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Bug #4409

View Documentation for an actor works once

Added by Oliver Soong over 9 years ago. Updated over 9 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Category:
general
Target version:
Start date:
09/24/2009
Due date:
% Done:

0%

Estimated time:
Bugzilla-Id:
4409

Description

I can view the documentation for an actor in the actor library once. After that, I can no longer drag actors onto the canvas and I can no longer view any more documentation.

I just updated and this is observed on linux and XP.

Restarting Kepler seems to at least reset this.

History

#1 Updated by Oliver Soong over 9 years ago

When trying to view documentation the second time, there is some error information on the console:

Error in getting actor in ShowDocumentationAction
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at ptolemy.vergil.basic.GetDocumentationAction.showDocumentation(GetDocumentationAction.java:140)

If I try to drag an actor on the canvas after that, I get an error dialog:

Change failed
Cannot create entity without a class name. in [external stream] at line 2 and column 25

There are additional console errors:

Error inside GetMomlFromLSID.getMoml(): empty error message
Error creating alternateGetMoml!
Change failed: <group><group name="auto">
<entity name="SelectionDialog">
<property name="_location" class="ptolemy.kernel.util.Location" value="{155, 245}"/>
</entity>
</group>
</group>
Change made by: ptolemy.vergil.basic.EditorDropTarget$DTListener@6faf61
Exception: Cannot create entity without a class name. in [external stream] at line 2 and column 25

#2 Updated by Oliver Soong over 9 years ago

I should clarify and add a workaround. This seems to occur only when right-clicking in the components tree and viewing documentation. The workaround is to drag the actor onto the canvas and view documentation by right-clicking on the actor, not in the components tree.

#3 Updated by ben leinfelder over 9 years ago

Still happening for me in WRP suite...retargeting to 2.0 - it seems like a bad idea to release with a bug happening for people when they are seeking help and guidance.

It seems like the object in the component tree is being modified when viewing documentation - that would seem like an unnecessary thing to do?

#4 Updated by Aaron Aaron over 9 years ago

Should be OK now.

#5 Updated by Redmine Admin about 6 years ago

Original Bugzilla ID was 4409

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