Re: Dynamic modification of text search results
Re: Dynamic modification of text search results
- Subject: Re: Dynamic modification of text search results
- From: Marco Tabini <email@hidden>
- Date: Wed, 04 Jul 2012 09:22:16 -0400
> Does anyone have any good suggestions as to how to update my search results when the underlying source text changes? Do I have to listen for all changes from the underlying text objects and try to adapt, or is there a better pattern for doing this? Xcode does this nicely: no matter what changes you make in the editor, the search results seem to be updated on the fly.
Couple of random suggestions:
* If you're using NSAttributedString, you can mark your search results by assigning custom attributes to specific ranges of text; as the text changes, those attributes will stick around and you can later find them using the attribute retrieval methods (I believe that's what Xcode does).
* As an alternative, a more naïve approach could be to simply repeat the search every time you detect the text changing, but depending on the size of your text files, that could eat up a lot of CPU cycles, and is just inelegant.
I'm sure there are other possibilities, too, but these two are the first ones that come to mind.
HTH,
—Mt.
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