Sorry for the late reply to this thread; I was travelling when your reply came in.
Thomas DeWeese wrote:
>> So now my question is: how can I know when it's safe to call >> UpdateManager um = getUpdateManager(); >> RunnableQueue rq = um.getUpdateRunnableQueue(); >> >> and add things to the RunnableQueue? > > > It is safe after the first GVT rendering completes. This is > _before_ the managerStarted call back, so this shouldn't be the > problem. You should have enough instrumentation in your code now to > figure out what the sequence of events is that leads to the Null > UpdateManager is.
Indeed, thanks to your help. It seems there were two key issues in my code:
- make sure sure UpdateManager is available (wait until gvtRenderingCompleted event) before starting DOM updates.
- don't load new SVG documents until pending DOM updates (UpdateManager's RunnableQueue) to the currently loaded doc have completed.
Although I need to complete more testing, I have not seen any more crashes since applying these two fixes. Thanks!
-- George Armhold Rutgers University eLearning Grant, DCIS
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