Re: Problem with NSDateFormatter

[Fred Kiefer]

Am 24.08.2010 00:16, schrieb Fred Kiefer:
> Am 23.08.2010 15:20, schrieb Philippe Roussel:
>> In SimpleAgenda I use an instance of NSDateFormatter created with
>>
>> dateFormatter = AUTORELEASE([[NSDateFormatter alloc]
>> initWithDateFormat:[[NSUserDefaults standardUserDefaults]
>> objectForKey:NSShortDateFormatString] allowNaturalLanguage:NO]);
>>
>> in the appointment editor for a textbox where you can enter the last
>> date of a recurring event. I *think* it used to work but with latest svn
>> I'm unable to change the date and the textbox has a really strange
>> behaviour.
>>
>> I'm using a French locale but the problem exists in English too.
>>
>> Is my code wrong or is this a bug in NSDateFormatter ?
>> Did someone recently tested that code ?
> 
> I was able to reproduce a problem here (probably with an older version
> of SimpleAgenda). Could you please write a detailed bug report. I am
> going to look into this in the next days and it would be great to have a
> place where we gather all relevant information.

My first impression when looking at a back trace from the code is that
[NSCell setObjectValue:] gets called too often. I would expect that we
only get that call, when the editor actually finished editing the text.
But I get it each time I delete a character from the string.
I still don't understand whether this is actually wrong and if so, where
it goes wrong. Perhaps it is just too late over here. :-(

Breakpoint 1, -[NSCell setObjectValue:] (self=0xe007a0,
_cmd=0x7ffff78108a0,
    object=0xcde270) at NSCell.m:331
331     {
(gdb) po object
29.09.2010
(gdb) bt
#0  -[NSCell setObjectValue:] (self=0xe007a0, _cmd=0x7ffff78108a0,
object=0xcde270)
    at NSCell.m:331
#1  0x00007ffff7384577 in -[NSActionCell setObjectValue:] (self=0xe007a0,
    _cmd=<value optimized out>, anObject=0xcde270) at NSActionCell.m:228
#2  0x00007ffff74d70cf in -[NSTextField validateEditing] (self=<value
optimized out>,
    _cmd=<value optimized out>) at NSTextField.m:485
#3  0x00007ffff738415f in -[NSActionCell objectValue] (self=0xe007a0,
    _cmd=<value optimized out>) at NSActionCell.m:153
#4  0x000000000040d0aa in -[AppointmentEditor controlTextDidChange:]
(self=0xd70210,
    _cmd=<value optimized out>, aNotification=<value optimized out>)
    at AppointmentEditor.m:169
#5  0x00007ffff6d5fb03 in -[NSNotificationCenter _postAndRelease:]
(self=0x6dc210,
    _cmd=<value optimized out>, notification=0x800020) at
NSNotificationCenter.m:1161
#6  0x00007ffff73f64bc in -[NSControl textDidChange:] (self=0xc95d30,
    _cmd=<value optimized out>, aNotification=0x875a10) at NSControl.m:577
#7  0x00007ffff74d796c in -[NSTextField textDidChange:] (self=0xc95d30,
    _cmd=<value optimized out>, aNotification=0x875a10) at NSTextField.m:522
#8  0x00007ffff6d5fb03 in -[NSNotificationCenter _postAndRelease:]
(self=0x6dc210,
    _cmd=<value optimized out>, notification=0x875a10) at
NSNotificationCenter.m:1161
#9  0x00007ffff754f0db in -[NSTextView didChangeText] (self=0x802e30,
    _cmd=<value optimized out>) at NSTextView.m:2659
#10 0x00007ffff7436c5a in -[NSInputManager handleKeyboardEvents:client:]
(self=0x92c530,
    _cmd=<value optimized out>, eventArray=<value optimized out>,
client=0x802e30)
    at NSInputManager.m:652
#11 0x00007ffff7555a13 in -[NSTextView(leftovers) keyDown:] (self=0x802e30,
    _cmd=<value optimized out>, theEvent=0xaf72f0) at NSTextView.m:5392
---Type <return> to continue, or q <return> to quit---
#12 0x00007ffff73a0578 in -[NSApplication run] (self=0x930e00,
_cmd=<value optimized out>)
    at NSApplication.m:1532
#13 0x00007ffff7380857 in NSApplicationMain (argc=<value optimized out>,
    argv=<value optimized out>) at Functions.m:89