NEWT Add: add<type>Listener(int index, <type>Listener l) ; get<type>Listener(int index) ; NEWTEvent attachments

NEWT Add:
    add<type>Listener(int index, <type>Listener l) ;
    get<type>Listener(int index) ;

    NEWTEvent attachments for listener to listener communication
    via object passing. This methodology is similar to the 'Atom'
    attachment of native systems.
    It is preferred to a 'consume()/isConsumed()' pattern,
    since it is less flexible and would 'endanger' system events.

TODO: <type>Listener[] get<type>Listeners() doesn't work and was always buggy.

1 files changed, 8 insertions, 1 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/impl/GLDrawableHelper.java b/src/jogl/classes/com/jogamp/opengl/impl/GLDrawableHelper.java
index 8cc12ca89..fcd662048 100644
--- a/src/jogl/classes/com/jogamp/opengl/impl/GLDrawableHelper.java
+++ b/src/jogl/classes/com/jogamp/opengl/impl/GLDrawableHelper.java
@@ -66,8 +66,15 @@ public class GLDrawableHelper {
   }
 
   public synchronized void addGLEventListener(GLEventListener listener) {
+    addGLEventListener(-1, listener);
+  }
+
+  public synchronized void addGLEventListener(int index, GLEventListener listener) {
+    if(0>index) {
+        index = listeners.size();
+    }
     List newListeners = (List) ((ArrayList) listeners).clone();
-    newListeners.add(listener);
+    newListeners.add(index, listener);
     listeners = newListeners;
   }