create separate timer for redraw requests #8023
Merged
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The redraw handle was using the idle timeout to denounce redraw requests so far. I will openly admit that I didn't quite appreciate the importance of the idle timeout back when I wrote the diff gutter PR (as I was still new to the codebase). It didn't really matter back then because the diff gutter timing out is a very rare occurrence but with #7538 the redraw handle is now triggered quite commonly which essentially makes the idle-timeout setting useless.
This PR fixes that by simply adding a separate timer for the redraw handle. In the long term we may move away from using the idle-timeout for debouncing data model update (#8021) at which point it would be fine to switch back to the idle timeout. Until all of that (substantial) work is finished I think its a good idea to fix this in the meantime (especially looking toward the next release).