There appears to be one more missing piece, though, because my attempt
provokes an assertion error that appears to be claiming that my protocol,
derived from a LinkProtocol, is not actually a LinkProtocol:

  File "pvsvn.py", line 41, in initialize

    self.registerVtkWebProtocol(self.testbutton())

  File
"/Applications/ParaView-5.4.1-1232-g1496380e37.app/Contents/Python/vtkmodules/web/wslink.py",
line 63, in registerVtkWebProtocol

    self.registerLinkProtocol(protocol)

  File
"/Applications/ParaView-5.4.1-1232-g1496380e37.app/Contents/Python/wslink/websocket.py",
line 89, in registerLinkProtocol

    assert( isinstance(protocol, LinkProtocol))

AssertionError

At least I think that's what it's saying.

Thank you,

 -Tom

On Thu, Feb 22, 2018 at 6:25 AM, Sgouros, Thomas <thomas_sgou...@brown.edu>
wrote:

> Turns out you can't use capital letters for the protocol options (what
> should I call them?), according to the discussion at this link. Some people
> here might find it familiar: https://groups.google.com/forum/#!topic/
> autobahnws/mkjF21Fb8ow
>
>  -Tom
>
>
>
> On Wed, Feb 21, 2018 at 7:56 PM, Scott Wittenburg <
> scott.wittenb...@kitware.com> wrote:
>
>> That actually looks ok to me.  Why isn't pvpython happy with it?  What
>> version of ParaView are you running?  If it's a recent ParaView and the
>> problem is you can't import wslink, then setting up a virtualenv with the
>> missing modules (wslink and its dependencies) might be what you need.  See
>> this blog post for more information on how to use pvpython but also bring
>> in the modules in your virtualenv:
>>
>> https://blog.kitware.com/using-pvpython-and-virtualenv/
>>
>> If the problem is something else, we might need more details.
>>
>> Hope this helps.
>>
>> Cheers,
>> Scott
>>
>>
>>
>> On Wed, Feb 21, 2018 at 5:44 PM, Sgouros, Thomas <
>> thomas_sgou...@brown.edu> wrote:
>>
>>> Thank you that's very helpful. Where will I find how to define the
>>> protocols on the python side? I've only found a wslink example that looks
>>> like this:
>>>
>>> from wslink import register as exportRPC
>>> from wslink.websocket import LinkProtocol
>>>
>>> class myProtocol(LinkProtocol):
>>>     def __init__(self):
>>>         super(myProtocol, self).__init__()
>>>
>>>     @exportRPC("myprotocol.testButton")
>>>     def testButton(self, nothing):
>>>         print("******* HELP ********")
>>>
>>> Pvpython isn't happy with this, but I'm not sure where to look for the
>>> right way to do it.
>>>
>>> Thank you,
>>>
>>>  -Tom
>>>
>>> On Wed, Feb 21, 2018 at 6:55 PM, Scott Wittenburg <
>>> scott.wittenb...@kitware.com> wrote:
>>>
>>>> Yes that link is old and broken, but if you navigate through the api
>>>> docs links, that is working.  Here's the direct link to the page you
>>>> couldn't find though:
>>>>
>>>> https://kitware.github.io/paraviewweb/api/IO_WebSocket_ParaV
>>>> iewWebClient.html
>>>>
>>>>
>>>>
>>>> On Wed, Feb 21, 2018 at 4:43 PM, Sgouros, Thomas <
>>>> thomas_sgou...@brown.edu> wrote:
>>>>
>>>>> Hello all:
>>>>>
>>>>> Got some nice looking buttons and widgets, but I can't seem to find
>>>>> examples of how to deliver the button press or other widget output to my
>>>>> pvpython server. I imagine the steps are:
>>>>>
>>>>> 1. Create a protocol on the python side. Can I use wslink.register, or
>>>>> is there paraviewweb functionality I should be using?
>>>>>
>>>>> 2. Create a matching protocol on the js side, with
>>>>> ParaviewWebClient.createClient(), but I'm not seeing how to link the
>>>>> protocol to a function that can be linked to a button press.
>>>>>
>>>>> Also, this page, found via a google search, seems potentially useful,
>>>>> but gives me a 404.
>>>>>
>>>>> https://kitware.github.io/paraviewweb/api/ParaViewWebClient.html
>>>>>
>>>>> Many thanks,
>>>>>
>>>>>  -Tom
>>>>>
>>>>> _______________________________________________
>>>>> Powered by www.kitware.com
>>>>>
>>>>> Visit other Kitware open-source projects at
>>>>> http://www.kitware.com/opensource/opensource.html
>>>>>
>>>>> Please keep messages on-topic and check the ParaView Wiki at:
>>>>> http://paraview.org/Wiki/ParaView
>>>>>
>>>>> Search the list archives at: http://markmail.org/search/?q=ParaView
>>>>>
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>>>>>
>>>>>
>>>>
>>>
>>
>
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