Re: Word selection and cursor placement

[Andreas Höschler]

Dear Matt,

thanks for your hints.

> > while trying to use GNUstep (NSTextView) for real
> > coding - we are 
> > migrating from Macs to Solaris/GNUstep machines - I
> > encountered the 
> > following problems:
> >
> > • Double clicking on a word line _Timber_Stock
> > should select the whole 
> > word not only Timber or Stock. At least that's how
> > it's done on the Mac 
> > and how it makes sense IMHO. On the other hand
> > doubleclicking on 
> > <mytag>  should only select mytag and not <mytag>.
> > Any idea where this 
> > can be corrected?
>
> i believe -selectionRangeForProposedRange:granularity:

Here is my fix for this problem:

NSAttributedString
We fix selecting words by doubleclicking with teh mouse as follows:

static void cache_init_real(void)
{
...  
/* Initializes wordBreakCSet */
m = [NSMutableCharacterSet new];
cset = [NSCharacterSet whitespaceAndNewlineCharacterSet];
[m formUnionWithCharacterSet: cset];
cset = [NSCharacterSet punctuationCharacterSet];
[m formUnionWithCharacterSet: cset];
cset = [NSCharacterSet controlCharacterSet];
[m formUnionWithCharacterSet: cset];
cset = [NSCharacterSet illegalCharacterSet];
[m formUnionWithCharacterSet: cset];
//  [m removeCharactersInString: @"-"]; // <---
[m addCharactersInString: @"<>"];	// <---
[m removeCharactersInString: @"_"];	// <---
wordBreakCSet = [m copy];
RELEASE (m);
...
}

> > • Selecting 'valueForKey' in
> >
> > [self valueForKey:@"hostname"];
> >
> > and the pressing cursor left puts the cursor
> > directly to the right of 
> > self which is wrong. The cursor should be placed
> > between the space and 
> > valueForKey. The behaviour is even worse when
> > leaving a selction to the 
> > right side. When self was selected this places the
> > cursor between 's' 
> > and 'elf' which is totally wrong.
>
> NSTextView_actions.m: -moveLeft:
>
> > Hints where in the GNustep tree this can be
> > corrected are greatly 
> > appreciated! Thanks!

I belive the malfuntion actually is in NSLayoutManager

-(unsigned int) characterIndexMoving: (GSInsertionPointMovementDirection)direction
fromCharacterIndex: (unsigned int)from
originalCharacterIndex: (unsigned int)original
distance: (float)distance

but I unfortunately don't understand this method. Anybody worked on thi sand has a clue?

Regards,

Andreas