| ComponentAdded event not being received during design time? [message #94313] |
Fri, 17 June 2005 15:11  |
Eclipse User |
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Originally posted by: no.ddress.here
VE1.1M2
Thought this was working before.
My bean is a JPanel extension. During design time, I need to take
certain actions whenever a component is dropped on or removed from my
bean/JPanel. I am adding a container event listener
(addContainerListener) to the JPanel, but it is not receiving any event
calls when components are added or removed.
The JTestPanel2 test case earlier provided has this code in the
JTestPanel2.java file.
Is VE not generating container events?
Thanks,
Gerald
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| Re: ComponentAdded event not being received during design time? [message #94840 is a reply to message #94439] |
Fri, 24 June 2005 21:58  |
| Eclipse User |
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Originally posted by: no.ddress.here
I can now confirm that the container listener in the bean is not
receiving component added or removed events. Just not happening. A bug
report has been opened:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=101566
Even with your help below, I have not been able to figure out the
problem with VE.
This *appears* to be the last stumbling block to a first release of my
JGoodies FormLayout bean for VE. Without being able to receive these
events, I cannot monitor component deletes or implement DnD on the bean
container.
Any idea what it will take to fix this problem and where it might stand
in the priority queue?
Thanks,
Gerald
In article <d961ch$mr4$1@news.eclipse.org>, winchest@uk.ibm.com says...
> Hi Gerald,
>
> > My bean is a JPanel extension. During design time, I need to take
> > certain actions whenever a component is dropped on or removed from my
> > bean/JPanel. I am adding a container event listener
> > (addContainerListener) to the JPanel, but it is not receiving any event
> > calls when components are added or removed.
>
> What occurs when you drop something is two steps. First it gets added
> to the IDE's EMF model of the class and the bean proxy gets notified
> which is responsible for mediating between the IDE and the target VM.
> The class that you should look at is
> org.eclipse.ve.internal.jfc.core.ContainerProxyAdapter. This uses the
> method addComponentWithCosntraint(...) to build up an expression that is
> executed on the target VM. A helper class
> org.eclipse.ve.internal.jfc.vm.ContainerManager is used that receives
> the expression and does the actual adding of beans.
>
> Things did change in this area quite a bit (Rich did the work so he'd be
> able to help more with the details) but this was all related to
> performance where requests between the two VMs are batched up to reduce
> latency and the ContainerManager class is new. However I can't think
> why this would have stopped any event firing from occuring. It is
> possible you might need to put a debugger on the target VM - if you look
> in the help there are instructions on how to put a remote debugger onto
> it at "Using the visual editor for Java/Editing Java in the Visual
> Editor/Testing and debugging in the visual editor/Advanced options for
> debugging JavaBeans". This should let you put breakpoints on
> ContainerManager and then step into the actual JFC code that does the
> firing of the event.
>
> Best regards,
>
> Joe Winchester
>
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