ListView: add fns with_load_ahead, with_min_alloc_len#659
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Support (predictive) load-ahead and load cache for
ListViewview widgets, and use in the file explorer.Note that load-ahead and caching could instead be implemented in the async clerk. This would be "better" (in that only the minimum amount of data is cached, not whole widgets) but would require significant revisions to the file explorer and also would require using
Spriteover custom code rendering images and SVG to (GPU) buffers instead of using theImageandSvgwidgets.Since this approach only really requires a couple of lines in the (
file-explorer) app this approach will be preferable for many users.