Bug 665 (part 1) - Allow dis-association of GLContext's GLDrawable ..

Changes allowing re-association (incl. null) of GLContext/GLDrawable:

- GLAutoDrawable: Refine API doc 'setContext(..)'

- GLContext: Refine API doc: 'setGLDrawable(..)' 'getGLDrawable()'

- GLContextImpl.setGLDrawable(): Handle null drawable

- GLAutoDrawableDelegate/GLAutoDrawableBase: Allow null GLContext

- GLDrawableHelper.switchContext(..)/recreateGLDrawable(): Balance GLContext.setGLDrawable(..) calls

- New GLEventListenerState, holding state vector [GLEventListener, GLContext, .. ]
  impl. relocation of all components from/to GLAutoDrawable.

- GLDrawableUtil
  - Using GLEventListenerState for swapGLContextAndAllGLEventListener(..)

+++

NEWT Window*:
  - getDisplayHandle() is 'final', no more 'shortcut' code allowed
    due to re-association incl. display handle.

  - close*:
    - close config's device (was missing)
    - null config

+++

Changes allowing reconfig of Display handle as required
to re-associate pre-existing GLContext to a 'window':

- AbstractGraphicsDevice: Add isHandleOwner() / clearHandleOwner()
  - Impl. in X11GraphicsDevice and EGLGraphicsDevice, NOP in DefaultGraphicsDevice

- DefaultGraphicsConfiguration add 'setScreen(..)'

- MutableGraphicsConfiguration
  - Make DefaultGraphicsConfiguration.setScreen(..) public

- NativeWindowFactory add 'createScreen(String type, AbstractGraphicsDevice device, int screen)'
  - Refactored from SWTAccessor

- NativeWindow x11ErrorHandler: Dump Stack Trace in DEBUG mode, always.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/GLAutoDrawableDelegate.java b/src/jogl/classes/com/jogamp/opengl/GLAutoDrawableDelegate.java
index 38a8deef8..38315dc72 100644
--- a/src/jogl/classes/com/jogamp/opengl/GLAutoDrawableDelegate.java
+++ b/src/jogl/classes/com/jogamp/opengl/GLAutoDrawableDelegate.java
@@ -65,7 +65,10 @@ import jogamp.opengl.GLDrawableImpl;
 public class GLAutoDrawableDelegate extends GLAutoDrawableBase implements GLAutoDrawable {
     /**
      * @param drawable a valid and already realized {@link GLDrawable}
-     * @param context a valid {@link GLContext}, may not be made current (created) yet.
+     * @param context a valid {@link GLContext}, 
+     *                may not have been made current (created) yet,
+     *                may not be associated w/ <code>drawable<code> yet, 
+     *                may be <code>null</code> for lazy initialization
      * @param upstreamWidget optional UI element holding this instance, see {@link #getUpstreamWidget()}.
      * @param ownDevice pass <code>true</code> if {@link AbstractGraphicsDevice#close()} shall be issued,
      *                  otherwise pass <code>false</code>. Closing the device is required in case
@@ -78,9 +81,6 @@ public class GLAutoDrawableDelegate extends GLAutoDrawableBase implements GLAuto
         if(null == drawable) {
             throw new IllegalArgumentException("null drawable");
         }
-        if(null == context) {
-            throw new IllegalArgumentException("null context");
-        }        
         if(!drawable.isRealized()) {
             throw new IllegalArgumentException("drawable not realized");
         }