NEWT AWTAdapter: Add notion of consuming the AWT InputEvent (will be used for key events); Allow AWTAdapter to be lazily setup w/ downstream object.

5 files changed, 188 insertions, 90 deletions

diff --git a/src/newt/classes/com/jogamp/newt/event/awt/AWTAdapter.java b/src/newt/classes/com/jogamp/newt/event/awt/AWTAdapter.java
index e3bf18448..977b38dd0 100644
--- a/src/newt/classes/com/jogamp/newt/event/awt/AWTAdapter.java
+++ b/src/newt/classes/com/jogamp/newt/event/awt/AWTAdapter.java
@@ -117,17 +117,19 @@ public abstract class AWTAdapter implements java.util.EventListener
 
     com.jogamp.newt.event.NEWTEventListener newtListener;
     com.jogamp.newt.Window newtWindow;
+    boolean consumeAWTEvent;
 
     /**
      * Simply wrap aroung a NEWT EventListener, exposed as an AWT EventListener.<br>
      * The NEWT EventListener will be called when an event happens.<br>
      */
-    public AWTAdapter(com.jogamp.newt.event.NEWTEventListener newtListener) {
+    protected AWTAdapter(com.jogamp.newt.event.NEWTEventListener newtListener) {
         if(null==newtListener) {
             throw new RuntimeException("Argument newtListener is null");
         }
         this.newtListener = newtListener;
         this.newtWindow = null;
+        this.consumeAWTEvent = false;
     }
 
     /**
@@ -135,7 +137,7 @@ public abstract class AWTAdapter implements java.util.EventListener
      * where the given NEWT Window impersonates as the event's source.
      * The NEWT EventListener will be called when an event happens.<br>
      */
-    public AWTAdapter(com.jogamp.newt.event.NEWTEventListener newtListener, com.jogamp.newt.Window newtProxy) {
+    protected AWTAdapter(com.jogamp.newt.event.NEWTEventListener newtListener, com.jogamp.newt.Window newtProxy) {
         if(null==newtListener) {
             throw new RuntimeException("Argument newtListener is null");
         }
@@ -144,6 +146,7 @@ public abstract class AWTAdapter implements java.util.EventListener
         }
         this.newtListener = newtListener;
         this.newtWindow = newtProxy;
+        this.consumeAWTEvent = false;
     }
 
     /**
@@ -151,22 +154,51 @@ public abstract class AWTAdapter implements java.util.EventListener
      * Once attached to an AWT component, it sends the converted AWT events to the NEWT downstream window.<br>
      * This is only supported with EDT enabled!
      */
-    public AWTAdapter(com.jogamp.newt.Window downstream) {
+    protected AWTAdapter(com.jogamp.newt.Window downstream) {
+        this();
+        setDownstream(downstream);
+    }
+
+    public AWTAdapter() {
+        this.newtListener = null;
+        this.newtWindow = null;
+        this.consumeAWTEvent = false;
+    }
+
+    /**
+     * Setup a pipeline adapter, AWT EventListener.<br>
+     * Once attached to an AWT component, it sends the converted AWT events to the NEWT downstream window.<br>
+     * This is only supported with EDT enabled!
+     */
+    public synchronized AWTAdapter setDownstream(com.jogamp.newt.Window downstream) {
         if(null==downstream) {
             throw new RuntimeException("Argument downstream is null");
         }
         this.newtListener = null;
         this.newtWindow = downstream;
+        this.consumeAWTEvent = false;
         if( null == newtWindow.getScreen().getDisplay().getEDTUtil() ) {
             throw new RuntimeException("EDT not enabled");
         }
+        return this;
+    }
+
+    /** Removes all references, downstream and NEWT-EventListener. */
+    public synchronized AWTAdapter clear() {
+        this.newtListener = null;
+        this.newtWindow = null;
+        return this;
+    }
+
+    public final synchronized void setConsumeAWTEvent(boolean v) {
+        this.consumeAWTEvent = v;
     }
 
-    public final com.jogamp.newt.Window getNewtWindow() {
+    public final synchronized com.jogamp.newt.Window getNewtWindow() {
         return newtWindow;
     }
 
-    public final com.jogamp.newt.event.NEWTEventListener getNewtEventListener() {
+    public final synchronized com.jogamp.newt.event.NEWTEventListener getNewtEventListener() {
         return newtListener;
     }
 
diff --git a/src/newt/classes/com/jogamp/newt/event/awt/AWTKeyAdapter.java b/src/newt/classes/com/jogamp/newt/event/awt/AWTKeyAdapter.java
index f6f11b81f..e8545aa52 100644
--- a/src/newt/classes/com/jogamp/newt/event/awt/AWTKeyAdapter.java
+++ b/src/newt/classes/com/jogamp/newt/event/awt/AWTKeyAdapter.java
@@ -49,21 +49,28 @@ public class AWTKeyAdapter extends AWTAdapter implements java.awt.event.KeyListe
         super(downstream);
     }
 
+    public AWTKeyAdapter() {
+        super();
+    }
+
     @Override
-    public AWTAdapter addTo(java.awt.Component awtComponent) {
+    public synchronized AWTAdapter addTo(java.awt.Component awtComponent) {
         awtComponent.addKeyListener(this);
         return this;
     }
 
     @Override
-    public AWTAdapter removeFrom(java.awt.Component awtComponent) {
+    public synchronized AWTAdapter removeFrom(java.awt.Component awtComponent) {
         awtComponent.removeKeyListener(this);
         return this;
     }
 
     @Override
-    public void keyPressed(java.awt.event.KeyEvent e) {
+    public synchronized void keyPressed(java.awt.event.KeyEvent e) {
         final com.jogamp.newt.event.KeyEvent event = AWTNewtEventFactory.createKeyEvent(com.jogamp.newt.event.KeyEvent.EVENT_KEY_PRESSED, e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.KeyListener)newtListener).keyPressed(event);
         } else {
@@ -72,8 +79,11 @@ public class AWTKeyAdapter extends AWTAdapter implements java.awt.event.KeyListe
     }
 
     @Override
-    public void keyReleased(java.awt.event.KeyEvent e) {
+    public synchronized void keyReleased(java.awt.event.KeyEvent e) {
         final com.jogamp.newt.event.KeyEvent event = AWTNewtEventFactory.createKeyEvent(com.jogamp.newt.event.KeyEvent.EVENT_KEY_RELEASED, e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.KeyListener)newtListener).keyReleased(event);
         } else {
@@ -82,7 +92,10 @@ public class AWTKeyAdapter extends AWTAdapter implements java.awt.event.KeyListe
     }
 
     @Override
-    public void keyTyped(java.awt.event.KeyEvent e) {
+    public synchronized void keyTyped(java.awt.event.KeyEvent e) {
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
     }
 }
 
diff --git a/src/newt/classes/com/jogamp/newt/event/awt/AWTMouseAdapter.java b/src/newt/classes/com/jogamp/newt/event/awt/AWTMouseAdapter.java
index 73a02c9fc..365bc4e2a 100644
--- a/src/newt/classes/com/jogamp/newt/event/awt/AWTMouseAdapter.java
+++ b/src/newt/classes/com/jogamp/newt/event/awt/AWTMouseAdapter.java
@@ -46,8 +46,12 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
         super(downstream);
     }
 
+    public AWTMouseAdapter() {
+        super();
+    }
+
     @Override
-    public AWTAdapter addTo(java.awt.Component awtComponent) {
+    public synchronized AWTAdapter addTo(java.awt.Component awtComponent) {
         awtComponent.addMouseListener(this);
         awtComponent.addMouseMotionListener(this);
         awtComponent.addMouseWheelListener(this);
@@ -55,7 +59,7 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
     }
 
     @Override
-    public AWTAdapter removeFrom(java.awt.Component awtComponent) {
+    public synchronized AWTAdapter removeFrom(java.awt.Component awtComponent) {
         awtComponent.removeMouseListener(this);
         awtComponent.removeMouseMotionListener(this);
         awtComponent.removeMouseWheelListener(this);
@@ -63,8 +67,11 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
     }
 
     @Override
-    public void mouseClicked(java.awt.event.MouseEvent e) {
+    public synchronized void mouseClicked(java.awt.event.MouseEvent e) {
         com.jogamp.newt.event.MouseEvent event = AWTNewtEventFactory.createMouseEvent(e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.MouseListener)newtListener).mouseClicked(event);
         } else {
@@ -73,8 +80,11 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
     }
 
     @Override
-    public void mouseEntered(java.awt.event.MouseEvent e) {
+    public synchronized void mouseEntered(java.awt.event.MouseEvent e) {
         com.jogamp.newt.event.MouseEvent event = AWTNewtEventFactory.createMouseEvent(e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.MouseListener)newtListener).mouseEntered(event);
         } else {
@@ -83,8 +93,11 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
     }
 
     @Override
-    public void mouseExited(java.awt.event.MouseEvent e) {
+    public synchronized void mouseExited(java.awt.event.MouseEvent e) {
         com.jogamp.newt.event.MouseEvent event = AWTNewtEventFactory.createMouseEvent(e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.MouseListener)newtListener).mouseExited(event);
         } else {
@@ -93,8 +106,11 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
     }
 
     @Override
-    public void mousePressed(java.awt.event.MouseEvent e) {
+    public synchronized void mousePressed(java.awt.event.MouseEvent e) {
         com.jogamp.newt.event.MouseEvent event = AWTNewtEventFactory.createMouseEvent(e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.MouseListener)newtListener).mousePressed(event);
         } else {
@@ -103,8 +119,11 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
     }
 
     @Override
-    public void mouseReleased(java.awt.event.MouseEvent e) {
+    public synchronized void mouseReleased(java.awt.event.MouseEvent e) {
         com.jogamp.newt.event.MouseEvent event = AWTNewtEventFactory.createMouseEvent(e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.MouseListener)newtListener).mouseReleased(event);
         } else {
@@ -113,8 +132,11 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
     }
 
     @Override
-    public void mouseDragged(java.awt.event.MouseEvent e) {
+    public synchronized void mouseDragged(java.awt.event.MouseEvent e) {
         com.jogamp.newt.event.MouseEvent event = AWTNewtEventFactory.createMouseEvent(e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.MouseListener)newtListener).mouseDragged(event);
         } else {
@@ -123,8 +145,11 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
     }
 
     @Override
-    public void mouseMoved(java.awt.event.MouseEvent e) {
+    public synchronized void mouseMoved(java.awt.event.MouseEvent e) {
         com.jogamp.newt.event.MouseEvent event = AWTNewtEventFactory.createMouseEvent(e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.MouseListener)newtListener).mouseMoved(event);
         } else {
@@ -133,8 +158,11 @@ public class AWTMouseAdapter extends AWTAdapter implements java.awt.event.MouseL
     }
 
     @Override
-    public void mouseWheelMoved(java.awt.event.MouseWheelEvent e) {
+    public synchronized void mouseWheelMoved(java.awt.event.MouseWheelEvent e) {
         com.jogamp.newt.event.MouseEvent event = AWTNewtEventFactory.createMouseEvent(e, newtWindow);
+        if( consumeAWTEvent ) {
+            e.consume();
+        }
         if(null!=newtListener) {
             ((com.jogamp.newt.event.MouseListener)newtListener).mouseWheelMoved(event);
         } else {
diff --git a/src/newt/classes/com/jogamp/newt/event/awt/AWTWindowAdapter.java b/src/newt/classes/com/jogamp/newt/event/awt/AWTWindowAdapter.java
index 8a9a2a49f..57821fcb1 100644
--- a/src/newt/classes/com/jogamp/newt/event/awt/AWTWindowAdapter.java
+++ b/src/newt/classes/com/jogamp/newt/event/awt/AWTWindowAdapter.java
@@ -49,16 +49,17 @@ public class AWTWindowAdapter
     public AWTWindowAdapter(com.jogamp.newt.Window downstream) {
         super(downstream);
     }
+    public AWTWindowAdapter() {
+        super();
+    }
 
     @Override
-    public AWTAdapter addTo(java.awt.Component awtComponent) {
+    public synchronized AWTAdapter addTo(java.awt.Component awtComponent) {
         java.awt.Window win = getWindow(awtComponent);
         awtComponent.addComponentListener(this);
         awtComponent.addFocusListener(this);
-        if( null == windowClosingListener ) {
+        if( null != win && null == windowClosingListener ) {
             windowClosingListener = new WindowClosingListener();
-        }
-        if( null != win ) {
             win.addWindowListener(windowClosingListener);
         }
         if(awtComponent instanceof java.awt.Window) {
@@ -67,7 +68,7 @@ public class AWTWindowAdapter
         return this;
     }
 
-    public AWTAdapter removeWindowClosingFrom(java.awt.Component awtComponent) {
+    public synchronized AWTAdapter removeWindowClosingFrom(java.awt.Component awtComponent) {
         java.awt.Window win = getWindow(awtComponent);
         if( null != win && null != windowClosingListener ) {
             win.removeWindowListener(windowClosingListener);
@@ -76,7 +77,7 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public AWTAdapter removeFrom(java.awt.Component awtComponent) {
+    public synchronized AWTAdapter removeFrom(java.awt.Component awtComponent) {
         awtComponent.removeFocusListener(this);
         awtComponent.removeComponentListener(this);
         removeWindowClosingFrom(awtComponent);
@@ -97,7 +98,7 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public void focusGained(java.awt.event.FocusEvent e) {
+    public synchronized void focusGained(java.awt.event.FocusEvent e) {
         com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: focusGained: "+e+" -> "+event);
@@ -110,7 +111,7 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public void focusLost(java.awt.event.FocusEvent e) {
+    public synchronized void focusLost(java.awt.event.FocusEvent e) {
         com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: focusLost: "+e+" -> "+event);
@@ -123,7 +124,7 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public void componentResized(java.awt.event.ComponentEvent e) {
+    public synchronized void componentResized(java.awt.event.ComponentEvent e) {
         com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
         if(DEBUG_IMPLEMENTATION) {
             final java.awt.Component c = e.getComponent();
@@ -148,7 +149,7 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public void componentMoved(java.awt.event.ComponentEvent e) {
+    public synchronized void componentMoved(java.awt.event.ComponentEvent e) {
         com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: componentMoved: "+e+" -> "+event);
@@ -161,7 +162,7 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public void componentShown(java.awt.event.ComponentEvent e) {
+    public synchronized void componentShown(java.awt.event.ComponentEvent e) {
         final java.awt.Component comp = e.getComponent();
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: componentShown: "+comp);
@@ -179,7 +180,7 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public void componentHidden(java.awt.event.ComponentEvent e) {
+    public synchronized void componentHidden(java.awt.event.ComponentEvent e) {
         final java.awt.Component comp = e.getComponent();
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: componentHidden: "+comp);
@@ -197,7 +198,7 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public void windowActivated(java.awt.event.WindowEvent e) {
+    public synchronized void windowActivated(java.awt.event.WindowEvent e) {
         com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
         if(null!=newtListener) {
             ((com.jogamp.newt.event.WindowListener)newtListener).windowGainedFocus(event);
@@ -207,13 +208,13 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public void windowClosed(java.awt.event.WindowEvent e) { }
+    public synchronized void windowClosed(java.awt.event.WindowEvent e) { }
 
     @Override
-    public void windowClosing(java.awt.event.WindowEvent e) { }
+    public synchronized void windowClosing(java.awt.event.WindowEvent e) { }
 
     @Override
-    public void windowDeactivated(java.awt.event.WindowEvent e) {
+    public synchronized void windowDeactivated(java.awt.event.WindowEvent e) {
         com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
         if(null!=newtListener) {
             ((com.jogamp.newt.event.WindowListener)newtListener).windowLostFocus(event);
@@ -223,31 +224,35 @@ public class AWTWindowAdapter
     }
 
     @Override
-    public void windowDeiconified(java.awt.event.WindowEvent e) { }
+    public synchronized void windowDeiconified(java.awt.event.WindowEvent e) { }
 
     @Override
-    public void windowIconified(java.awt.event.WindowEvent e) { }
+    public synchronized void windowIconified(java.awt.event.WindowEvent e) { }
 
     @Override
-    public void windowOpened(java.awt.event.WindowEvent e) { }
+    public synchronized void windowOpened(java.awt.event.WindowEvent e) { }
 
     class WindowClosingListener implements java.awt.event.WindowListener {
         @Override
         public void windowClosing(java.awt.event.WindowEvent e) {
-            com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
-            if(null!=newtListener) {
-                ((com.jogamp.newt.event.WindowListener)newtListener).windowDestroyNotify(event);
-            } else {
-                enqueueEvent(true, event);
+            synchronized( AWTWindowAdapter.this ) {
+                com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
+                if(null!=newtListener) {
+                    ((com.jogamp.newt.event.WindowListener)newtListener).windowDestroyNotify(event);
+                } else {
+                    enqueueEvent(true, event);
+                }
             }
         }
         @Override
         public void windowClosed(java.awt.event.WindowEvent e) {
-            com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
-            if(null!=newtListener) {
-                ((com.jogamp.newt.event.WindowListener)newtListener).windowDestroyed(event);
-            } else {
-                enqueueEvent(true, event);
+            synchronized( AWTWindowAdapter.this ) {
+                com.jogamp.newt.event.WindowEvent event = AWTNewtEventFactory.createWindowEvent(e, newtWindow);
+                if(null!=newtListener) {
+                    ((com.jogamp.newt.event.WindowListener)newtListener).windowDestroyed(event);
+                } else {
+                    enqueueEvent(true, event);
+                }
             }
         }
 
diff --git a/src/newt/classes/jogamp/newt/awt/event/AWTParentWindowAdapter.java b/src/newt/classes/jogamp/newt/awt/event/AWTParentWindowAdapter.java
index 4bcb0fc82..add2f291e 100644
--- a/src/newt/classes/jogamp/newt/awt/event/AWTParentWindowAdapter.java
+++ b/src/newt/classes/jogamp/newt/awt/event/AWTParentWindowAdapter.java
@@ -50,95 +50,115 @@ public class AWTParentWindowAdapter extends AWTWindowAdapter implements java.awt
         super(downstream);
         this.downstreamParent = downstreamParent;
     }
+    public AWTParentWindowAdapter() {
+        super();
+    }
+    public AWTParentWindowAdapter setDownstream(NativeWindow downstreamParent, com.jogamp.newt.Window downstream) {
+        setDownstream(downstream);
+        this.downstreamParent = downstreamParent;
+        return this;
+    }
 
     @Override
-    public AWTAdapter addTo(java.awt.Component awtComponent) {
+    public synchronized AWTAdapter clear() {
+        super.clear();
+        this.downstreamParent = null;
+        return this;
+    }
+
+    @Override
+    public synchronized AWTAdapter addTo(java.awt.Component awtComponent) {
         awtComponent.addHierarchyListener(this);
         return super.addTo(awtComponent);
     }
 
     @Override
-    public AWTAdapter removeFrom(java.awt.Component awtComponent) {
+    public synchronized AWTAdapter removeFrom(java.awt.Component awtComponent) {
         awtComponent.removeHierarchyListener(this);
         return super.removeFrom(awtComponent);
     }
 
     @Override
-    public void focusGained(java.awt.event.FocusEvent e) {
+    public synchronized void focusGained(java.awt.event.FocusEvent e) {
         // forward focus to NEWT child
         final com.jogamp.newt.Window newtChild = getNewtWindow();
-        final boolean isOnscreen = newtChild.isNativeValid() && newtChild.getGraphicsConfiguration().getChosenCapabilities().isOnscreen();
-        final boolean isParent = downstreamParent == newtChild.getParent();
-        final boolean isFullscreen = newtChild.isFullscreen();
-        if(DEBUG_IMPLEMENTATION) {
-            System.err.println("AWT: focusGained: onscreen "+ isOnscreen+", "+e+", isParent: "+isParent+", isFS "+isFullscreen);
-        }
-        if(isParent) {
-            if(isOnscreen && !isFullscreen) {
-                KeyboardFocusManager.getCurrentKeyboardFocusManager().clearGlobalFocusOwner();
+        if( null != newtChild ) {
+            final boolean isOnscreen = newtChild.isNativeValid() && newtChild.getGraphicsConfiguration().getChosenCapabilities().isOnscreen();
+            final boolean isParent = downstreamParent == newtChild.getParent();
+            final boolean isFullscreen = newtChild.isFullscreen();
+            if(DEBUG_IMPLEMENTATION) {
+                System.err.println("AWT: focusGained: onscreen "+ isOnscreen+", "+e+", isParent: "+isParent+", isFS "+isFullscreen);
+            }
+            if(isParent) {
+                if(isOnscreen && !isFullscreen) {
+                    KeyboardFocusManager.getCurrentKeyboardFocusManager().clearGlobalFocusOwner();
+                }
+                newtChild.requestFocus(false);
             }
-            newtChild.requestFocus(false);
         }
     }
 
     @Override
-    public void focusLost(java.awt.event.FocusEvent e) {
+    public synchronized void focusLost(java.awt.event.FocusEvent e) {
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: focusLost: "+ e);
         }
     }
 
     @Override
-    public void componentResized(java.awt.event.ComponentEvent e) {
+    public synchronized void componentResized(java.awt.event.ComponentEvent e) {
         // Need to resize the NEWT child window
         // the resized event will be send via the native window feedback.
         final java.awt.Component comp = e.getComponent();
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: componentResized: "+comp);
         }
-        final Window newtWindow = getNewtWindow();
-        newtWindow.runOnEDTIfAvail(false, new Runnable() {
-            @Override
-            public void run() {
-                int cw = comp.getWidth();
-                int ch = comp.getHeight();
-                if( 0 < cw && 0 < ch ) {
-                    if( newtWindow.getWidth() != cw || newtWindow.getHeight() != ch ) {
-                        newtWindow.setSize(cw, ch);
-                        if(comp.isVisible() != newtWindow.isVisible()) {
-                            newtWindow.setVisible(comp.isVisible());
+        final Window newtChild = getNewtWindow();
+        if( null != newtChild ) {
+            newtChild.runOnEDTIfAvail(false, new Runnable() {
+                @Override
+                public void run() {
+                    int cw = comp.getWidth();
+                    int ch = comp.getHeight();
+                    if( 0 < cw && 0 < ch ) {
+                        if( newtChild.getWidth() != cw || newtChild.getHeight() != ch ) {
+                            newtChild.setSize(cw, ch);
+                            if(comp.isVisible() != newtChild.isVisible()) {
+                                newtChild.setVisible(comp.isVisible());
+                            }
                         }
+                    } else if(newtChild.isVisible()) {
+                        newtChild.setVisible(false);
                     }
-                } else if(newtWindow.isVisible()) {
-                    newtWindow.setVisible(false);
-                }
-            }});
+                }});
+        }
     }
 
     @Override
-    public void componentMoved(java.awt.event.ComponentEvent e) {
+    public synchronized void componentMoved(java.awt.event.ComponentEvent e) {
         if(DEBUG_IMPLEMENTATION) {
             System.err.println("AWT: componentMoved: "+e);
         }
-        final Window newtWindow = getNewtWindow();
-        if(newtWindow.getDelegatedWindow() instanceof DriverUpdatePosition) {
-            ((DriverUpdatePosition)newtWindow.getDelegatedWindow()).updatePosition(0, 0);
+        final Window newtChild = getNewtWindow();
+        if( null != newtChild && ( newtChild.getDelegatedWindow() instanceof DriverUpdatePosition ) ) {
+            ((DriverUpdatePosition)newtChild.getDelegatedWindow()).updatePosition(0, 0);
         }
     }
 
     @Override
-    public void windowActivated(java.awt.event.WindowEvent e) {
+    public synchronized void windowActivated(java.awt.event.WindowEvent e) {
         // no propagation to NEWT child window
     }
 
     @Override
-    public void windowDeactivated(java.awt.event.WindowEvent e) {
+    public synchronized void windowDeactivated(java.awt.event.WindowEvent e) {
         // no propagation to NEWT child window
     }
 
     @Override
-    public void hierarchyChanged(java.awt.event.HierarchyEvent e) {
-        if( null == getNewtEventListener() ) {
+    public synchronized void hierarchyChanged(java.awt.event.HierarchyEvent e) {
+        final Window newtChild = getNewtWindow();
+        if( null != newtChild && null == getNewtEventListener() ) {
             long bits = e.getChangeFlags();
             final java.awt.Component changed = e.getChanged();
             if( 0 != ( java.awt.event.HierarchyEvent.SHOWING_CHANGED & bits ) ) {
@@ -146,11 +166,11 @@ public class AWTParentWindowAdapter extends AWTWindowAdapter implements java.awt
                 if(DEBUG_IMPLEMENTATION) {
                     System.err.println("AWT: hierarchyChanged SHOWING_CHANGED: showing "+showing+", "+changed+", source "+e.getComponent());
                 }
-                getNewtWindow().runOnEDTIfAvail(false, new Runnable() {
+                newtChild.runOnEDTIfAvail(false, new Runnable() {
                     @Override
                     public void run() {
-                        if(getNewtWindow().isVisible() != showing) {
-                            getNewtWindow().setVisible(showing);
+                        if(newtChild.isVisible() != showing) {
+                            newtChild.setVisible(showing);
                         }
                     }});
             }