Hello,
I am working on adjusting SageMathCell to Volker's display system and have
a few questions mostly for him, but perhaps of interest to others as well:
1) What exactly is the point of display_immediately and when is it supposed
to be called? The default displayhook calls display_immediately. The
IPython notebook conversely calls displayhook from display_immediately
defined in the common base class, while the command line overrides it with
a different call to displayhook. (In which case the "common" version should
be moved to the notebook class.)
2) Calling "data field" differently in each output container is
inconvenient, since similar containers cannot be handled together, rather
one should copy-paste the same code again and again. I would much prefer
writing
{{{
elif isinstance(rich_output, (OutputImagePng, OutputImagePng, ...)):
msg = self.launch_viewer(
rich_output.data.filename(), plain_text.text.get())
return ({u'text/plain': msg}, {})
}}}
rather than
{{{
elif isinstance(rich_output, OutputImagePng):
msg = self.launch_viewer(
rich_output.png.filename(ext='png'), plain_text.text.get())
return ({u'text/plain': msg}, {})
elif isinstance(rich_output, OutputImageGif):
msg = self.launch_viewer(
rich_output.gif.filename(ext='gif'), plain_text.text.get())
return ({u'text/plain': msg}, {})
...
}}}
Note that the current/second variant requires replacing Png with Gif in 3
different places and different cases. (The first one would require
implementing default extension mechanism.)
3) html("string") should render "string" as a piece of HTML code rather
than just printing it if frontend supports it - I am not clear on how to
implement it in the current model, it seems to me that OutputHTML format
should be added and supported.
4) show(x^2) and view(x^2) should trigger display of OutputLatex, but it
does not seem to be the case - it seems to me that SageNB still relies on
old mess and IPython supports only global preferences for displaying
formulas.
5) Just to confirm - only SageNB depends now on EMBEDDED_MODE == True
blocks, correct?
Thank you!
Andrey
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