On 16 Oct 2009, at 20:51, I. Savant wrote:
On Oct 16, 2009, at 3:44 PM, I. Savant wrote:
I want to figure out a way to build a search predicate that will
allow me to search a Text View and I think this is likely to be
the only way.
Seems a bit odd. Could you elaborate?
Let *me* elaborate on *that*. :-) You normally use predicates to
filter objects in the model layer of your application. Note
"normally". If you're trying to provide a way to search within a
text view, this is a very strange way of going about it:
1 - NSTextView already takes advantage of the Find field.
2 - Searching for a substring inside a string with a predicate
searches the *whole* string as one ... this is only really useful if
your text view's content is made up of a bunch of smaller units, but
then again ... see 1 above.
3 - The predicate would be used to filter an array of
NSTextStorages, not one NSTextStorage, returning those which contain
your search string.
4 - Related to 3: if you're searching text storages because you
treat them as individual subunits in your model, it would likely
make more sense to apply this filter to the model layer.
I will elaborate...
I have a Core Data application that has a Text View in its main
window, and also has a Find field. I want to create a search field
predicate to allow the user to search the text in the Text View. I'm
interested in point 1 above, because I initially thought it made sense
for an NSTextView to just work with the Find field, but I couldn't
seem to get it working. That is what led me to wondering whether I
could get at the string content in the NSTextView and search that
instead. I'm happy to just use the inherent capabilities of
NSTextField but I can't figure out what they are!
The Text View is simply used as a place for the user to put any rich
text and or images. Is there a way either to search or to get all of
the plain text out from such a Text View? It's probably a simplistic
question and I rather suspect that ultimately the answer is no!
Ian.
--
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