Add a output_updated.OutputArea event #3560
Merged
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As outlined in #3557 this PR adds a
output_updated.OutputAreaevent, triggered byupdate_display_datamessages, to match the existingoutput_added.OutputAreaevent which is triggered whenexecute_resultanddisplay_datamessages are received. Like theoutput_addedevent this allows registering callbacks which are given the entire mime bundle and the OutputArea, matching the capability of JupyterLab MIME renderers which are also given the entire mime bundle whenupdate_display_datamessages are received.Let me know if there is some place to document this new event and/or add some kind of test for it (couldn't find either in a cursory search). As an aside, very happy about my first ever contribution to the notebook.