<html>
  <head>
    <meta content="text/html; charset=ISO-8859-1"
      http-equiv="Content-Type">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    Hi Derik,<br>
    I think this change:<br>
    <meta http-equiv="content-type" content="text/html;
      charset=ISO-8859-1">
    <blockquote type="cite">
      <meta http-equiv="content-type" content="text/html;
        charset=ISO-8859-1">
    </blockquote>
    2012-08-18 17:08  eal<br>
    <br>
        * [r64430] /trunk/ptolemy/actor/Manager.java,<br>
          /trunk/ptolemy/actor/lib/hoc/LifeCycleManager.java,<br>
          /trunk/ptolemy/kernel/undo/RedoChangeRequest.java,<br>
          /trunk/ptolemy/kernel/undo/UndoChangeRequest.java,<br>
          /trunk/ptolemy/kernel/util/Changeable.java,<br>
          /trunk/ptolemy/kernel/util/NamedObj.java,<br>
          /trunk/ptolemy/moml/MoMLParser.java: Fixed long standing
    deadlock<br>
          that occurs while editing models while they run<br>
    <br>
    is what is causing the stack trace like [1] below.<br>
    <br>
    I'll take a further look tomorrow.<br>
    <br>
    This change is fairly important in that it solves a long standing
    issue, so we need<br>
    to fix the bug as opposed to just reverting.<br>
    <br>
    _Christopher<br>
    <br>
    <div class="moz-cite-prefix">On 8/20/12 6:44 PM, Derik Barseghian
      wrote:<br>
    </div>
    <blockquote
      cite="mid:4F99689C-6B55-4693-B884-D926EA5C7BAE@nceas.ucsb.edu"
      type="cite">
      <pre wrap="">Hey Christopher,
I updated my local copy of kepler to use ptII r64449 but I'm still getting errors like [1] below, wild dragging behavior, and remaining dots.
I haven't seen any rogue floating upper-left endpoints yet though.
Derik

On Aug 20, 2012, at 6:14 PM, Christopher Brooks <a class="moz-txt-link-rfc2396E" href="mailto:cxh@eecs.berkeley.edu"><cxh@eecs.berkeley.edu></a> wrote:

</pre>
      <blockquote type="cite">
        <pre wrap="">Hi Derik,

It seems like it is Edward's change:

2012-08-18 06:22  eal

    * [r64418] /trunk/diva/canvas/interactor/BasicGrabHandle.java:
      Prevent null pointer exception that can happen while editing a
      model while it is running by checking the Figure of Site for the
      connector being dragged.

The change is:
</pre>
        <blockquote type="cite">
          <pre wrap="">[dhcp-39-161:~/ptII] cxh% svn diff -r64417:64418 diva/canvas/interactor/BasicGrabHandle.java
Index: diva/canvas/interactor/BasicGrabHandle.java
===================================================================
--- diva/canvas/interactor/BasicGrabHandle.java (revision 64417)
+++ diva/canvas/interactor/BasicGrabHandle.java (revision 64418)
@@ -87,6 +87,10 @@
         // Be sure to take into account that the transformContext of the
         // site and the context of the grab handle may be different.
         TransformContext tc = getTransformContext();
+        if (_site.getFigure() == null || _site.getFigure().getParent() == null) {
+            // Cannot relocate.
+            return;
+        }
         Point2D p = _site.getPoint(tc);
         double x = p.getX();
         double y = p.getY();
</pre>
        </blockquote>
        <pre wrap="">
I rolled back  r64418 and updated diva.jar

_Christopher


On 8/20/12 3:28 PM, Derik Barseghian wrote:
</pre>
        <blockquote type="cite">
          <pre wrap="">Hey Christopher,
Dan and I are getting an error[1] when trying to drag a relation from a port today in Kepler.
I'm also seeing a few other issues that seem to happen after the above. I got an NPE[2] from a click, have strange actor-drag behavior (actor drags wildly / shoots off in one direction), and sometimes dots are left over on canvas at the point where I clicked on the port. Also when I'm dragging out a relation I also notice in the upper left corner of canvas a blue 'port endpoint' square (generally only noticeable in the overview section in the lower left). 
See attached screenshot to see dots and blue square.
Derik

[1]
java.lang.NullPointerException
 at diva.canvas.TransformContext.getTransform(TransformContext.java:161)
 at diva.canvas.AbstractSite.getPoint(AbstractSite.java:82)
 at diva.canvas.connector.BasicManhattanRouter.routeManhattan(BasicManhattanRouter.java:87)
 at diva.canvas.connector.BasicManhattanRouter.route(BasicManhattanRouter.java:68)
 at diva.canvas.connector.ManhattanConnector.route(ManhattanConnector.java:121)
 at ptolemy.vergil.actor.KielerLayoutConnector.route(KielerLayoutConnector.java:214)
 at diva.canvas.connector.AbstractConnector.reroute(AbstractConnector.java:285)
 at diva.canvas.connector.AbstractConnector.tailMoved(AbstractConnector.java:406)
 at diva.canvas.connector.AbstractConnector.setTailSite(AbstractConnector.java:398)
 at ptolemy.vergil.actor.ActorEditorGraphController$LinkCreator.mousePressed(ActorEditorGraphController.java:676)
 at diva.canvas.interactor.CompositeInteractor.mousePressed(CompositeInteractor.java:199)
 at diva.canvas.FigureLayer.dispatchEventUpTree(FigureLayer.java:551)
 at diva.canvas.FigureLayer.grabPointer(FigureLayer.java:319)
 at diva.canvas.FigureLayer.processLayerEvent(FigureLayer.java:673)
 at diva.canvas.FigureLayer.dispatchEvent(FigureLayer.java:203)
 at diva.canvas.CanvasPane.processLayerEvent(CanvasPane.java:280)
 at diva.canvas.CanvasPane.dispatchEvent(CanvasPane.java:89)
 at diva.canvas.JCanvas.internalProcessMouseEvent(JCanvas.java:520)
 at diva.canvas.JCanvas.processMouseEvent(JCanvas.java:474)
 at java.awt.Component.processEvent(Component.java:6140)
 at java.awt.Container.processEvent(Container.java:2083)
 at java.awt.Component.dispatchEventImpl(Component.java:4737)
 at java.awt.Container.dispatchEventImpl(Container.java:2141)
 at java.awt.Component.dispatchEvent(Component.java:4565)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4619)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4277)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4210)
 at java.awt.Container.dispatchEventImpl(Container.java:2127)
 at java.awt.Window.dispatchEventImpl(Window.java:2482)
 at java.awt.Component.dispatchEvent(Component.java:4565)
 at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:684)
 at java.awt.EventQueue.access$000(EventQueue.java:85)
 at java.awt.EventQueue$1.run(EventQueue.java:643)
 at java.awt.EventQueue$1.run(EventQueue.java:641)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
 at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
 at java.awt.EventQueue$2.run(EventQueue.java:657)
 at java.awt.EventQueue$2.run(EventQueue.java:655)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:654)
 at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
 at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)


[2]
      [run] Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
      [run] 
        at diva.canvas.TransformContext.getTransform(TransformContext.java:161)
      [run] 
        at diva.canvas.AbstractSite.getPoint(AbstractSite.java:82)
      [run] 
        at diva.canvas.interactor.BasicGrabHandle.relocate(BasicGrabHandle.java:94)
      [run] 
        at diva.canvas.interactor.Manipulator.relocateGrabHandles(Manipulator.java:191)
      [run] 
        at diva.canvas.interactor.Manipulator.repaint(Manipulator.java:211)
      [run] 
        at diva.canvas.interactor.Manipulator.repaint(Manipulator.java:175)
      [run] 
        at diva.canvas.AbstractFigure.repaint(AbstractFigure.java:236)
      [run] 
        at diva.canvas.AbstractFigure.repaint(AbstractFigure.java:224)
      [run] 
        at diva.canvas.FigureDecorator.setChild(FigureDecorator.java:190)
      [run] 
        at diva.canvas.connector.ConnectorManipulator.setChild(ConnectorManipulator.java:215)
      [run] 
        at diva.canvas.FigureLayer.decorate(FigureLayer.java:180)
      [run] 
        at diva.canvas.interactor.BasicSelectionRenderer.renderSelected(BasicSelectionRenderer.java:119)
      [run] 
        at diva.canvas.interactor.BasicSelectionModel.renderSelected(BasicSelectionModel.java:271)
      [run] 
        at diva.canvas.interactor.BasicSelectionModel.addSelection(BasicSelectionModel.java:101)
      [run] 
        at diva.canvas.interactor.SelectionInteractor.mousePressed(SelectionInteractor.java:172)
      [run] 
        at diva.canvas.FigureLayer.dispatchEventUpTree(FigureLayer.java:551)
      [run] 
        at diva.canvas.FigureLayer.grabPointer(FigureLayer.java:319)
      [run] 
        at diva.canvas.FigureLayer.processLayerEvent(FigureLayer.java:673)
      [run] 
        at diva.canvas.FigureLayer.dispatchEvent(FigureLayer.java:203)
      [run] 
        at diva.canvas.CanvasPane.processLayerEvent(CanvasPane.java:280)
      [run] 
        at diva.canvas.CanvasPane.dispatchEvent(CanvasPane.java:89)
      [run] 
        at diva.canvas.JCanvas.internalProcessMouseEvent(JCanvas.java:520)
      [run] 
        at diva.canvas.JCanvas.processMouseEvent(JCanvas.java:474)
      [run] 
        at java.awt.Component.processEvent(Component.java:6140)
      [run] 
        at java.awt.Container.processEvent(Container.java:2083)
      [run] 
        at java.awt.Component.dispatchEventImpl(Component.java:4737)
      [run] 
        at java.awt.Container.dispatchEventImpl(Container.java:2141)
      [run] 
        at java.awt.Component.dispatchEvent(Component.java:4565)
      [run] 
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4619)
      [run] 
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4277)
      [run] 
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4210)
      [run] 
        at java.awt.Container.dispatchEventImpl(Container.java:2127)
      [run] 
        at java.awt.Window.dispatchEventImpl(Window.java:2482)
      [run] 
        at java.awt.Component.dispatchEvent(Component.java:4565)
      [run] 
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:684)
      [run] 
        at java.awt.EventQueue.access$000(EventQueue.java:85)
      [run] 
        at java.awt.EventQueue$1.run(EventQueue.java:643)
      [run] 
        at java.awt.EventQueue$1.run(EventQueue.java:641)
      [run] 
        at java.security.AccessController.doPrivileged(Native Method)
      [run] 
        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
      [run] 
        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
      [run] 
        at java.awt.EventQueue$2.run(EventQueue.java:657)
      [run] 
        at java.awt.EventQueue$2.run(EventQueue.java:655)
      [run] 
        at java.security.AccessController.doPrivileged(Native Method)
      [run] 
        at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
      [run] 
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:654)
      [run] 
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
      [run] 
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
      [run] 
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
      [run] 
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
      [run] 
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
      [run] 
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

<Mail Attachment.png>

</pre>
        </blockquote>
        <pre wrap="">
-- 
Christopher Brooks, PMP                       University of California
CHESS Executive Director                      US Mail: 337 Cory Hall
Programmer/Analyst CHESS/Ptolemy/Trust        Berkeley, CA 94720-1774
ph: 510.643.9841                                (Office: 545Q Cory)
home: (F-Tu) 707.665.0131 cell: 707.332.0670 
</pre>
      </blockquote>
      <pre wrap="">
</pre>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Christopher Brooks, PMP                       University of California
CHESS Executive Director                      US Mail: 337 Cory Hall
Programmer/Analyst CHESS/Ptolemy/Trust        Berkeley, CA 94720-1774
ph: 510.643.9841                                (Office: 545Q Cory)
home: (F-Tu) 707.665.0131 cell: 707.332.0670 </pre>
  </body>
</html>