(listener) ) {
+                init( listener, drawable, true /* sendReshape */, listenersToBeInit.size() + 1 == listenerCount /* setViewport if 1st init */ );
+            }
+            action.run(drawable, listener);
+          }
+      }
+  }
+
   private final void reshape(final GLEventListener listener, final GLAutoDrawable drawable,
                              final int x, final int y, final int width, final int height, final boolean setViewport, final boolean checkInit) {
     if(checkInit) {