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Re: [platform-debug-dev] ElementContentProvider returns some children but IModelSelectionPolicy#replaceInvalidSelection is called as if the children were missing in the tree viewer
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I have not seen/heard of this issue before.
You could try turning on some tracing options to see if it helps debug the
problem, such as:
debug/viewers/contentProvider
debug/viewers/deltas
debug/viewers/updateSequence
Darin Wright
From:
Vladimir Gusev <zaboba@xxxxxxxxx>
To:
"Eclipse Platform Debug component developers list."
<platform-debug-dev@xxxxxxxxxxx>
Date:
07/28/2009 04:09 PM
Subject:
[platform-debug-dev] ElementContentProvider returns some children but
IModelSelectionPolicy#replaceInvalidSelection is called as if the
children were missing in the tree viewer
Sent by:
platform-debug-dev-bounces@xxxxxxxxxxx
Hello,
In some reproducible scenario my implementation of ElementContentProvider
returns correct children (stack frames), however when viewer tries to set
a selection on a top frame, it is not in the in the viewer's tree.
Therefore IModelSelectionPolicy#replaceInvalidSelection method is called.
In the latter can confirm that indeed children just returned by the
ElementContentProvider did not make it to the tree.
Once the selection calculated by IModelSelectionPolicy has been set,
however, I can see the children in question happily attached to their
parent (thread) in the LaunchView.
Not being able to set selection on the model's children breaks the debug
context, updates of the VariablesView and does other bad things. The user
has to know that he must manually select a child in order to proceed with
the debugging process.
It seems that the updates from the model somehow get to the viewer AFTER
the selection is being attempted to be set for the top child (frame).
How can I prevent this seemingly concurrent issue? From what I read here
http://www.slideshare.net/guest3bd2a12/debug-tutorial-custom-integration-presentation-668660
asynchronous ElementContentProvider is supposed to notify its listeners on
the completion of the child updates. It seems that somehow this
notification happens either out of order, or the content of the child
updates is somehow get broken.
Any thoughts would be greatly appreciated.
Thanks.
Vladimir_______________________________________________
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