[FIX] Correlations: Add progress bar, retain responsiveness #4011
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Issue
Fixes #4008
Since adding the progress bar was somehow trivial, making the widget responsive was not and I'm still not sure about the solution.
The widget was getting unresponsive for datasets with small number of instances and many features. In those cases correlation between a pair of features was calculated 'too fast' which caused a signal, for setting partial results, being emitted too frequently. Consequently the widget was getting unresponsive.
Description of changes
To prevent the congestion, the signal is only emitted every 0.01 second.
Includes