Re: Yosemite NSCollectionView appropriate for spreadsheet-like view?
Re: Yosemite NSCollectionView appropriate for spreadsheet-like view?
- Subject: Re: Yosemite NSCollectionView appropriate for spreadsheet-like view?
- From: Jens Alfke <email@hidden>
- Date: Tue, 03 May 2016 11:53:16 -0700
> On May 1, 2016, at 9:06 AM, email@hidden wrote:
>
> As I've been thinking about this problem it occurred to me that the new(ish) NSCollectionView might be a viable replacement in this case. Before I go down the rabbit hole, is it reasonable to use to create a spreadsheet-like view?
No, because it eagerly creates a view for every item in the collection. So if you have a spreadsheet with 100,000 cells, it’s going to create 100,000 NSViews when the window opens.
NSMatrix may work better because it uses only a single view, but IIRC it still preallocates an NSCell for every item. Also I think it’s been deprecated.
I suspect you’ll need a custom view that uses cells or some other lightweight-view design pattern to avoid consuming resources for items that aren’t currently visible. (Of course, someone else may have already implemented that custom view, either as open source or commercially.)
—Jens
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