I have an NSTextView. Check spelling as you type is enabled. If I
misspell a word it is correctly underlined with a red line immediately
after I type the word followed by a whitespace. But then the underline
is removed when I begin typing a new word.
I'm guessing this is related to some things that I'm doing with the
text system. I'm doing lots of syntax highlighting and things like
that. Specifically I'm changing attributes in the underlying text
storage, and I'm manually updating the text views current selection.
But I'm not doing anything with temporary attributes, and I'm not
actually modifying the underlying text.
The trouble is I'm not sure what exactly I'm doing to cause the
problem. I know that spelling state is implemented with the
NSSpellingStateAttributeName temporary attribute in the layout manger.
So to debug things I've subclassed NSLayoutManager and overridden all
the mutator methods:
- (void)addTemporaryAttributes:(NSDictionary *)attrs forCharacterRange:
(NSRange)charRange
- (void)addTemporaryAttribute:(NSString *)attrName value:(id)value
forCharacterRange:(NSRange)charRange
- (void)setTemporaryAttributes:(NSDictionary *)attrs forCharacterRange:
(NSRange)charRange
- (void)removeTemporaryAttribute:(NSString *)attrName
forCharacterRange:(NSRange)charRange
But none of those methods seemed to be causing the problem. Then I
noticed the private method:
- (void)_clearTemporaryAttributesForCharacterRange:(struct
_NSRange)fp8 changeInLength:(int)fp16
And that's appears to be the one that's removing the
NSSpellingStateAttributeName, but I'm not sure why. Does anyone know
what causes the _clearTemporaryAttributesForCharacterRange method to
get called... and have theories on why it's being called in my app and
why the NSSpellingStateAttributeName that it is clearing isn't being
replaced?
Here's a stack.
#0 0x0030777f in -[TPLayoutManager
_clearTemporaryAttributesForCharacterRange:changeInLength:] at
TPLayoutManager.m:77
#1 0x913ec1d7 in -[NSLayoutManager
textStorage:edited:range:changeInLength:invalidatedRange:]
#2 0x913ec144 in -[NSTextStorage
_notifyEdited:range:changeInLength:invalidatedRange:]
#3 0x914a3212 in -[NSTextStorage processEditing]
#4 0x000e6620 in -[TPEntryAliasStorage processEditing] at
TPEntryAliasStorage.m:355
#5 0x913d2aef in -[NSTextStorage endEditing]
#6 0x914a0fad in -[NSTextView insertText:replacementRange:]
#7 0x914a04f3 in -[NSTextView insertText:]
#8 0x914a001a in -
[NSKeyBindingManager(NSKeyBindingManager_MultiClients)
flushTextForClient:]
#9 0x9149e56f in -[NSTSMInputContext interpretKeyEvents:]
#10 0x9149e03a in -[NSView interpretKeyEvents:]
#11 0x9149df4a in -[NSTextView keyDown:]
#12 0x0030a500 in -[TPEntryAliasesTextView keyDown:] at
TPEntryAliasesTextView.m:161
#13 0x9140e4c5 in -[NSWindow sendEvent:]
#14 0x913da431 in -[NSApplication sendEvent:]
#15 0x91337e27 in -[NSApplication run]
#16 0x91305030 in NSApplicationMain
#17 0x0000253d in main at main.m:17
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