Does NSTextView officially support line wrapping with the horizontal scroller
remaining visible?
I have a placard in my scroller and don't want to remove it along with the
scroller when I toggle between line wrapping and non wrapping.
If I don't hide the scroller I get the exception detailed below whenever the
NSTextView is resized and line wrapping is on.
My line wrap toggle code :
// an NSTextView category
- (void)setLineWrap:(BOOL)wrap
{
NSScrollView *textScrollView = [self enclosingScrollView];
NSSize contentSize = [textScrollView contentSize];
[self setMinSize:contentSize];
NSTextContainer *textContainer = [self textContainer];
if (wrap) {
/*
we have a placard embedded in the horizontal scroller and
ideally
we would like to keep the horizontal scroller visible
while wrapping is on.
however, an exception is generated if the horizontal scroller
remains visible
*/
[textScrollView setHasHorizontalScroller:YES]; // causes
exception
[self setHorizontallyResizable:YES];
[textContainer setWidthTracksTextView:YES]; // order
matters here : 1
[textContainer setContainerSize:NSMakeSize(contentSize.width,
FLT_MAX)]; // : 2
} else {
[textScrollView setHasHorizontalScroller:YES];
[self setHorizontallyResizable:YES];
[textContainer setContainerSize:NSMakeSize(FLT_MAX, FLT_MAX)];
[textContainer setWidthTracksTextView:NO];
}
}
CheeseAndBiscuits has encountered an exception. You are advised to exit the
application and restart.
NSInvalidArgumentException
The index 2147479551 is invalid
-[NSString rangeOfComposedCharacterSequenceAtIndex:] (in Foundation) + 99
_NSFastFillAllGlyphHolesForGlyphRange (in AppKit) + 465
-[NSLayoutManager characterRangeForGlyphRange:actualGlyphRange:] (in AppKit) +
97
-[NSTextView(NSPrivate) _setFrameSize:forceScroll:] (in AppKit) + 642
-[NSTextView setFrameSize:] (in AppKit) + 56
-[NSLayoutManager(NSPrivate) _resizeTextViewForTextContainer:] (in AppKit) + 970
-[NSLayoutManager(NSPrivate) _recalculateUsageForTextContainerAtIndex:] (in
AppKit) + 2204
-[NSLayoutManager(NSPrivate) _validatedStoredUsageForTextContainerAtIndex:] (in
AppKit) + 86
-[NSLayoutManager usedRectForTextContainer:] (in AppKit) + 108
-[NSTextView textContainerOrigin] (in AppKit) + 166
-[NSTextView hitTest:] (in AppKit) + 176
-[NSView hitTest:] (in AppKit) + 476
-[NSView _nextResponderForEvent:] (in AppKit) + 453
Regards
Jonathan Mitchell
Developer
Mugginsoft LLP
http://www.mugginsoft.com
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